Handlevagon 0
Standard

NEK IEC 61557-7:2007

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NEK IEC 61557-7:2019+A1:2023 CSV

Forhåndsvisning

Rettelser og tillegg kjøpes separat.

Språk
Tjenester

Omfang

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.

Dokumentinformasjon

  • Standard fra NEK
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 2.0
  • Versjon: 1
  • Varetype: NAT
  • Products.Specs.pages
  • ICS 17.220.20
  • ICS 29.080.01
  • ICS 29.240.01
  • National Committee NEK/NK85

Produktrelasjon