GSO IEC 61557-7:2012
IEC 61557-7:2007
Gulf Standard
Current Edition
·
Approved on
09 August 2012
ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1000 V a.c. AND 1500 V d.c. – EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES – Part 7: Phase sequence
GSO IEC 61557-7:2012 Files
English
17 Pages
Current Edition
Reference Language
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GSO IEC 61557-7:2012 Scope
This part of GSO 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 GSO IEC 61557 does not apply to ancillary measuring equipment for other quantities, for example voltage testers comprising an additional phase sequence indicator. It does not apply to monitoring relays.
NOTE Phase lamps are not considered to be voltage testers.
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