Electric equipment maintenance procedures

 Oil-immersed transformer maintenance procedures are in operation or shutdown transformer routine maintenance once a year,stop running transformer increase maintenance once before put into use. Maintenance steps:(1) off to maintain the low voltage side of transformer circuit breaker,pull the isolating switch,hang on the permanent magnet motor corresponding sign.(2) disconnect the transformer high side load switch,confirmed after the disconnected position on grounding knife,and complete the switch security insurance and hanging sign.(3) into the transformer oil chamber,the first application of high-pressure electroscope to confirm whether the station transformer in the ac induction motor power state,and then pulled high voltage isolation knife,check the shell,porcelain and lead any deformation phenomenon,there is any breakage should be replaced,the oil level is normal,if there are any oil leakage phenomenon,should replace the rubber gasket,check whether the silica gel is effective,if there are any discoloration or serious failure,should be replaced immediately.

(4) retightened lead terminal,pin,grounding screw; Screw into the line,if there are any loose,should remove the screw with a flat file file interface,touch no uneven feeling after use clean cloth to wipe the dust,wipe on vaseline,change new spring washer,tighten the screw.(5) check whether the lighting,cooling and dust removal equipment surrounding the transformer is in good condition,with a clean cloth wipe away the diesel generators prices dust on the transformer body and vases.(6) check the transformer high side load switch,to ensure the flexible operation,good contacts,transmission part of the lubrication process.(7) 2500 v of the shaking table was used to measure high and low voltage transformer coil insulation resistance (to) and alternate with,in order (at room temperature 30 ℃,1 okv transformer high voltage side is more than 20 m Ω,low voltage side is more than 13 m Ω.Before the test,can good grounding wires,determination to end,should be discharge.

(8) check whether there is any legacy tools on transformer room and www.facebook.com/dongfeng.motor transformer,and verified,and on the high side isolating switch,evacuate the scene.(9) pulled high voltage earthing knife,after check grounding in the off position correctly,closed high-voltage load switch,let the transformer,and remove the high pressure side id CARDS,pay attention to in the open or close the transformer high voltage load switch,the site must have at least two people.Record maintenance results in detail,after delivery document preservation.(10) of the dry type transformer maintenance procedures and maintenance of oil-immersed very much the same. Maintenance of transformer's note: to ensure the use environment of transformer,in the absence of corrosive environment,the environment temperature should be within the - 30 ℃ to + 40 ℃,wind speed is not more than 350 meters per second,in the transformer high voltage side such as high voltage load switch,the operator should be three-phase transformer side short sub,and makes operation records at any time.High voltage transformer operating personnel should wear insulated shoes,wear insulated gloves.To prevent the transformer in the power and the transformer job mother discharge of electricity.