当前位置： 首页 > 标准详情页

IEC 61557-7 Ed. 2.0现行

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 7: Phase sequence

出版：International Electrotechnical Committee

获取原文如何获取原文？问客服获取原文，即可享受本标准状态变更提醒服务！

专家解读视频

基本信息

标准编号： IEC 61557-7 Ed. 2.0

发布时间：2007/1/29 0:00:00

标准类别：Standard

出版单位：International Electrotechnical Committee

标准页数：17

标准简介

This part of IEC 61557 specifies the requirements for measuring equipment applied to testing the phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible. This part of IEC 61557 does not apply to ancillary measuring equipment for other quantities, for example voltage testers comprising an additional phase sequence indicator. It does not apply to monitoring relays. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a minor revision.

本标准替代的旧标准

IEC 61557-7 Ed. 1.0

等同采用的国际标准

OVE/ONORM EN 61557-7:2008 - Identical

VDE 0413-7:2008 - Identical

PN EN 61557-7:2007 - Identical

BS EN 61557-7:2007 - Identical

NEN EN IEC 61557-7:2007 - Identical

I.S. EN 61557-7:2007 - Identical

UNE EN 61557-7:2007 - Identical

SS EN 61557-7 Ed. 2 (2007) - Identical

SN EN 61557-7:1997 - Identical