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¥ 价格面议
¥ 价格面议
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3.2.4质量标准
3.2.4.1电机定子
a.基础辊定位销无裂纹、无弯曲,安装紧固;定子硅钢片紧固、无油垢,通风孔无堵塞;
b.线圈绝缘漆完好无裂纹干净无油垢,线圈排列整齐,绑线垫片无断裂、槽楔应压紧线圈无松动;
c.有焊接处要求焊透、焊牢、外观无尖端或毛刺;
d.测温装置埋入紧固,测温连接导线安装应安全可靠,接触良好;
e.定子线圈各项试验,应符合试验标准;
f.外壳接地电阻不大于4Ω。
3.2.4.2电机转子
a.转子清洁无油垢,紧固无松动,通风孔无堵塞;
b.各部连接螺丝紧固无松动;
c.起动铜环无开焊裂纹,起动绕组连接紧固;
d.转子绝缘电阻用500V兆殴表测定,应在0.5MΩ以上。
3.3试运
3.3.1试运时间
3.3.1.1电动机空载运行一般为2h。
3.3.1.2电动机负载运行,按***可能负荷进行8h试运行。
3.3.2试运行中的检查项目与标准。
3.3.2.1电动机试运行前应进行检查,符合以下要求时方可启动。
a.启动前的一切准备工作必须具备安全技术条件,按大修试车方案逐项检查实施;