HT Instruments PVCHECKs Electric Safety and Performance Of a Photovoltaic System User Manual

Contents hide

1 HT Instruments PVCHECKs Electric Safety and Performance Of a Photovoltaic System

2 Specifications

3 Product Information

4 General Description

5 Documents / Resources

5.1 References

HT Instruments PVCHECKs Electric Safety and Performance Of a Photovoltaic System

Specifications

Product Name: PVCHECKs
Release Version: EN 3.02 – 14/05/2025

Product Information

PVCHECKs is a versatile instrument designed for measuring efficiency, parameters, insulation, and continuity on PV plants and modules.

General Description

The PVCHECKs instrument offers various functions including defining new PV modules, modifying existing modules, and deleting modules.

Measuring Efficiency on PV Plants
To measure efficiency on PV plants using the remote unit SOLAR-02, follow the instructions provided in section 6.1 of the user manual.

Measuring Parameters without SOLAR-02
If you need to measure parameters on PV plants without using SOLAR-02, refer to section 6.2 for detailed instructions.

Quick Check on PV Modules and Strings (IVCK)
For a quick check on PV modules and strings using IVCK, follow the guidelines outlined in section 6.3 of the manual.

Measurement of Insulation
To measure insulation on PV modules, strings, or fields, refer to section 6.4 for step-by-step instructions.

Measurement of Continuity
For measuring continuity on PV modules, strings, or fields, follow the calibration steps for measuring cables and then proceed with continuity measurement as described in section 6.5.

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PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to electronic measuring instruments. Before and while carrying out measurements, observe the following indications and read all notes preceded by the symbol with the utmost attention.
· Do not carry out any voltage or current measurement in humid environments · Do not carry out any measurements in case gas, explosive materials or flammables are
present, or in dusty environments · Avoid contact with the circuit being measured if no measurements are being carried out · Avoid contact with exposed metal parts, with unused measuring probes, etc. · Do not carry out any measurement in case you find anomalies in the instrument such

as deformation, breaks, absence of display on the screen, etc. · Pay special attention when measuring voltages higher than 25V in special
environments and 50V in normal environments, since a risk of electrical shock exists.
In this manual, and on the instrument, the following symbols are used:
CAUTION: observe the instructions given in this manual; an improper use could damage the instrument or its components
High voltage danger: electrical shock hazard

Double insulation
DC voltage or current
Connection to earth
1.1. PRELIMINARY INSTRUCTIONS · This instrument has been designed for use in the environmental conditions specified in
§ 10.6. Do not use in different environmental conditions. · The instrument may be used for measuring VOLTAGE and CURRENT in CAT III 300V
with a maximum voltage of 1000VDC between inputs. Do not use on systems exceeding the limit values specified in § 10.1, § 10.2 and § 10.3

CAUTION
Do not use the instrument for IVCK tests on PV modules with efficiency >19%. Check the technical characteristics of the PV modules before carrying out the tests in order to avoid possible damage to the instrument
· We recommend following the normal safety rules devised to protect the user against dangerous currents and the instrument against incorrect use.
· Only the accessories provided together with the instrument will guarantee safety standards. They must be in good conditions and replaced with identical models, when necessary.
· Check that the batteries are correctly inserted. · Before connecting the measuring cables to the circuit being measured, check that the
desired function has been selected.

EN – 3

PVCHECKs

1.2. DURING USE Please carefully read the following recommendations and instructions:

CAUTION

· Failure to comply with the caution notes and/or instructions may damage

the instrument and/or its components or be a source of danger for the

operator.

· The symbol ”

” indicates a full charge level of the internal batteries.

When battery charge decreases to a minimum level, the symbol ”

”

appears on the display. In this case, stop testing and replace the batteries

according to the indications given in § 9.2

· The instrument is capable of keeping data stored even without

batteries.

1.3. AFTER USE When measurements are completed, turn off the instrument by pressing and holding the ON/OFF key for some seconds. If the instrument is not to be used for a long time, remove the batteries and follow the instructions given in § 3.3
1.4. DEFINITION OF MEASUREMENT (OVERVOLTAGE) CATEGORY Standard “IEC/EN61010-1: Safety requirements for electrical equipment for measurement, control and laboratory use, Part 1: General requirements” defines what measurement category, commonly called overvoltage category, is. § 6.7.4: Measured circuits, reads:
Circuits are divided into the following measurement categories:

· Measurement category IV is for measurements performed at the source of the lowvoltage installation Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units.
· Measurement category III is for measurements performed on installations inside buildings Examples are measurements on distribution boards, circuit breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent connection to fixed installation.
· Measurement category II is for measurements performed on circuits directly connected to the low-voltage installation
Examples are measurements on household appliances, portable tools and similar equipment.
· Measurement category I is for measurements performed on circuits not directly connected to MAINS
Examples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS-derived circuits. In the latter case, transient stresses are variable; for that reason, the standard requires that the transient withstand capability of the equipment is made known to the user.

EN – 4

PVCHECKs
2. GENERAL DESCRIPTION
2.1. INTRODUCTION This instrument has been designed to carry quick checks (IVCK) on photovoltaic modules/strings in order to verify the parameters declared by the manufacturer. In addition, this instrument measures insulation/continuity on PV modules/strings/fields and evaluates the efficiency of a PV field.
IVCK and insulation/continuity measurements may be performed in sequential order IVCK Insulation Continuity, or be carried out separately in manual mode.
2.2. INSTRUMENT FUNCTIONS The instrument has the following features: Continuity test of protective conductors (LOW) · Test with test current > 200mA in compliance with standard IEC/EN62446-1 · Manual calibration of measuring cables.
Measurement of insulation resistance on PV modules/strings (M) · Test voltages of 250V, 500V, 1000VDC in compliance with standard IEC/EN62446-1 · 3 measuring modes: Field, Timer, String · Insulation test of unearthed metal masses
Efficiency evaluation of a PV installation in the short/medium term (EFF) · Measurement of DC voltage, DC current and DC power at PV modules/strings’ outputs · Measurement of irradiation [W/m2] by means of a reference cell connected to the
optional remote unit SOLAR-02 · Measurement of module and environmental temperature by means of probe connected
to the optional remote unit SOLAR-02 · Application of compensation relationships to DC efficiency. · Immediate evaluation of DC efficiency according to the limits set by the user · Parameter recording of a PV system with 5s to 60min programmable IP
Quick checks (IVCK) in compliance with standard IEC/EN62446-1 · Measurement of open circuit voltage Voc on PV modules/strings up to 1000VDC · Measurement of short-circuit current Isc on PV modules/strings up to 15A · Measurement of irradiation by means of an optional reference cell · Immediate evaluation (OK/NO) of test results · Possible connection with the optional remote unit SOLAR-02 · Internal customizable database for managing up to 30 PV modules · Display of results in OPC and STC conditions
The instrument is provided with backlit display, internal contrast adjustment and a HELP key able to give a valid help to the operator while connecting the instrument to the installation. An Auto Power OFF function, which can also be deactivated, is available after approx. 5 minutes’ idleness.
EN – 5

PVCHECKs

3. PREPARATION FOR USE
3.1. INITIAL CHECKS Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged. However, we recommend checking it to detect any damage possibly suffered during transport. In case anomalies are found, immediately contact the Dealer.

We also recommend checking that the packaging contains all components indicated in §
10.7. In case of discrepancy, please contact the Dealer. In case the instrument should be returned, please follow the instructions given in § 12.

3.2. INSTRUMENT POWER SUPPLY The instrument is battery supplied. For battery type and life, see § 10.5.

The symbol ”

” indicates a full charge level of the internal batteries. When battery

charge decreases to a minimum level, the symbol ”

” appears on the display. In this

case, stop testing and replace the batteries according to the indications given in § 9.2.

The instrument is capable of keeping data stored even without batteries.

The instrument is provided with advanced algorithms to maximize the batteries’ life.

During instrument operation, a short pressing of the key turns on the display’s backlighting. In order to save battery efficiency, backlighting automatically turns off after approx. 30 seconds.

A frequent use of backlighting reduces the batteries’ life.

3.3. STORAGE In order to guarantee precise measurement, after a long storage time under extreme
environmental conditions, wait for the instrument to come back to normal condition (see §
10.6).

EN – 6

4. NOMENCLATURE
4.1. INSTRUMENT DESCRIPTION

PVCHECKs
CAPTION: 1. Inputs 2. Display 3. Connector for optical output/USB
port 4. Arrow keys/ENTER key 5. GO/STOP key 6. SAVE key 7. ON/OFF key 8. HELP / key 9. ESC/MENU key

Fig. 1: Description of the front part of the instrument
CAPTION: 1. Input for irradiation measuring probe 2. Input for auxiliary temperature
measuring probe / DC current clamp (IVCK, EFF) 3. P, N inputs for DC voltage (IVCK, EFF) / Insulation (M) measurement 4. E, C inputs for continuity tests (LOW)
Fig. 2: Description of the upper part of the instrument CAPTION: 1. Connector for opto-insulated/USB output cable connection
Fig. 3: Description of the instrument’s side
EN – 7

PVCHECKs
4.2. KEYBOARD DESCRIPTION The keyboard includes the following keys:
ON/OFF key to switch on/off the instrument
ESC/MENU key to exit the selected menu without confirming and to go back to the main menu keys to move the cursor inside the various screens in order to select programming parameters ENTER key to confirm modifications, selected programming parameters and to select the function to be accessed from the menu.
GO/STOP key to start measurements

SAVE key to save the measured values

HELP key (long pressing) to access the on-line help, to view the possible connections between the instrument and the installation.
key (simple pressing) to activate the display’s backlighting

4.3. DISPLAY DESCRIPTION

The display is a graphic module with a resolution of 128 x 128 15/05/12 15:34:26

dots. The display’s first line indicates the system’s date/time

and contains the battery charge indicator.

At the bottom of the display, the function of the ENTER key

and the active mode are displayed.

The symbol

indicates the presence of an active radio

connection with the remote unit SOLAR-02.

The flashing symbol

indicates that the instrument is

currently searching for a radio connection with the remote unit

SOLAR-02.

Selection

4.4. INITIAL SCREEN When switching on the instrument, the initial screen appears for a few seconds. It shows:
· The instrument model (PVCHECKs)
· The manufacturer’s name · The presence of the enabled internal module for RF
connection
· The serial number (SN:) of the instrument
· The firmware version (FW:) in the instrument’s memory
· The date of the last instrument calibration (Calibration date:)

PVCHECKs
HT
RF SN: 15345678
FW: 1.10 Calibration date:
09/04/2025

After a few seconds, the instrument switches to the last function selected.

EN – 8

PVCHECKs

5. GENERAL MENU

Pressing the ESC/MENU key in any condition of the 15/05/12 15:34:26

instrument displays the general menu screen, in which the I V C K T e s t m o d . / s t r i n g s

instrument may be set, the saved measures can be displayed

and the desired measuring function may be selected.

LOW PE Continuity test

Use the cursor to select one of the options and confirm with M I n s u l a t i o n t e s t

ENTER to access the desired function.

EFF Efficiency test

SET Settings

Archive modules

MEM Recall Memory

Trasf. data to PC

Press ENTER to sel.

5.1. SET INSTRUMENT SETTINGS

Position the cursor onto SET by using the arrow keys (,) 15/05/12 15:34:26

and confirm with ENTER. The display shows the screen G e n e r a l

which lists the different settings of the instrument.

Measuring unit

Settings will be maintained also after switching off the D a t e a n d T i m e

instrument.

Remote Unit – Pyranometer

Irradiance

DC Clamp

Press ENTER to sel. SET

5.1.1. General

1. Position the cursor onto General by using the arrow keys 15/05/12 15:34:26 (,) and confirm with ENTER.

2. The display shows the screen which allows: Setting the instrument language Enabling/disabling the auto power off function Adjusting display contrast

Language :English

Auto Power Off : NO

Contrast:

: 40

Key Beep

:NO

Enabling the acoustic signal when pressing a key.

3. Use the arrow keys (,) for option setting, and select the desired option by means of the arrow keys ( , ).
4. Press the SAVE key to save the settings made; the

SAVE to store SET

message “Data saved” will be displayed for a few

seconds. Press the ESC/MENU key to exit without saving

and go back to the previous screen.

EN – 9

PVCHECKs

5.1.2. Measuring unit This section allows setting the measuring units of some parameters included in the
database (DB) for the management of PV modules (see § 5.6) when measuring IVCK.

1. Position the cursor onto “Measuring Unit” by using the 15/05/12 15:34:26

arrow keys (,) and confirm with ENTER. The display shows the screen which allows

setting

the

Alpha

:mA/°C

measuring units of the following parameters:

Beta

: %/°C

· Alpha possible selection: “%/°C” and “mA/°C” · Beta possible selection: “%/°C” and “mV/°C” · Gamma expressed in “%/°C”

Gamma Tolerance

: %/°C : %

· Voc and Isc tolerance expressed in “%” 3. Set the desired measuring units by means of the arrow
keys ( , ).

SAVE to store SET

4. Press the SAVE key to save the settings made; the

message “Data saved” will be displayed for a few seconds.

5. Press the ESC/MENU key to exit without saving and go

back to the previous screen.

5.1.3. Date and time

1. Position the cursor onto “Date and Time” by using the 15/05/12 15:34:26

arrow keys (,) and confirm with ENTER. The display shows the screen which allows

setting

the

Year Month

:2012 : 05

system’s date/time USA (US) format.

both

in the

European

(EU)

or in

the

Day Hours Minutes

: 15 : 09 : 53

3. Set the desired measuring units by means of the arrow F o r m a t

: EU

keys ( , ).

4. Press the SAVE key to save the settings made; the message “Data saved” will be displayed for a few
seconds. Press the ESC/MENU key to exit without saving

SAVE to store SET

and go back to the previous screen.

