Sonel MPI-502F Meter For Electrical Tester User Manual

The MPI-502F / 506 / 507 is a modern, state-of-the-art measuring
instrument designed for electrical installations. It is easy to
operate and ensures safe measurements. Refer to this manual to
avoid errors during measurements and prevent operational
issues.

Product Usage Instructions

1. General Information

1.1 Safety Symbols:

Ensure to understand and follow all safety symbols indicated in
the manual.

1.2 Safety:

Adhere to all safety precautions outlined in the manual to
prevent accidents or injuries.

2. Quick Start

2.1 Switching On and Off, Display Backlight:

Follow the instructions to power on or off the device and
adjust the display backlight settings.

2.2 Selecting General Measurement Parameters:

Learn how to choose the desired measurement parameters for
accurate readings.

2.3 Remembering the Last Measurement Result:

Understand how the device stores and recalls the previous
measurement results for reference.

3. Measurements

3.1 AC Voltage Measurement:

Instructions for measuring AC voltage accurately.

3.2 Voltage and Frequency Measurement:

Guidelines for measuring voltage and frequency.

3.3 Checking the Correctness of PE Connections:

Steps to ensure the accuracy of Protective Earth
connections.

Frequently Asked Questions (FAQ)

Q: How can I calibrate the device?

A: Calibration instructions can be found in the user manual
under the calibration section. Follow the provided steps carefully
for accurate calibration.

Q: What should I do if the device displays an error code?

A: Refer to the troubleshooting section in the manual to
identify the error code displayed. Follow the recommended actions
to resolve the issue.

“`

View Fullscreen

41 1

4 2 2

USER MANUAL
METER FOR ELECTRICAL INSTALLATION PARAMETERS MPI-502F MPI-506 MPI-507
SONEL S.A. Wokulskiego 11 58-100 widnica
Poland Version 2.11 22.08.2025

The MPI-502F / 506 / 507 is a modern, state-of-the art measuring instrument, easy to operate and safe. Read this manual to avoid mistakes during the measurements and prevent operational problems.

MPI-502F MPI-506 MPI-507 USER MANUAL

CONTENTS

1 General information……………………………………………………………………………..5

1.1 Safety symbols …………………………………………………………………………………………… 5 1.2 Safety ……………………………………………………………………………………………………….. 6

2 Quick start …………………………………………………………………………………………..7

2.1 Switching on and off, display backlight…………………………………………………………… 7 2.2 Selecting general measurement parameters…………………………………………………… 7 2.3 Remembering the last measurement result…………………………………………………….. 7

3 Measurements……………………………………………………………………………………10

3.1 AC voltage measurement…………………………………………………………………………… 10

3.2 Voltage and frequency measurement ………………………………………………………….. 10

3.3 Checking the correctness of PE (protective earth) connections ……………………….. 11

3.4 Fault loop parameters ……………………………………………………………………………….. 12

3.4.1 Selecting the lead length……………………………………………………………………………………12

3.4.2 Prospective short-circuit current………………………………………………………………………….13

3.4.3 Fault loop parameters in the L-N and L-L circuits …………………………………………………..14

3.4.4 Fault loop parameters in the L-PE circuit………………………………………………………………17

3.4.5 Fault loop impedance in L-PE circuit protected with a residual current device (RCD) …..19

3.5

Resistance-to-earth (RE3P) ……………………………………………………………… 21

3.6 RCD parameters ………………………………………………………………………………………. 26

3.6.1 RCD tripping current …………………………………………………………………………………………26

3.6.2 RCD tripping time …………………………………………………………………………………………….29

3.6.3 Automatic measurements of RCD parameters ………………………………………………………32

3.6.3.1 FULL mode …………………………………………………………………………………………..32

3.6.3.2 STANDARD mode………………………………………………………………………………….36

3.7

Insulation resistance……………………………………………………………… 39

3.7.1 Measurement of individual objects ………………………………………………………………………39

3.7.2 Additional information ……………………………………………………………………………………….42

3.8 Low-voltage resistance measurement………………………………………………………….. 43 3.8.1 Test leads resistance compensation auto-zeroing……………………………………………….43

3.8.2 Low-current resistance measurement ………………………………………………………………….44

3.8.3 Measurement of resistance of protective conductors and equipotential bonding with ±200 mA current ………………………………………………………………………………………………46

3.9

Phase sequence…………………………………………………………………… 48

4 Memory of measurement results ………………………………………………………..50

4.1 Entering the measurement results to the memory………………………………………….. 50 4.2 Changing the cell and bank number…………………………………………………………….. 52 4.3 Browsing the memory………………………………………………………………………………… 52 4.4 Clearing the memory …………………………………………………………………………………. 54
4.4.1 Clearing the bank……………………………………………………………………………………………..54 4.4.2 Clearing the whole memory ……………………………………………………………………………….55 4.5 Communication with computer ……………………………………………………………………. 56 4.5.1 Package for cooperation with computer ……………………………………………………………….56 4.5.2 Data transmission with Bluetooth module……………………………………………………………..56

5 Troubleshooting…………………………………………………………………………………57

6 Power supply……………………………………………………………………………………..59
6.1 Monitoring the power supply voltage ……………………………………………………………. 59 6.2 Replacing the batteries………………………………………………………………………………. 59

MPI-502F MPI-506 MPI-507 USER MANUAL

6.3 General rules of using the Nickel Metal Hydride (Ni-MH) batteries……………………… 60 7 Cleaning and maintenance …………………………………………………………………60

8 Storage………………………………………………………………………………………………61

9 Dismantling and disposal …………………………………………………………………..61

10 Technical data ……………………………………………………………………………………62

10.1 Basic information………………………………………………………………………………………. 62

10.1.1 Voltage measurement……………………………………………………………………………………….62 10.1.2 Frequency measurement …………………………………………………………………………………..62

10.1.3 10.1.4 10.1.5
10.1.6 10.1.7

ZL-PE, ZL-N, ZL-L fault loop impedance measurement ………………………………………………..62
ZL-PE fault loop impedance measurement RCD (without tripping the RCD) …………………………63 ZL-PE fault loop impedance measurement RCD (without tripping the RCD) EV type RCD …..64
Measurement of earth resistance 3-pole method (RE3P)…………………………..66 Measurement of the RCD parameters………………………………………………………………….66

10.1.8

Measurement of insulation resistance ……………………………………………68

10.1.9 Low-voltage continuity and resistance measurement ……………………………………………..68

10.1.10

Phase sequence………………………………………………………………………..69

10.2 Other technical specifications……………………………………………………………………… 69

10.3 Additional information………………………………………………………………………………… 70

10.3.1 Additional uncertainty according to IEC 61557-3 (Z) ………………………………………………70 10.3.2 Additional uncertainty according to IEC 61557-4 (R ±200 mA) …………………………………70

10.3.3 Additional uncertainty according to IEC 61557-6 (RCD) ………………………………………….70

10.3.4

Influence of serial interference voltage on the resistance measurements for

function RE3P……………………………………………………………………………………………………70

10.3.5

Influence of the auxiliary electrodes on earth resistance measurements for function

RE3P ………………………………………………………………………………………………………………71

10.3.6

Additional uncertainties according to IEC 61557-5 (RE3P) ……………………………….71

11 Manufacturer ……………………………………………………………………………………..71

MPI-502F MPI-506 MPI-507 USER MANUAL

The icon with the meter name is placed next to sections of the text that refer to specific features of the device. All other parts of the text relate to all types of the instrument.
1 General information

1.1 Safety symbols

The following international symbols are used in the device and/or in this manual:

Warning; See explanation in
the manual
DC current/voltage
Do not dispose of with other house-
hold waste

Ground
Dual insulation (Protection class)
Recycling information

AC current/voltage
Declaration of Conformity with EU direc-
tives (Conformité Européenne)
Confirmed compliance with Australian Stand-
ards

Measurement categories according to IEC 61010-2-030: · CAT II concerns measurements performed in circuits directly connected to low voltage installations,
· CAT III concerns measurements performed in buildings installations, · CAT IV concerns measurements performed at the source of low voltage installation.

MPI-502F MPI-506 MPI-507 USER MANUAL

1.2 Safety

The meter is designed for testing the protection against electric shock in the mains systems. The meter is used to make measurements which results determine the electrical installation safety level. Consequently, in order to ensure safe operation and correct measurement results, observe the following recommendations:

· Before you proceed to operate the meter, acquaint yourself thoroughly with the present manual and observe the safety regulations and recommendations of the manufacturer.

· Any application that differs from those specified in the present manual may cause damage of the instrument and a serious hazard to its user.

· The meters must be operated solely by appropriately qualified personnel with relevant certificates to perform measurements of electric installation. Operation of the instrument by unauthorized personnel may result in damage to the device and constitute a hazard to the user.

· Using this manual does not exclude the need to comply with occupational health and safety regu-

lations and with other relevant fire regulations required during the performance of a particular type of work. Before starting the work with the device in special environments, e.g. potentially firerisk/explosive environment, it is necessary to consult it with the person responsible for health and safety.

· It is unacceptable to operate the following:

a damaged meter which is completely or partially out of order,

leads with damaged insulation,

a meter which ahs been stored to long in unsuitable conditions (for example is wet). When the

meter is transferred from cold environment to warm and humid one, do not make measure-

ments until the meter warms up to the ambient temperature (about 30 minutes).

