Home / Standards / GB 13028-1991 GB 13028-1991 Abolished Isolating transformers and safetyisolating transformers--Requirements 隔离变压器和安全隔离变压器 技术要求 Standard Type GB ICS 29.180 CCS K41 Status 废止 Issue Date 1991-07-15 Implementation 1992-04-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A