Metrel's MI3108PS Pro is a lightweight testing instrument that's an essential purchase for solar PV professionals. This comprehensive tester ensures that all installations and testing procedures are carried out with high accuracy and also ensures that compliance with all solar installation regulations (including EN 61557 and EN 62446) is maintained at all times.
This unit is literally packed full of measurement capabilities. It can measure photovoltaic installations and electrical installations, with multiple measurement types for each function of the meter. When measuring PV installations the MI3108PS can measure voltage, current, power and energy on DC side, Uoc (open circuit voltage), Isc (short circuit current), irradiance and module temperature. On the AC side it can be used to measure voltage, current, frequency, power, PF, energy, harmonics, efficiency of a PV module, inverter efficiency and PV system calculation.
When used on electrical installations this unit can measure insulation resistance, continuity of PE conductors, line impedance, loop impedance (including sub functions with high current and non-RCD tripping), RCD testing (AC, A and B), earth resistance, AC current (load and leakage), true RMS voltage, frequency, phase sequence, power, energy and harmonics.
This means that the MI3108PS literally contains every test you could ever need for installing and maintaining the efficiency of complex solar PV installations. It also includes a suite of advanced features including built-in memory for test data storage, handy built-in help screens, rechargeable batteries, monitoring of 3 voltages and much more.
PHOTOVOLTAIC INSTALLATION MEASUREMENTS | ||
Function | Measuring Range | Basic Accuracy |
Voltage | 0 V DC ... 999 V DC 0 V AC ... 999 V AC I-V m.: 0 V DC ... 999 V DC |
±(1.5 % of reading + 5 digits) ±(1.5 % of reading + 3 digits) ±(2 % of reading + 2 digits) |
Current | Panel m.: 0.0 mA ... 300 A DC Invert. m.: 0.0 mA ... 300 A AC I-V m.: 0.00 A ... 15 A DC |
±(1.5 % of reading + 5 digits) ±(1.5 % of reading + 3 digits) ±(2 % of reading + 3 digits) |
Power | Panel m.: 0 ... 200 kW I-V m.: 0 ... 15 kW |
±(2.5 % of reading + 6 digits) ±(3 % of reading + 5 digits) |
Energy | 0.000 Wh - 1999 kWh | |
U/I Curve | 1000 V / 15 A / 15 kW | |
Harmonics | up to 11th | |
Irradiation | 0 ... 2000 W/m2 | ±(5 % of reading + 5 digits) |
Temperature | -10 °C ... + 85 °C | ± 5 digits |
ELECTRICAL INSTALLATION MEASUREMENTS | ||
Function | Measuring Range | Basic Accuracy |
Insulation Resistance (EN61557-2) | 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) ±(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 | 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 | (-0 % / +15 %) of reading |
Trip Out Time | 0 ms ... max. time | ±1 ms |
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) |
General | Main Unit | Remote Unit |
Display | 128 x 64 dots matrix display with backlight | |
Power Supply | 6 x 1.2 V NiMH batteries, type AA | |
Overvoltage Category | 1000 V DC / CAT II 600 V / CAT III; 300 V / CAT IV |
|
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 |