NF EN 62053-21 : 2003 AMD 1 2017现行
ELECTRICITY METERING EQUIPMENT (A.C.) - PARTICULAR REQUIREMENTS - PART 21: STATIC METERS FOR ACTIVE ENERGY (CLASSES 1 AND 2)
出版：Association Francaise de Normalisation
专家解读视频
Applies only to newly manufactured static watt-hour meters of accuracy classes 1 and 2, for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.
UNE EN 62053-21 : 2003 - Identical
IEC 62053-21:2003+AMD1:2016 CSV - Identical
I.S. EN 62053-21:2003 - Identical
IEC 62053-21:2003+AMD1:2016 CSV - Identical
I.S. EN 62053-21:2003 - Identical
UNE EN 62053-21 : 2003 - Identical
DIN EN 62053-21 : 2017 - Identical
EN 62053-21 : 2003 AMD 1/COR 18 - Identical
BS EN 62053-21 : 2003 - Identical
NBN EN 62053-21 : 2003 - Identical
DIN EN 62053-21 : 2017 - Identical
BS EN 62053-21 : 2003 - Identical
NBN EN 62053-21 : 2003 - Identical
