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International Electrotechnical Commission, 08/01/2023
Publisher: IEC
File Format: PDF
$79.00$158.00
Published:01/08/2023
Pages:66
File Size:1 file , 1.8 MB
Note:This product is unavailable in Ukraine, Russia, Belarus
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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