Metrel MI 3108 EurotestPV: Photovoltaic and Electrical Installations Tester
The Metrel MI 3108 EurotestPV is a versatile instrument designed for comprehensive testing of both photovoltaic (PV) installations and general electrical installations. It meets the requirements of EN 61557 standards and provides all necessary tests for single-phase PV systems as per EN 62446, including I-U characteristic measurements and STC value calculations as per EN 61829. The device is built to withstand demanding conditions, operating up to 1000 V and 15 A DC, with a PV Safety Probe ensuring safe disconnection.
Measuring Functions
Photovoltaic Installations
- DC Side Measurements: Voltage, current, power, Uoc (Open Circuit Voltage), Isc (Short Circuit Current), I-U curve of PV modules and strings, irradiance, and module temperature.
- AC Side Measurements: Voltage, current, power, efficiency of PV module, inverter, and PV system calculations.
Electrical Installations
- Insulation resistance
- Continuity of PE conductors
- Line impedance
- Loop impedance (with and without RCD tripping)
- RCD testing (Type AC, A, and B)
- Earth resistance
- AC current (load and leakage)
- TRMS voltage, frequency, phase sequence
- Power, energy, harmonics
Key Features
Photovoltaic Installations
- Calculation of STC values: Recalculates measured voltage and current values to Standard Test Condition values for easy comparison under different environmental conditions.
- Graphical representation: Displays the I-V characteristic of PV modules or strings on the LCD.
- Power and efficiency measurements: Utilizes 2 voltage and 2 current channels for simultaneous AC & DC parameter measurements.
- PV Remote Unit: An optional unit for simultaneous measurement of solar irradiation and PV module temperature.
Electrical Installations
- RCD Auto: Automates RCD testing to reduce test time.
- Trip Lock function: Allows loop impedance tests without tripping RCDs.
- B type RCD testing: Supported.
- Earth resistance measurement: Supports 3-wire earth resistance testing.
- Built-in fuse tables: Aids in automatic evaluation of line/loop impedance results.
- Online voltage monitoring: Monitors all 3 voltages in real-time.
- Scope function: Provides real-time U/I scope.
- Harmonics analysis: Supports 1-phase power and energy measurements up to the 11th harmonic.
- Memory: Stores up to 1800 test results or 500 graphical results with timestamps.
- BT connectivity: Enables Bluetooth communication with Android tablets and smartphones via an optional dongle.
- Android application: Facilitates advanced data management with EuroLink PV and EuroLink Android apps.
- PC SW EuroLink PRO: Allows downloading, uploading, reviewing, analyzing, and printing of test results.
Application
- Testing, evaluation, and troubleshooting of photovoltaic installations.
- Power and energy efficiency measurements (AC and DC).
- Initial and periodic testing of domestic and industrial single and three-phase electrical installations.
Standards
Functionality
- IEC/EN 61557 series
- IEC 62446 (photovoltaics)
- IEC 61829
Other reference standards for testing
- BS 7671
- EN 61008
- EN 61009
- EN 60364-4-41
- AS/NZ 3017
Electromagnetic compatibility
- EN 61326
Safety
- EN 61010-1
- EN 61010-2-030
- EN 61010-031
- EN 61010-2-032
Technical Data
Photovoltaic Installation Measurements
| Function | Measuring range | Basic accuracy |
|---|---|---|
| Voltage | 0 VDC ... 999 VDC 0 VAC ... 999 VAC | ±(1% of reading + 2 digits) |
| Current | I-V m.: 0.00 A ... 15 ADC Panel m.: 0.0 mA ... 300 ADC Invert. m.: 0.0 mA ... 300 AAC | ±(1% of reading + 2 digits) |
| Power | I-V m.: 0 ... 14.99 kW Panel m.: 0 ... 999 kW | ±(2.5% of reading + 6 digits) |
| U/I curve | 1000 V/15A / 15 kW | ±(2% of reading + 3 digits) |
| Irradiance | 000 ... 1.75 kW/m² | ±(4% of reading + 5 digits) |
| Temperature | -10.0 °C ... + 85.0 °C | ± 5 digits |
The instrument delivers accurate measurement results, fully within technical specifications, for modules with efficiencies of up to 20%.