· Remember that the

message on the display means that the power supply voltage is too low and

indicates the need to replace/ charge the batteries. The measurements performed with the meter with

insufficient supply voltage have additional measuring errors which are impossible to be evaluated by

the user and cannot be the basis to determine the correct protection of the tested installation.

· Do not leave the discharged batteries in the meter as they can leak and damage the instrument.

· Before starting the measurement, check if the leads are connected to correct measuring terminals.

· Never use the meters with open or only partially closed battery compartment cover and use only the power supplies specified in this manual.

· Repairs may be performed solely by an authorized service outlet.

NOTE!
Only accessories for a given device should be used. Using other accessories may cause damage to measuring terminals, introduce additional measurement error and create a risk for the user.
· An attempt to install drivers in 64-bit Windows 8 and Windows 10 may result in dis-
playing “Installation failed” message. o Cause: Windows 8 and Windows 10 by default blocks drivers without a digital signature. o Solution: Disable the driver signature enforcement in Windows.
· Due to continuous development of the meter’s software, the actual appearance of
the display, in case of some of the functions, may slightly differ from the display presented in this operating manual.

MPI-502F MPI-506 MPI-507 USER MANUAL

2 Quick start 2.1 Switching on and off, display backlight

To switch on the meter, briefly press the

button. To switch off, press the same button

longer (the message appears). To switch on/off the display and keypad backlight during the meter operation, briefly press the

button.

2.2 Selecting general measurement parameters

Keeping the SET/SEL button depressed, switch on the meter and wait for the parameter selection screen to appear.

Use the buttons to go to next parameter.

Use the buttons to change the parameter value. The value or symbol to be changed is flashing.

Set the parameters according to the algorithm.

Press and hold ENTER (until a signal sounds ca. 3 s) to save the changes and go to the measurement function or press ESC to go the
measurement function without saving the changes.

· At first start-up or after replacing batteries, select the type of power supply: re-
chargeable batteries (ACCU) or batteries (BATT). General measurement parameters can be selected in the same menu.

· Before the first measurements, set the mains rated voltage Un (220/380 V, 230/400 V or
240/415 V) which is applicable in the test location. The voltage is used to calculate the

prospective short-circuit current, if this option was chosen from the main menu.

· The symbol means the positive phase or polarization, the symbol a negative one.

· The

symbol in the time to auto-off settings, indicates disabling this function.

· The RCD Auto mode settings see section 3.6.3.

· PIN settings see Meter settings schematic.

· Software upgrade – see Meter settings schematic and section 4.5.

2.3 Remembering the last measurement result
The result of the last measurement is remembered until the next measurement is activated, the measurement parameters are changed or the measuring function is changed with the rotary switch. Use the ESC button to go to the starting screen of a given function and press ENTER to display the last measurement result.

MPI-502F MPI-506 MPI-507 USER MANUAL

220 V 230 V 240 V

Meter settings algorithm

50 Hz 60 Hz

LOOP DISP

Ik Z

MPI-502F MPI-506 MPI-507 USER MANUAL

U UN

Mains voltage
Mains frequency
Result of impedance measurement: shortcircuit current / impedance
Voltage for calculating Ik: rated / measured
RCD-AUTO parameters: enabled / disabled standard mode (STRD) / full mode (FULL) Auto-OFF disabled time to automatic shutdown
Bluetooth communication: disabled / memory readout / remote control

RCD Auto

OFF

– – 300 s 600 s 900 s

off

L-PE RCD

off mem rem

1/2 In

off

Change PIN Power supply selection: rechargeable batteries / batteries Beeper: enabled / disabled Identifying wires in the conductors during insulation resistance measurement: on / off Firmware update Factory reset: yes / no

PIN conf

SUPP

BEEP

RISO PAIR

UPDT

FACT SETT

3 s

ACCU

BATT

off

yes no
3 s

…

3 s

1/2 In

…

5 In

Auto

3 s

STRD

off

FULL

MPI-502F MPI-506 MPI-507 USER MANUAL

3 Measurements

WARNING

· During the measurements (fault loop impedance, RCD) never touch the earthed
and accessible parts in the tested electrical installation.
· During the measurement do not switch the rotary switch as this may cause dam-
age of the meter and hazard for the user.

Message

indicates, that:

· an incompatibile measurement adapter is connected to the meter,

· the measurement adapter cable is damaged.

3.1 AC voltage measurement
The meter measures and displays the mains alternating voltage in all measurement functions with the exception of R. The voltage is measured for the 45…65 Hz frequency range. The test leads should be connected as for a given measuring function.

3.2 Voltage and frequency measurement
Set the rotary switch to the U,f position.

Read the measurement result: frequency in the main display field, voltage in the auxiliary field.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.3 Checking the correctness of PE (protective earth) connections

Connect the meters as shown in the figure, touch the contact electrode with your finger and wait about 1 second. When the voltage on the PE conductor is detected, the instrument displays the message (error in the installation, the PE conductor is connected to the phase conductor) and generates a continuous audio signal. This option is available for all measurement functions related to the RCD’s and fault loop, except for ZL-N,L-L.
WARNING
When dangerous voltage on the protective conductor PE is detected, discontinue the measurements immediately and repair the electrical installation.
· Make sure that during the measurements you are not standing on an uninsulated
floor as this may cause erroneous results.
· The threshold value, which triggers the signal of exceeded allowable voltage on PE
conduit, is approximately 50 V.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.4 Fault loop parameters
NOTE!
· If the tested mains includes residual current devices, for the duration of measure-
ment they should be omitted by bypassing. Remember however that bypassing changes the tested circuit and the results may very slightly differ from the actual values.
· After the measurement, restore the mains to its original state and check operation of
the residual current device. This note does not apply to the earth loop impedance measurements with the ZL-PE RCD function.
· Measurements of fault loop impedance performed downstream of inverters are inef-
fective and their results are unreliable. This is due to the instability of internal impedance in inverter circuits during its operation. The measurements of fault loop impedance should not be performed directly downstream of inverters.

3.4.1 Selecting the lead length

· Switch on the meter.
· Set the rotary switch to one of the fault loop im-
pedance measurement types.

SET L
1.2 m 5m 10 m
20 m

Set the parameters according to the following algorithm and the rules for setting the general parameters.

· Using original leads and selecting correct length is a guarantee of keeping the de-
clared measuring accuracy.
· The WS leads are detected by the meter and you cannot select their length (the
symbol is displayed). When you are using the leads with banana plugs, before you start the measurements set the correct phase conductor length complying with the test leads length.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.4.2 Prospective short-circuit current

The meter always measures the impedance, and the displayed short-circuit current is calculated

according to the following formula:

I k

n
Z

where:

Un rated voltage of the tested mains, ZS measured impedance.

Based on the rated voltage Un selected in the general settings (section 2.2), the meter automatically detects the measurement with phase-to-neutral or phase-to-phase voltage and includes this in the calculations.
If the tested mains voltage is out of tolerance range, the meter will not be able to determine the correct rated voltage for calculation of short-circuit current. In such case, horizontal lines will be displayed instead of the short-circuit current. The figure below shows the voltage ranges for which the short-circuit current is calculated.

Voltage range for which the impedance is measured

Un=220V Un=230V Un=240V

198 220 242 207 230 253 216 240 264

342 380 418 440 U [V] 360 400 440 U [V] 373 415 440 U [V]

UL-N voltage ranges for which the short-circuit current is calculated

UL-L voltage ranges for which the short-circuit current is calculated

MPI-502F MPI-506 MPI-507 USER MANUAL

3.4.3 Fault loop parameters in the L-N and L-L circuits
· Switch on the meter. · Set the rotary switch to the ZL-L ZL-N position. · Select the leads length as described in
sec. 3.4.1 according to the needs.
Connect the test leads as shown in the figure: for measurement in the L-N circuit,
measurement in the L-L circuit

The meter is ready for measurement. Phase conductor length or the symbol. UL-N or UL-L voltage

Press START to perform the measurement.

MPI-502F MPI-506 MPI-507 USER MANUAL

Read the main result: the fault loop impedance ZS and the mains voltage during the measurement.
Press to display additional results. Short-circuit current IK
Fault loop resistance R
Fault loop reactance XL

MPI-502F MPI-506 MPI-507 USER MANUAL

· Save the result in the memory (see sections 4.1, 4.2) or press ESC to return to the

voltage measurement.

· Making a large number of tests over a short time causes the meter to emit a lot of

heat. As a result the casing may become warm. This is normal. The meter has an

overheat protection.

· The minimum time between successive measurements is 5 seconds. This value is

controlled by the meter which displays the

message when you can make

the next measurement.

Additional information displayed by the meter
Meter ready for measurement
Voltage on the meter L and N terminals is out of range for which the measurement can be made. Voltage on the meter L and PE terminals is out of range for which the measurement can be made.
Measurement error
Incorrect or unstable power grid frequency.
Measurement error loss of voltage after the measurement.
Short-circuit loop of the meter is faulty.
N conductor not connected.
Message (displayed after the measurement) indicates significant disturbances in the mains during measurement. The measurement result may include a large, unspecified error. Temperature inside the meter has exceeded the allowed limit. The measurement is blocked. The L and N conductors are switched (voltage between the PE and N conductors).

MPI-502F MPI-506 MPI-507 USER MANUAL

3.4.4

Fault loop parameters in the L-PE circuit
· Switch on the meter. · Set the rotary switch to the ZL-PE position. · Select the leads length as described in
sec. 3.4.1 according to the needs.

Connect the test leads as shown in one of the figures.