EN – 10

PVCHECKs

5.1.4. Remote unit/Pyranometer This section allows selecting the type of remote unit to be used (if available) and setting
the values of typical parameters (Sensitivity and Alpha) of the reference irradiance cell
(HT304k optional accessory). The values of these parameters, which are printed on the back label of the cell, depend on the type of PV module being tested.

1. Position the cursor onto Remote Unit-Pyranometer by 15/05/12 15:34:26

using the arrow keys (,) and confirm with ENTER. The display shows the screen which allows selecting the

Remote

Unit

EFF:

YES

use of the remote unit for EFF or IVCK tests. Possible R e m o t e U n i t I V C K : N O

options are:

Sens.

YES (use of SOLAR-02)

Alpha

NO (no use of SOLAR-02) In case the remote unit

:31.0mV/kW/m2 : 0.060 %/°C

SOLAR-02 is not used for IVCK tests, it is necessary to

set the values of Sensitivity (Sens.) and Alpha

parameter of the irradiance cell on the instrument. 3. Set the desired values by means of the keys ( , ) 4. Press the SAVE key to save the settings made; the

SAVE to store SET

message “Data saved” will be displayed for a few seconds.

Press the ESC/MENU key to exit without saving and go

back to the previous screen

EN – 11

PVCHECKs

5.1.5. Irradiance This section allows setting the minimum irradiance threshold both for IVCK measurement
and for efficiency test on a PV installation.

1. Position the cursor onto “Irradiance” by using the arrow 15/05/12 15:34:26

keys (,) and confirm with ENTER. The display shows the screen containing

“Min

Irr

IVCK”,

Min Min

IrrIVCK Irr EFF

:000W/m2 :600W/m2

which allows setting the minimum irradiance threshold

expressed in W/m2, used by the instrument as a reference

during IVCK measurement, and “Min Irr EFF”, which

allows setting the minimum irradiance threshold expressed

in W/m2, used by the instrument as a reference while measuring the efficiency of a PV installation. Use the arrow keys (,) to switch between the two items.

SAVE to store SET

3. To set the minimum irradiance threshold, use the arrow

keys ( , ). To obtain results with the accuracy

guaranteed in this manual, we recommend following the

instructions given in § 10. The value can be set within the

following range: 0 800 W/m2

4. Press the SAVE key to save the settings made; the

message “Data saved” will be displayed for a few seconds.

Press the ESC/MENU key to exit without saving and go

back to the previous screen.

CAUTION
The “0 W/m2” setting for parameter “Irr min IVCK” allows carrying out IVCK measurements without the following conditions being checked: Connection of reference cell to IRR input of the instrument Unsteady irradiation values Number of modules consistent with the measured open circuit voltage

5.1.6. DC Clamp This option allows setting a possible correction factor K for the DC clamp, in order to improve current measurement. If present, the correction factor is indicated on the rear label of the clamp
itself, indicated as:

K= X.xxx

In case no label is present, set k = 1.000

1. Position the cursor onto “DC Clamp” by using the arrow 15/05/12 15:34:26

keys (,) and confirm with ENTER. The display shows the item “DC clamp

K”,

which

allows

clamp

:1.000

setting the corrective factor in the following range 0.950 to

1.050. Set the desired values by means of the arrow keys ( , ).

3. Press the SAVE key to save the settings made; the

message “Data saved” will be displayed for a few seconds.
Press the ESC/MENU key to exit without saving and go back to the previous screen.

SAVE to store SET

EN – 12

PVCHECKs

5.2. EFF EFFICIENCY TEST SETTINGS FOR PV INSTALLATIONS The purpose of this measurement is to evaluate the DC efficiency of a photovoltaic
installation, with the possibility of obtaining a positive or negative result of the
check/recording depending on a limit on the nDC parameter, freely set by the user. For this test, the use of the optional remote unit SOLAR-02 is necessary (see § 6.1)

5.2.1. Instrument settings

1. Position the cursor onto EFF by using the arrow keys 15/05/12 15:34:26

(,) values

and confirm with of the output

ENTER. The display shows the electrical parameters of the

Irr Pnom

– – 3.500

photovoltaic generator.

– – –

Pdc

0.0

Vdc

0.000

Idc

0.0

ndc

– – –

W/m2
kW
°C °C kW V A

GO to Start

Selection

EFF

2. Press the ENTER key. The instrument shows the 15/05/12 15:34:26

following options: System parameters and Instrument I r r

settings.

Pnom

Use the settings”

arrow keys and confirm

(,) to select “Instrument with ENTER. The instrument

Tc Te Pdc

shows the following screen:

Vdc Idc

ndc

– – 3.500
– – – – –
0.0 0.000
0.0 – – –

W/m2
kW
°C °C kW V A

System parameters

Instrument settings

Selection

EFF

4. By using the arrow keys ( , ) it is possible to set:

15/05/12 15:34:26

the integration period (IP) instrument when testing

which can be used the parameters of

by a

the PV

IP FS

clamp

: 5s : 1000 A

system. The following values can be selected: 5s, 10s,

30s, 60s, 120s, 300s, 600s, 900s, 1800s, 3600s. The FS of the DC clamp used for measuring DC

current with value selectable between 1A 3000A

5. Press the SAVE key to save the settings made; the message “Data saved” will be displayed for a few
seconds. Press the ESC/MENU key to exit without saving and go back to the previous screen.

SAVE to store EFF

EN – 13

PVCHECKs

5.2.2. System parameters

1. Position the cursor onto EFF by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the I r r values of the output electrical parameters of the P n o m

– – 3.500

photovoltaic generator.

– – –

Pdc

0.0

Vdc

0.000

Idc

0.0

ndc

– – –

W/m2
kW
°C °C kW V A

GO to Start

Selection

EFF

2. Press the ENTER key. The instrument shows the 15/05/12 15:34:26

following options: System parameters and Instrument I r r

settings

Pnom

Use the arrow Parameters” and

keys (,) to select “System confirm with ENTER. The instrument

Tc Te Pdc

shows the following screen:

Vdc Idc

ndc

– – 3.500
– – – – –
0.0 0.000
0.0 – – –

W/m2
kW
°C °C kW V A

System parameters

Instrument settings

Selection

EFF

4. By using the arrow keys ( , ) it is possible to set:

15/05/12 15:34:26

Pmax maximum total rated power of PV installation expressed in kW
Range coefficient of power variation with

Pmax: Gamma

temperature,

characteristic

parameter

modules

NOCT Te

:3.500kW

-0.45 %/°C

: 45 °C

: 40 °C

(range: -1.00 -0.01%/C)

: 45 °C

NOCT

rated

operating

temperature

the

cell,

nDC Lim: Corr.Type.

characteristic parameter of PV modules (typically in

: 0.85 : T. Env.

the following range: 42 48°C) Te, Tc setting of default values of environmental
and (Te) and PV module (Tc) temperatures. These
values are taken into consideration by the instrument

SAVE to Store EFF

only when no auxiliary probe is connected to the

remote unit SOLAR-02 (range: Te = 0°C 80°C; Tc =

0°C 100°C) nDC Lim minimum limit of DC efficiency (default

value: 0.85 , range: 0.01 1.15) Corr. Type Setting of the compensation

relationship on the calculation of Pdc power and the

maximization of DC efficiency (see § 5.2.3).

EN – 14

PVCHECKs

5.2.3. Selection of the compensation relationship of temperature effects

This option allows selecting the relationship to be used to correct the measurements

performed according to the modules’ temperature as regards the calculation of nDC

efficiency. The following modes are available:

– T.Mod.: Correction factor Rfv2 related to PV module Temp. (Italian guideline CEI-82-25)

– T.Env: Correction factor Rfv2 related to environmental Temp. (Italian guideline CEI-82-25)

– nDC:

nDC correction according to module temperature

CAUTION

If it’s performed a test according to Italian guideline it is recommended to select “T.Env.” correction

Corr. Type
T.Mod.

Temperature used (Tcel)
Tcel = Tm oduli_Mis

T.Env.

Tc e l =

Ta m b+

(NOCT

–

20)

Irr 800

nDC

Tcel = Tm oduli_Mis

Calculation of nDC

Ref.

Rfv2

–

(Tcel-

40)

100

(se Tcel 40C) (se Tcel 40C)

hence

CEI 82-

nDC =

Pdc

Rfv2

Gp GSTC

( ) nDC

GSTC Gp

1 +

100

Tcel

– 25

Pdc Pn

– – –

where:

Symbol
G p
GS T C
P n Pdc
Rfv 2
NOCT

Description
Irradiance measured on PV module surface
Standard Irradiance = 1000
Rated Power = sum of all Pmax values of the section of the PV plant being measured
DC power measured at the PV generator’s output Correction factor depending on the Temperature of PV Cells (Tcel) measured or calculated according to the type of selected correction relationship Absolute value of the thermal coefficient of Pmax of the PV modules included in the plant section being measured. (Normal Operating Cell Temperature) = Temperature the cells under reference conditions are brought to (800W/m2, 20°C, AM=1.5, air speed =1m/s).

Measurin g unit
W/m2 W/m2
kW kW
%/C %/C

For further details see § 11.1

EN – 15

PVCHECKs

5.3. LOW SETTINGS FOR CONTINUITY TEST WITH 200MA The purpose of this measurement is to test the continuity of protective conductors and equipotential ones (e.g. from rod to earth and connected foreign earth) and earth rods of SPDs on PV installations. The test must be carried out using a test current > 200mA according to the prescriptions of IEC/EN62446-1 guideline

5.3.1. Instrument settings

1. Position the cursor onto LOW by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the R P E m a x :

following screen:

Rcal

: —

Rpe

= —

Itest

= – – – mA

Selection

LOW

2. Press the ENTER key. The instrument shows the 15/05/12 15:34:26

following options: Settings and Leads calibration Use the arrow keys (,) to select “Settings”

and

RPE max Rcal

: :

1 —

confirm with ENTER. The instrument shows the following screen:

Rpe

= —

Itest

= – – – mA

Leads calibration Settings Selection

LOW

4. Using the arrow keys ( , ) it is possible to set the 15/05/12 15:34:26

maximum limit value of Rpe resistance which instrument uses as a reference while measuring.

the R P E m a x

:01

5. Press the SAVE key to save the settings made; the message “Data saved” will be displayed for a few
seconds. Press the ESC/MENU key to exit without saving and go back to the previous screen.

SAVE to store

Selection

LOW

CAUTION
The settings saved for max RPE also affect the settings for the Continuity test contained in the IVCK measurement (MENU IVCK)

EN – 16

PVCHECKs

5.4. M SETTINGS FOR INSULATION MEASUREMENT

5.4.1. Instrument settings

1. Position the cursor onto M by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the I n s . T e s t : 1 0 0 0 V

following screen:

Ri min

: 1.0

Mode

: Field

Vtest – – – V – – – V

Ri(+)

– – –

Ri(-)

– – –

Selection

2. Press the ENTER key. The instrument shows the option: 15/05/12 15:34:26

Settings: Confirm with ENTER. The instrument shows the following

Ins. Test Ri min

: 1000 : 1.0

V M

screen:

Mode

: Field

Vtest – – – V – – – V

Ri(+)

– – –

Ri(-)

– – –

Rp Settings Selection

– – –

4. Use the arrow keys (,) for option setting, and select 15/05/12 15:34:26

the desired option by means of the arrow keys ( , ). The following parameters can be set:

Ins. Test

: 1000V

Ri min

: 1.00 M

Ins. Test test voltage: 250, 500, 1000VDC Mode operating modes: Field, Timer, String

Mode

: TIMER

Ri min minimum limit value for insulation resistance T e s t t i m e : 1 0 s

Test time maximum value of test time (only for

TIMER mode) with a maximum value of 300s in steps

SAVE to store

of 1s.

5. Press the SAVE key to save the settings made; the

message “Data saved” will be displayed for a few

seconds. Press the ESC/MENU key to exit without saving

and go back to the previous screen.

CAUTION
The settings saved for test voltage also affect the settings for the insulation measurement contained in the IVCK measurement (MENU IVCK)

EN – 17

PVCHECKs

5.5. IVCK SETTINGS FOR IVCK QUICK TEST The purpose of this measurement is to verify the functionality of the connections and of the strings in a photovoltaic field, according to the provisions of standard IEC/EN62446-1 by measuring the open circuit voltage and the short-circuit current at operating conditions and referred to STC (via the optional measurement of irradiation) and providing immediate results regarding the measurement just carried out, both in absolute terms and by comparison with the strings previously tested. The test also allows carrying out (if selected) the continuity test and an insulation measurement in a sequence.

5.5.1. Instrument settings

1. Position the cursor onto IVCK by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the following screen:

Module
Vdc Irr

: SUNPWR318

: 0.0

: 0

W/m2

: Auto °C

Voc,Isc:

Ri(1000V) = – – – M

Rpe (Cal) = – – –

Selection

IVCK

2. Press the ENTER key. The instrument shows the 15/05/12 15:34:26

following options: Settings, Reset Averages 6.3.4) and Leads calibration (see § 6.5.2).

(see

Module
Vdc Irr

3. Use the arrow keys (,) to select “Settings” and T c

: SUNPWR318

: 0.0

: 0

W/m2

: Auto

°C

confirm with ENTER. The instrument shows the following V o c , I s c :

screen:

Ri(1000V) = – – – M

Rpe (Cal) =
Leads calibration Reset Averages Settings Selection

—
IVCK

4. Use the arrow keys (,) for option setting, and select 15/05/12 15:34:26

the desired option by means of the arrow keys ( , ). The following parameters can be set:

Module: Mod.Nx Str Temp

SUNPWR210
: 01 : Manual

Module type of module being tested Mod. N x Str. number of modules

the

string.

