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IEC 61557-7

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

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Organization: IEC
Publication Date: 1 July 2019
Status: active
Page Count: 32
ICS Code (Power transmission and distribution networks in general): 29.240.01
ICS Code (Measurement of electrical and magnetic quantities): 17.220.20
ICS Code (Electrical insulation in general): 29.080.01
scope:

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 worldwide three-phase distribution systems are depicted in IEC 610101.

Document History

IEC 61557-7
July 1, 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
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...
January 1, 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
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...
February 1, 1997
Electrical Safety in Low Voltage Distribution Systems up to 1000 V a.c. and 1500 V d.c. - Equipment for Testiong, Measuring or Monitoring of Protective Measures - Part 7: Phase Sequence
A description is not available for this item.

References

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