Home / Standards / GB/T 20989-2007 GB/T 20989-2007 Abolished Determination of power losses in high-voltage direct current (HVDC) converter stations 高压直流换流站损耗的确定 Standard Type GBT ICS 29.200 CCS K46 Status 废止 Issue Date 2007-06-21 Implementation 2008-02-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A