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SN EN 61557-7:1997现行

Electrical Safety In Low Voltage Distribution Systems Up To 1 Kv A.c. And 1,5 Kv D.c. - Equipment For Testing, Measuring Or Monitoring Of Protective Measures - Part 7: Phase Sequence

出版：Swiss Standards

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基本信息

标准编号： SN EN 61557-7:1997

发布时间：1997/3/1 0:00:00

标准类别：Standard

出版单位：Swiss Standards

标准页数：0

标准简介

Defines the requirements for measurement of equipment applied to testing the phase sequence in three-phase distribution systems. The phase sequence may be indicated by mechanical, visual and/or audible means. Not applicable to ancillary measuring equipment for other quantities, such as voltage testers consisting of an additional phase sequence indicator. Not applicable to monitoring relays.

等同采用的国际标准

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

NF EN 61557-7:2007 - Identical

NBN EN 61557-7:2007 - Identical

IEC 61557-7 Ed. 2.0 - Identical

DIN EN 61557-7:2008 - Identical

NF EN 61557-7 : 2007 - Identical

DIN EN 61557-7 : 2008 - Identical

NBN EN 61557-7 : 2007 - Identical

IEC 61557-7 : 2.0 - Identical

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

EN 61557-7 : 2007 - Identical