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About This Item
Full Description
This part of IEC 61557 specifies the requirements applicable to equipment for measuring the loop impedance between a line conductor and protective conductor; between a line conductor and neutral; or between two line conductors by using the voltage drop when the circuit under test is loaded.
All current amendments available at time of purchase are included with the purchase of this document.
Document History
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BS EN IEC 61557-3:2022
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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- Most Recent
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BS EN 61557-3:2007
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures-Loop impedance- Historical Version
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BS EN 61557-3:1997
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring ormonitoring of protective measures-Loop impedance- Historical Version