Measurement in L-PE circuit

Checking effectiveness of protection against electric shock of the meter housing in case of: TN network or TT network

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement. Phase conductor length or the symbol.
UL-PE voltage

Press START to perform the measurement.
The remaining measurement issues are analogous to the ones described for the measurements in the L-N or L-L systems.
A double-lead measurement is possible when selecting the test lead other than with the socket adapter.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.4.5 Fault loop impedance in L-PE circuit protected with a residual current device (RCD)
The meter allows the fault loop impedance measurements without making changes in the mains with RCDs with rated current of minimum 30 mA and with EV RCDs with rated current of minimum 6 mA.
· Switch on the meter. · Set the rotary switch to the ZL-PE RCD position.

Set the parameters according to the following algorithm and the rules for setting the general parameters.

SET L
1.2 m 5m 10 m
20 m

SET E (the presence of an EV type RCD in the system)

on (RCD of EV type)

off (no RCD or RCD of a type other

than EV)

Connect the test leads as shown in one of the figures.

Measurement in a TN-S system

Measurement in a TT system

MPI-502F MPI-506 MPI-507 USER MANUAL

Measurement in a TN-C-S system
The remaining measurement issues are analogous to the ones described for the measurements in the L-N or L-L systems.

· You can discontinue the measurement by pressing the ESC button. · In a mains without interferences, the measurement takes ca. 8 seconds. If interfer-
ences occur, this time may be longer.
· In the electrical installations with the 30 mA residual current devices the sum of the
installation leakage currents and the test current may trip the RCD. In such case, try to reduce the leakage current of the tested installation (i.e. by disconnecting the loads).

Additional information displayed by the meter
Meter ready for measurement Voltage on the meter L and N terminals is out of range for which the measurement can be made. Voltage on the meter L and PE terminals is out of range for which the measurement can be made.
Measurement error
Incorrect or unstable power grid frequency.
Measurement error loss of voltage after the measurement.
Short-circuit loop of the meter is faulty.
N conductor not connected.
Message (displayed after the measurement) indicates significant disturbances in the mains during measurement. The measurement result may include a large, unspecified error. Temperature inside the meter has exceeded the allowed limit. The measurement is blocked. The L and N conductors are switched (voltage between the PE and N conductors).

MPI-502F MPI-506 MPI-507 USER MANUAL

3.5

Resistance-to-earth (RE3P)

The three-pole measuring method is the basic type of resistance-to-earth measurement.

Disconnect the tested earth electrode from the installation of the facility.

Un
25 V 50 V

· Switch on the meter. · Set the rotary switch to the RE position.
Set the measuring voltage according to the following algorithm and the rules for setting the general parameters.

MPI-502F MPI-506 MPI-507 USER MANUAL

Connect the test leads as shown in one of the figures.

· Drive the current electrode H into the earth and connect to the H socket of the meter. · Drive the voltage electrode S into the earth and connect to the S socket of the meter. · The earth electrode being tested should be connected to E socket of the meter. · It is recommended that the tested earth electrode as well as H and S electrodes should be
located along one line and at relevant distances, in accordance with the rules of earth measurements.
The meter is ready for measurement.
Interference voltage currently on the object
Press START to perform the measurement.
Read the result. UN interference voltage RE resistance-to-earth

MPI-502F MPI-506 MPI-507 USER MANUAL

Press to display additional results.

Un measuring voltage ER additional uncertainty caused by resistance of the electrodes

UN interference voltage RH resistance of current electrode

UN interference voltage RS resistance of voltage electrode

Repeat the steps

for two additional

locations of the voltage electrode S:

· at a certain distance from the tested earth

electrode,

· moved closer by the same distance to the

tested earth electrode.

This is done to confirm that the S electrode was driven into the reference earth. If so, the difference between the value of RE between the main measurement and each additional measurement should not exceed 3%.

If RE measurement results differ from one another by more than 3%, the distance of the current electrode from the earth electrode being tested should be considerably increased and the measurements should be repeated.

MPI-502F MPI-506 MPI-507 USER MANUAL

WARNING
· Measurement of resistance-to-earth may be carried out if voltage of interfer-
ences does not exceed 24 V. Voltage of interferences is measured up to the level of 100 V.
· Over 50 V it is signalled as hazardous. The meter must not be connected to
voltages exceeding 100 V.
· It is recommended that the test earth electrode as well as H and S electrodes
should be located in one line. Due to the different field conditions it is not always possible. On the website www.sonel.com and in professional literature special cases of probes location have been discussed.
· Particular attention should be paid to quality of connection between the object being
tested and the test lead the contact area must be free from paint, rust, etc.
· If resistance of test probes is too high, RE earth electrode measurement will in-
clude an additional uncertainty. Particularly high uncertainty of measurement occurs when the tested resistance is small, and the probes have a weak contact with earth (such a situation occurs frequently when the earth electrode is well made but the upper soil layer is dry and slightly conductive). Then, the ratio of resistance of the probes to resistance of the tested earth electrode is very high and consequently, uncertainty of measurement that depends on this ratio is also very high.
· To reduce the uncertainty of the , measurement, the contact of the probe with earth
may be improved, for example, by: o moistening the spot where the probe is driven with water, o driving the probe in a different location o applying an 80 cm probe. Also, test the test leads for: o whether their insulation is not defective o whether the lead banana plug probe contact areas are not corroded or loos-
ened. In majority of cases the achieved measurement accuracy is satisfactory. However, you should always take account of the uncertainty included in the measurement.

MPI-502F MPI-506 MPI-507 USER MANUAL

Additional information displayed by the meter

RE>1999

The meter is ready for measurement. The tested facility is live. The measurement is blocked. Immediately disconnect the meter from the object (both test leads).
Interruption in the current probe circuit.
Interruption in the voltage probe circuit.
Interruption in measuring circuit or resistance of test probes is higher than 2 k.
Measuring range is exceeded.
Signal / noise ratio is too low (interfering signal too large). Error due to the resistance of electrodes > 30 % (for calculating uncertainty, measured values are taken into account).

MPI-502F MPI-506 MPI-507 USER MANUAL

3.6 RCD parameters
3.6.1 RCD tripping current

· Switch on the meter. · Set the rotary switch to the IA position.

Set the parameters according to the following algorithm and the rules for setting the general parameters.

Current waveform

10 mA

15 mA

30 mA

100 mA

300 mA

500 mA

RCD type

general purpose short-time delay selective

12.5 V (for )
25 V 50 V

Measurement mode

UB, IA, RE UB, RE tAi, UB, IA, RE

Connect the test leads as shown in the figure.

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement. UL-PE voltage
Press START to perform the measurement. Read the main measurement result: IA current.

Press to read additional results.

Tripping time tAI at the IA current

Protective conductor resistance for RCD – RE

MPI-502F MPI-506 MPI-507 USER MANUAL

Touch voltage UB

· If only the measurement of UB, RE is selected, these values are measured with the
0.4 In current without tripping the RCD. If the RCD trips during the measurement, press ESC to go to the next measurements.
· Due to the specific character of the measurement (step increase of the IA current),
the measurement result for the tripping time tAi in this mode may include a positive error or the message may be displayed due to the RCD inertia. If the result is outside the allowed range for a given RCD, repeat the measurement in the tA mode (see section 3.6.2).
· Save the result in the memory (see section 4.1) or press the ESC button to display
the voltage only. The last measurement result is remembered until you press the START button or change the rotary switch position.
Additional information displayed by the meter
Meter ready for measurement
Voltage on the meter L and PE terminals is out of range for which the measurement can be made. The L and N conductors are switched (voltage between the PE and N conductors).
Temperature inside the meter has exceeded the allowed limit. The measurement is blocked.
RCD did not trip or tripped too late.
After the UB RE measurement, the tA measurement was not performed because the RE and voltage values did not allow generating the required current value.
Incorrect or unstable power grid frequency.
Measurement error loss of voltage after the measurement or RCD tripped during the UB or RE measurement.
Safe touch voltage is exceeded.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.6.2 RCD tripping time

· Switch on the meter. · Set the rotary switch to the tA position with the
selected In multiplication factor.

Set the parameters according to the following algorithm and the rules for setting the general parameters.

In wCauvrerfeonrmt
10 mA 15 mA
30 mA 100 mA 300 mA 500 mA

RCD type

general purpose short-time delay selective

12.5 V (for
25 V 50 V

Meamsuordeement

In x n (for tA, UB, RE mode)

) tA, UB, RE

1/2

UB, RE

In In x n, the multipliers 2 and 5 do not apply to In = 300 mA and 500 mA. Connect the test leads as shown in the figure.

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement. UL-PE voltage Press START to perform the measurement. Read the main measurement result: tripping time tA.

