电阻测试法 ：

　　Resistance testing method:

　　利用万用表的电阻档测量电机、线路、触头等是否符合使用标称值以及是否通断。

　　Use the resistance range of a multimeter to measure whether the motor, circuit, contacts, etc. meet the nominal values and whether they are open or closed.

　　使用兆欧表测量相与相、相与地之间的绝缘电阻，确保绝缘性能良好。

　　Use a megohmmeter to measure the insulation resistance between phases and ground to ensure good insulation performance.

　　电压测试法 ：

　　Voltage testing method:

　　利用万用表测量电路中的电压值，包括电源电压、负载电压及开路电压，以判断电路是否正常。

　　Use a multimeter to measure the voltage values in the circuit, including power supply voltage, load voltage, and open circuit voltage, to determine if the circuit is functioning properly.

　　机械检测 ：

　　Mechanical inspection:

　　通过触摸电气设备外壳的振动和温度，粗略判断设备的运行工况是否正常。

　　Roughly determine whether the operating conditions of the equipment are normal by touching the vibration and temperature of the electrical equipment casing.

　　检查机械部件的安装牢固性、螺丝紧固情况以及外观，确保机械系统无故障。

　　Check the installation firmness, screw fastening, and appearance of mechanical components to ensure that the mechanical system is fault free.

　　静态与动态检测 ：

　　Static and dynamic detection:

　　静态检测：在设备不通电的情况下，检查外部部件如开关、按钮、插口及指示灯的工作情况。

　　Static detection: Check the working condition of external components such as switches, buttons, sockets, and indicator lights when the device is not powered on.

　　动态检测：在设备通电后，进行各项功能的调试和检查，观察是否有异常现象。

　　Dynamic detection: After the device is powered on, perform debugging and inspection of various functions, and observe whether there are any abnormal phenomena.

　　先简单后复杂 ：

　　Simple first, then complex:

　　先处理简单、直观、常见的故障，再处理复杂、难度较高的故障，以提高维修效率。

　　First deal with simple, intuitive, and common faults, and then deal with complex and difficult faults to improve maintenance efficiency.

　　先外部后内部 ：

　　First external, then internal:

　　先检查外部部件，如开关、按钮等，再拆卸内部设备进行检修，以减少不必要的拆卸。

　　First inspect external components such as switches, buttons, etc., and then disassemble internal equipment for maintenance to reduce unnecessary disassembly.

　　接地检查 ：

　　Grounding inspection:

　　检查主要元器件的接地情况，确保断路器、真空接触器、电容器、电抗器等设备的接地良好。

　　Check the grounding status of the main components to ensure good grounding of equipment such as circuit breakers, vacuum contactors, capacitors, and reactors.

　　元器件检查 ：

　　Component inspection:

　　检查各元器件的安装牢固性、螺丝紧固情况以及外观，确保无损坏或老化现象。

　　Check the installation firmness, screw fastening, and appearance of each component to ensure no damage or aging.

　　短路检查 ：

　　Short circuit inspection:

　　检查电路中是否存在短路现象，确保接线正确、无裸露导线。

　　Check for short circuits in the circuit, ensuring correct wiring and no exposed wires.

　　功能测试 ：

　　Functional testing:

　　按照图纸及说明书进行各项操作，行正常启停机操作，再观察各项故障保护动作是否正常。

　　Perform various operations according to the drawings and instructions, first perform normal start stop operations, and then observe whether various fault protection actions are normal.

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