Home / Standards / GB/T 25309-2010 GB/T 25309-2010 Active High-voltage direct current transfer switches 高压直流转换开关 Standard Type GBT ICS 29.130.10 CCS K43 Status 现行 Issue Date 2010-11-10 Implementation 2011-05-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A