Press to read additional results. Protective conductor resistance for RCD – RE

Touch voltage UB

MPI-502F MPI-506 MPI-507 USER MANUAL

· If only the measurement of UB, RE is selected, these values are measured with the
0.4 In current without tripping the RCD. If the RCD trips during the measurement, press ESC to go to the next measurements.
· Due to the specific character of the measurement (step increase of the IA current),
the measurement result for the tripping time tAi in this mode may include a positive error or the message may be displayed due to the RCD inertia. If the result is outside the allowed range for a given RCD, repeat the measurement in the tA mode (see section 3.6.2).
· Save the result in the memory (see section 4.1) or press the ESC button to display
the voltage only. The last measurement result is remembered until you press the START button or change the rotary switch position.
Additional information displayed by the meter
Meter ready for measurement
Voltage on the meter L and PE terminals is out of range for which the measurement can be made. The L and N conductors are switched (voltage between the PE and N conductors). Temperature inside the meter has exceeded the allowed limit. The measurement is blocked.
RCD did not trip or tripped too late.
After the UB RE measurement, the tA measurement was not performed because the RE and voltage values did not allow generating the required current value.
Incorrect or unstable power grid frequency.
Measurement error loss of voltage after the measurement or RCD tripped during the UB or RE measurement.
Safe touch voltage is exceeded.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.6.3 Automatic measurements of RCD parameters
The instrument can perform automatic measurement of the RCD tripping time tA, tripping current IA, touch voltage UB and earth resistance RE. In this mode, you do not need to activate the measurement each time, and your role is only to initiate the measurement and reset the RCD after each tripping. You can choose two main AUTO modes:
· FULL mode, · STANDARD mode.
Mode selection is described in section 2.2.

3.6.3.1 FULL mode

· Switch on the meter. · Set the rotary switch to the AUTO position.

If the displayed parameters are different than shown below, set them according to the following algorithm and the rules for setting the general parameters.

In RCD type RCD type

10 mA

15 mA

30 mA

100 mA

300 mA

500 mA

general purpose selective short-time delay

12.5 V (for )
25 V 50 V

Connect the test leads as shown in the figure.

· The length of the test
leads is taken from the settings in the fault loop impedance measurement (sec. 3.4.1).
· If the RCD measure-
ment uses test leads of a different length than in the Z measurement, either replace the test leads with those used for the Z measurement, or enter the Z measurement and set the length used.

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement. UL-PE voltage
Press START to perform the measurement. Switch on the tested RCD after each tripping.
Read the main measurement result: – good, – bad.
Use the ENTER button to save the results in the memory, arrows to view the result components. or the ESC button to go to the voltage display mode.

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter can perform the following measurements:

For RCD AC:

Measured parameters
ZL-PE UB, RE tA tA tA tA tA tA tA tA IA IA

Measurement conditions

Multiplication

Initial phase

factor In

(polarization)

ZL-PE

UB, RE

0.5 In

1 In

2 In

5 In

Measured parameters
ZL-PE UB, RE tA tA tA tA tA tA tA tA IA IA tA tA tA tA tA tA tA tA IA IA

For RCD A:

Measurement conditions

Multiplication

Initial phase

factor In

(polarization)

0.5 In 0.5 In 1 In 1 In 2 In 2 In 5 In 5 In
0.5 In 0.5 In 1 In 1 In 2 In 2 In 5 In 5 In

positive negative positive negative positive negative positive negative positive negative positive negative positive negative positive negative positive negative positive negative

Notes –
RCD in good working order should trip
Notes –
RCD in good working order should trip

MPI-502F MPI-506 MPI-507 USER MANUAL

· Number of measured parameters depends on settings in the main menu. · UB and RE are measured always. · If during the UB/RE measurement, the RCD has tripped at 0.5 In, or has not tripped
in the remaining cases, or the preset safe voltage value UL has been exceeded the measurement is discontinued.
· The measurements which are not possible are automatically skipped, for example
when the selected current In and multiplication factor are beyond the meter’s measuring capabilities.
Additional information displayed by the meter
Defective RCD.
RCD in good working order.
Switch on the RCD.
Meter ready for measurement
Voltage on the meter L and PE terminals is out of range for which the measurement can be made. The L and N conductors are switched (voltage between the PE and N conductors). Temperature inside the meter has exceeded the allowed limit. The measurement is blocked.
RCD did not trip or tripped too late. After the UB RE measurement, the tA measurement was not performed because the RE and voltage values did not allow generating the required current value. Incorrect or unstable power grid frequency.
Measurement error loss of voltage after the measurement or RCD tripped during the UB or RE measurement.
Safe touch voltage is exceeded.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.6.3.2 STANDARD mode

· Switch on the meter. · Set the rotary switch to the AUTO position.

If the displayed parameters are different than shown below, set them according to the following algorithm and the rules for setting the general parameters.

Current waveform

RCD type

10 mA 15 mA
30 mA 100 mA

general purpose selective short-time delay

12.5 V (for )
25 V 50 V

300 mA

500 mA

Connect the test leads as shown in the figure.

· The length of the test leads is taken from the settings in the fault loop impedance meas-
urement (sec. 3.4.1).
· If the RCD measurement uses test leads of a different length than in the Z meas-
urement, either replace the test leads with those used for the Z measurement, or enter the Z measurement and set the length used.

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement.
UL-PE voltage Press START to perform the measurement. Reset the tested RCD after each tripping.

Read the main measurement result: – good, – bad.

· Measured parameters are the same as in the table for the FULL and RCD AC mode
only for selected current waveform.
· Number of measured parameters depends on settings in the main menu.
· UB and RE are measured always.
· If during the UB/RE measurement, the RCD has tripped at 50% In, or has not tripped
in the remaining cases, or the preset safe voltage value UL has been exceeded the measurement is discontinued.
· The measurements which are not possible are automatically skipped, for example
when the selected current In and multiplication factor are beyond the meter’s measuring capabilities.

MPI-502F MPI-506 MPI-507 USER MANUAL

Additional information displayed by the meter
Defective RCD.
RCD in good working order.
Switch on the RCD.
Meter ready for measurement
Voltage on the meter L and N terminals is out of range for which the measurement can be made. The L and N conductors are switched (voltage between the PE and N conductors). Temperature inside the meter has exceeded the allowed limit. The measurement is blocked.
RCD did not trip or tripped too late. After the UB RE measurement, the tA measurement was not performed because the RE and voltage values did not allow generating the required current value. Incorrect or unstable power grid frequency.
Measurement error loss of voltage after the measurement or RCD tripped during the UB or RE measurement.
Safe touch voltage is exceeded.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.7

Insulation resistance

WARNING

The object tested must not be live.

3.7.1 Measurement of individual objects
· Turn on the meter. · Turn the rotary switch to RISO position.

If the function for identifying wires in the conductors is turned on (RISO PAIR – sec. 2.2), but the WS adapter is not connected, select the required markings. The active element flashes. marking selection wire selection

Designations
L1, L2, L3 phase conductors n neutral conductor N PE protective conductor PE Pn protective-neutral conductor PEN – – – E connected WS adapter (not selectable)

Measurement time

100 V

0’03”

250 V

…

500 V

3’00”

Set the measurement voltage according to the following algorithm, and according to the rules described in general parameters setting.

Connect test leads according to the drawing. The RISO+ lead can be connected to the blue or red socket.

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement.

5 s
+

Voltage present on tested object.
Press and hold the START button for 5 seconds. Apart from starting the measurement, this will cause 5-second countdown, after which the measurement will be locked. Testing will be continued until it reaches the preset time or until START button is pressed.
Quick start, without 5-second delay of the measurement lock, perform by pressing ENTER and holding the START button pressed. The measurement is stopped after reaching the preset time or by pressing START.
Read out the result.
Un measuring voltage

Press to read additional results. I measuring current

MPI-502F MPI-506 MPI-507 USER MANUAL

WARNING
· During measurements of insulation resistance, dangerous voltage up to 600 V
occurs at the ends of test leads.
· It is forbidden to disconnect test leads and to change the position of the func-
tion switch before completion of measurement. Failure to obey the above instruction will lead to high voltage electric shock and make it impossible to discharge the tested object.
· The meter emits a continuous audio signal until test voltage reaches 90% of the pre-
set value (and also when 110% of the preset value is exceeded).
· During measurement, the meter generates a beep every 5 seconds – it facilitates
capturing time parameters.
· When the measurement cycle is upheld by pressing ENTER it is indicated by:
o a short break in the beep, when the test voltage has not reached 90% or exceeded 110% of set value,
o a short beep if the test voltage is between 90% and 110% of set value.
· Bargraph shows the approximate value of the resistance. · After completion of measurement, the capacitance of the tested object is discharged
by shorting RISO+ and RISO- terminals with resistance of 100 k.
· Save the result in the memory (see section 4.1) or press the ESC button to display
the voltage only. The last measurement result is remembered until you press the START button or change the rotary switch position.
Additional information displayed by the meter
Test voltage is present on terminals of the meter.
The tested object is live. The measurement is blocked. Immediately disconnect the meter from the tested object (both leads)! Activation of current limit. The symbol displayed is accompanied by a continuous beep. The tested object is live. The measurement is possible, but without guaranteed accuracy. The insulation resistance is too low, the measurement is terminated. This symbol appears when during the measurement the insulation breakdowns.
Measuring range is exceeded.
The tested object is being discharged.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.7.2 Additional information
The meter measures the insulation resistance by applying to tested resistance RX tested voltage UISO and measuring current I flowing through it, which is controlled from RISO+ terminal side. In calculating the value of insulation resistance, the meter applies the technical method of resistance measurement (RX=U/I). The test voltage is chosen from values: 100 V, 250 V, 500 V.
Inverter output current is limited at 1 mA level. The measurement result is correct, but on the test terminals the test voltage is lower than voltage selected before the measurement (as illustrated in figure below). Quite often current limitation may occur in the first phase of the measurement due to charging the capacity of the tested object.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.8 Low-voltage resistance measurement
NOTE! Do not connect to the meter voltage above 440 V DC as this can damage the instrument.
3.8.1 Test leads resistance compensation auto-zeroing · Switch on the meter. · Set the rotary switch to the RCONT Rx position.
Set auto-zeroing according to the following algorithm. R RCONT AUTO-ZERO
Close the test leads.

