The switch is the tapping regulating and changing equipment of the combined transformer (power transformer) under the condition of non execitation. It’s applicable to the three phase oil-immersed transformer with the rated voltage 10-35KV, rated current from 63A to 125A. Only under non-excitation condition, can the switch be operates.
Switch dimension
Mainly paremeter (Note : Use in the insulating strength 35KV transformer)
Installation
Remove the M5 bolt in the middle of the handle,then pull down the handle,round nut,gasket, gear one by one. Put the switch into the φ34 holes on the tank cover. Then fit on the gear, gasket,round nut,handle, fixed the M5 bolt.(Notice: gasket is under the tank cover of transformer ).
Notice
1) Use of enivronment temperature: in air -40ºC~40ºC,in oil -40ºC~110ºC
2) Installation places should not be explosive and corrosive gases.
3) Before assembling the tapping switch, must check up whether the tapping switch conforms to the type specification of the transformer in order to avoid causing the loss that should not occur.
4) The leading wire of the terminal of the tapping switch mustn’t make the tapping switch deformed because of stressing and the leading wire and the moving part should have enough moving space (usually 10mm) in order to avoid movement hindered.
5) The maximum drying temperature of this switch is 110ºC, if after drying,If the contact resistance is too large, should be running tap back several times.
6) When the switch is in the maximum gear position, strictly forbid wrenching the handle to the limit direction.
7) Before assembling and switching should make 3~5 times of transfer on the tapping position of the tapping switch, when the tapping has completed the regulating transfer, the transfer handle must be put into the flange locating slot.
