Multifunction installation tester
Multifunctie installatietester
Also known as: installatiemeter, mfi, pat-tester, megatester, fluke
Apparatus performing all mandatory NEN 1010 §61 measurements in one unit: Riso (500 V), Zs loop, Zi installation, RCD trip time and breaking current, continuity with ≥200 mA, phase sequence. Examples: Megger MFT, Fluke 1664, Metrel MI 3155.
Practical example
Multifunctional installation tester With a Fluke 1664, insulation resistance (Riso), loop impedance (Zs), RCD tripping time, and continuity are recorded in one measurement round for the handover report.
Common mistake
Multifunctional installation tester Common mistake: Blindly trusting the instrument's automatic test sequence without assessing measured values — the instrument provides no conclusion, only numbers the technician must verify against the standard.
See also
Related terms
- Insulation resistance
- Fault-loop impedance
- RCD test (trip time)
- PE continuity test
- Polarity check
- Megohmmeter (insulation tester)
- Hipot Test (High-Potential Withstand Test)
- Calibration of test instruments
- Primary/Secondary Injection Test (Protection Relay)
- Thermal imaging inspection
- Earth Resistance — Seasonal Variation (Frost/Drought)
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