Home / Standards / GB/T 20838-2007 GB/T 20838-2007 Active Specification and technical requirements of oil-immersed convertor transformers for HVDC applications 高压直流输电用油浸式换流变压器技术参数和要求 Standard Type GBT ICS 29.180 CCS K41 Status 现行 Issue Date 2007-01-16 Implementation 2007-08-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A