UNE-EN IEC 61557-7:2022
Current
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 (Endorsed by Asociación Española de Normalización in July of 2022.)
Hardcopy , PDF
07-01-2022
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 additional measuring equipment for other quantities. It does not apply to monitoring relays.
| Committee |
CTN 82/SC 4
|
| DocumentType |
Standard
|
| Pages |
23
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Standards | Relationship |
| IEC 61557-7:2019 | Identical |
| EN IEC 61557-7:2022 | Identical |
| BS EN IEC 61557-7:2022 | Equivalent |
| DIN EN IEC 61557-7:2022-12 | Equivalent |
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