Tol. Tol.

Voc Isc

°C

: 05%(+4%)

Allowable values 1 50

Ins. Test : 1000

Temp

temperature

measuring

method.

Possible

Ri min RPE Test

: 1.0 : 2

options:

“Auto” automatic measurement (recommended) carried out according to the measured value of the
modules’ Voc.

SAVE to store IVCK

EN – 18

PVCHECKs
“Manual” setting, made by the operator, of the known temperature value of the module in the line below. Aux temperature measurement with auxiliary probe PT1000. Tol. Voc (%) percentage value of the desired limit tolerance (set by the operator according to his/her own requirements) for the measurement of Voc carried out by the instrument. Allowable values: 0% 25%. The value between brackets (4%) indicates the reading error of the instrument in Voc measurement. Tol. Isc (%) percentage value of the desired limit tolerance (set by the operator according to his/her own requirements) for the measurement of Isc carried out by the instrument. Allowable values: 0% 25%. The value between brackets (4%) indicates the reading error of the instrument in Isc measurement. Ins Test enabling/disabling of insulation measurement and setting of test voltage. Possible options: OFF, 250V, 500V, 1000V. With enabled function, the line “Ri min” appears, which allows setting the minimum limit threshold in the range 0.1 100M RPE Test enabling/disabling of continuity test and setting of the limit threshold value for measurement. Possible options OFF, 1 5 in steps of 1 5. Press the SAVE key to save the settings made; the message “Data saved” will be displayed for a few seconds. Press the ESC/MENU key to exit without saving and go back to the previous screen.
CAUTION
The settings saved for test voltage for the insulation measurement carried out within the IVCK function also affect the settings for the single measurement (MENU M).
EN – 19

PVCHECKs

5.6. DB DATABASE MODULE MANAGEMENT The meter allows managing up to a maximum of 30 different types of PV modules, further to a DEFAULT module (not editable and not erasable) which can be used as
reference case when no piece of information about the type of module being tested is
available.

The parameters, referred to 1 module, which can be set are described below in Table 1 together with their measuring range, resolution and validity condition.

Symbol Nms Pmax
Voc Vmpp
Isc Impp Toll –
Toll +
Alpha
Beta Gamma NOCT
Tech. Rs

Description Number of modules per string

Range 1 50

Resol. 1

Maximum rated power of module

50 4800W

Open-circuit voltage Voltage on maximum power point
Short-circuit current

15.00 99.99V 100.0 320.0V 15.00 99.99V 100.0 320.0V
0.5 15.00A

0.01V 0.1V 0.01V 0.1V
0.01A

Current on maximum power point

0.5 15.00A

0.01A

Negative tolerance for Pmax provided by the module manufacturer

0% 25.0% 0 99W

0.1% 1

Positive tolerance for Pmax provided by the module manufacturer

0 25% 0 99W

0.1% 1

Isc temperature coefficient

-0.1000.100%/°C 0.001%/°C -15.00 15.00mA/°C 0.01mA/°C

Voc temperature coefficient

-0.99 -0.01%/°C 0.01%/°C –0.999 -0.001V/°C 0.001V/°C

Pmax temperature coefficient

-0.99 -0.01%/°C 0.01%/°C

Rated working temperature of cell

0 100°C

1°C

Effects due to module technology

STD (standard) CAP(capacitive eff.)

Internal serial resistance

0.00 10.00

0.01

Table 1: Typical parameters of PV modules

Conditions Pmax – Vmpp I mpp 0.01
Pm a x Voc Vmpp Voc Vmpp Isc Impp Isc Impp 100*Tol-/Pnom< 25
100*Tol+/Pnom< 25
100*Alfa / Isc 0.1
100*Beta/Voc 0.999

CAUTION
The “Tech” item is referred to the choose of the technology of the module on test. Select the “STD” option for test on “STANDARD” PV modules, “CAP” option for test on higher capacitive effects PV modules
A wrong choice of the type of technology can lead to a negative outcome of the final test.

EN – 20

PVCHECKs

5.6.1. How to define a new PV module

1. Position the cursor onto DB by using the arrow keys 15/05/12 15:34:26

(,) and confirm with screen which contains:

ENTER.

The

display

shows

the

Model

Pmax

:DEFAULT

185

· ·

The type of PV module The values of the parameters associated to the module

Voc Vmpp Isc

= = =

44.5 37.5 5.40

V V A

(see Table 1) Use the arrow keys

(

)

select

the

“DEFAULT”

Impp Toll-

= =

4.95 0

A %

module type and confirm with ENTER.

Selection

3. Press the ENTER key, select the “New” command (which 15/05/12 15:34:26

allows defining a new module) and ENTER. Use the arrow keys (,)

confirm again with to scroll the list of

Model

Pmax

:DEFAULT

185

parameters.

Voc

44.5

Vmpp =

37.5

Isc

5.40

Impp =

4.95

Toll- =

New

Selection

4. By using the internal virtual keyboard it is possible to 15/05/12 15:34:26

define the name of the module (e.g. SUNPOWER 210) by means of the arrow keys (,, , ). Press ENTER to

Model

Pmax

: =

185

digit any character of the desired name.

Voc

44.5

Press the SAVE key to save the name of the new module thus defined or the ESC/MENU key to exit without saving.

KEYBOARD SUNPOWER 210
A B CD E F GH I J K L MNOP

Q R S T U V WX Y Z – + 0 1 2 3

4 5 6 7 8 9 SPACE

DEL

SAVE / ESC

6. Insert the value of each parameter (see Table 1) 15/05/12 15:34:26

according to the possible datasheet of the Manufacturer.). Position the cursor onto the parameter to be defined by using the arrow keys (,) and set the value using the

Model

Pmax Voc

: SUNPWR 210

= 0 W

0.0

arrow keys ( , ). Keep the arrow keys ( , ) pressed

Vmpp Isc

= =

0.0 0.00

V A

to carry out a quick setting of the values.

Impp =

0.00

7. Press

the

SAVE

key

save

the

settings

the

Toll-

ESC/MENU key to exit without saving.

CAUTION
· If the value of any parameter is unknown, press and hold the HELP key for a few seconds to set the default values.
· Upon pressing the SAVE key, the instrument checks the conditions indicated in Table 1
· and, if one or more of these conditions are not fulfilled, one of the error messages listed in § 6.6 is shown on the display. The instrument does not save the configuration set before any error is solved.
EN – 21

PVCHECKs

5.6.2. How to modify an existing PV module

1. Select the PV module to be modified from the internal 15/05/12 15:34:26

database by means of the arrow keys ( , ). Press the ENTER key and select the “Modify” command using the arrow key ().

Model

Pmax Voc

SUNPWR210

210

= 47.70

3. Confirm selection with ENTER.

Vmpp = 40.00

Isc

5.75

New

Modify

Delete

Delete all

Selection

4. By using the internal virtual keyboard it is possible to 15/05/12 15:34:26

define again the name of unchanged by means of the

the module or leave it arrow keys (,, , ).

Model:

Pmax

SUNPWR210

185

Press ENTER to digit any character of the desired name. V o c = 4 4 . 5 V

Press the SAVE key to save the name of the new module thus defined or to access the new parameter setting.

KEYBOARD SUNPOWER 210
A B CD E F GH I J K L MNOP

Q R S T U V WX Y Z – + 0 1 2 3

4 5 6 7 8 9 SPACE

DEL

SAVE / ESC

6. Change the value of the desired parameters by using the 15/05/12 15:34:26

arrow keys (,) and set the value using the arrow keys ( , ). Keep the arrow keys ( , ) pressed to carry out

Model

Pmax

a quick setting of the values. If the value of any parameter V o c

unknown,

press

and

hold

the

HELP

key

for

few

Vmpp Isc

seconds to set the default values.

Impp

Press

the

SAVE

key

save

the

settings

made

the

Toll-

: SUNPWR 210

= 210 W

47.70

40.00

5.75

5.25

ESC/MENU key to exit without saving. In this case, the

instrument shows the message “Data not saved”.

5.6.3. How to delete an existing PV module

1. Select the PV module from the internal database by 15/05/12 15:34:26

means of the arrow keys ( , ). Press the ENTER key and select the “Delete” command by means of the arrow key () to delete the selected

Model

Pmax Voc

:SUNPWR210

210

= 47.70

module.

Vmpp = 40.00

Isc

5.75

3. Press the ENTER key and select the “Delete all” N e w

command by means of the arrow key () to delete all M o d i f y

modules in the database.

Delete

4. Confirm the selection with ENTER or press ESC/MENU to D e l e t e a l l

exit.

Selection

CAUTION
It is not possible to modify nor delete the “DEFAULT” PV module which is a factory setting.

EN – 22

PVCHECKs
6. OPERATING INSTRUCTIONS
6.1. MEASURING EFFICIENCY PV PLANTS BY USING REMOTE UNIT SOLAR-02 For the sake of simplicity, further in this section, the word “string” will be used, although often the term “photovoltaic field” would be more correct. From the point of view of the instrument, the management of a single string or of more parallel strings (PV field) is identical. The instrument PVCHECKs (Master) allows measuring the efficiency of PV installations in combination with the optional remote unit SOLAR-02, which the irradiance and temperature probes are connected to. This remote unit is capable of communicating with the Master unit (to manage data synchronization and download) via a radiofrequency (RF) connection, which is active up to a maximum distance of 1m between the units.
CAUTION
· The maximum voltage between inputs P and N is 1000VDC. Do not measure voltages exceeding the limits given in this manual. Exceeding these limits could result in electrical shocks to the user and damage to the instrument.
· In order to guarantee the operator’s safety, while making the connections, disable the system being measured by means of the switches/breakers upstream and downstream of the DC/AC converter (inverter).
Fig. 4: Connection of instrument for efficiency measurement on a PV installation 1. Check and, if necessary, set the sensitivity of the reference cell on SOLAR-02
consistently with the type of PV modules which will be measured (please refer to the user manual of SOLAR-02). 2. We recommend making a preliminary evaluation of the value of irradiation on the surface of the PV modules being tested by means of unit SOLAR-02 (operating independently) and the reference cell. 3. Switch on PVCHECKs, check and, if necessary, change the instrument settings relevant to the type of remote unit, to the minimum irradiation threshold, to the full scale of the DC clamp, to the integration period and to the parameters of the system being measured (see § 5.1.4, § 5.1.5, § 0, § 5.2.1 and § 5.2.2).
EN – 23

PVCHECKs

4. In order to guarantee the operator’s safety, disable the system being measured by means of the switches/breakers upstream and downstream of the DC/AC converter (inverter).

5. Bring PVCHECKs and SOLAR-02 nearer (maximum distance of 1m between them). All instruments must be switched on (see the User Manual of SOLAR-2 for further details).

6. On PVCHECKS, press the MENU key, select the function EFF and press ENTER; wait for the two units to start communicating with each other. This condition is highlighted by
the contemporary presence of the following indicators:

Symbol Symbol

steady (not flashing) on the display of PVCHECKs steady (not flashing) on the display of SOLAR-02

7. Connect the inputs P and N respectively to the positive and negative output of the string, respecting the colours indicated in Fig. 4

8. Connect the output connector of the DC clamp to the IDC input.

CAUTION
BEFORE CONNECTING THE DC CLAMP TO THE CONDUCTORS Switch on the clamp, check the LED indicating the status of the clamp’s internal batteries (if present), select the correct range, press the ZERO key on the DC clamp and check on the display of PVCHECKs the actual zeroing of the corresponding Idc value (values up to 0.02A are acceptable).
9. Connect the DC current clamp to the positive output conductor of the string, respecting the direction of the arrow found on the clamp itself as indicated in Fig. 4
10. Position the clamp so that the jaw is not near the negative conductor.

11. The display shows the first screen which contains the 15/05/12 15:34:26

values of the output electrical parameters of the I r r

module/string.

Pnom

– – 3.500

12. Before symbol

starting measuring, check for the presence of ” ” steady on the display, which indicated a

Tc Ta Pdc

correct RF connection with the remote unit SOLAR-02.

Vdc Idc

ndc

45 30 3.125 389 8.01 – – –

W/m2 kW °C °C kW V A

Go to Start

Selection

EFF

13. Keeping the remote unit SOLAR-02 always close to the 15/05/12 15:34:26

main unit, press start testing. The

the GO/STOP key on PVCHECKS to message “Waiting start recording…”

Irr Pnom

– – 3.500

appears on the display of the main unit and “HOLD” is shown on the display of SOLAR-02, together with an

Tc Ta Pdc

indication of the time until “00” is reached.

remaining,

expressed

seconds,

Vdc Idc ndc

45 30 3.125 389 8.01 – – –

W/m2 kW °C °C kW V A

Waiting start recording…

Selection

EFF

EN – 24

PVCHECKs

14. Upon reaching “00” after pressing the GO/STOP key, the 15/05/12 15:35:00

test is started and the two units are synchronized with I r r

– – –

each other. In these conditions the message “Recording P n o m 3 . 5 0 0

running…” is displayed on the main “Recording…” is displayed by SOLAR-02.

unit

and

Tc Te

Pdc

45 30 3.125

Vdc

389

Idc

8.01

ndc

– – –

W/m2 kW °C °C kW V A

Recording running…

Selection

EFF

15. At any time it will be possible to analyze the current 15/05/12 15:35:00

recording status by pressing the MENU key. The following information will be shown:

Start 15/05/12 15:30:00

Period:

Starting date and time of recording The value set for the integration period (IP)

IP Number Rec. Time

61 0d 1h

The number of periods elapsed from the beginning of the

recording The remaining memory capacity for recording

Recording running…

Press the ESC key to exit the screen 16. Now it is possible to bring the unit SOLAR-02 near the PV strings to measure irradiation and
temperature by means of the relevant probes. When the distance between the unit SOLAR02 and PVCHECKs does not allow a RF connection, on the display of SOLAR-02, the
symbol ” ” flashes for approx. 30s and then disappears, while PVCHECKs continues searching for the connection for approx. 1 minute. 17. Position the reference cell onto the surface of the PV modules. Please refer to the relevant User Manual for a correct assembly. 18. Put the temperature sensor in contact with the rear side of the module and fasten it with some tape; avoid touching it with your fingers in order not to alter the measurement result. 19. Wait for a few seconds to allow the probes to reach a steady measure and then connect the irradiation probe to input PYRA/CELL and the temperature probe to input TEMP of unit SOLAR-02. 20. Wait for the message “READY” to appear on the display of SOLAR-02 to indicate that the unit has detected the data with solar irradiation > minimum threshold set (see § 5.1.5). 21. With the message “READY” shown on the display, wait for approximately 1 minute in order to take a certain number of samples. 22. Disconnect the irradiation and temperature probes from unit SOLAR-02 and bring the unit near PVCHECKs (max distance 1m).
23. The main unit PVCHECKs must be in EFF mode. If there is no flashing symbol ” “, press key to activate the RF connection search again.
24. Press key on SOLAR-02 to activate the RF connection again. Consequently, the main unit will show the message “active radio connection”.
25. To stop testing, press the GO/STOP key on the instrument and confirm with ENTER that you want to stop recording.
26. The display of the unit SOLAR-02 will display the message “SEND” to indicate that the data will be transferred to the main unit.

