BS EN 62054-21:2004+A1:2017

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Electricity metering (AC). Tariff and load control. Particular requirements for time switches|Dials, Time switches, Sampling methods, Testing conditions, Electric power systems, Electric control equipment, Rated frequencies, Test equipment, Type testing, Accuracy, Breaking capacity, Electrical measurement, Switchgear, Electricity supply meters, Marking, Switches, Acceptance (approval), Electric load, Electric contacts, Cases, Rated voltage, Control switches

186 GBP