1、 Resistance test method

电阻测试法是一种常用的测量方法。

Resistance test method is a common measurement method.

通常是指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的一种方法，或用兆欧表测量相与相、相与地之间的绝缘电阻等。测量时，注意选择所使用的量程与校对表的准确性，一般使用电阻法测量时通用做法是先选用低档，同时要注意被测线路是否有回路，并严禁带电测量。

It usually refers to a method of measuring whether the motor, line and contact meet the nominal value and whether they are on and off by using the resistance gear of multimeter, or measuring the insulation resistance between phase and phase, phase and ground by megger. When measuring, pay attention to the selection of the range used and the accuracy of the calibration table. Generally, when using the resistance method for measurement, the general practice is to select the low-grade first. At the same time, pay attention to whether the measured line has a circuit, and live measurement is strictly prohibited.

二、电压测试法

2、 Voltage test method

贵州高低压配电设备告诉你电压测试法是指利用万用表相应的电压档，测量电路中电压值的一种方法。

Guizhou high and low voltage distribution equipment tells you that the voltage test method refers to a method of measuring the voltage value in the circuit by using the corresponding voltage gear of the multimeter.

通常测量时，有时测量电源、负载的电压，有时也测量开路电压，以判断线路是否正常。测量时应注意表的档位，选择合适的量程，一般测量未知交流或开路电压时通常选用电压的高档，以确保不至于在高电压低量程下进行操作，以免把表损坏；同时测量直流时，要注意正负极性。

In general, sometimes the voltage of power supply and load is measured, and sometimes the open circuit voltage is measured to judge whether the line is normal. When measuring, pay attention to the gear of the meter and select the appropriate range. Generally, when measuring unknown AC or open circuit voltage, the highest gear of voltage is usually selected to ensure that it will not operate under high voltage and low range, so as to avoid damaging the meter; Pay attention to the positive and negative polarity when measuring DC at the same time.

三、电流测试法

3、 Current test method

贵州高低压配电设备告诉你电流测试法是通常测量线路中的电流是否符合正常值，以判断故障原因的一种方法。对弱电回路，常采用将电流表或万用表电流档串接在电路中进行测量；对强电回路，常采用钳形电流表检测。

Guizhou high and low voltage distribution equipment tells you that the current test method is usually a method to measure whether the current in the line meets the normal value to judge the cause of the fault. For weak current circuit, ammeter or multimeter current gear is often connected in series in the circuit for measurement; Clamp on ammeter is often used to detect strong current circuit.

四、仪器测试法

4、 Instrument test method

借助各种仪器仪表测量各种参数，如用示波器观察波形及参数的变化，以便分析故障的原因，多用于弱电线路中。

With the help of various instruments and meters to measure various parameters, such as observing the change of waveform and parameters with oscilloscope, so as to analyze the cause of fault, which is mostly used in weak current lines.

五、常规检查法

5、 Routine examination method

依靠人的感觉器官（如：有的电气设备在使用中有烧焦的糊味，打火、放电的现象等）并借助于～些简单的仪器（如：万用表）来寻找故障原因。这种方法在维修中常用，也是首先采用的。

Rely on people's sensory organs (such as burning smell, ignition and discharge of some electrical equipment in use) and with the help of ~ some simple instruments (such as multimeter) to find the cause of the fault. This method is the most commonly used and first used in maintenance.

六、更换原配件法

6、 Replacement of original parts

贵州高低压配电设备告诉你即在怀疑某个器件或电路板有故障，但不能确定，且有代用件时，可替换试验，看故障是否消失，恢复正常。

Guizhou high and low voltage power distribution equipment tells you that when you suspect that a device or circuit board is faulty, but you are not sure, and there are substitute parts, you can replace the test to see whether the fault disappears and returns to normal.

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