EN – 25

PVCHECKs

27. After the automatic data transfer phase, the instrument will 15/05/12 15:35:00

display: Do not

show

any

results

not

exist

the

Irr Pnom

712 3.500

W/m2 kW

installation a “stable irradiance” the minimum irradiance threshold

condition

than

Tc Te Pdc

Display the best performance values if during the recording, the Irradiance values reached the “stable”

Vdc Idc ndc

45 °C 30 °C 3.125 kW 389 V 8.01 A 0.88

condition and its values were higher than the minimum

irradiance threshold

Analys Results

Unable to carry out the analysis if irradiance has never Selection

EFF

reached a steady value higher than the minimum threshold

set, or if no value exists which is valid during the whole

recording (nDC > 1.15).

28. Press SAVE to save the results obtained (see § 7.1) or ESC to exit the screen and go back

to the initial screen.

EN – 26

PVCHECKs
6.2. MEASURING PARAMETERS ON PV PLANT WITHOUT USING SOLAR-02 The “PV installation efficiency” test carried out without using the optional remote unit SOLAR-02 only allows evaluating output electrical parameters of a string or a photovoltaic field (quantities, Vdc, Idc and Pdc), which can be periodically recorded with a programmable integration period (see § 5.2.1). In this mode, the values of Irradiation, Te, Tc, the nDC efficiency value are not evaluated and no result is provided by the instrument.
CAUTION
· The maximum voltage between inputs P and N is 1000VDC. Do not measure voltages exceeding the limits given in this manual. Exceeding these limits could result in electrical shocks to the user and damage to the instrument.
· In order to guarantee the operator’s safety, while making the connections, disable the system being measured by means of the switches/breakers upstream and downstream of the DC/AC converter (inverter).
Fig. 5: Instrument connection for measuring PV installation parameters without SOLAR-02 1. Select the option “NO” as regards the type of remote unit to be used during EFF test
(see § 5.1.4), set the full scale of the DC clamp (see § 5.2.1), a possible correction factor of the DC clamp (see § 0), the integration period and the rated power of the system (see § 5.2.1 and § 5.2.2). 2. In order to guarantee the operator’s safety, disable the system being measured by means of the switches/breakers upstream and downstream of the DC/AC converter (inverter) 3. Connect the inputs P and N respectively to the positive and negative output of the string, respecting the colours indicated in Fig. 5 4. Connect the output connector of the DC clamp to the IDC input.
CAUTION
BEFORE CONNECTING THE DC CLAMP TO THE CONDUCTORS Switch on the clamp, check the LED indicating the status of the clamp’s internal batteries (if present), select the correct range, press the ZERO key on the DC clamp and check on the display of PVCHECKs the actual zeroing of the corresponding Idc value (values up to 0.02A are acceptable).
EN – 27

PVCHECKs

5. Connect the DC current clamp to the positive output conductor of the string,
respecting the direction of the arrow found on the clamp itself as indicated in Fig. 5. Position the clamp so that the jaw is not near the negative conductor.

6. The display shows the first screen which contains the 15/05/12 15:34:26

values of the module/string.

output

electrical

parameters

the I r r
Pnom

– – 3.500

Tc Te Pdc Vdc Idc ndc

– – – – 3.125 389 8.01 – – –

W/m2 kW °C °C kW V A

Go to Start

Selection

EFF

7. Press GO/STOP key on PVCHECKs to start the test. The 15/05/12 15:34:26

message “Waiting start recording…” appears on the I r r

display of the instrument until “00” is reached.

Pnom

– – 3.500

Tc Te Pdc Vdc Idc ndc

45 30 3.125 389 8.01 – – –

W/m2 kW °C °C kW V A

Waiting start recording…

Selection

EFF

8. Upon reaching “00” after pressing the GO/STOP key, the 15/05/12 15:35:00

test is started. Unser these conditions, the message I r r “Recording running…” appears on the instrument’s P n o m

– – 3.500

display.

Tc Te Pdc Vdc Idc ndc

45 30 3.125 389 8.01 – – –

W/m2 kW °C °C kW V A

Recording running…

Selection

EFF

9. At any time it will be possible to analyze the current 15/05/12 15:35:00

recording status by pressing the MENU key. The following information will be shown:

Start : 14/02/00 17:18:00

Period:

Starting date and time of recording The value set for the integration period

IP Number Rec. Time

61 0d 1h

The number of periods elapsed from the beginning of the

recording The remaining memory capacity for recording

Recording running…

Press the ESC key to exit the screen

10. To stop testing, press the GO/STOP key on the instrument and confirm with ENTER that you want to stop recording.
11. Press SAVE to save the results obtained (see § 7.1) or ESC to exit the screen and go back to the initial screen.

EN – 28

PVCHECKs
6.3. QUICK CHECK ON PV MODULES AND STRINGS (IVCK) 6.3.1. Foreword This function carries out a series of quick tests on a PV module/string, measuring in a sequence:
The Voc voltage and the short-circuit current Isc according to the prescriptions of standard IEC/EN62446-1 with the possibility of measuring (by using the relevant probes) also the irradiance and module temperature values.
Insulation resistance measurement (if enabled see § 5.5.1), only carried out in STRING mode (see § 6.4.4) i.e. by automatically producing an internal short circuit between the input terminals P and N and measuring between this short-circuit point and the input terminal E.
Continuity test of protective conductors (if enabled see § 5.5.1) with 200mA between the input terminals E and C of the instrument.
Irradiance measurement can be carried out in one of the following modes:
· Reference cell directly connected to PVCHECKs · Reference cell connected to SOLAR-02 in RF connection with PVCHECKs
Irradiance measurements are always carried out in real time; it is therefore impossible to start a “remote” recording of irradiance values through SOLAR-02.
If the minimum irradiance threshold (see § 5.1.5) is: · = 0 the instrument does not control the presence of the reference cell, irradiance
changes, number of modules and does not display error messages is case it is impossible to calculate Voc and Isc values transposed under STC. This mode is suitable to carry out a test session on a considerable number of strings as quickly as possible. · > 0 (recommended >700W/m2) the instrument carries out all tests provided for I-V test, manages all conditions and error messages for I-V test (wrong num. of mod., temp. out of range, cell presence, min. irr., etc.) and calculated the values of Voc and Isc under STC. This mode is recommended whenever accurate tests are to be carried out on modules/strings being examined.
In general, the result page will include:
· Description of the module used · Irradiance and temperature values (if available) · Average values of Voc and Isc calculated as average of the corresponding values under
OPC on the last 10 tests saved in the memory. If the number of tests is < 10, the average is calculated on the number of available tests. The first test will display dashes in the field “average values” as there are no previous tests on which to calculate an average. · The values of Voc and Isc measured under OPC as well as any partial result (only available if STC values are not available) obtained by comparison with average values. · The values of Voc and Isc calculated under STC (if available) and any partial result obtained by comparing the values calculated under STC with the nominal ones (inserted in DB modules). · The overall test outcome (OK(NO). The overall result will be calculated based on the partial results obtained: Based on partial results under STC (if these are available) Based on partial results under OPC (if STC values are not available)
The instrument will not display any overall result if no partial result is available.
EN – 29

PVCHECKs

6.3.2. Carrying out an IVCK quick test without measuring irradiance
CAUTION
Do not use the instrument for IVCK tests on PV modules with efficiency >19%. Check the technical characteristics of the PV modules before carrying out the tests in order to avoid possible damage to the instrument
CAUTION
· The maximum voltage between inputs P, N, E and C is 1000VDC. Do not measure voltages exceeding the limits given in this manual
· Do not perform test on PV modules or strings connected to the DC/AC converter · The maximum current which can be measured by the instrument is 15A.
Before carrying out the measures of IVCK and Insulation in “STRING” mode, always ensure that the instrument is connected to ONE STRING and not more strings in parallel to avoid possible damage of it

1. Switch on the instrument by pressing the ON/OFF key.

2. Check that the remote unit SOLAR-02 is not selected (see § 5.1.4 setting NO)

3. Check that the value of minimum irradiance set in section “Irradiance” (see § 5.1.5) is

equal to 0.

2. Position the cursor onto IVCK by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the screen to the side: The meaning of the parameters is the

Module Vdc
Irr

: SUNPWR318 : 0.0 V
: – – – W/m2

following:

: —

Module type of module being tested

Voc,Isc:

Vdc value of output measured in real time

voltage

from

module/string

Ri(1000V)

– – – M

Irr value of irradiation measured in real time

Rpe (Cal)

—

Tc value of module temperature (see § 5.5.1) Voc, Isc section with display of result OK/NO of

Voc and Isc measurement

Selection

IVCK

Ri() the value in brackets may be NO/selected test

voltage (see § 5.5.1). The value of Ri indicates the

insulation resistance

Rpe() the value in brackets may be NO, Cal or

NoCal (see § 5.5.1). The value of Rpe indicates the

result of the continuity test.

3. Press the ENTER key, select “Settings” and confirm again with ENTER. Set the

instrument as indicated in § 5.5.1

4. If necessary, press the ENTER key, select “Reset Averages” and confirm again with

ENTER. If necessary, carry out this operation as indicated in § 6.3.4

5. If necessary, press the ENTER key, select “Leads calibration” and confirm again with

ENTER. If necessary, carry out this operation as indicated in § 6.5.2

6. Connect the instrument to the module/string being tested and, if necessary, to the main

earth node of the system and to the earthed metal masses as shown in Fig. 6. In

particular, connect the negative output pole of the module/string to terminal N and the

positive output pole of the module/string to terminal P.

EN – 30

PVCHECKs
CAPTION:
E: Green cable C: Blue cable P: Red cable N: Black cable
1. PV module/string 2. Main system earthing 3. Earthed metal structure in
the system

Fig. 6: Connection for IVCK test without irradiance measurement

CAUTION
Upon pressing the GO/STOP key, different error messages can be displayed by the instrument (see § 6.6) and, therefore, the test cannot be started. Check and eliminate, if possible, the problem causing the error message before going on with the test.

9. Press GO/STOP to start the test. In case no error15/05/12 15:34:26

conditions occur, the instrument “Measuring…” and the measure

displays the message of open-circuit voltage

Mod Vdc
Irr

: SUNPWR318

: 548.0 V

: 0

W/m2

between the terminals P and N and of short-circuit current T c

: Auto °C

(for Isc values 15A).

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)

—

Measuring…

Selection

IVCK

10.When Voc and Isc measurements are complete, the15/05/12 15:34:26

message “OK” is shown in case the result of positive (measured values within the tolerances

the set

test is on the

Modu Vdc
Irr

instrument)

: SUNPWR318 : 548.0 V

: 0

W/m2

: Auto °C

11.With insulation measurement selected, the instrument V o c , I s c : goes on with the test keeping terminals P and N shortcircuited, and carrying out the test between this point and R i ( 1 0 0 0 V )

116

OK M OK

terminal E for the time necessary to obtain a steady value. R p e ( C a l )

—

12.The value of insulation resistance is shown in field “Ri”

and the message “OK” appears in case the result of the

Measuring…

test is positive (measured value higher than the minimum Selection

IVCK

limit value set on the instrument).

EN – 31

PVCHECKs

13.With continuity measurement selected, the instrument15/05/12 15:34:26

goes on by opening the test between terminals E

short-circuit and C.

and

carrying

out

the

Module Vdc
Irr

: SUNPWR318

: 548.0 V

: 0

W/m2

14.The value of resistance in the continuity test is shown in T c

: Auto °C

field “Rpe” and the message “OK” appears in case the V o c , I s c :

result of the test is positive (measured value lower than

the maximum limit value set on the instrument).

Ri(1000V)

116

OK M OK

15.The message “Outcome:OK” is finally shown by the R p e ( C a l )

2.00 OK

instrument in case the result of all performed tests is

positive.

Outcome: OK

IVCK

16.Press the arrow key to show the following page in 15/05/12 15:34:26

which the values of parameters Voc and Isc are shown.

Module: Irr

It shows:

Tc (AUTO)

SUNPWR210 —W/m2 –°C

The module being used The average values of

Voc

and

Isc

under

OPC

VocAvg@OP C IscAvg@OPC

647 V 5.43 A

conditions The values of Voc and Isc measured under OPC and

Voc@OPC Isc@OPC Voc@STC

647V OK 5.35A OK
—V

the relevant partial results obtained by comparison with the average values.

