NF EN IEC 61557-7:2022
Current
Current
The latest, up-to-date edition.
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
Available format(s)
Hardcopy
Language(s)
English - French
Published date
05-01-2022
Publisher
This part ofIEC 61557specifies the requirements applicable to measuringequipmentfortestingthe phase sequence in three-phase distribution systems.
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