QY polyimide enameled wire, slot insulation, slot wedges, insulation casing, primer wire and impregnating varnish must be used, such as H-class insulation material.

Q Y聚酰亚胺漆包线，槽绝缘、槽楔、绝缘套管、引接线及浸渍漆等均需采用H级绝缘的材料。

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And replacement of stator windings is similar to an ordinary motor, but higher insulation levels, most of the use of H-class insulation.

定子绕组更换和普通电机是相似的，只是绝缘等级高一些，大多采用H级绝缘。

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