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Normas BSI – AENOR
BS EN 61557-3:2007

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

Fecha:
2007-06-29 /Definitive
Comité:
PEL/85
Equivalencias internacionales:

EN 61557-3:2007

IEC 61557-3:2007

Relación con otras normas BSI:

Reemplaza a: BS EN 61557-3:1997

Resumen:
This part of IEC 61557 specifies the requirements applicable to 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. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision. The following changes were made with respect to the previous edition: a) definitions complemented; b) revision of some requirements; c) addition of information on operating instructions; d) addition of new influence quantities E9 and E10.
Keywords:
Low voltage, Electrical protection equipment, Safety devices, Type testing, Instructions for use, Electrical measuring instruments, Electrical safety, Electrical testing, Marking, Impedance measurement, Electric load, Low-voltage equipment
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