
Class 0.5, 1 and 2 alternating-current watthour meters
出版:British Standards Institution

专家解读视频
Gives type tests for measurement of electrical energy in the frequency range 45 to 65 Hz having a voltage across connection terminals not exceeding 600 V.
© British Standards Institution 2013
SS EN 60521:1995 - Identical
UNE EN 60521:1996 - Identical
I.S. EN 60521:1995 - Identical
NF EN 60521:1995 - Identical
NF EN 60521 : 1995 - Identical
SN EN 60521 : 1995 - Identical
NBN EN 60521 : 1995 - Identical
UNE EN 60521 : 96 CORR 99 - Identical
DIN EN 60521 : 1995 - Identical
I.S. EN 60521:1995 - Identical
IEC 60521 : 2.0 - Identical
EN 60521 : 95 CORR 97 - Identical
I.S. EN 60521:1995 - Identical
DIN EN 60521 : 1995 - Identical
SN EN 60521:1995 - Identical
DIN EN 60521 (1995-07) - Identical
IEC 60521 Ed. 2.0 - Identical