Home / Standards / GB/T 4109-2022 GB/T 4109-2022 Active Insulated bushings for alternating voltages above 1 000 V 交流电压高于1000V的绝缘套管 Standard Type GBT ICS 29.080.20 CCS K48 Status 现行 Issue Date 2022-03-09 Implementation 2022-10-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A