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FBM214端子P0916BX
试验电压为交流、频率为50Hz及实际正弦波形。在出厂试验时,试验电压有效值为1260V(P2<1KW时)或1760V(P2≥1KW时);
在嵌线后进行试验时,试验电压的有效值1760V(P2<1KW)或2260V(P2≥1KW)。
定子绕组应能承受上述电压1min而不发生击穿。
绕组绝缘处理的质量检查
绕组的电气性能
绝缘漆的电气击穿强度为空气几十倍。绝缘处理后,绕组中的空气为绝缘漆所取代,提高了绕组的起始游离电压和其它电气性能;
绕组的耐潮性能
绕组浸渍后,绝缘漆充满绝缘材料的毛细管和缝隙,并在表面结成一层致密光滑的漆膜,使水分难以浸入绕组,从而显著提高绕组的耐潮性能。
绕组的导热和耐热性能
绝缘的的热导率比空气优良得多。绕组浸渍后,可显著改善其导热性能。同时,绝缘材料的老化速度变慢,耐热性能得到提高。
绕组的力学性能
绕组经浸渍后,导线与绝缘材料粘结成坚实的整体,提高绕组的力学性能,可有效地防止由于振动、电磁力和热胀冷缩引起的绝缘松动和磨损。
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