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IEC 61557-7 Ed. 1.0 b:1997

M00001287

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IEC 61557-7 Ed. 1.0 b:1997 [ Withdrawn ] Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective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

standard by International Electrotechnical Commission, 02/28/1997

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Specifies requirements for measuring equipment applied to testing th e phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible.

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Edition: 1.0 Published: 02/28/1997 Number of Pages: 15 File Size: 1 file , 85 KB