Isc@STC

—

Outcome: OK

IVCK

In general:

EsitoVoc@OPC = OK

se 100 VocAvg@OPC -Voc@OPC (Tol Voc + 4%)
V ocA v g@ OPC

Esito Isc@OPC = OK

se 100 IscAvg@OPC – Isc@OPC (Tol Isc+ 4%)
IscA v g@ OPC

The overall value of the results:

o OK: if all results under OPC are OK, o NO if one of the results under OPC is NO
17.Press the key to go back to the previous screen. 18.Press the SAVE key to store the test result in the instrument’s memory (see § 7.2) or
the ESC/MENU key to exit the screen without saving and go back to the main measuring screen.

CAUTION
The average values of Voc and Isc are displayed in the results’ page. These values include the average values of Voc and Isc under OPC conditions calculated as mean of the last 10 tests previously saved. If the user has carried out and saved a number of tests <10 or reset the average values (see § 6.3.4) the average value displayed during test N+1 will be calculated on the available N values.

EN – 32

PVCHECKs

6.3.3. Carrying out an IVCK quick test and measuring irradiance

CAUTION
Do not use the instrument for IVCK tests on PV modules with efficiency >19%. Check the technical characteristics of the PV modules before carrying out the tests in order to avoid possible damage to the instrument

CAUTION

· The maximum voltage between inputs P, N, E and C is 1000VDC. Do not measure voltages exceeding the limits given in this manual.

· Do not perform test on PV modules or strings connected to the DC/AC converter

· The maximum current which can be measured by the instrument is 15A. Before carrying out the measures of IVCK and Insulation in “STRING” mode, always ensure that the instrument is connected to ONE STRING and not more strings in parallel to avoid possible damage of it

1. Switch on the instrument by pressing the ON/OFF key. 2. Irradiance measurement is carried out in one of the following modes:
Measurement by reference cell directly connected to PVCHECKs Measurement by reference cell connected to SOLAR-02 unit in RF with PVCHECKs
3. Check that the settings of remote unit SOLAR-02 are consistent with the type of

measurement to be carried out (see § 5.1.4). 4. Check the minimum irradiance value set (see § 5.1.5).

5. Position the cursor onto IVCK by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the screen to the side: The meaning of the parameters is the

Module Vdc Irr

: SUNPWR318

: 0.0 V

: 0

W/m2

following:

: Auto °C

Module type of module being tested

Voc,Isc:

Vdc value of output measured in real time

voltage

from

module/string

Ri(1000V)

– – – M

Irr value of irradiation measured in real time

Rpe (Cal)

—

Tc value of module temperature (see § 5.5.1)

Voc, Isc section with display of result OK/NO of

Voc and Isc measurement

Selection

IVCK

Ri() the value in brackets may be NO/selected test

voltage (see § 5.5.1). The value of Ri indicates the

insulation resistance Rpe() the value in brackets may be NO, Cal or
NoCal (see § 5.5.1). The value of Rpe indicates the

result of the continuity test.
6. Press the ENTER key, select “Settings” and confirm again with ENTER. Set the instrument as indicated in § 5.5.1

7. If necessary, press the ENTER key, select “Average Reset” and confirm again with ENTER. Carry out this operation as indicated in § 6.3.4
8. If necessary, press the ENTER key, select “Cable calibration” and confirm again with ENTER. Carry out this operation as indicated in § 6.5.2
9. Mount the rod onto the disc of the optional accessory M304 and keep it in touch with

the module’s surface. Make sure that the shadow cast by the rod onto the disc falls within the “limit internal circle” on the disc itself (see Fig. 7). If this is not the case, the incidence angle between the sun rays and the module surface is too high and,

therefore, the measurements carried out by the instrument CANNOT be considered

reliable. Repeat the same operations at another daytime.

EN – 33

PVCHECKs
10. Fasten the bracket to the module by using the set of screws supplied with the HT304k optional reference cell and mount the cell on it, if possible, with output terminals facing downwards. Rotate the cell until it rests on the tang found on the bracket so that the cell is perfectly parallel to the surface of the module, then fix it with the relevant screws provided.
Fig. 7: Positioning the inclinometer M304 11. Connect the output of the cell corresponding to the type of module being tested to the
IRR. input of the instrument using the cable supplied with the cell, or to the PYRA/CELL input of the remote unit SOLAR-02, if used (see Fig. 8 and Fig. 9) 12. If used, connect the temperature sensor to the TEMP input of the instrument and fasten it to the backside of the module under a cell using some adhesive tape. As an alternative, connect the sensor to the TEMP input of the remote unit SOLAR-02, if used (see Fig. 8 and Fig. 9) 13. Connect the instrument to the module/string being tested and, if necessary, to the main earth node of the system and to the earthed metal masses as shown in Fig. 8 and Fig. 9. In particular, connect the negative output pole of the module/string to terminal N and the positive output pole of the module/string to terminal P.
CAUTION
In case the remote unit SOLAR-02 is used for measuring irradiance, make sure that the RF communication with the master unit PVCHECKs is always active (symbol ” ” on and steady on the display).
CAPTION:
E: Green cable C: Blue cable P: Red cable N: Black cable
1. PV module/string 2. Main system earthing 3. Earthed metal structure in the
system 4. Reference cell for irradiance
measurement 5. Temperature sensor (if
required)
EN – 34

PVCHECKs

Fig. 8: Connection for IVCK test with direct irradiance measurement CAPTION:

E: Green cable C: Blue cable P: Red cable N: Black cable

1. PV module/string

2. Main system earthing

3. Earthed metal structure in the

system

4. Reference cell for irradiance

measurement

5. Temperature sensor (if

required)

6. Unità

remota

SOLAR-

02Remote unit SOLAR-02

Fig. 9: Connection for IVCK test with irradiance measurement through SOLAR-02

14.In the initial screen of IVCK mode, the following values 15/05/12 15:34:26

are displayed in real time: Module type of module being tested

Module Vdc
Irr

Vdc value of output voltage from module/string

Irr irradiance (from a direct measurement or V o c , I s c :

: SUNPWR318 : 548.0 V : 856 W/m2
: Auto °C

SOLAR-02 connected via RF) Tc modulo temperature (in MAN or AUX mode) and

Ri(1000V)

– – – M

the relevant measuring mode, or “- – -” in AUTO mode R p e ( C a l )

—

In case, the symbol ” ” of RF connection with

SOLAR-02

Selezione

IVCK

CAUTION

Upon pressing the GO/STOP key, different error messages can be displayed by the instrument (see § 6.6) and, therefore, the test cannot be started. Check
and eliminate, if possible, the problem causing the error message before going
on with the test.

15.Press GO/STOP to start the test. In case no error15/05/12 15:34:26

conditions occur, the instrument “Measuring…” and the measure

displays the message of open-circuit voltage

Mod Vdc
Irr

ule

: SUNPWR318 : 548.0 V
: 856 W/m2

between the terminals P and N and of short-circuit current T c

: Auto °C

(for Isc values 15A).

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)

—

Measuring…

Selection

IVCK

EN – 35

PVCHECKs

16.When Voc and Isc measurements are complete, the15/05/12 15:34:26

message “OK” is shown in case the result of positive (measured values within the tolerances

the set

test is on the

Mod Vdc
Irr

ule

instrument)

: SUNPWR318 : 548.0 V : 856 W/m2
: Auto °C

17.With insulation measurement selected, the instrument V o c , I s c : goes on with the test keeping terminals P and N shortcircuited and carrying out the test between this point and R i ( 1 0 0 0 V )

116

OK M OK

terminal E for the time necessary to obtain a steady value. R p e ( C a l )

—

18.The value of insulation resistance is shown in field “Ri” and

the message “OK” appears in case the result of the test is

Measuring…

positive (measured value higher than the minimum limit Selection value set on the instrument).

IVCK

19.With continuity measurement selected, the instrument15/05/12 15:34:26

goes on by opening the test between terminals E

short-circuit and C.

and

carrying

out

the

Module Vdc
Irr

20.The value of resistance in the continuity test is shown in T c

: SUNPWR318 : 548.0 V : 856 W/m2
: Auto °C

field “Rpe” and the message “OK” appears in case the V o c , I s c :

result of the test is positive (measured value lower than

the maximum limit value set on the instrument).

Ri(1000V)

116

OK M OK

21.The message “Outcome:OK” is finally shown by the R p e ( C a l )

2.00 OK

instrument in case the result of all performed tests is

positive.

Outcome: OK

IVCK

22.Press the arrow key to show the following page in 15/05/12 15:34:26

which the values of parameters Voc and Isc are shown. It shows:

Module: Irr Tc (AUTO)

SUNPWR210 —W/m2 57°C

The module being used The value of irradiance

VocAvg@OPC IscAvg@OPC Voc@OPC

647V 5.43 A 647V

The value of temperature of the module The average values of Voc and Isc under OPC

Isc@OPC Voc@STC Isc@STC

5.35 A 787V OK 5.72A OK

The values of Voc and Isc measured under OPC The values of Voc and Isc calculated under STC and the

Outcome: OK IVCK

relevant partial results obtained by comparison with the

nominal values.

In general:

( ) Esito Voc@STC = OK

100 VocNom@STC – Voc@STC Tol Voc + 4% VocNom@S TC

( ) Esito Isc@STC = OK

100 IscNom@STC – Isc@STC Tol Isc + 4% IscNom@S TC

The rated values of Voc and Isc are the values found in the instrument’s internal modules’ DB (see § 5.6).
The overall value of the results: o OK: if all results under STC are OK, o NO if one of the results under STC is NO

23.Press the key to go back to the previous screen.

EN – 36

PVCHECKs

24.Press the SAVE key to store the test result in the instrument’s memory (see § 7.2) or the ESC/MENU key to exit the screen without saving and go back to the main measuring screen.

6.3.4. Reset Averages If irradiance values are measured, the instrument provides a result by comparing the values measured with the average values calculated according to the previously saved measured. In this case, the average values calculated by the instrument are therefore particularly important. In case a new measurement campaign is started with significant variations in irradiance or temperature, it is advisable to set the average reference values to zero in order to make new calculations based on new measurements. To reset the average values, please keep to the following steps:

1. In IVCK mode, press the ENTER key, select “Reset 15/05/12 15:34:26

Averages” and confirm by pressing ENTER again to zero the average values calculated until that moment.

Module Vdc
Irr

: SUNPWR318

: 0.0 V

: 0

W/m2

: Auto °C

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)
Leads calibration Reset Averages Settings Selection

—
IVCK

The average values are automatically reset also modifying and then saving one of the following parameters:
Type of PV module Number of modules per string

The average values are not reset if the operator changes operating mode and then goes back to this mode.

EN – 37

PVCHECKs

6.3.4.1. Anomalous situations when performing IVCK tests

1. In case the instrument detects a voltage higher than 15/05/12 15:34:26

1000V at terminals P-N, P-E

and

N-E, it does not

carry

Module Vdc

out the test, gives out a long sound and displays the I r r

: SUNPWR318

: 0.0 V

: 0

W/m2

message “Vin > 1000”.

: Auto °C

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)

—

Vin > 1000

Selection

IVCK

2. In case the instrument detects a voltage lower than 15V 15/05/12 15:34:26

at terminals P and N, it does not carry out the test, gives

Module Vdc

out a long sound and displays the message “Low I r r

: SUNPWR318

: 0.0 V

: 0

W/m2

voltage”.

: Auto °C

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)

—

Low voltage

Selection

IVCK

3. In case the instrument detects a voltage higher than > 5V 15/05/12 15:34:26

at terminals E and C, it does not carry out the test, gives out a long sound and displays the message “Voltage >

Module Vdc
Irr

: SUNPWR318

: 0.0 V

: 0

W/m2

Lim”.

: Auto °C

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)

—

Voltage > Limit

Selection

IVCK

4. In case the instrument detects an Isc current higher than 15/05/12 15:34:26

15A, it does not carry out the test, gives out a long sound

Module Vdc

and displays the message “Isc current too high”.

Irr

: SUNPWR318

: 0.0 V

: 0

W/m2

: Auto °C

Voc,Isc:

Ri(1000V)

– – – M

Rpe (Cal)

—

Isc current too high

Selection

IVCK

EN – 38

PVCHECKs

6.4. MEASUREMENT OF INSULATION ON PV MODULES/STRINGS/FIELDS (M) 6.4.1. Foreword The purpose of this function is to measure the insulation resistance of the active conductors of a module, string, of a whole PV field and of possible unearthed metal masses according to the prescriptions IEC/EN62446-1 guideline. In general, the instrument measures insulation in the following modes:
FIELD mode used for measuring insulation resistance of a PV field (photovoltaic generator) consisting in one or more strings connected in parallel. The instrument performs the measurement on the Positive and Negative poles of the PV field.
TIMER mode the instrument measures continuously (with a max duration of 300s) on terminal “P” only, displaying the minimum resistance value obtained at the end of the selected time. It may be used for measuring the insulation resistance of more unearthed metal masses.
STRING mode used for measuring insulation only on single PV modules or strings, automatically creating an internal short-circuit between the Positive and Negative poles, with no need to use an external switch to short-circuit the positive and negative terminals and measuring between this short-circuit point and the installation earthing.

