SSH EN 61557-3:2007

Siguria elektrike në sistemet shpërndarës me voltazh të ulët deri në 1000 V rrymë alternative dhe 1500 V rrymë të vazhduar — Pajisja për provën, matjen ose monitorimin e masave mbrojtëse — Pjesa 3: Rezistenca e plotë e qarkut të mbyllur

Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance

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. 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.

Related directives

Directives related to this standards.