The failures about "δ" disconnection and middle electromagnetic unit of capacitor voltage transformer encountered in operation is described

the cause and location of such failure is checked through analyzing abnormal phenomena inhibited in the failure of the equipment and also by way of online monitoring

infrared temperature measurement

electrical test and disassembly examination.Finally

the cause and location of such failure is correctly found throughout comprehensive analysis and judgement

these two different types of failures are sucessfully resolved and the corresponding improvement measures are proposed: in case of failure treatment various detection methods and measures shall be used comprehensively to fix the cause and location

the maintenance work be scientifically and reasonably instructed.