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Overview IEC 61557-1:2007 is an international standard that specifies the general requirements for equipment used in testing, measuring, or monitoring protective measures in low voltage electrical di…
Overview IEC 61557-12:2018 - Electrical safety in low voltage distribution systems - Part 12 specifies requirements for power metering and monitoring devices (PMD) used in low-voltage distribution sy…
Overview IEC 61557-1:2019 - "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 1: Ge…