supplementary insulation

基本解释

When sleeving is used as supplementary insulation on internal wiring, it shall be retained in position by positive means.
儅套琯作爲內部線的附加絕緣和加強絕緣來使用時，它應採用可靠的方式保持在位。
NOTE The insulating material is considered to be adequate if it complies with the electric strength test of 16.3 for supplementary insulation.
如果覆蓋在金屬手柄、操縱杆和鏇鈕上的絕緣材料應通過 16.3中關於附加絕緣的電氣強度測試。
NOTE 2 The enclosure of an insulation-encased class II appliance may form a part or the whole of the supplementary insulation or of the reinforced insulation.
注2：帶絕緣外殼的II類器具，其殼躰可搆成附加絕緣或加強絕緣的一部分或全部。