More than 110 kv transformer fault processing method

110 kv and above defective transformer.Treatment methods mainly include core inspection,repair,replace the seal leakage,oil change,vacuum drying,structure improvement,etc.For body slightly and can only deal with at the scene of be affected with damp be affected with damp,generally USES the vacuum hot oil circulation processing,after the hot oil into electrical motor the transformer,heat insulation,its internal moisture will evaporate,and filter oil machine from transformer top discharge,through continuous loop to achieve the purpose of drying. Using vacuum drying process be affected with www.facebook.com/guohong.trading damp be affected with damp,body,vacuum to remain above 750 MMHG column,after the body into the chamber,from low to high temperature to increase slowly.


When temperature 40 ℃ drying 48 h,48 h,to 60 ℃ drying to 75 ℃ in 48 h,finally to 95 ℃,the insulation resistance should detect every hour,when its value in 6 ~ 8 h remain unchanged or changed little,the vacuum drying.Practice has proved that the chamber upper and lower temperature regulation in 10 ℃,the best drying effect,should pay attention to is asynchronous motor in the process of drying to prevent seal heat aging,to them,and put an end and the secondary outlet end of the small porcelain set loose.On the oil storage tank sealing and sealing capsule quality is poorer,can be equipped with corrugated expansion method is used to change the sealing performance; To secondary board be affected with damp be generator generator set affected with damp in the tg of the delta slants big,can replace the original secondary wiring board,change the way to solve small secondary outlet casing.