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New Reduced price! IEC 61557-3 Ed. 1.0 b:1997 View larger

IEC 61557-3 Ed. 1.0 b:1997

M00001027

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IEC 61557-3 Ed. 1.0 b:1997 [ Withdrawn ] Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective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 - Part 3: Loop impedance

standard by International Electrotechnical Commission, 02/14/1997

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Specifies requirements for equipment for measuring the loop impedance between a phase conductor and the protective conductor or between a phase conductor and neutral or between two phase conductors by using the voltage drop when the circuit under test is loaded.