GB/T 7253-2005 标称电压高于1000V的架空线路绝缘子 交流系统用瓷或玻璃绝缘子件 盘形悬式绝缘子件的特性 Insulators for overhead lines with a nominal voltage above 1 000 V—Ceramic or glass insulator units for a.c. systems—Charateristics of insulator units of the cap and pin type
Insulators for overhead lines with a nominal voltage above 1 000 V—Ceramic or glass insulator units for a.c. systems—Charateristics of insulator units of the cap and pin type