I.S. EN 62054-21:2004现行
Electricity Metering (a.c.) - Tariff And Load Control Part 21: Particular Requirements For Time Switches
出版：National Standards Authority of Ireland
专家解读视频
Describes 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.
Together with I.S. EN 62052-21 and I.S. EN 62054-11, supersedes
I.S. EN 61037 and I.S. EN 61038.
(02/2005)
NBN EN 62054-21:2005 - Identical
EN 62054-21:2004 - Identical
SS EN 62054-21 Ed. 1 (2005) - Identical
DIN EN 62054-21:2017 - Identical
DIN EN 62054-21:2005 - Identical
DIN EN 62054-21 : 2017 - Identical
NF EN 62054-21 : 2006 AMD 1 2017 - Identical
BS EN 62054-21 : 2004 - Identical
NBN EN 62054-21 : 2005 - Identical
UNE EN 62054-21 : 2005 - Identical
UNE EN 62054-21 : 2005 - Identical
NBN EN 62054-21 : 2005 - Identical
NF EN 62054-21 : 2006 AMD 1 2017 - Identical
DIN EN 62054-21 : 2017 - Identical
BS EN 62054-21 : 2004 - Identical
NF EN 62054-21:2006 - Identical
BS EN 62054-21:2004 - Identical
DIN EN 62054-21 (2005-06) - Identical
UNE EN 62054-21:2005 - Identical
IEC 62054-21 Ed. 1.0 - Identical
