DXE-490CB总线插头
与低压电机相比，高压电机线圈制作非常复杂，高压电机定子绕组会按照不同的额定电压选择不同的电磁线，线圈制作中会在线圈直线边及伸出槽口位置包扎防电晕材料，也就是我们说的高、低阻带，其目的在于防止电机运行过程中电晕的产生。
电晕的产生及其危害
电晕的产生是因为不平滑的导体产生不均匀的电场，在不均匀的电场周围,曲率半径小的电极附近,当电压升高到一定值时，由于空气游离就会发生放电，形成电晕。
因为在电晕的外围电场很弱，不发生碰撞游离，电晕外围带电粒子基本都是电离子，这些离子便形成了电晕放电电流。简单地说，曲率半径小的导体电极对空气放电，便产生了电晕。
高压电机定子绕组在通风槽口及直线出槽口处、绕组端部电场集中，当局部位置场强达到一定数值时，气体发生局部电离，在电离处出现蓝色荧光,这即是电晕现象。
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