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BS EN 61557-6:1998

Заменен
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring ormonitoring of protective measures, Residual current devices (RCD) in TT, TN and IT systems — 14 стр.
BS EN 61557-6:1998
Заменен
BS EN 61557-6:2007
Действует