Press START to commence the auto-zeroing.

MPI-502F MPI-506 MPI-507 USER MANUAL

When auto-zeroing is completed, the meter auto-
matically goes to the “ready for measurement” screen.

· The

message is still displayed after switching to one of the measurement

functions (resistance or continuity measurement) in order to indicate that the meas-

urement is being made with compensated test leads resistance.

· To remove compensation, perform the activities described above but with open test

leads. The

message will not be displayed in the measurement screen.

Additional information displayed by the meter
Tested facility is live. The measurement is blocked. Immediately disconnect the meter from the facility (both leads).

3.8.2 Low-current resistance measurement
· Switch on the meter. · Set the rotary switch to the RCONT Rx position.

If necessary, set the RX measurement according to the following algorithm. RCONT AUTO-ZERO R

MPI-502F MPI-506 MPI-507 USER MANUAL

The meter is ready for measurement. Connect the test leads as shown in the figure.

Read the measurement result.

Additional information displayed by the meter
Tested facility is live. The measurement is blocked. Immediately disconnect the meter from the facility (both leads). Message (displayed after the measurement) indicates significant disturbances in the mains during measurement. The measurement result may include a large, unspecified error.
Measurement range is exceeded.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.8.3

Measurement of resistance of protective conductors and equipotential bonding with ±200 mA current
· Switch on the meter. · Set the rotary switch to the RCONT Rx.

If necessary, set the RCONT measurement according to the following algorithm. RCONT AUTO-ZERO R The meter is ready for measurement.

Connect the test leads as shown in the figure. The measurement starts automatically for resistance values below 100 .

Read the measurement result.
The result is the arithmetic mean of the values of two measurements at a current of 200 mA with opposite polarities RCONT- and RCONT+.
R = RCONT- + RCONT+ 2

MPI-502F MPI-506 MPI-507 USER MANUAL

Press to read additional results.

RCONT- resistance measured with 200 mA negative polarity current

RCONT+ resistance measured with 200 mA positive polarity current
Press START to start the next measurement without disconnecting the test leads or to measure the resistance above >100 .
Additional information displayed by the meter
Tested facility is live. The measurement is blocked. Immediately disconnect the meter from the facility (both leads). Message displayed after the measurement, it indicates significant divergences between the partial measurements (point ). The measurement result may include a large, unspecified error. Possible causes:
· too much disturbances in the measured object, · instability of the object or of the meter’s connection with
the object (unreliable galvanic connection). Measurement range is exceeded.

MPI-502F MPI-506 MPI-507 USER MANUAL

3.9

Phase sequence

· Turn on the meter.

· Turn the rotary switch to position

Blinking digits indicate no or low voltage of the phases.

Connect test leads according to the drawing.

A set of lines displayed on the bargraph indicates the phase sequence:
· directed to the right – correct, · directed to the left – opposite.

MPI-502F MPI-506 MPI-507 USER MANUAL

Individual phase-to-phase voltages may be read using buttons.
By pressing the buttons you can return to the display of the phase sequence.

MPI-502F MPI-506 MPI-507 USER MANUAL

4 Memory of measurement results
The meter has the memory for 10 000 individual measurement results. The whole memory is divided into 10 banks with 99 cells each. Due to dynamic memory allocation, each cell can contain a different number of individual results, depending on the needs. This ensures optimum memory use. Each result can be saved in a cell of a specified number and in a chosen bank, thus allowing the user to assign the cell numbers to measurement points, and the bank numbers to tested facilities, make the measurement in any sequence and repeat the measurements without losing other data.
The memory of measurement results is not cleared when the meter is switched off. The data can be read later or transmitted to a computer. The number of the current cell and bank is not changed, either.
· One cell can contain the results of measurements made for all measurement func-
tions.
· After each entry of measurement result to a cell, the cell number is automatically in-
creased. To enter the successive results relating to a given measurement point (facility) to one cell, set the correct cell number before each entry.
· Only the results of measurements activated with the START button can be entered
to the memory (with exception of auto-zeroing in the low-voltage resistance measurement).
· It is recommended to clear the memory after reading the data or before a new series
of measurements, results of which can be saved in the same cells as previous ones.
4.1 Entering the measurement results to the memory
After the measurement, press ENTER.
The meter is in the memory enter mode. Select the bank and cell number acc. To section 4.2 or leave the current ones.
Cell is empty.
Cell includes the same type of result that is to be entered.
Cell is occupied by the displayed type of measurement results.
Cell is occupied by the displayed types of measurement results.

MPI-502F MPI-506 MPI-507 USER MANUAL

Confirm by pressing ENTER.
An attempt to overwrite the results triggers the warning message.
Press ENTER to overwrite the result or ESC to abort. The screen shown left appears for a moment accompanied by three short audio signals. Then, the meter again displays the last measurement result.
· In case of RCD’s, this warning will be displayed also when an attempt is made to en-
ter a given result type (component) of the measurement made at a different set In current or for a different set RCD type (ordinary/ selective) than the results saved in this cell. Entering the results for a different In current or other RCD type will cause deletion of all previously saved results for a given RCD.
· The saved data include a complete set of results (main and additional) for a given
measurement function plus the set measurement parameters.

MPI-502F MPI-506 MPI-507 USER MANUAL

4.2 Changing the cell and bank number
After the measurement, press ENTER. The meter is in the memory enter mode.
The cell number is flashing. Use the arrows to change the cell number.
Use the SET/SEL button to set the active (flashing) cell or bank number.
The bank number is flashing. Use the arrows to change the bank number.

4.3 Browsing the memory

· Switch on the meter. · Set the rotary switch to the MEM position.

The content of last saved cell is displayed.
The cell number is flashing.
The bank and cell number which you wish to browse is changed with the SET/SEL button and then with the arrows. If the cell/ bank number is flashing, it can be changed.

MPI-502F MPI-506 MPI-507 USER MANUAL

The sequence of saving the individual measurement results is given in the table below:

Measurement function (result group)
ZL-N, L-L ZL-PE or ZL-PE RCD RE
RCD
RISO RCONT

Component results

ZL-N or ZL-L and
UL-N or UL-L IK
R

XL ZL-PE and UL-PE
IK R

RE and Un RH RS

UB RE

tA at 0.5 In,

tA at 1 In,

tA at 2 In,

tA at 5 In,

tAi

(absence for RCD AUTO)

tAi

(absence for RCD AUTO)

as above (12 rows) for pulsating current

and

RISO and UN RISO and I
RCONT RCONTRCONT+

MPI-502F MPI-506 MPI-507 USER MANUAL

4.4 Clearing the memory
4.4.1 Clearing the bank

· Switch on the meter. · Set the rotary switch to the MEM position.

Set the number of bank to be cleared as described in sec. 4.2.
Set the cell number to (before 1). The message appears, signaling that the meter is ready to delete.

Press ENTER. The

and symbols

appear, requiring confirmation.

Press ENTER to start deleting or ESC to abort.
The deletion progress is shown on the screen as scrolling cell numbers. When deletion is completed, the meter generates three short audio signals and sets the cell number to 1.

MPI-502F MPI-506 MPI-507 USER MANUAL

4.4.2 Clearing the whole memory · Switch on the meter. · Set the rotary switch to the MEM position.
Set the bank number to (before 0). The message appears, signaling that the meter is ready to delete.

Press ENTER. The

and

symbols appear, requiring confir-

mation.

Press ENTER to start deleting or ESC to abort.
The deletion progress is shown on the screen as scrolling bank and cell numbers. When deletion is completed, the meter generates three short audio signals and sets the cell number to 1.

MPI-502F MPI-506 MPI-507 USER MANUAL

4.5 Communication with computer
4.5.1 Package for cooperation with computer
In order to ensure the communication of the meter with a computer, additional Bluetooth module and software is required. A program that may be used for this purpose is Sonel Reader. It allows users to read and display the measurement data stored in the meter memory. This program may be downloaded free from the manufacturer’s website. Information on the availability of other programs cooperating with the meter may be obtained from the manufacturer or its authorized distributors.
The software may be used for many devices manufactured by SONEL S.A. which are equipped with the USB interface and/or wireless module.
Detailed information regarding software is available from the manufacturer or an authorized distributor.
4.5.2 Data transmission with Bluetooth module

Keeping the SET/SEL button depressed, switch on the meter and wait for the parameter selection screen to appear (see sec. 2.2).

Using buttons go to parameter bt.

Using buttons select on.
Press and hold ENTER to save the changes. From now on the symbol will be visible on the screen.
Connect Bluetooth module to the USB socket of the PC, unless it is integrated into the PC. During the process of pairing the meter with a PC enter PIN code compatible with the PIN code of the meter defined in main settings. On the computer start Sonel Reader.

· Standard pin for Bluetooth is 1234. Settings in the meter according to section 2.2. · During communication and data transfer, the symbol blinks.

MPI-502F MPI-506 MPI-507 USER MANUAL

5 Troubleshooting

Before sending the instrument for repairs, call our service. Perhaps the meter is not damaged, and the problem has been caused by some other reasons.
The meter can be repaired only at outlets authorized by the manufacturer. Troubleshooting of typical problems during the use of the meter is described in the table below.

Measurement function

Symptom

Cause

Action

The meter will not switch off

with the button.

Check if the batteries are placed cor-

The

symbol appears Discharged or incorrectly rectly; replace / charge the batteries.

during voltage measurement. placed batteries.

If this has not helped, send the me-

ter for repair.