6.4.2. Measuring insulation FIELD mode

1. Position the cursor onto M by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the I n s . T e s t : 1 0 0 0 V

screen to the side:

Ri min

: 1.0

2. Press the ENTER key, activate “Settings” and possibly M o d e

: Field

change the desired parameters (see § 5.4). The following V t e s t – – – V – – – V

parameters are shown on the display:

Ri(+)

– – – M

Ins. Test selected test voltage (250, 500 or R i ( – )

– – – M

1000VDC)

Ri min minimum limit threshold for insulation

– – – M

measurement

Selection

Mode measuring mode: FIELD

Vtest real test voltages applied respectively

between the Positive pole and the Negative pole of 15/05/12 15:34:26

the field respect the earthing

Ri (+) insulation resistance measurement between the Positive pole of the PV field and the earthing Ri (-) insulation resistance measurement between

VPN VEP VEN

– – – – – – –

V V V

the Negative pole of the PV field and the earthing Rp final value of the measurement obtained by the

parallel of Ri(+) e Ri(-) values which is compared with

the Ri min limit by the instrument key access to the second

page

with

the

Selection

measured values of VPN, VEP and VEN voltages

3. Connect the instrument to the PV field being tested and to the main earth node of the system shown in Fig. 10. In particular, connect the negative output pole of the PV field to terminal N and the positive output pole of the PV field to terminal P.

EN – 39

PVCHECKs
CAPTION:
E: Green cable P: Red cable N: Black cable
1. Unearthed PV field 2. Main system earthing

Fig. 10: Instrument connection for insulation measurement in FIELD mode

4. Press GO/STOP to start the test. In case no error 15/05/12 15:34:26

conditions occur, the instrument displays the message I n s . T e s t : 1 0 0 0 V

“Measuring…” as shown in the screen to the side.

Ri min

: 1.0

Mode

: Field

Vtest 1043 1057 V

Ri(+)

– – – M

Ri(-)

– – – M

Measuring…

Selection

5. When measurement (with a fixed duration of 10s) is 15/05/12 15:34:26

complete, the instrument provides the values Ri (+) and T e s t I s o Ri (-), respectively the insulation resistance of the R l i m

: 1000 V

: 1.0

Positive and Negative poles of the PV field being tested. M o d o

: Campo

If both results are higher than the minimum limit set, the V t e s t 1 0 4 3 1 0 5 7 V

instrument displays the message “Outcome:OK”; R i ( + )

> 100 M

otherwise, it displays the message “Outcome: NO” as R i ( – )

shown in the screen to the side. Press the SAVE key to store

the

test

result

the

> 100
69 Outcome: OK

M M

instrument’s memory (see § 7.2) or the ESC/MENU key to exit the screen without saving and go back to the main

measuring screen.

EN – 40

PVCHECKs

6.4.3. Measuring insulation TIMER mode

1. Position the cursor onto M by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the I n s . T e s t : 1 0 0 0 V

screen to the side.

Ri min

: 1.0

2. Press the ENTER key, activate “Settings” and possibly M o d e

: Timer

change the desired parameters (see § 5.4). The following V t e s t

— V

parameters are shown on the display:

Ri(+)

– – – M

Ins. Test selected test voltage (250, 500 or T e s t t i m e : 1000VDC)
Ri min minimum limit threshold for insulation Selection measurement
Mode measuring mode: TIMER Vtest real applied test voltage Ri (+) minimum insulation resistance between the
Positive pole and the earthing detected during the whole duration of measurement. Test time test duration which can be set within a
range of 10 300s key access to the second page with the
measured values of VPN, VEP and VEN voltages

10s M

3. Connect the instrument to the possible unearthed metal masses and to the main earth node of the system (see Fig. 11)

CAPTION:

E: Green cable P: Red cable N: Black cable

1. Unearthed PV module/string
2. Main system earthing
3. Unearthed metal mass

Fig. 11: Instrument connection for insulation measurement in TIMER mode
CAUTION
Upon pressing the GO/STOP key, different error messages can be displayed by the instrument (see § 6.6) and, therefore, the test cannot be started. Check and eliminate, if possible, the problem causing the error message before going on with the test.
EN – 41

PVCHECKs

4. Press GO/STOP to start the test. In case no error 15/05/12 15:34:26

conditions occur, the instrument displays the message “Measuring…” as shown in the screen to the side.

Ins. Test Ri min

: 1000 : 1.0

V M

Mode

: Timer

Vtest

1020 V

Ri(+)min

– – – M

Test time: 10s

Measuring…

Selection

5. When measurement is complete, the instrument provides 15/05/12 15:34:26

the Ri(+)min value, i.e. the minimum value of insulation I n s . T e s t : 1 0 0 0 V

resistance of the PV module/string (or of other metal R i m i n

: 1.0

masses) being tested, continuously measured during the M o d e

: Timer

whole duration of measurement. If the result is higher V t e s t

= 1020 V

than the minimum limit set, the instrument displays the R i ( + ) m i n = > 2 0 0 M message “Outcome:OK”; otherwise, it displays the

message “Outcome:NO” as shown in the screen to the side.

Test

time: 200s Outcome: OK

6. Press the SAVE key to store the test result in the

instrument’s memory (see § 7.2) or the ESC/MENU key

to exit the screen without saving and go back to the main

measuring screen.

EN – 42

PVCHECKs

6.4.4. Measuring insulation STRING mode

CAUTION
· The maximum current which can be measured by the instrument is 15A. Before carrying out the measures of Insulation in “STRING” mode, always ensure that the instrument is connected to ONE STRING and not more strings in parallel to avoid possible damage of it
· ALWAYS disconnect the string on test from the inverter before performing the measurement

1. Position the cursor onto M by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the I n s . T e s t : 1 0 0 0 V

screen to the side.

Rl min

: 1.0

2. Press the ENTER key, activate “Settings” and possibly M o d e

: String

change the desired parameters (see § 5.4). The following V t e s t

— V

parameters are shown on the display:

– – – M

Ins. Test selected test voltage (250, 500 or

1000VDC)

Ri min minimum limit threshold for insulation

measurement

Selection

Mode measuring mode: STRING

Vtest real applied test voltage

Rp final value of the measurement obtained by the

parallel of Ri(+) e Ri(-) values which is compared with

the Ri min limit by the instrument key access to the second page with the

measured values of VPN, VEP and VEN voltages

3. Connect the instrument to the PV module/string being tested and to the main earth

node of the system as shown in . In particular, connect the negative output pole of the

PV field to terminal N and the positive output pole of the PV field to terminal P.

CAPTION:

E: Green cable P: Red cable N: Black cable

1. Unearthed PV module/string 2. Main system earthing

Fig. 12: Instrument connection for insulation measurement in STRING mode EN – 43

PVCHECKs

CAUTION

Upon pressing the GO/STOP key, different error messages can be displayed

by the instrument (see § 6.6) and, therefore, the test cannot be started. Check

and eliminate, if possible, the problem causing the error message before going

on with the test.

4. Press GO/STOP to start the test. In case no error 15/05/12 15:34:26

conditions occur, the instrument displays the message “Measuring…” as shown in the screen to the side.

Ins. Test Ri min

: 1000 : 1.0

V M

Mode

: Stringa

Vtest

= 1020 V

= – – – M

Measuring…

Selection

5. When measurement is complete, the instrument provides 15/05/12 15:34:26

the Ri value, resistance of

i.e. the

the of

minimum value of insulation other objects being tested,

Ins. Test Ri min

: 1000 : 1.0

V M

continuously measured during the whole duration of M o d e

: Stringa

measurement. If the result is higher than the minimum V t e s t

= 1020 V

limit set, the instrument displays the message R p “Outcome:OK”; otherwise, it displays the message

= >100 M

“Outcome:NO” as shown in the screen to the side.

6. Press the SAVE key to store the test result in the instrument’s memory (see § 7.2) or the ESC/MENU key to exit the screen without saving and go back to the main

Outcome: OK M

measuring screen.

EN – 44

PVCHECKs

6.4.4.1. Anomalous situations

1. In any operating mode, in case the instrument detects a 15/05/12 15:34:26

voltage higher than 1000V at terminals P-N, P-E and N- I n s . T e s t : 1 0 0 0 V

E, it does not carry out the test, gives out a long sound R i m i n

: 1.0

and displays the message “Vin > 1000”.

Mode

: String

Vtest

= — V

= – – – M

Vin > 1000

Selection

2. In STRING mode, in case the instrument detects an Isc 15/05/12 15:34:26

current higher than 15A, it does not carry out the test, I n s . T e s t : 1 0 0 0 V

gives out a long sound and displays the message “Isc R i m i n

: 1.0

current too high”.

Mode

: Stringa

Vtest

= — V

= – – – M

Isc current too high

Selection

3. In STRING mode, in case the instrument detects a 15/05/12 15:34:26

current < 0.2A between terminals P and N, it does not carry out the test, gives out a long sound and displays

Ins. Test Ri min

: 1000 : 1.0

V M

the message “Current < Lim”.

Mode

: String

Vtest

= — V

= – – – M

Current < Lim

Selection

4. In STRING mode, in case the instrument detects a 15/05/12 15:34:26

voltage < 15V carry out the

between terminals P and N, it does not test and displays the message “Low

Ins. Test Ri min

: 1000 : 1.0

V M

voltage”.

Mode

: String

Vtest

= — V

= – – – M

Low voltage

Selection

EN – 45

PVCHECKs

6.5. MEASUREMENT OF CONTINUITY ON PV MODULES/STRINGS/FIELDS (LOW) 6.5.1. Foreword The purpose of this measurement is to test the continuity of protective conductors and
equipotential ones (e.g. from rod to earth and connected foreign earth) and earth rods of
SPDs on PV installations. The test must be carried out using a test current > 200mA
according to the prescriptions of IEC/EN62446-1 guideline

6.5.2. Calibration of measuring cables

1. Position the cursor onto LOW by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the R p e m a x :

screen to the side.

Rcal

: —

Fig. 13: Compensation of the measuring cables’ resistance Connect the measuring cables as shown in Fig. 13:

Rpe

= —

Compensation of the measuring cables’ resistance

Itest

= – – – mA

Selection

LOW

Fig. 13: Compensation of the measuring cables’ resistance

2. Press the ENTER key. The instrument shows the 15/05/12 15:34:26

following options: Settings and Leads calibration Use the arrow keys (,) to select “Leads calibration”

RPE max Rcal

: :

1 —

and confirm with ENTER.

Rpe

= —

Itest

= – – – mA

Leads calibration Settings Selection

LOW

4. Press GO/STOP to start calibration. The message 15/05/12 15:34:26

“Measuring…” is shown on the display.

RPE max :

5. At the end of the compensation procedure, in case the R c a l

: —

measured value of resistance is lower than 5, the instrument gives out a double sound to signal the positive

Rpe

= —

result of the test. The following screen appears on the I t e s t

= – – – mA

display:

Measuring…

Selection

LOW

EN – 46

PVCHECKs

6. The value of compensated resistance of the cables which 15/05/12 15:34:26

will be subtracted measures is shown

from all subsequent next to “Rcal” and the

continuity message

RPE max Rcal

: :

1.0 0.02

“Calibration OK” appears on the display. To delete the value of compensated resistance, carry out a

Rpe

= —

new compensation procedure with a resistance higher than I t e s t

= – – – mA

5 such as, for example, with open leads. The value in Rcal

is zeroed on the display.

Calibration OK

Selection

LOW

6.5.3. Measuring continuity

1. Position the cursor onto LOW by using the arrow keys 15/05/12 15:34:26

(,) and confirm with ENTER. The display shows the R P E m a x : 1 . 0

screen to the side.

Rcal

: —

Press the ENTER key, activate “Settings” change the desired parameters (see §

and possibly 5.3.1). The

Rpe

following parameters are shown on the display:

Itest

= — = – – – mA

RPE max maximum threshold for continuity

measurement, which can be selected in a range 1

5 in steps of 1 Rcal the value

resistance

the

measuring

Selection

cables after calibrating them

Rpe the result of continuity measurement

Itest real test current

LOW

3. Press the ENTER key, activate “Cable calibration” (see § 6.5.2) to carry out the initial calibration of the measuring cables.
4. Connect the instrument to the PV module/string being tested and to the main earth
node of the system as shown in Fig. 14

CAPTION:

E: Green cable C: Blue cable

1. PV module/string 2. Main system earthing 3. Earthed metal structure in the
system

Fig. 14: Connection for continuity measurement on structures of the PV installation EN – 47

PVCHECKs

5. Press GO/STOP to start the test. In case no error 15/05/12 15:34:26

conditions occur, the instrument displays the message R P E m a x : 1 . 0

“Measuring…” as shown in the screen to the side.

Rcal

: —

Rpe

= —

Itest

= – – – mA

Measuring…

Selection

LOW

6. At the end of measurement, the instrument provides the 15/05/12 15:34:26

value of resistance of the object being tested. If the result R p e m a x : 1 . 0

is lower than the maximum limit set, the instrument R c a l

: —

displays displays

the message “Outcome:OK”; the message “Outcome:NO” as

otherwise, it shown in the

Rpe

= 0.23

screen to the side.

Itest

= 210 mA

7. Press the SAVE key to store the test result in the

instrument’s memory (see § 7.2) or the ESC/MENU key to

exit the screen without saving and go back to the main

Outcome: OK

measuring screen.

Selection

LOW

EN – 48

PVCHECKs

6.5.3.1. Anomalous situations

1. In case the instrument detects a voltage higher than 5V at 15/05/12 15:34:26

its terminals E and C, it does not carry out the test, gives R P E m a x :

out a long sound and displays the message “Voltage > R c a l

: —

Lim”.

Rpe

= —

Itest

= – – – mA

Voltage > Lim

Selection

LOW

2. In case the instrument detects that the calibrated 15/05/12 15:34:26

resistance instrument

is higher that the measured resistance, gives out a long sound and displays

the the

RPE max Rcal

: :

1 —

message: “Calibration not OK”

Rpe

= —

Itest

= – – – mA

Calibration not OK

Selection

LOW

3. In case the instrument detects a resistance higher than 15/05/12 15:34:26

5 at its terminals, it gives out a long sound, zeroes the R P E m a x :

compensated value and displays the message R c a l

: 0.00

“Calibration reset”.

