Machine tool equipment electrical troubleshooting - test method with further narrowing the scope of the fault

The appearance inspection found no fault point,can according to the fault phenomenon,combined with the circuit diagram analysis of the cause of the problem,in expanding the scope of the fault,damage under the premise of electrical and mechanical equipment,direct current experiments,or remove electricity load test,in order to distinguish the fault may be in electrical parts and machinery,and other parts;electrical motor Is on the motor and control equipment;Is in the main circuit and control circuit such as contactors and motor movements,the fault in the main circuit;If contact not suck,fault in the control circuit.Usually check control circuit,particular way is:one button only or all kinds of switch operation,circuit in the contactor,relay will take place according to the order of the work.If,in turn,moves to a asynchronous motor certain electrical components,found that do not conform to the requirements,both show that the electrical components or the relevant circuit has a problem.In this circuit,item by item analysis and check again,usually can find fault.

To control circuit troubleshooting back to normal again after turn on the main circuit,check the main circuit of the control effect,to observe the performance of the main www.facebook.com/dongfeng.motor circuit with and without exception,etc.Seven,with measurement method to determine the fault point Measurement method is used to accurately determine the fault point in maintenance electrician work an effective inspection method.Mainly through to the power circuit for electric or related parameters such as voltage,resistance and current measurements,such as to judge the stand or fall of electrical components,equipment insulation situation as well as the on-off of the line.When using the measurement single phase electric motor method of check point of failure,make sure all kinds of measuring tools and instruments in good condition,used correctly,but also pay attention to prevent induction,the influence of loop current and other parallel branch,lest make wrong judgment.