确定额定电压在交流1000V以上至2000V,直流1500V以上至3000V间设备的电气间隙、爬电距离的数值以及对固体绝缘要求的指南
Guidance for determination of clearances, creepage distances and requirements for solid insulation for equipment with a rated voltage above 1 000 V AC and 1 500 V DC, and up to 2 000 V AC and 3 000 V DC