Where an intermediate metal part (for example, the magnetic core of the HF transformer) not connected to the enclosure is located between the input and output windings of the HF transformer, the insulation between the input and output windings via the intermediate metal part shall consist of double or reinforced insulation, and, for class II control gear, the insulation between the input windings and the enclosure and between the output windings and the enclosure via the intermediate metal part of the HF transformer shall consist of double or reinforced insulation. An intermediate part which is separated from one of the windings by double or reinforced insulation is considered as being connected to the other winding of the HF transformer. 请教以上两段话在实际运用中怎么理解(对应的19510.14中文版也读过,但还是没搞清楚) 最好能举个例子讲讲。 |