Home / Standards / GB/T 22674-2008 GB/T 22674-2008 Active Bushings for d.c. application 直流系统用套管 Standard Type GBT ICS 29.080.20 CCS K48 Status 现行 Issue Date 2008-12-31 Implementation 2009-10-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A