IEC 61557-7 Ed. 3.1 b:2023 ✓ Most Recent

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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 CONSOLIDATED EDITION

standard by International Electrotechnical Commission , 08/01/2023

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Full Description

This part of IEC 61557 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible.

This document does not apply to additional measurements for other quantities. It does not apply to monitoring relays.

NOTE Common  three-phase distribution systems are depicted in IEC 610101: 2010, Annex I and
IEC 61010-1:2010/AMD1:2016, Annex I.

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Document History

  1. IEC 61557-7 Ed. 3.1 b:2023

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    viewing


    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 CONSOLIDATED EDITION

    • Most Recent

  2. IEC 61557-7 Ed. 3.0 b:2019


    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

    • Historical Version

  3. IEC 61557-7 Ed. 2.0 b:2007


    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

    • Historical Version

  4. IEC 61557-7 Ed. 1.0 b:1997


    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 - Part 7: Phase sequence

    • Historical Version

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Product Details

Edition:

3.1

Published:

08/01/2023

ISBN(s):

9782832274538

Number of Pages:

66

File Size:

1 file

Note:

This product is restricted and cannot be purchased in the following countries Ukraine, Russia, Belarus