Cover DIN EN IEC 61557-3 VDE 0413-3:2022-12
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DIN EN IEC 61557-3 VDE 0413-3:2022-12

Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC – Equipment for testing, measuring or monitoring of protective measures

Part 3: Loop impedance

(IEC 61557-3:2019); German version EN IEC 61557-3:2022
Class/Status: Standard, valid
Released: 2022-12
VDE Art. No.: 0400564

This part of IEC 61557 specifies the requirements applicable to equipment for measuring the loop impedance between a line conductor and the protective conductor or between a line conductor and neutral or between two line conductors by using the voltage drop when the circuit under test is loaded.