防止受潮损伤，以免影响绝缘等级。
Prevented is affected with damp, the damage, in order to avoid influence insulation rank.
电机轴承采用绝缘结构，减小了轴电流对轴承的损伤，提高了轴承寿命。
Insulation structure for bearing, reduce the damage from shaft current and improve the life of bearing.
钢管口应先装上管螺母，以免穿线时损伤导线绝缘层。
At first, pipe bolts should be erected at the nozzle so as to prevent the insulation coat of the conductor from being damaged while wiring.
传统的焊接方法采用导电阻焊法，焊接效率低，易损伤铜排和绝缘层。
But the traditional welding method of brazen winding relies mainly on conduction heat, it is easy to damage the winding faces as well as less efficient.
经调查，大管径绝缘接头的缺陷主要表现在焊接高温对橡胶密封材料的损伤方面，这会使刚已经生产完成的绝缘接头变成废品，浪费资源。
According to the research the main question is that the high temperature of the welding make rubber seal O-ring spoiled, the insulating joint become waste product.
经调查，大管径绝缘接头的缺陷主要表现在焊接高温对橡胶密封材料的损伤方面，这会使刚已经生产完成的绝缘接头变成废品，浪费资源。
According to the research the main question is that the high temperature of the welding make rubber seal O-ring spoiled, the insulating joint become waste product.
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