DIN EN 60168-2001 额定电压超过1kV的系统用陶瓷材料或玻璃制室内和室外架空支承绝缘子试验
Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV (IEC 60168:1994 + A1:1997 + A2:2000); German version EN 60168:1994 + A1:1997 + A2:2000