Rpe

= —

Itest

= – – – mA

Calibration reset

Selection

LOW

EN – 49

PVCHECKs

6.6. LIST OF DISPLAY MESSAGES

MESSAGE Function not available
Data not saved Wrong date
RADIO transmission error SOLAR-02: Firmware incorrect
Firmware incorrect Error 4: contact service
Database full Module already added
Memory full Error: Vmpp >= Voc Error: Impp >= Isc Error: Vmpp * Impp >= Pmax Error: Alpha too high Error: Beta too high Error: Gamma too high Error: Toll too high
Wait data analysis
Download error Error while saving Remote unit undetected Unable to perform analysis Data unavailable Negative voltage
Low voltage Vin > 1000 Wrong no. of modules. Continue? Ref. cell temp. exceeding limits Cell temp. undetected (ENTER/ESC) Low battery Please wait for cooling… Irradiance too low NTC Error Isc current too high Current < Lim EEPROM error: contact service FRAM error: contact service RTC Error: contact service RADIO error: contact service FLASH error: contact service IO EXP error: contact service Voltage > limit Label already assigned
Isc current < Lim
CAUTION: internal short-circuit CAUTION: blown fuse
Reset calibration. Press ENTER. Calibration not OK
Error: Isc offset measurement Rcal > measured R
CAUTION: AC voltage at P-N terminals
Wait for condenser discharge

DESCRIPTION The selected function/characteristic is not available
The instrument was not able to save the data Set a correct system date
The instrument does not communicate via RF with external units Inconsistent SOLAR-02 FW. Update firmware. Unsuitable instrument FW. Update firmware. Internal instrument error
The number of modules added to the internal DB is > 30 The name of the module has already been added to the DB
Instrument memory full upon pressing the GO key Check module settings inside DB Check module settings inside DB Check module settings inside DB Check module settings inside DB Check module settings inside DB Check module settings inside DB Check module settings inside DB
Download data from SOLAR-02 and wait for the result of PV efficiency test
Contact service department Problems with the access to memory area The instrument does not detect any remote unit SOLAR-02 Problems with the data downloaded from SOLAR-02. Check settings.
Generic error. Repeat the test. Check the polarity of the instrument’s input terminals Check the voltage between input terminals P and N
Voltage between input terminals > 1000V Set no. of modules inconsistent with measured Voc Temperature measured by reference cell too high
Measurement not carried out on module cell
Low battery charge. Insert new batteries. Instrument overheated. Wait before resuming the test. Irradiance value lower than the minimum threshold set Internal NTC efficiency jeopardized. Contact service department
Measured Isc current > 15A Current between P and N lower than the minimum detectable value
Internal instrument error Internal instrument error Internal instrument error Internal instrument error Internal instrument error Internal instrument error Voltage between terminals E and C > 10V Change the numeric reference of the marker associated with the measure Isc current lower than the minimum detectable value. Contact service
department Contact service department Contact service department Resistance value of input cables > 2 Calibrated resistance value > measured resistance
Internal instrument error Calibrated resistance value > measured resistance
Presence of AC input voltage
Wait for discharge of tested object after insulation

EN – 50

PVCHECKs

7. STORING DATA
The instrument allows saving max 999 measured values. The saved data can be recalled at display and deleted at any moment, and can be associated to reference numerical markers relevant to the installation name, the PV string and the PV module (max 250 markers).

7.1. SAVING EFFICIENCY MEASURES

1. Press the SAVE key with a measured result shown on the 15/05/12 15:34:26

display. The instrument shows containing a virtual keyboard.

the

screen

the

side,

Irr Pnom

712 3.500

W/m2 kW

Use the arrow keys (,) and ( , ) to add a short description (max 13 chars) relevant to the test performed.

Tc Te Pdc

°C

3.125

Press the SAVE key again to confirm ESC/MENU to exit without saving.

data

saving

KEYBOARD PV PLANT
A B CD E F GH I J K L MNOP

Q R S T U V WX Y Z – + 0 1 2 3

4 5 6 7 8 9 SPACE

DEL

SAVE/ESC

7.2. SAVING IVCK, M AND LOW MEASURED RESULTS

1. Press the SAVE key with a measured result shown on the 15/05/12 15:34:26

display. The instrument shows containing the following items:

the

screen

the

side,

MEASURE Area Field

: : :

The first memory location available (“MEASURE”) The 1st marker level (ex: Area)

Inverter

Comment :

004 001
001 001

The 2nd marker level (ex: Field)

The 3rd marker level (ex: Inverter)

The field “Comment” in which the operator can include

a short description (max 13 char) for the system.

Modification SAVE

2. Each marker level can be assigned to different labels (5 Inverter

labels are built-in and 5 labels can be customized). Select the desired marker level using the arrow keys ( , ) and

Area Building Field

press the ENTER key to get available strings. Select one of the items available using the

arrow

keys

Plant Comment

(,) and confirm with ENTER.

004 002
001 001 :

Modification SAVE

4. Before performing a test, by mean Topview PC software, Solar Power

it’s possible to add custom strings into the list of marker level strings. In this case, the new values may be selected

PVPlant factory HT instruments HT ITALIA

as an alternative to the buil-in ones, as shown in the PV installation

screen to the side.

Inverter Area

Building

Field

Plant

Modification

004 002
001 001 SAVE

EN – 51

PVCHECKs

CAUTION
· Marker strings can be uploaded into the instrument by mean of the TopView software through a PC connection (“Marker manager”).
· It is possible to add up to 5 custom strings for each marker, further to the 5 provided as default values.
· Deletion of custom strings can only occur through the TopView software. (The buil-in strings cannot be eliminated.)

5. Use the arrow keys (,) and ( , ) with the virtual 15/05/12 15:34:26

keyboard to add a short description (max 13 chars) in the “Comment” field. Press ENTER to digit any character of

MEASURE HT ITALIA StringT

: : :

004 002
001

the desired name.

Module1

001

Comment :

TASTIERA

TEST IMP. HT

A B CD E F GH I J K L MNOP

Q R S T U V WX Y Z – + 0 1 2 3

4 5 6 7 8 9 SPACE

DEL

SAVE/ESC

6. Press the SAVE key again to confirm data saving or ESC/MENU to exit without saving.

EN – 52

PVCHECKs

7.3. OPERATIONS WITH RESULTS

7.3.1. Recalling on the display the PV efficiency results

1. Press the ESC/MENU key to go back to the main menu, 15/05/12 15:34:26

select “MEM” and confirm with ENTER to access the MEM

TYPE

section where saved values are displayed. The screen to 001

SMP 08/04/2012

the side is shown by the instrument and contains the 002

REC 13/05/2012

saved tests.

003

2. Using the arrow keys (,) and the arrow key , select

*REC 14/05/2012

“Recall”, then “Efficiency” and confirm with ENTER to

Efficiency

display the results of test only. Using the arrow key it is

possible

display

the

Rec IVCK,M, Open

LOW

following labels: TYPE indicates the type of data saved: “REC” for a

Delete Selection

MEM – EFF

check with a precise final result YES/NO, “*REC” when

the instrument does not have the irradiance and

temperature values recorded by SOLAR-02 and “IST”

for saving the instant conditions on the display. DATE indicates the date and time in which the

datum has been saved in the instrument. DESCRIPTION indicates the description provided by

the user when saving the datum.

4. Select the type of “SMP” datum, the item “Open” and

confirm with ENTER. The instrument shows the following

screen

5. Select the type of “REC” datum, the item “Open” and 15/05/12 15:35:00

confirm with ENTER. The containing the final results.

instrument

shows

the

screen

Irr Pnom

712 3.500

W/m2 kW

Selecting the “*REC” datum type, the item “View” and confirming with ENTER, the message “Unable to perform

Tc Te Pdc

analysis” is displayed due to the values recorded by SOLAR-02

irradiance/temperature missing. The partial

Vdc Idc ndc

45 °C 30 °C 3.125 kW 389 V 8.01 A 0.88

values of this measurement are only visible after

downloading the data onto the PC (see § 8) using

Analysis Results

TopView.

Selection

EFF

EN – 53

PVCHECKs

7.3.2. Recalling on the display the results of IVCK, M and LOW measurements

1. Press the ESC/MENU key to go back to the main menu, 15/05/12 15:34:26

select “MEM” and confirm with ENTER to access the MEM DATE

TYPE

section where saved values are displayed. The screen to 001 08/04/2012 10:38 LOW

the side is shown by the instrument and contains the 002 13/04/2012 12:15 M

saved tests.

003 15/05/12 12:20 IVCK

Using the arrow keys (,) and the arrow key , select
“Recall”, then “IVCK” and confirm with ENTER to display the results of the I-V curve only.

Efficiency Rec IVCK,M, LOW Open

3. The field “DATE” indicates the date/time in which the D e l e t e

result of measurement has been saved, the field “TYPE” Selection

MEM- IVCK

indicates the type of test carried out (LOW, M, IVCK).

4. Use the arrow key to go to the “Comments” label

15/06/12 15:34:26

5. The instrument will display the comment inserted by the MEM

Comments

operator during the saving procedure (see § 7.2) as 001

PV PLANT 1

regards the system.

002*

PV PLANT 2

6. The symbol “*” next to the measurement number indicates

that the instrument has performed the tests with recording

of irradiance and temperature values through the remote

unit, but these values have not been transferred or are not

available. For these measurements, the values Selection translated to STC will not be available.

MEM- IVCK

7. Press ESC/MENU to exit the screen and go back to the

main menu.

EN – 54

PVCHECKs

7.3.2.1. Accessing the data saved in the memory Numeric display

1. Select a line corresponding to a saved result and press 15/05/12 15:34:26

ENTER.

MEM

Comments

2. Select “Open” and press ENTER to open the section 001

PV PLANT 1

where measurement results are displayed as:

002*

Numeric screens of measured parameters under

PV PLANT 2

standard (STC) conditions and under operating

(OPC) conditions for IVCK tests Numeric screens of measured

parameters

when

Open Recall

measuring insulation (M) and continuity (LOW). D e l e t e

Selection

MEM-IVCK

3. For IVCK test, there are the values of the following 15/05/12 15:34:26

parameters: The module being used

Module: Irr

SUNPWR210
903W/m2

The value of irradiance The value of temperature of the module

Tc (AUTO) VocAvg@OPC IscAvg@OPC

57 °C – – -V – – -A

The

average

values

Voc

and

Isc

under

OPC

Voc@OPC Isc@OPC

647 V 5.35 A

conditions

Voc@STC

787V OK

The values of Voc and Isc measured under OPC conditions
The values of Voc and Isc calculated under STC and

Isc@STC

5.72 A

Outcome: OK

Selection

IVCK

the relevant partial results obtained by comparison with

the nominal values.

4. For M test in FIELD mode there are the values of the 15/05/12 15:34:26

following parameters: Set rated test voltage Minimum threshold set on insulation measurement The type of mode·selected The real value of the applied test voltage The insulation value of positive pole Ri (+) The insulation value of positive pole Ri (-)

Ins. Test :

Ri min

Mode

Vtest 1065

Ri (+)

Ri (-)

1000 V

1.0

Field

1064 V

>100 M

72 M

Outcome: OK

Selection

5. For M test in TIMER mode there are the values of the 15/05/12 15:34:26

following parameters: Set rated test voltage

Ins. Test : 1000 V

Ri min

: 1.0

Minimum threshold set on insulation measurement

Mode

: Timer

The type of selected mode

Vtest

1020 V

The real value of the applied test voltage

Ri(+)min

The Ri(+) minimum value of insulation resistance of

>200 M

the PV module/string (or of other metal masses) Test time:

10s

being tested, continuously measured during the

whole duration of measurement. The set measuring time

Oucome: OK

Selection

EN – 55

PVCHECKs

6. For M test in STRING mode there are the values of the 15/05/12 15:34:26

following parameters: Set rated test voltage Minimum threshold set on insulation measurement The type of mode selected The real value of the applied test voltage The Rp final value of the measurement obtained by

Ins. Test Ri min Mode
Vtest
Rp

: 1000 V

: 1.0

: String

1020 V

>200 M

the parallel of Ri(+) e Ri(-) values which is compared

with the Ri min limit by the instrument

Outcome: OK

Selection

7. For LOW test, there are the values of the following 15/05/12 15:34:26

parameters: Limit threshold set for continuity measurement

RPE max :

1.0

Rcal

: —

Value of calibration resistance of test cables The value of resistance of the object being tested

Rpe

= 0.99

The real value of the applied test current

Itest

= 212. mA

Outcome: OK

Selection

LOW

7.3.3. Deleting data from the memory

1. Within the list of saved results, press ENTER to display 15/05/12 15:34:26

the submenus.

MEM

2. Select “Delete”, then press . The instrument allows 001

TYPE SMP 08/04/2012

selecting the following items:

002

REC 13/04/2012

Delete Last deletes the last saved test Delete All deletes the whole memory content 3. Use the arrow keys (,) to select the desired option,

then press the ENTER key to confirm selection

Recall

4. Press ESC/MENU to exit the screen and go back to the O p e n D e l e t e L a s t

main menu.

Delete Delete All

Selection

MEM EFF

EN – 56

PVCHECKs

8. CONNECTING THE INSTRUMENT TO THE PC

CAUTION
· The connection between instrument and PC is realized by means of cable C2006
· To transfer data to a PC, you must have previously installed the Topview management software, which can be downloaded from the link: https://www.ht-instruments.com/download
· Before connecting, it is necessary to select the port to be used on the PC. To set these parameters, launch the TopView software and refer to the programme’s on-line help.
· The selected port must not be engaged by other devices or applications, e.g. a mouse, a modem, etc. Close any applications running using the Microsoft Windows Task Manager function.
· The optical port emits invisible LED radiations. Do not directly observe with optical instruments. Class 1M LED apparatus according to standard IEC/EN 60825-1.
To transfer data to the PC, follow this procedure:
1. Switch on the instrument by pressing the ON/OFF key. 2. Connect the instrument to the PC via the provided optical/USB cable C2006. 3. Press the ESC/MENU key to open the main menu. 4. Use the arrow keys (,) to select “PC” to access data transfer mode and confirm
with ENTER.
15/05/12 15:34:26

IVCK Test mod./strings

LOW PE Continuity Test

M Insulation Test

EFF Efficiency Test

SET Settings

Archive modules

MEM Recall Memory

Trasf. data to PC

Press Enter to sel.

