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UNE EN IEC 61557-7:2022
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.)
Seguridad eléctrica en redes de distribución de baja tensión hasta 1 000 V c.a. y 1 500 V c.c.. Equipos para ensayo, medida o vigilancia de las medidas de protección. Parte 7: Secuencia de fases. (Ratificada por la Asociación Española de Normalización en julio de 2022.)
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| Standard number: | UNE EN IEC 61557-7:2022 |
| Pages: | 23 |
| Released: | 2022-07-01 |
| Status: | Standard |
DESCRIPTION
UNE EN IEC 61557-7:2022
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.