是为了在基本绝缘损坏的情况下防止触电而在基本绝缘之外使用的独立绝缘。
当套管作为内部线的附加绝缘和加强绝缘来使用时,它应采用可靠的方式保持在位。
When sleeving is used as supplementary insulation on internal wiring, it shall be retained in position by positive means.
注2:带绝缘外壳的II类器具,其壳体可构成附加绝缘或加强绝缘的一部分或全部。
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.
太阳能连接软管可以简便地从温度传感器连接到控制器,他除了软管和绝缘层外,还附加了一个电缆。
Also to ease making the connection from collector temperature sensor to control unit, a double-tipped silicon cable is attached besides the hose and insulation.
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