IEC 62052-21:2004 specifies general requirements for the type test of newly manufactured indoor tariff and load control equipment, like electronic ripple control receivers and time switches that are used to control electrical loads, multi-tariff registers and maximum demand indicator devices. This bilingual version (2016-07) corresponds to monolingual version published in 2004-05.
Specifies requirements for the type test of indoor self-contained static ripple control receivers for the reception and interpretation of pulses of a single audio frequency superimposed on the voltage of the electricity distribution network and for the execution of the corresponding switching operations. Requirements for constructional details internal to the receivers are not specified.
Specifies requirements for the type test of indoor self-contained time switches, which are used to control electrical loads, multi-tariff registers and maximum demand devices. Does not apply to time switches operated by remote control or by radio-frequency.
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