DANSK DS/EN IEC 60305:2021 标称电压高于 1000 V 的架空线路绝缘子 交流系统的陶瓷或玻璃绝缘子单元 帽式和针式绝缘子单元的特性
Insulators for overhead lines with a nominal voltage above 1000 V – Ceramic or glass insulator units for AC systems – Characteristics of insulator units of the cap and pin type