GB/T 20840.6-2017互感器第6部分:低功率互感器的补充通用技术要求国家标准
英文:Instrument transformers—Part 6:Additional general requirements for low-power instrument transformers GB/T 20840.6-201...
英文:Instrument transformers—Part 6:Additional general requirements for low-power instrument transformers GB/T 20840.6-201...