IEC 62054-21 Ed. 1.0 en:2004

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Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements for time switches

Specifies particular requirements for the type test of newly manufactured indoor time switches with operation reserve that are used to control electrical loads, multi-tariff registers and maximum demand devices of electricity metering equipment

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IEC 62054-21 Ed. 1.0 en:2004

Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements for time switches

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