Process, Instrumentation & Environment

Electrical tester MI 3108 - Metrel

Combined photovoltaic tester and electrical installations safety tester model MI 3108 Eurotest PV.
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.
The instrument allows all 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.
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Photovoltaic installations:
  • Calculation of STC values;
  • Efficiency calculations;
  • Graphical representation of module’s I - U curve;
  • Measurements on DC side of PV installation:
  • Voltage, current, power, energy;
  • Uoc (open circuit voltage) and Isc (short circuit current);
  • 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:
  • Automated RCD testing procedure;
  • Support for B type RCD;
  • Earth resistance measurement;
  • 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);
  • 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.

Photovoltaic installations:
  • 2 voltage & 2 current channels for a quicker simultaneous AC & DC parameters measurements; I - U curve of PV modules and strings to facilitate the analysis;
  • Optional PV remote unit for simultaneous measurements of solar irradiation and temperature of PV module.
Electrical installations:
  • Built-in fuse tables for automatic evaluation of the line / loop impedance results;
  • PC software eurolink PRO is a strong creating tool of professional visual inspection report and testing result report to enrich this kind of service.
  • Electrical technical advisers;
  • Electrical maintenance technicians;
  • National electrical grid technicians;
  • Photovoltaic installers and maintenance technicians.

F.Fonseca is the representative of Metrel in Portugal.
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