All

The meter switches off during

preliminary test.

Measurement errors after the

meter from

has cold

been transferred environment to

No acclimatization.

warm and humid one.

Do not make measurement until the meter reaches the ambient temperature (about 30 minutes) and dries.

Fault loop and RCD

Successive results in the same measurement point are significantly different.

Incorrect connections in the tested installation.
Mains with a lot of disturb-

Check and remove the defects. Make more measurements, average

ance or unstable voltage. the results.

Fault loop

The meter indicates the values close to zero or zero irrespective of the measurement Incorrectly chosen test leads location, and displayed values in the meter settings. are significantly different than expected.

MPI-502F MPI-506 MPI-507 USER MANUAL

Measurement function

Symptom

Cause

Action

During the touch voltage or In set too high.

Set correct In.

earth ment,

resistance measurethe RCD trips (RCD

Relatively high leakage rents in the installation.

cur-

Reduce the leakage currents.

trips at only 40% of the In

set).

Defects in the installation.

Verify the correctness of N and PE connections.

In set too low.

Set correct In.

Incorrectly set current waveform.

Set correct current waveform.

The RCD does not trip during

the tripping test.

Damaged RCD.

test the RCD with the TEST button; replace if necessary.

Defects in the installation.

Verify the correctness of N and PE connections.

During the tripping current measurement, the symbol is displayed even if the RCD has tripped.

The RCD tripping time is longer than the measurement time.

RCD tive.

should be considered

defec-

RCD

Large differences between repeated measurements of the RCD tripping time.

Pre-magnetization of transformer core inside RCD.

the the

Normal for some direct action residual current devices. Try to make next measurements at reversed polarity of the residual current.

Touch voltage generated dur- Check connections in the protective

ing the tA or IA, measurement conductor.

Measurement of tA or IA is impossible.

may exceed the safe voltage
level the measurement is automatically blocked.

Verify correct RCD selection in terms of rated residual current.

In set too high.

Set correct In.

Unstable UB or RE measure-

ment results, i.e. successive results in the same measurement point are significantly

Significant leakage highly variable.

currents,

different.

The symbol is not displayed even if the voltage be-

Contact electrode does not
function well or the meter’s input circuits are damaged.

Sent the meter for repair. Use of defective meter is not permitted.

tween the contact electrode

and the PE conductor ex-

Contact electrode is active for the

ceeds the detector tripping Rotary switch is not set cor- measurements of earth loop pa-

threshold (about 50 V).

rectly.

rameters and RCD, with the excep-

tion of the ZL-N,L-L UL-N,L-L function.

MPI-502F MPI-506 MPI-507 USER MANUAL

6 Power supply 6.1 Monitoring the power supply voltage
The batteries charging level is indicated by the symbol located in the top right-hand corner of the screen:
Batteries charged.
Batteries discharged.

Replace or charge the batteries!

Remember that:

· the

message on the display indicates insufficient power supply voltage and the need to re-

place or charge the batteries,

· the measurements made with the meter with insufficient power supply voltage have additional

measurement error which is impossible to be estimated by the user.

6.2 Replacing the batteries

The power supply of the meter is from four LR6 alkaline batteries or four NiMH rechargeable batteries (size AA). The batteries are in an compartment in the bottom part of the casing.

WARNING

Before replacing the batteries, disconnect the test leads from the meter.

To replace the batteries: 1. Disconnect the leads from the measurement circuit and switch off the meter. 2. Unscrew the bolt fastening the battery compartment cover (in the bottom part of the casing). 3. Replace all batteries. Observe correct polarity when putting new batteries (“-” at the spring part of
the contact plate). Reversed polarity of the batteries will not damage the meter or the batteries, but the meter will not work. 4. Put the cover in place and fasten it with the bolt.

NOTE!
· After replacement of batteries, set the power supply type in the main menu be-
cause correct charging level indication depends on this. Discharging characteristics of batteries and rechargeable batteries are different.
· If batteries leak in the compartment, send the meter to the service outlet.

Rechargeable batteries should be charged in an external charger.

MPI-502F MPI-506 MPI-507 USER MANUAL

6.3 General rules of using the Nickel Metal Hydride (Ni-MH) batteries
· If you are not going to use the instrument for a longer time, remove the rechargeable batteries and
store them separately.
· Store the rechargeable batteries in a dry, cool and well ventilated place and protect them from direct
sunlight. The long storage temperature should be below 30ºC. If the batteries are stored long at high temperatures, the chemical processes may reduce their life.
· The NiMH rechargeable batteries usually withstand 500-1000 charging cycles. Such batteries
achieve full capacity after forming (2-3 discharging and charging cycles). The most important factor which influences the battery life is the discharge level. The deeper the discharge level, the shorter the battery life.
· The memory effect appears in the NiMH batteries in a limited scope. These batteries can be re-
charged without more serious consequences. It is, however, recommended to discharge them completely every few cycles.
· During the storage of the Ni-MH rechargeable batteries, they are subject to self-discharge process at
the rate of about 30% a month. Keeping the batteries at high temperatures may accelerate this process even two times. In order not to allow an excessive discharging of the batteries (after which the forming will be needed), recharge the batteries once in a while (even unused batteries).
· Modern, fast chargers detect too low and too high temperature of the batteries and respond accord-
ingly. If the temperature is too low, the charging process should not start as it might irrevocably damage a rechargeable battery. The battery temperature increase is a signal to stop the charging and is typical. In addition to faster temperature increase of a battery which will not be fully charged, charging at high ambient temperatures results, however, in a reduced life.
· Remember that with fast charging, the batteries are charged to about 80% of their capacity; better
results can be achieved by continuing the charging process: the charger then goes into the small current charging mode and after a few hours the batteries are fully charged.
· Do not charge and do not use the batteries at extreme temperatures as they reduce the life of batter-
ies. Avoid using the battery-powered devices in very hot places. The rated operating temperature must be observed at all times.
7 Cleaning and maintenance
NOTE!
Use only the maintenance methods presented by the manufacturer in this manual.
Clean the meter casing and the case with a wet cloth, using generally available detergents. Do not use any solvents and cleaning media which could scratch the casing (powder, paste, etc.).
The probes can be cleaned with water and then wiped dry. Before longer storage, it is recommended to lubricate the probes with any machine grease.
Clean the spools and leads with water and detergents, then wipe dry.
The meter electronic system is maintenance free.

MPI-502F MPI-506 MPI-507 USER MANUAL

8 Storage
When storing the instrument, observe the following recommendations: · disconnect all leads from the meter, · thoroughly clean the meter and all accessories, · wind long test leads onto the spools, · if you are not going to use the instrument for a longer time, remove the batteries, · during a prolonged storage recharge the batteries from time to time to prevent total discharging.
9 Dismantling and disposal
Used electric and electronic equipment should be collected selectively, i.e. not placed with other types of waste.
Used electronic equipment shall be sent to the collection point according to the Used Electric and Electronic Equipment Act.
Before sending the instrument to the collection point, do not dismantle any parts by yourself. Observe local regulations on disposal of packagings and used batteries.

MPI-502F MPI-506 MPI-507 USER MANUAL

10 Technical data 10.1 Basic information
“m.v.” abbreviation in determination of accuracy means a standard measured value.

10.1.1 Voltage measurement

Range 0.0…299.9 V 300…500 V · Frequency range: 45…65 Hz

Resolution 0.1 V 1 V

Accuracy (2% m.v. + 6 digits) (2% m.v. + 2 digits)

10.1.2 Frequency measurement

Range 45.0…65.0 Hz · Voltage distribution: 50…500 V

Resolution 0.1 Hz

Accuracy (0,1% m.v. + 1 digit)

10.1.3 ZL-PE, ZL-N, ZL-L fault loop impedance measurement

ZS fault loop impedance measurement Measurement range according to IEC 61557:
Test lead 1.2 m WS-07 5 m 10 m 20 m WS-03 WS-04 WS-05

Measurement range ZS 0.13…1999
0.17…1999 0.21…1999 0.29…1999
0.19…1999

Display ranges:

Display range

Resolution

Accuracy

0…19.99

0.01

(5% m.v. + 3 digits)

20.0…199.9

0.1

(5% m.v. + 3 digits)

200…1999

(5% m.v. + 3 digits)

· Rated operating voltage UnL-N/ UnL-L: 220/380 V, 230/400 V, 240/415 V · Voltage operating range: 180…270 V (for ZL-PE and ZL-N) and 180…460 V (for ZL-L) · Mains rated frequency fn: 50 Hz, 60 Hz · Frequency operating range: 45…65 Hz

· Maximum test current: 7.6 A for 230 V (4×10 ms), 13.3 A for 400 V (4×10 ms)

· Check of PE terminal connection correctness with the contact electrode (for ZL-PE)

Readings of fault loop impedance RS and fault loop reactance XS

Display range

Resolution

Accuracy

0…19.99 20.0…199.9

0.01 0.1

(5% + 5 digits) of ZS value (5% + 5 digits) of ZS value

· Calculated and displayed values ZS<200

MPI-502F MPI-506 MPI-507 USER MANUAL

Readings of short-circuit current IK Measurement ranges according to IEC 61557 can be calculated from the measurement ranges ZS and rated voltages.

