Many customers have encountered problems with sulfur hexafluoride circuit breakers when using sulfur hexafluoride gas.Today,sulfur hexafluoride manufacturers will take you to understand.

　　(1)Sulfur hexafluoride gas moisture value of SF6 circuit breaker exceeds the standard.Sulfur hexafluoride manufacturers suggest that three methods and measures can be generally taken to deal with:①vacuum,filling high-purity nitrogen,dry gas SF6 body;②external adsorption tank;③Disintegration overhaul.

　　(2)When frequent alarms or locking signals occur in part of SF6 circuit breaker after a period of operation(usually about once every 10 days),it indicates that the annual leakage rate of SF6 circuit breaker is far more than l%.In order to shorten the outage time in maintenance,sulfur hexafluoride manufacturers generally use qualified spare phase(column)to replace the leakage phase(column)in operation,and use other non-outage time to deal with the leakage phase(column).

　　(3)the closing resistance switching mechanism of 500kV circuit breaker fails,which can not effectively improve the input.The main reason for this is that the reliability of the cutting mechanism is not high.

　　(4)Frequent suppression by operating mechanism.The oil pump starts frequently,and there is no leakage outside the inspection mechanism,which is mainly reflected in the obvious leakage inside the valve system.When handling,the oil pressure can be increased to the rated pressure,cut off the power supply of the oil pump,drain the oil in the tank,open the oil tank cover,and carefully observe where the leakage.After finding out the cause,the oil pressure will be released to zero,and the inspection will be carried out in a targeted way.In addition,the hydraulic fluid needs to be filtered to reduce the impact of impurities.

　　(5)In the debugging process of circuit breaker,the time and periodicity of opening and closing do not meet the requirements.It is mainly realized by adjusting and closing the electromagnet gap and the oil supply and discharge valve.

　　(6)Low nitrogen pressure or oil intake in the accumulator.Operating personnel in the process of inspection more intuitive phenomenon is the oil pressure too low or too high phenomenon.Processing method is to energy storage barrel after sulfur hexafluoride gas is put inside,inside the piston sealing ring,carefully check the seal lip and simplified the lining,the damage of the sealing ring should be replaced,to have a bit of hair are compared.in addition,the available sand bar in a small circular grinding,until the macro point of view so far no hair along the axial trace,the need for serious hair replacement.