Faults exclusion is an important work of maintenance personnel,to eliminate the fault,must know the cause of the failure,more important is can theoretically analysis,solve the fault occurred,should have certain professional theory knowledge,to master the methods of troubleshooting.(a) gradual deduction:if there is a short circuit fault occurs,can be gradually removed part of the circuit to determine the scope of the fault and fault point.(2) adjust the parameter method:in some cases,failure,circuit components is not necessarily bad,line contact is also good,just because of some physical quantity adjustment may be inappropriate or run after a long time,likely due to external factors causing system parameter electrical motor changes or not automatic correction system value,resulting in system cannot work normally,at this time should be adjusted according to the actual circumstances of the equipment.
(3) the principle analysis:according to the principle diagram of the control system,by tracking that is associated with fault signals,the analysis judgment,find out the fault point,and find out the cause of permanent magnet generator the problem.Using this method requires maintenance personnel and unit of the whole system working principle of the circuit have a clear understanding.(11) comparison,analysis,judgement method:it is according to the working principle of the system for controlling the action program and the logical relationship between them,in combination with failure phenomenon,comparison,analysis,and judgment,and reduce the measurement and inspection link,and quickly judge fault range.Above several kinds of commonly used method,can be used alone,also can mix,met the actual electrical fault should be combined with the specific circumstances and flexible application.
Electrical fault phenomenon is varied,the same type of failure may have different failure phenomenon,no similar failure may be the same failure phenomenon www.facebook.com/dongfeng.motor of identity and diversity,complexity to malfunction.Fault phenomena,however,is to find the basic foundation of electrical failure,and is to find the starting point of electrical fault,so be careful observation of fault phenomenon analysis,find out the fault phenomenon in the main,the most typical aspects,find out the failure time,location,environment,etc.A lot of electrical failure,must rely on the professional theory knowledge to really understand have a good grasp of.Electrical maintenance personnel and other workers maintenance personnel in comparison,more theoretical and sometimes no theory to guide a lot of work,it's impossible to be so to have certain professional theoretical high efficiency electric motor knowledge.Maintenance personnel in order to better improve their ability to solve practical problems effectively in the practical work and maintenance level,should constantly strengthen their own professional theoretical knowledge learning and improve the level of operating skills,when electrical fault occurs,can accurately locate the fault,and troubleshoot electrical equipment can steadily run normally.
