阅读下一篇
IEC62271-1:2007 High-voltage switchgear and controlgear-Part 1High-voltage switchgear and controlgear-Part 1 Common specificationsThis part of IEC 62271 applies to a.c. switchgear and controlgear designed for indoor andoutdoor installation and for operation at service frequencies up to and including 60 Hz on
回帖成功
经验值 +10
全部回复(1 )
只看楼主 我来说两句 抢板凳