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发表于 2022-10-23 19:09:22
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显示全部楼层
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IP:- 中国山东威海
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*由于操作原因出现合闸失败或并车后跳闸者,判为不及格。
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| | 检查灯头连接线,灯芯线是否碰壳,有无连接线绝缘破损而破壳 | |
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3.3.1.1.1使用万用表测量电阻和交(直)流电压
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3.3.1.1.2用万用表进行二极管极性判别与性能测量
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3.3.1.1.3用万用表进行晶体管性能测量与极性判别
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3.3.2.1测试、调整压力继电器(或温度继电器)设定值与幅差值
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3.3.5.1根据线路图(电器控制箱),指出各元器件在控制箱内的实际位置
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3.3.5.2根据故障现象判断故障性质和故障可能存在的环节
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| | | | | 根据线路图指定任意2个元器件,在电动机控制系统中找出实际位置,每个10分
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电源供电正常,电源指示灯亮,按下启动按钮,系统无反应,电机不启动运行
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三相电源供电正常,电源指示灯不亮,且系统无反应,电机不能运行
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3.3.7.3清洁电机、检查零部件,添加轴承润滑脂 |
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提高电机绝缘的方法,可任选:烘箱干燥、热风干燥、灯泡干燥、电流干燥、铁损干燥等方
法 | | | | |
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3.3.5.3运用断电与带电查线相结合寻找故障点,并排查故障 |
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运用断电与带电查线相结合寻找故障点,并排除故障。
故障设置为下列之一 | | | | |
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| ③停止按钮开关
断路 ④变压器原边开路
⑤变压器副边开路 |
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