6ES7321-1BL00-0AA0 开入模块(32点
待评绝缘结构的试验样品应与线圈产品制造商的设计、材料和结构一致,匝间绝缘鉴定的试验方法为:
将工频试验电压1.5Uturn施加在试样的两个导体之间。如果未发生局部放电,无需进行鉴别试验。如果局部放电存在,将进行电老化试验;其中Uturn为峰-峰电压,若Uturn未知,则Uturn=突变电压/匝数。
在试品两个导体之间施加重复冲击电压或正弦电压直到出现电击穿。建议电压值至少为3个(4.5Uturn、4.0Uturn 、3.5Uturn),每个试验电压下少需5个试验样品。
其中匝间绝缘鉴定试验合格准则为:若1.5Uturn下5个测试样品均未发生局部放电,则匝间绝缘不需要进行鉴别,即合格。若1.5Uturn下5个测试样品中有发生局部放电,合格准则与上述主绝缘类似。
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