3M COMBI521 Multifunction Tester Instructions
The 3M COMBI521 Multifunction Tester is a versatile instrument for electrical installation safety testing, power quality analysis, and EVSE safety testing. It performs tests in compliance with IEC/EN 61557-1 and measures continuity, insulation resistance, earth resistance, RCDs, impedance, phase sequence, and more. With the AUTO function, it simplifies testing and provides clear compliance results. The internal memory stores data and the HTAnalysis App allows for data transfer to tablets and smartphones.