Display range

Resolution

Accuracy

0.110…1.999 A

0.001 A

2.00…19.99 A

0.01 A

Calculated on the basis of

20.0…199.9 A

0.1 A

accuracy for the fault loop

200…9999 A

1 A

· Prospective fault current calculated and displayed by the meter may slightly differ from the value

calculated by the user with a calculator, basing on the displayed value of the impedance, be-

cause the meter calculates the current from unrounded value of fault loop impedance (which is

used for displaying). As the correct value, consider Ik current value, displayed by the meter or by firmware.

10.1.4 ZL-PE fault loop impedance measurement RCD (without tripping the RCD)

ZS fault loop impedance measurement
Measurement range according to IEC 61557: 0.5…1999 for the 1.2 m leads, WS-03, WS-04, WS-05 and WS-07, and 0.51…1999 for the 5 m, 10 m and 20 m leads

Display range

Resolution

Accuracy

0…19.99

0.01

(6% m.v. + 10 digits)

20.0…199,9

0.1

(6% m.v. + 5 digits)

200…1999

(6% m.v. + 5 digits)

· Does not trip the RCD’s with In 30 mA · Rated operating voltage Un: 220 V, 230 V, 240 V · Voltage operating range: 180…270 V

· Mains rated frequency fn: 50 Hz, 60 Hz · Frequency operating range: 45…65 Hz

· Check of PE terminal connection correctness with the contact electrode

Readings of fault loop impedance RS and fault loop reactance XS

Display range

Resolution

Accuracy

0…19.99

0.01

(6% + 10 digits) of ZS value

20.0…199.9

0.1

(6% + 5 digits) of ZS value

· Calculated and displayed values ZS<200

Readings of short-circuit current IK Measurement ranges according to IEC 61557 can be calculated from the measurement ranges ZS and rated voltages.

Display range

Resolution

Accuracy

0.110…1.999 A

0.001 A

2.00…19.99 A

0.01 A

Calculated on the basis of

20.0…199.9 A

0.1 A

accuracy for the fault loop

200…9999 A

1 A

· Prospective fault current calculated and displayed by the meter may slightly differ from the value

calculated by the user with a calculator, basing on the displayed value of the impedance, be-

cause the meter calculates the current from unrounded value of fault loop impedance (which is

used for displaying). As the correct value, consider Ik current value, displayed by the meter or by firmware.

MPI-502F MPI-506 MPI-507 USER MANUAL

10.1.5 ZL-PE fault loop impedance measurement RCD (without tripping the RCD) EV type RCD

ZS fault loop impedance measurement for meters:
· MPI-502F serial number LD0041 · MPI-506 serial number K51528 · MPI-507

Measurement range according to IEC 61557: 0.5…1999 for the 1.2 m leads, WS-03, WS-04, WS-05 and WS-07, and 0.51…1999 for the 5 m, 10 m and 20 m leads

Display range

Resolution

Accuracy

0…19.99

0,01

(6% m.v. + 10 digits)

20.0…199.9

0,1

(7% m.v. + 5 digits)

200…1999

(7% m.v. + 5 digits)

· Does not trip the EV type RCDs with In 6 mA · Rated operating voltage Un: 220 V, 230 V, 240 V · Voltage operating range: 180…270 V

· Mains rated frequency fn: 50 Hz, 60 Hz · Frequency operating range: 45…65 Hz

· Check of PE terminal connection correctness with the contact electrode

ZS fault loop impedance measurement for meters:
· MPI-502F serial number LD0040 · MPI-506 serial number K51527

Measurement range according to IEC 61557: 0.5…199,9 for the 1.2 m leads, WS-03, WS-04,

WS-05 and WS-07, and 0.51…199,9 for the 5 m, 10 m and 20 m leads

Display range

Resolution

Accuracy

0…1.49

0.01

(6% m.v. + 10 digits)

1.50…19.99 20.0…199.9

0.01 0.1

(15% m.v. + 8 digits)

200…1999

unspecified

· Does not trip the EV type RCDs with In 6 mA

· Rated operating voltage Un: 220 V, 230 V, 240 V

· Voltage operating range: 180…270 V

· Mains rated frequency fn: 50 Hz, 60 Hz

· Frequency operating range: 45…65 Hz

· Check of PE terminal connection correctness with the contact electrode

MPI-502F MPI-506 MPI-507 USER MANUAL

Readings of fault loop impedance RS and fault loop reactance XS for meters:
· MPI-502F serial number LD0041 · MPI-506 serial number K51528 · MPI-507

Display range

Resolution

0…19.99

0.01

20.0…199.9

0.1

· Calculated and displayed values ZS<200

Accuracy (6% + 10 digits) of ZS value (7% + 5 digits) of ZS value

Readings of fault loop impedance RS and fault loop reactance XS for meters:
· MPI-502F serial number LD0040 · MPI-506 serial number K51527

Display range

Resolution

0…1.49

0.01

1.50…19.99

0.01

20.0…199.9

0.1

· Calculated and displayed values ZS<200

Accuracy (6% + 10 digits) of ZS value
(15% + 8 digits) of ZS value

Readings of short-circuit current IK Measurement ranges according to IEC 61557 can be calculated from the measurement ranges ZS and rated voltages.

Display range

Resolution

Accuracy

0.110…1.999 A

0.001 A

2.00…19.99 A

0.01 A

Calculated on the basis of

20.0…199.9 A

0.1 A

accuracy for the fault loop

200…9999 A

1 A

· Prospective fault current calculated and displayed by the meter may slightly differ from the value

calculated by the user with a calculator, basing on the displayed value of the impedance, be-

cause the meter calculates the current from unrounded value of fault loop impedance (which is

used for displaying). As the correct value, consider Ik current value, displayed by the meter or by firmware.

MPI-502F MPI-506 MPI-507 USER MANUAL

10.1.6

Measurement of earth resistance 3-pole method (RE3P)

The measurement method: 3-pole, in accordance with EN 61557-5 Range of measurement in accordance with IEC 61557-5: 0.63 …1999 for Un = 50 V.

Display range
0.00…19.99 20.0…199.9 200…1999

Resolution
0.01 0.1 1

Accuracy (3% m.v. + 5 digits)
5% m.v.

· Measuring current at the short circuit: 15 mA. · Measuring frequency: 125 Hz or 150 Hz. · Selected test voltage: 25 V or 50 V. · Maximum interference voltage for the RE measurement: 24 V.

10.1.7 Measurement of the RCD parameters

· Rated operating voltage Un: 220 V, 230 V, 240 V · Voltage operating range: 180…270 V · Mains rated frequency fn: 50 Hz, 60 Hz · Frequency operating range: 45…65 Hz

RCD tripping test and tA tripping time measurement (for tA measurement function) Measurement range according to IEC 61557: 10 ms … to the upper limit of displayed value

RCD type

Multiplication factor setting

Measurement range

Resolution

Accuracy

general

0.5 In 1 In 2 In

0…300 ms 0…150 ms

selective

5 In 0.5 In 1 In 2 In

0…40 ms 0…500 ms 0…200 ms

1 ms

5 In

0…150 ms

1) for In = 10 mA and 0.5 In the accuracy is ±(2% m.v. + 3 digits)

· Residual current feed accuracy:

±(2% m.v. + 2 digits)1)

for 1 In, 2 In and 5 In …………………………………………………………………………………………… 0…8% for 0.5 In …………………………………………………………………………………………………………….-8…0%

RMS leakage current during the RCD tripping time measurement

Multiplication factor setting

0.5

3.5

50 100

15 10.5 30

84 150 210

100 50

35 100 140 200 280 500

300 150 105 300 420

500 250 175 500

MPI-502F MPI-506 MPI-507 USER MANUAL

RE – protective conductor resistance for RCD

Selected RCD rated current

Measurement range

Resolution

10 mA 30 mA

0.01 k…5.00 k 0.01 k…1.66 k

0.01 k

100 mA

1 …500

300 mA

1 …166

500 mA

1 …100

Test current
4 mA 12 mA 40 mA 120 mA 200 mA

Accuracy 0….+10% m.v ±8 digits 0….+10% m.v. ±5 digits
0….+5% m.v. ±5 digits

Measurement of touch voltage UB refererd to rated residual current Measurement range according to IEC 61557: 10…50 V

Measurement range

Resolution

Test current

Accuracy

0…9,9 V 10.0…99.9 V

0.1 V

0.4 x In

0…10% m.v. ± 5 digits 0…15% m.v.

