中文版
?。?）the expansion of the capacitor shell or oil leakage.
?。?）the rupture of the cannula and the flashover of the flashover.
?。?）the internal sound of the capacitor is abnormal.
?。?）the temperature rise of the shell is higher than 55 degree Celsius.
2、the fault treatment of capacitor
?。?）、when the capacitor exploded and ignited, it immediately disconnected the power and extinguish it with sand and dry extinguishers.
?。?）、when the fuse of the capacitor is blown off, it should be reported to the dispatcher, and the circuit breaker of the capacitor will be pulled again after obtaining the consent. When the power is cut off, the external inspection is carried out, such as whether there is no flashover trace outside the casing, the shell is deformed, the leakage and the grounding device have short circuit phenomenon and so on, and shake the insulation resistance value between the poles and the ground. If no fault is found, it can be changed after insurance. If the fuse is still blown after power transmission, the fault capacitor should be pulled out, and the remaining part will be sent back to power. If the fuse is broken, the breaker will also be tripped. The above inspection must be completed and replaced after insurance.
?。?）、the circuit breakage of the capacitor, while the shunt insurance is not broken, it should first discharge the capacitor for three minutes and then check the electric cable and the capacitor of the current transformer of the circuit breaker. If no exception is found, it may be due to external fault bus voltage fluctuation. After examination, it can be put into trial; otherwise, a comprehensive protection test should be further carried out. Through the above inspection and test, if the cause can not be found, then the capacitor should be tested gradually according to the system. No trial can be made until the reason is unidentified.
3、Deal with the safety of the fault capacitor. The fault capacitor should be disconnected from the breaker of the capacitor, and the isolating switch on both sides of the circuit breaker should be opened. After discharge by the discharge resistance, the discharge transformer or the discharge voltage transformer, the grounding end of the ground should be fixed because some of the residual charge can not be put out for a moment, and then the capacitor is discharged to the capacitor many times until there is no spark and discharge sound, then the earthing card is fixed. Because the fault capacitor may have bad lead contact, internal breakage or insurance fuse and so on, there may still be part of the charge not put out, so the maintenance personnel should wear insulating gloves before contact the fault capacitor. It should be short connected to the two poles of the fault capacitor and should be discharged separately.