NF EN IEC 61557-3:2022
Current
The latest, up-to-date edition.
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: Loopimpedance
Hardcopy
English - French
05-01-2022
This part ofIEC 61557specifies the requirements applicable toequipmentfor measuring the loop impedance between a line conductor and protective conductor; between a line conductor and neutral; or between two line conductors by using thevoltagedrop when the circuit undertestis loaded.
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