NF C66-309*NF EN 61109:2009 架空线路用绝缘子 标称电压大于1000V的交流系统用用复合悬挂式绝缘子和耐张绝缘子 定义、试验方法和验收标准
Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria