Home / Standards / GB 1390-1993 GB 1390-1993 Abolished Shackle insulators for high voltage overhead lines 高压线路蝶式绝缘子 Standard Type GB ICS 29.080.10 CCS K48 Status 废止 Issue Date 1993-07-17 Implementation 1994-02-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A