有一款直发器它是UL240V 额定电压,规格书要求Minimum spacing between conductors of opposite polarity or between un-insulated conductors and dead metal to be 2.0mm. Minimum spacing between un-insulated live parts and plastic housing to be 8.0 mm.请问是怎样判定?
你所给的规格书是美规的要求是没有基本绝缘和加强绝缘这一说法的。L和N就是conductors of opposite polarity 。如果产品外壳
是plastic housing 带电体到外壳就是8mm。并且在美规中电气间隙是说spacing through air,爬电距离是说Spacing over surface.