5. The instrument shows the following screen:

15/05/12 15:34:26

Connecting to PC

MENU
6. Use TopView controls to activate data transfer (please refer to the on-line help of the programme).
EN – 57

PVCHECKs
9. MAINTENANCE
9.1. GENERAL INFORMATION The instrument you purchased is a precision instrument. While using and storing the instrument, carefully observe the recommendations listed in this manual in order to prevent possible damage or danger during use. Do not use the instrument in environments with high humidity levels or high temperatures. Do not expose to direct sunlight. Always switch off the instrument after use. In case the instrument is not to be used for a long time, remove the batteries to avoid liquid leaks that could damage the instrument’s internal circuits.
9.2. BATTERY REPLACEMENT When the low battery symbol ” ” appears on the LCD display, or if during a test the instrument shows the message “low battery”, it is necessary to replace the batteries.
CAUTION
Only expert and trained technicians should perform this operation. Before carrying out this operation, make sure you have disconnected all cables from the input terminals.
1. Switch off the instrument by pressing and holding the ON/OFF key. 2. Remove the cables from the input leads. 3. Loosen the battery compartment cover fastening screw and remove the cover. 4. Remove all the batteries from the battery compartment and replace them only with new
batteries of the same type only (see § 10.5) making sure to respect the indicated polarities. 5. Restore the battery compartment cover into place and fasten it by means of the relevant screw. 6. Do not scatter old batteries into the environment. Use the relevant containers for disposal.
9.3. CLEANING THE INSTRUMENT Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.
9.4. END OF LIFE CAUTION: this symbol indicates that the appliance, its accessories and the internal batteries must be collected separately and correctly disposed of.
EN – 58

PVCHECKs

10. TECHNICAL SPECIFICATIONS
10.1. TECHNICAL SPECIFICATIONS FOR PV INSTALLATION EFFICIENCY Accuracy is indicated as [%reading + (no. of digits) * resolution] at 23°C ± 5°C, <80%RH

DC Voltage Range [V] 5.0 199.9
200.0 999.9

Resolution [V] 0.1
0.5

Accuracy (1.0rdg + 2dgt)

DC Current (by means of external clamp transducer)

Range [mV]

Resolution [mV]

Accuracy

-1100 -5 5 1100

0.1

(0.5rdg + 0.6mV)

The value of current is ALWAYS displayed with a positive sign: the value of current transduced in a voltage lower than 5mV is zeroed.

FS DC clamp [A] 1< FS 10
10< FS 100 100< FS 1000

Resolution [A] 0.001 0.01 0.1

Minimum read value [A] 0.05 0.5 5

DC Power (Vmis > 150V) Clamp FS [A]

Range [W]

1< FS 10

0.000k 9.999k

Resolution [W] 0.001k

10< FS 100

0.00k 99.99k

0.01k

100< FS 1000

0.0k 999.9k

Vmis = voltage at which power is measured; Imis = measured current

0.1k

Accuracy
(1.5rdg + 3dgt) (Imis < 10%FS) (1.5rdg) (Imis 10%FS)

Irradiance (with HT304k reference cell)

Range [mV]

Resolution [mV]

1 40.0

0.02

Accuracy (1.0rdg + 0.1mV)

Temperature (with probe type PT300N)

Range [°C]

Resolution [°C]

-20.0 100.0

0.1

Accuracy (1.0rdg + 1°C)

EN – 59

PVCHECKs

10.2. TECHNICAL SPECIFICATIONS OF THE IVCK FUNCTION

DC Voltage @ OPC

Range [V]

Resolution [V]

Accuracy

5.0 199.9 200 999

0.1 0.5

(1.0rdg + 2dgt)

Minimum VPN voltage to start the test: 15V

DC Current @ OPC Range [A] 0.10 15.00

Resolution [A] 0.01

Accuracy (1.0rdg + 2dgt)

DC Voltage @ STC Range [V] 5.0 199.9
200 999

Resolution [V] 0.1
1

Accuracy (4.0rdg + 2dgt)

DC Current @ STC Range [A] 0.10 15.00

Resolution [A] 0.01

Accuracy (4.0rdg + 2dgt)

Irradiance (with HT304k reference cell)

Range [mV]

Resolution [mV]

1 40.0

0.02

Accuracy (1.0rdg + 0.1mV)

Temperature (with probe type PT300N)

Range [°C]

Resolution [°C]

-20.0 100.0

0.1

Accuracy (1.0rdg + 1°C)

10.3. TECHNICAL SPECIFICATIONS FOR ELECTRICAL SAFETY

Continuity of protective conductors (LOW)

Range []

Resolution []

Accuracy

0.00 1.99

0.01

2.0 19.9

0.1

(2.0rdg + 2dgt)

20 199

Test current >200mA DC up to 5 (cables included), resolution 1mA, accuracy (5.0%reading + 5digits) Open-circuit voltage 4 < V0 < 10V

Insulation resistance (M) Mode TIMER

Test voltage [V]

Range [M]

Resolution [M]

Accuracy

0.01 1.99

0.01

250, 500, 1000

2.0 19.9

0.1

(5.0rdg + 5dgt)

Open voltage Short circuit current Generated voltage
Rated current measured

20 199

<1.25 x nominal test voltage

< 15mA (peak) for each test voltage

resolution 1V, accuracy (5.0%reading + 5digits) @ Rmis> 0.5% FS

> 1mA with 1k @ Vnom

Insulation resistance (M) Mode FIELD (*), STRING (**)

Test voltage [V]

Range [M]

Resolution [M]

Accuracy (***)

250, 500, 1000
(*) For FIELD mode (**) For STRING mode Open voltage Short circuit current Generated voltage Rated current measured (***) For FIELD mode:

0.1 1.9

0.1

2 99

(20.0rdg + 5dgt)

if VPN >1V the minimum voltage VEP and VEN for the calculation of Ri(+) and Ri(-) is 1V

minimum VPN voltage to start the test: 15V

<1.25 x nominal test voltage

< 15mA (peak) for each test voltage

resolution 1V, accuracy (5.0%reading + 5digits) @ Rmis> 0.5% FS

> 1mA with 1k @ Vnom

add 5 dgts to the accuracy if [Max (R+,R-) / Min (R+,R-) 100]

EN – 60

PVCHECKs

10.4. REFERENCE STANDARDS

10.4.1. General

Instrument safety:

IEC/EN61010-1

EMC:

IEC/EN61326-1

Safety of measuring accessories:

IEC/EN61010-031

Measurements:

IEC/EN62446-1 (IVCK, LOW, M)

Insulation:

double insulation

Pollution level:

Measurement category:

CAT III 300V to earth

Max 1000V between inputs P, N, E, C

10.5. GENERAL CHARACTERISTICS

Display and memory

Type of display:

LCD custom, 128×128 pxl, with backlighting

Saved data:

max 999

PC interface:

optical / USB

Characteristics of radio module
Frequency range: R&TTE category: Max transmission power: Max RF connection distance:
PV system efficiency Integration Period: Memory of SOLAR-02:
Power supply Battery type: Low battery indication: Battery life: Automatic power off:
Mechanical characteristics Dimensions (L x W x H): Weight (batteries included): Mechanical protection:

2.400 2.4835GHz Class 1 30W 1m
5,10,30,60,120,300,600,900,1800,3600s approx. 1.5 hours (@ PI = 5s) approx. 8 days (@ PI = 600s)
6×1.5V alkaline type AA LR06 MN1500 the display shows symbol ” ” approx 120 hours (PV efficiency) after 5 minutes
235 x 165 x 75mm (9 x 6 x 3in) 1.2kg (2.5lv) IP40

10.6. ENVIRONMENTAL CONDITIONS FOR USE

Reference temperature:

23°C ± 5°C (73° ± 41°F)

Operating temperature:

0°C ÷ 40°C (32 ÷ 104°F)

Allowable relative humidity:

<80%RH

Storage temperature:

-10°C ÷ 60°C (14 ÷ 140°F)

Storage humidity:

<80%RH

Max operating altitude:

2000m

This instrument satisfies the requirements of Low Voltage Directive 2014/35/EU (LVD) and of EMC Directive 2014/30/EU
This instrument satisfies the requirements of 2011/65/EU (RoHS) directive and 2012/19/EU (WEEE) directive

10.7. ACCESSORIES See the attached packing list

EN – 61

PVCHECKs

11. APPENDIX THEORETICAL OUTLINE

11.1. EFFICIENCY TEST ON PV INSTALLATIONS According to the requirements of the laws in force, DC efficiency test on a PV installation
depends on the type of correction used to compensate the effects of the module’s
temperature and on the mathematical relationship used to calculate the nDC parameter (see § 5.2.3).

Corr.

Tcel value

Tmod

Tcel

Measured module value

temp.

Tcel = Calculated module temp. value
Tenv Tcel = Tamb + (NOCT – 20) Gp
800

Mathematical relationship for nDC calculation

Rfv2

–

(Tcel-

40)

100

(se Tcel 40C) (se Tcel 40C)

hence

nDC =

Pdc

Gp GSTC

Standard Result

Italian guideline
CEI 82-25

OK/NO

nDC

Tcel = Measured module temp. value

( ) nDC

GSTC Gp

100

Tcel

–

Pdc Pn

– – –

where:

Symbol

Description

G p Irradiance measured on PV module surface

Measurin g unit
W/m2

GSTC Standard Irradiance = 1000

W/m2

P n Pdc
Rfv 2
NOCT

Rated Power = sum of all Pmax values of the section of the PV plant being measured
DC power measured at the PV generator’s output
Correction factor depending on the Temperature of PV Cells (Tcel) measured or calculated according to the type of selected correction relationship Absolute value of the thermal coefficient of Pmax of the PV modules included in the plant section being measured. (Normal Operating Cell Temperature) = Temperature the cells under reference conditions are brought to (800W/m2, 20°C, AM=1.5, air speed =1m/s).

kW kW
%/C %/C

The previous relationships are valid if Irradiance > Min Irradiance (see the User Manual of the MASTER instrument) and the irradiance values are “steady”, i.e. for each sample taken, with IP 1min, the difference between the maximum and minimum irradiance values measured must be < 20W/m2

The final OUTCOME can be:

Non-displayable: if the obtained values are inconsistent (e.g. nDC >1.15) or if irradiation has never reached a steady value > minimum threshold set.
The maximum performance of the system

EN – 62

PVCHECKs
12. SERVICE
12.1. WARRANTY CONDITIONS This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be replaced. However, the manufacturer reserves the right to repair or replace the product. Should the instrument be returned to the After-sales Service or to a Dealer, transport will be at the Customer’s charge. However, shipment will be agreed in advance. A report will always be enclosed to a shipment, stating the reasons for the product’s return. Only use original packaging for shipment; any damage due to the use of non-original packaging material will be charged to the Customer. The manufacturer declines any responsibility for injury to people or damage to property.
The warranty shall not apply in the following cases:
· Repair and/or replacement of accessories and battery (not covered by warranty). · Repairs that may become necessary as a consequence of an incorrect use of the
instrument or due to its use together with non-compatible appliances. · Repairs that may become necessary as a consequence of improper packaging. · Repairs which may become necessary as a consequence of interventions performed
by unauthorized personnel. · Modifications to the instrument performed without the manufacturer’s explicit
authorization. · Use not provided for in the instrument’s specifications or in the instruction manual.
The content of this manual cannot be reproduced in any form without the manufacturer’s authorization.
Our products are patented and our trademarks are registered. The manufacturer reserves the right to make changes in the specifications and prices if this is due to improvements in technology
12.2. SERVICE If the instrument does not operate properly, before contacting the After-sales Service, please check the conditions of battery and cables and replace them, if necessary. Should the instrument still operate improperly, check that the product is operated according to the instructions given in this manual. Should the instrument be returned to the After-sales Service or to a Dealer, transport will be at the Customer’s charge. However, shipment will be agreed in advance. A report will always be enclosed to a shipment, stating the reasons for the product’s return. Only use original packaging for shipment; any damage due to the use of non-original packaging material will be charged to the Customer.
EN – 63

HT ITALIA SRL Via della Boaria, 40
48018 Faenza (RA) Italy
T +39 0546 621002 | F +39 0546 621144 M ht@ht-instruments.com | www.ht-instruments.it

WHERE WE ARE

HT INSTRUMENTS SL C/ Legalitat, 89
08024 Barcelona Spain
T +34 93 408 17 77 | F +34 93 408 36 30 M info@htinstruments.es | www.ht-instruments.com/es-es/

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D-41352 Korschenbroich Germany
T +49 (0) 2161 564 581 | F +49 (0) 2161 564 583 M info@ht-instruments.de | www.ht-instruments.de

Documents / Resources

HT Instruments PVCHECKs Electric Safety and Performance Of a Photovoltaic System [pdf] User Manual
PVCHECKs Electric Safety and Performance Of a Photovoltaic System, PVCHECKs, Electric Safety and Performance Of a Photovoltaic System, Performance Of a Photovoltaic System, Photovoltaic System, System

References

User Manual

HT Instruments PVCHECKs Electric Safety and Performance Of a Photovoltaic System

Specifications

Product Information

General Description

Documents / Resources

References

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