Home / Standards / GB/T 20840.99-2025 GB/T 20840.99-2025 Active Instrument transformers—Part 99:Glossary 互感器 第99部分:术语 Standard Type GBT ICS 29.180 CCS K41 Status 现行 Issue Date 2025-02-28 Implementation 2025-09-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A