Datasheet
Manual
Product Introduction
Product Features
Technical Details
Accessories
Product Introduction
MI 3108 EurotestPV is a combined photovoltaic tester and electrical installations safety tester. It enables complete testing of electrical installations according to EN 61557 standards and in addition performs all necessary tests required on single-phase photovoltaic (PV) installations. This includes all of the tests as required by EN 62446, but also includes I – U characteristic, Calculation of STC values and power measurements on Inverter’s DC and AC sides. The unit is designed for the demanding working conditions (up to 1000 V, with 15 A DC). To greatly improve user safety the MI 3108 EurotestPV comes with the PV Safety Probe which ensures safe disconnection every time.
MEASURING FUNCTIONS
Photovoltaic installations:
Measurements on DC side of PV installation:
- Voltage, current, power;
- Uoc (Open Circuit Voltage) and Isc (Short Circuit Current);
- I – U curve of PV modules and strings;
- Irradiance;
- Module temperature.
Measurements on AC side of PV installation (power quality):
- Voltage, current, frequency, power, PF, energy, harmonics;
- Efficiency of PV module, inverter, PV system calculation.
Electrical installations:
- Insulation resistance;
- Continuity of PE conductors;
- Line impedance;
- Loop impedance (sub-functions with high current 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.
Product Features
Photovoltaic installations:
- Calculation of STC values;
- Efficiency calculations;
- Graphical representation of module’s I – U curve;
- 2 voltage & 2 current channels for simultaneous AC & DC parameters measurements;
- Optional PV Remote Unit for simultaneous measurements of solar irradiation and temperature of PV module.
Electrical installations:
- Automated RCD testing procedure;
- Support for B type RCD;
- Earth resistance measurement;
- Built-in fuse tables for automatic evaluation of the line / loop impedance results;
- Online monitoring of all 3 voltages;
- Scope function;
- Loop impedance test without tripping the RCD;
- 1-phase power and energy measurements (including harmonics up to 11th).
Technical Details
PHOTOVOLTAIC INSTALLATION MEASUREMENTS
| Function | Measuring range | Basic accuracy |
| Voltage | 0 VDC … 999 VDC
0 VAC … 999 VAC I-V m.: 0 VDC … 999 VDC |
±(1 % of reading + 2 digits)
±(1.5 % of reading + 3 digits) ±(1 % of reading + 2 digits) |
| Current | Panel m.: 0.0 mA … 300 ADC
Invert. m.: 0.0 mA … 300 AAC I-V m.: 0.00 A … 15 ADC |
±(1 % of reading + 2 digits)
±(1.5 % of reading + 3 digits) ±(1 % of reading + 2 digits) |
| Power | Panel m.: 0 … 999 kW
I-V m.: 0 … 14.99 kW |
±(2.5 % of reading + 6 digits)
±(2 % of reading + 3 digits) |
| U / I curve |
1000 V / 15 A / 15 kW |
|
| Irradiation | 000 … 1.75 kW/m2 | ±(4 % of reading + 5 digits) |
| Temperature | -10.0 °C … + 85.0 °C | ± 5 digits |
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)
±(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) |
I∆N: 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 … 40 ms | ±1 ms |
| Trip-out current | 0.2 x I∆N … 2.2 x I∆N | ±0.1 x I∆N |
| 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 |
Accessories
| MI 3108 Standard set | MI 3108 Pro set |
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