
ELECTRICITY METERING EQUIPMENT (A.C.) - PARTICULAR REQUIREMENTS - PART 21: STATIC METERS FOR ACTIVE ENERGY (CLASSES 1 AND 2)
出版:Polish Committee for Standardization

專家解讀視頻
IEC 62053-21:2003+AMD1:2016 CSV - Identical
IEC 62053-21:2003+AMD1:2016 CSV - Identical
EN 62053-21 : 2003 AMD 1/COR 18 - Identical