Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic or glass insulator units for a.c. systems - Characteristics of insulator units of the cap and pin type
标称电压1000v以上架空线路用绝缘子交流系统用陶瓷或玻璃绝缘子元件帽销式绝缘子元件特性
Applies to string insulator units of the cap and pin type with
insulating parts of ceramic material or glass, intended for a.c.
overhead lines with a nominal voltage greater than 1 000 V and a
frequency not greater than 100 Hz and to insulators of similar
design used in substations.