Electrical Installation Measurements
| Function | Measuring range | Basic accuracy |
|---|---|---|
| Insulation resistance (EN 61557-2) | U = 50, 100, 250 VDC: R: up to 199.9 MΩ U = 500 VDC, 1 kVDC: R: up to 999 MΩ | ±(5% of reading + 3 digits) |
| Continuity, 200 mA (EN 61557-4) | 0.00 Ω ... 1999 Ω | ±(3% of reading + 3 digits) |
| Continuity, 7 mA | 0.0 Ω ... 1999 Ω | ±(5% of reading + 3 digits) |
| Loop impedance (EN 61557-3) | 0.00 Ω ... 9.99 kΩ | ±(5% of reading + 5 digits) |
| Line impedance (EN 61557-3) | 0.00 Ω ... 9.99 kΩ | ±(5% of reading + 5 digits) |
| Voltage | 0 VAC ... 550 VAC | ±(2% of reading + 2 digits) |
| Frequency | 0.00 Hz ... 499.9 Hz | ±(0.2% of reading + 1 digits) |
| Phase sequence (EN 61557-7) | 1.2.3 or 3.2.1 | - |
| RCD testing (EN 61557-6) | IΔN: 10 mA, 30 mA, 100 mA, 300 mA, 500 mA, 1 A | - |
| Contact voltage UC | 0.0 V ... 99.9 V | ±(10% of reading + 3 digits) |
| Trip-out time | 0 ms ... 40 ms | ±(1% of reading + 1 digits) |
| Trip-out current | 0.2 x IΔN ... 2.2 x IΔN | ±0.1 x IΔN |
| Earth resistance (EN 61557-5) | 0.00 Ω ... 9999 Ω | ±(5% of reading + 5 digits) |
| Energy | 0.000 Wh - 1999 kWh | - |
| Harmonics | up to 11th | - |
General
| Main unit | Remote unit | |
|---|---|---|
| Display | 128 x 64 dots matrix display with backlight | 128 x 64 dots matrix display with backlight |
| Power supply | 6 x 1.2 V NiMH batteries, type AA | 6 x 1.2 V NiMH batteries, type AA |
| Overvoltage category | CAT II / 1000 VDC; CAT III / 600 V; CAT IV / 300 V | - |
| Protection class | double insulation | - |
| COM port | RS232 and USB | RS232 |
| Dimensions | 230 x 103 x 115 mm | 140 x 230 x 80 mm |
| Weight | 1.3 kg | 1.0 kg |
PV System Parameters
Diagram illustrating the connection of the EurotestPV to a PV system, showing DC and AC sides. The DC side includes the solar module, DC disconnect, and inverter input, measuring Uoc, Isc, PmpP, and I-V curve. The AC side includes the inverter output, AC isolator, and the main consumer unit, measuring power, energy, and efficiencies. The diagram also shows the optional Remote Unit for irradiance and temperature measurements.
Ordering Information
MI 3108 ST
- Instrument MI 3108 EurotestPV
- A 1552 Large carrying bag
- A 1053 Schuko-plug test cable
- A 1193 Test lead, 3 x 1.5 m
- A 1016, A 1062, A 1015, A 1014 Test probe, 4 pcs
- A 1064, A 1309, A 1310, A 1013 Crocodile clip, 4 pcs
- A 1384 PV Safety Probe
- S 2145 PV MC3/4 male/female adapters
- A 1427 PV Reference Cell
- A 1400 Temperature probe
- A 1707 Set of carrying straps
- USB and RS232 - PS/2 cable
- Power supply adapter + 6 NiMH batteries, type AA
- PC SW EuroLink PRO
- Short instruction manual
- Instruction manual and handbook on storage media
- Calibration certificate
MI 3108 PS
- MI 3108 ST
- A 1378, A 1414 EurotestPV Remote
- A 1401 Tip commander
- PC SW EuroLink PRO Plus license
Optional Accessories
| Photo | Order No. | Acc. description |
|---|---|---|
| [Image of PV Remote Unit] | A 1378 | PV Remote Unit |
| [Image of Plug commander] | A 1314 | Plug commander |
| [Image of Tip commander] | A 1401 | Tip commander |
| [Image of Current clamp] | A 1018 | Current clamp (low range, leakage) |
| [Image of AC/DC Current clamp] | A 1391 | AC/DC Current clamp |
| [Image of Barcode scanner] | A 1105 | Barcode scanner |
| [Image of EuroLink Android] | A 1431 | EuroLink Android |
| [Image of Bluetooth dongle] | A 1436 | Bluetooth dongle |
| [Image of PV fused test lead] | A 1385 | PV fused test lead |
| [Image of Earth test lead set] | S 2026 | Earth 20 m set, 3 wire |
| [Image of Earth test lead set] | S 2027 | Earth 50 m set, 3 wire |
| [Image of Upgrade code] | A 1292 | Upgrade code EuroLink PRO to EuroLink PRO Plus |
Metrel d.o.o. is a manufacturer of measuring and regulation equipment located in Horjul, Slovenia. For more information, visit www.metrel.si.
Metrel d.o.o.
