DS DS/EN 62054-21
DS DSEN 62054-21 2004-DEC-03 Electrcty meterng ac - Tarff and load control -- Part 21 Partcular requrements for tme swtches
Cart
(empty)
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