Home / Standards / GB 1971 GB 1971 Abolished Terminal markings and direction of rotation ofrotating electrical machines 电机线端标志与旋转方向 Standard Type GB ICS 29.160 CCS K20 Status 废止 Issue Date 1980-05-23 Implementation 1980-08-01 Responsible Dept 中国电器工业协会 Drafting Unit 中国电器工业协会