Regulations for insulators for overhead power lines, overhead equipment and telecommunication lines; part 2: Regulations for insulators for high-tension overhead lines and overhead equipment up to 1000 V as well as telecommunication overhead lines
架空电力线路、架空设备和通信线路用绝缘子的规定;第2部分:1000V及以下高压架空线路和架空设备以及通信架空线路用绝缘子的规定