HT Multifunction Installation Tester COMBI 420 is a 17th Edition Multifunction Installation with single-phase power quality measurement.
- Continuity test with 200mA.
- Insulation with 50, 100, 250, 500, 1000VDC.
- Trip out the time of RCDs type AC, A Standard, and Selective.
- Trip out a current of RCDs type AC, A Standard, and Selective.
- Loop Impedance P-P, P-N, P-PE.
- Loop Impedance with high accuracy (with IMP57 optional accessory).
- Prospective short circuit current.
- Contact voltage.
- Global Earth Resistance without RCD tripping.
- Phase sequence indication.
- AUTO function (Ra + RCDtest + Insulation) on plug.
- AC TRMS voltage and current.
- Active, Reactive, Apparent power and power factor.