
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Performance measuring and monitoring devices (PMD)
出版:British Standards Institution

专家解读视频
To be read in conjunction with BS EN 61557-1
© British Standards Institution 2013
IEC 61557-12 : 1.0 - Identical
EN 61557-12 : 2008 - Identical
IEC 61557-12 : 1.0 - Identical
IEC 61557-12 Ed. 1.0 - Identical