BS EN 61557-7:2022+A1:2023 | British Standards

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17.220.20 Measurement of electrical and magnetic quantities

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 Phase sequence

BS EN 61557-7:2022+A1:2023

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 Phase sequence


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