Cover DIN EN IEC 61557-11 VDE 0413-11:2022-12
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DIN EN IEC 61557-11 VDE 0413-11:2022-12

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 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT systems

(IEC 61557-11:2020); German version EN IEC 61557-11:2022
Class/Status: Standard, valid
Released: 2022-12
VDE Art. No.: 0400550

This part of IEC 61557 specifies the requirements for testing equipment applied to the testing of the effectiveness of residual current monitors (RCM), which are already installed in distribution systems. This test equipment can be used in any kind of network like a TN, TT or IT system. The test equipment may also be used for testing directionally discriminating RCMs in IT systems.