RCD IA tripping current measurement for sinusoidal residual current Measurement range according to IEC 61557: (0.3…1.0)In

Selected RCD rated current

Measurement range

Resolution

Test current

Accuracy

10 mA

3.0…10.0mA

15 mA

4,5…15,0 mA

0,1 mA

30 mA 100 mA

9,0…30,0 mA 30…100 mA

0,3 x In…1,0 x In

5% In

300 mA

90…300 mA

1 mA

500 mA

150…500 mA

· It is possible to start the measurement from positive or negative half-period of forced residual current

· Test current flow time ………………………………………………………………………………….. max. 3200 ms

RCD IA tripping current measurement for unidirectional pulsating residual current Measurement range according to IEC 61557: (0.4…1.4)In for In30 mA and (0.4…2)In for In=10 mA

Selected RCD Measurement

rated current

range

Resolution

Test current

Accuracy

10 mA

3.5…20.0 mA

0.35 In…2.0 In

15 mA

5.3…21.0 mA

0.1 mA

0.35 In…1.4 In

30 mA

10.5…42.0 mA

10% In

100 mA 300 mA

35…140 mA 105…420 mA

1 mA

0.35 In…1.4 In

· It is possible to start the measurement from positive or negative half-period of forced residual current

· Test current flow time ………………………………………………………………………………….. max. 3200 ms

MPI-502F MPI-506 MPI-507 USER MANUAL

10.1.8

Measurement of insulation resistance

Test range according to IEC 61557-2 for UN = 100 V: 100 k…99.9 M

Display range for UN = 100 V

Resolution

Accuracy

0…1999 k

1 k

2.00…19.99 M

0.01 M

(5% m.v. + 8 digits)

20.0…99.9 M

0.1 M

Test range according to IEC 61557-2 for UN = 250 V: 250 k…199.9 M

Display range for UN = 250 V

Resolution

Accuracy

0…1999 k

1 k

2.00…19.99 M

0.01 M

(5% m.v. + 8 digits)

20.0…199.9 M

0.1 M

Test range according to IEC 61557-2 for UN = 500 V: 500 k…599.9 M

Display range for UN = 500 V

Resolution

Accuracy

0…1999 k

1 k

2.00…19.99 M

0.01 M

(5% m.v. + 8 digits)

20.0…599.9 M

0.1 M

· Test voltage: 100 V, 250 V, 500 V

· Accuracy of generated voltage (Robc [] 1000*UN [V]): -0+10% from the set value

· Detection of a dangerous voltage before commencing a measurement

· Discharging the object tested

· Measurement of voltage on terminals +RISO, -RISO within the range of 0…440 V

· Test current <2 mA

10.1.9 Low-voltage continuity and resistance measurement

Continuity measurements of protective conductors and equipotential bonding with the

200 mA current

Measurement range according to IEC 61557-4: 0.12…400

Range

Resolution

Accuracy

0.00…19.99

0.01

20.0…199.9

0.1

(2% m.v. + 3 digits)

200…400

· Voltage on open terminals: 4…20 V

· Output current at R<2 : min 200 mA (ISC: 200…250 mA)

· Test leads resistance compensation

· Measurements for both current polarities

Low-current resistance measurement

Range

Resolution

0.0…199.9

0.1

200…1999

· Voltage on open terminals: 4…20 V

· Short-circuit current ISC: 8…15 mA

· Audio signal for measured resistance < 30 ± 50%

· Test leads resistance compensation

Accuracy (3% m.v. + 3 digits)

MPI-502F MPI-506 MPI-507 USER MANUAL

10.1.10

Phase sequence

· Phase sequence indication: correct, incorrect
· Range of mains voltage UL-L: 100…440 V (45…65 Hz) · Display of phase-to-phase voltages

10.2 Other technical specifications
a) Insulation type according to EN 61010-1 and IEC 61557 ……………………………………………….double b) Measurement category according to EN 61010-1 ………………………………………. IV 300 V (III 600 V) c) casing protection rating according to EN 60529 ……………………………………………………………… IP67 d) meter power supply …………. LR6 alkaline batteries or AA size NiMH rechargeable batteries (4 pcs) e) dimensions ………………………………………………………………………………………….. 220 x 102 x 61 mm f) weight………………………………………………………………………………………………………………. ca. 0.8 kg g) storage temperature …………………………………………………………………………………………-20…+70C h) operating temperature …………………………………………………………………………………………0…+50C i) humidity……………………………………………………………………………………………………………..20…90% j) reference temperature ……………………………………………………………………………………….. +23 ± 2C k) reference humidity ……………………………………………………………………………………………….40…60% l) altitude (above sea level) …………………………………………………………………………………….. 2000 m* m) time to Auto-OFF …………………………………………………………………..300, 600, 900 seconds or none n) number of Z or RCD measurements (for rechargeable batteries) ……… >5000 (2 measurements / minute) o) display …………………………………………………………………………………………………………LCD segment p) measurement results memory …………………………………………………………. 990 cells, 10 000 entries q) transmission of results ………………………………………………………………………………………… Bluetooth r) quality standard………….development, design and manufacture acc. to ISO 9001, ISO 14001, ISO 45001 s) instrument conforming to ……………………………………………………………………………………IEC 61557 t) product meets the EMC requirements (resistance for industrial environments) according to the
standards …………………………………………………………………………….EN 61326-1 and EN 61326-2-2

SONEL S.A. hereby declares that the radio device type MPI-502F/506/507 complies with Directive 2014/53/EU. The full text of the EU Declaration of Conformity is available at the following website address: https://sonel.pl/en/download/declaration-of-conformity/

MPI-502F MPI-506 MPI-507 USER MANUAL

10.3 Additional information
Information about additional uncertainty is useful mainly when the meter is used in untypical conditions and for the measurements laboratories during calibration.

10.3.1 Additional uncertainty according to IEC 61557-3 (Z)

Influencing value Location Supply voltage

Designation E1 E2

Temperature 0…35°C

Phase angle 0…30° at the bottom of measurement range

E6.2

Frequency 99%…101%

Mains voltage 85%…110%

Harmonics

DC component

E10

Additional uncertainty 0%
0% (BAT is not displayed) 1.2 m, WS-07 leads 0
5 m lead 0.011 10 m lead 0.019 20 m lead 0.035 WS-03, WS-04, WS-05 leads 0.015
0.6%
0% 0% 0% 0%

10.3.2 Additional uncertainty according to IEC 61557-4 (R ±200 mA)

Influencing value Location Supply voltage Temperature 0…35°C

Designation E1 E2 E3

Additional uncertainty 0%
0,5% (BAT is not displayed) 1,5%

10.3.3 Additional uncertainty according to IEC 61557-6 (RCD)

IA, tA, UB Influencing value
Location Supply voltage Temperature 0…35°C Electrodes resistance Mains voltage 85%…110%

Designation E1 E2 E3 E5 E8

Additional uncertainty 0%
0% (BAT is not displayed) 0% 0% 0%

10.3.4

Influence of serial interference voltage on the resistance meas-

urements for function RE3P

RE 0,00…10,00 10.01…1999

UN 25 V 50 V 25 V, 50 V

Additional uncertainty [] ±(0.001RE+0.01)Uz+0.007Uz2
±(0.001RE+0.01)Uz+0.004Uz2 ±(0.001RE+0.01)Uz+0.001Uz2

MPI-502F MPI-506 MPI-507 USER MANUAL

10.3.5

Influence of the auxiliary electrodes on earth resistance meas-

urements for function RE3P

RH, RS
RH 1.99 k RS 1.99 k

Additional uncertainty [%]

(

150

R H

0,004

R S

+ 100000

R E

1,5

– 8

R H

)

RE[], RS[] and RH[] are values displayed by the device.

10.3.6

Additional uncertainties according to IEC 61557-5 (RE3P)

Significant parameter

Designation

Additional uncertainty

Position

Supply voltage

Temperature

Serial interference voltage

Resistance of auxiliary electrodes

0% 0% (BAT is not lit)
±0.2 digit/°C for R<1 k ±0,07%/°C ± 0,2 digit/°C for R1 k
According to the formulas shown in sec. 10.3.4
(UN=3 V 50/60 Hz) According to the formula in
sec. 10.3.5

11 Manufacturer
The manufacturer of the equipment and provider of service during and past the warranty period:
SONEL S.A. Wokulskiego 11 58-100 widnica
Poland tel. +48 74 884 10 53 (Customer Service)
e-mail: customerservice@sonel.com web page: www.sonel.com
NOTE!
Service repairs must be performed solely by the manufacturer.

MPI-502F MPI-506 MPI-507 USER MANUAL

NOTES

MPI-502F MPI-506 MPI-507 USER MANUAL

MEASUREMENT MESSAGES
NOTE!
The meter is designed for operation at rated phase voltages of 220 V, 230 V and 240 V and phase-to-phase voltages of 380 V, 400 V, 415 V. Connecting voltage higher than allowed between any of the test terminals may damage the meter and cause a hazard to the user.
Measurements Interference voltage occurs on the tested object. Measurement is possible but may be burdened with additional uncertainty. The meter is ready for measurement. Maximum temperature of the meter is exceeded. The measurement is blocked. Phase connected to N terminal instead of L terminal (for example, exchange of L and N in the mains socket). An incompatibile measurement adapter is connected to the meter. The measurement adapter cable is damaged. Short-circuit loop of the meter is faulty. Error during measurement. Error during the measurement: loss of voltage after the measurement. Voltage on terminals L and N is not within measurable range. Voltage on terminals L and PE is not within measurable range. Safe contact voltage exceeded. The tested facility is live. The measurement is blocked. Immediately disconnect the meter from the object (both test leads). Error in connection of N conductor.
RCD measurements
RCD not in good working order.
RCD in good working order.
RCD did not trip or tripped too late.
Switch on the RCD.
RE measurements
Interruption in the current probe circuit..
Interruption in the voltage probe circuit.
Interruption in measuring circuit or resistance of test probes is higher than 2 k. Battery / rechargeable battery status
Charged. Discharged. Completely discharged. Replace or recharge the batteries.

Documents / Resources

Sonel MPI-502F Meter For Electrical Tester [pdf] User Manual
MPI-502F, MPI-506, MPI-507, MPI-502F Meter For Electrical Tester, MPI-502F, Meter For Electrical Tester, Electrical Tester

References

User Manual

Sonel MPI-502F Meter For Electrical Tester User Manual

MPI-502F Meter For Electrical Tester

Specifications

Product Information

Product Usage Instructions

1. General Information

2. Quick Start

3. Measurements

Frequently Asked Questions (FAQ)

Q: How can I calibrate the device?

Q: What should I do if the device displays an error code?

Documents / Resources

References

Leave a comment

Cancel reply