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

Standard No.

BS EN 61557-3:2007

Release Date

2007

Published By

British Standards Institution (BSI)

Latest

BS EN 61557-3:2007

Replace

04/30125185 DC-2004 BS EN 61557-3:1997

Scope

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.

BS EN 61557-3:2007 Referenced Document

• IEC 61557-1 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: General requirements*， 2019-07-26 Update

BS EN 61557-3:2007 history

• 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