Home / Standards / GB/T 4109-2008 GB/T 4109-2008 Abolished Insulated bushings for alternating voltages above 1 000V 交流电压高于1000V的绝缘套管 Standard Type GBT ICS 29.080.20 CCS K48 Status 废止 Issue Date 2008-06-30 Implementation 2009-04-01 Responsible Dept 中国电器工业协会 Drafting Unit 中国电器工业协会