来源：http://www. 发布时间：2019-06-19 浏览：次
当电动机发作毛病后，检修人员应和医生看病一样，首先要理解细致的“病情” 。即向设备操作人员或用户理解设备运用状况、设备的病历和毛病发作的全过程 。
When the motor breaks down, the maintenance personnel should first understand the meticulous "condition" as the doctor sees the doctor. That is to understand the whole process of equipment operation status, equipment medical record and fault occurrence to equipment operators or users.
1. Looking at the scene
依据所问到的状况，认真查看设备外部情况或运转工况 。如电机的外形、颜色有无异常 。
According to the situation asked, carefully check the external conditions or operating conditions of the equipment. If the shape and color of the motor are abnormal.
(2) Look at the materials
必需认真查阅与产生毛病有关的电机接线图，剖析一下曾经呈现的毛病与控制线路中的哪一局部有关，产生了什么缺点才干有所述现象 。接着，在剖析决议检查那些中央，逐渐查下去就能找出毛病所在了 。
It is necessary to carefully consult the wiring diagram of the motor related to the faults, analyze which part of the control circuit is related to the faults that have appeared before, and what shortcomings have been produced in order to have the phenomena mentioned above. Then, in the analysis of the resolution to examine those central authorities, gradually check down to find out where the fault is.
The noise of a motor running with illness usually changes, and the difference between noise and normal equipment operation can often be distinguished by listening carefully. For example, the factors affecting the sound of motors are:
①温度 。电动机有些响声是随着温度的升高而呈现或加强的，又有些声响却随着温度的升高而削弱或消逝 。
Temperature. Some of the noise of the motor appears or strengthens with the increase of temperature, while others weaken or disappear with the increase of temperature.
②负荷 。负荷对声响是有很大影响的，响声随着负荷的增大而加强，这是声响的普通规律 。
Load. Load has a great influence on sound. Sound increases with the increase of load, which is the general rule of sound.
③光滑 。不管什么响声，当光滑条件不佳时，普通都响得严重 。
(3) Smooth. No matter what noise, when the smooth condition is not good, it usually sounds seriously.
④听诊用具 。可用螺丝刀、金属棍、细金属管等，用听诊用具触到测试点，响声变大，以利诊断 。用听诊用具直接触在发响声部位听诊，叫做“实听”，用耳朵隔开一段间隔听诊，叫做“虚听’,两种办法要配合运用 。
(4) Stethoscope. It can use screwdriver, metal rod, thin metal tube, etc. to touch the test point with stethoscope, and the sound becomes louder for diagnosis. Auscultation with stethoscope directly touching the noisy part is called "real listening" and auscultation with ears separated by a certain interval is called "false hearing". The two methods should be used together.
4. Nose Smell
应用人的嗅觉，依据电机产生的气息判别毛病 。如过热、短路、击穿毛病，则有可能闻到烧焦味 。
Applying human's sense of smell to distinguish faults according to the breath produced by the motor. If there are overheating, short circuit and breakdown problems, it is possible to smell burning.
5. Hand touch
用手触摸设备的有关部位，依据温度和震动判别毛病 。实践操作中还应留意恪守有关平安规程和控制设备特性，控制摸（触）的办法和技巧，该摸的摸，不能摸的切不能乱摸 。手摸用 力要恰当，以免危及人身平安和损坏设备 。
Touch the relevant parts of the equipment by hand and distinguish faults according to temperature and vibration. In practice, we should also pay attention to abide by safety regulations and control equipment characteristics, control touch methods and skills, touch touch, touch can not touch anything can not be confused. Hands should be properly touched so as not to endanger personal safety and damage equipment.
用仪表仪器对电机停止检查 。依据仪表丈量某些电参数的大小，经与正常数据比照后，来肯定毛病缘由和部位 。
Stop checking the motor with instrumentation. According to the size of some electrical parameters measured by the instrument and compared with the normal data, the cause and location of the fault can be confirmed.
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