Insulation enhancing device for oil-immersed loaded capacitance-adjusting switch electrical endurance test

An insulation enhancing device for an oil-immersed loaded capacitance-adjusting switch electrical endurance test comprises arc isolation plates, connecting plates, supporting rods, connecting pipes and insulation sleeves corresponding to the shape of an oil drum housing of the loaded capacitance-adjusting switch, wherein the arc isolation plates are symmetrically fixed in pairs between high voltage phase contact layers outside the oil drum housing of the loaded capacitance-adjusting switch through the supporting rods and the connecting plates; the connecting pipes and the insulation sleeves are sleeved in order outside high voltage contacts of the loaded capacitance-adjusting switch; the arc isolation plates, the connecting plates, the supporting rods and the insulation sleeves are all prepared by insulation materials. The insulation intensity of the insulation oil drum housing of the oil-immersed loaded capacitance-adjusting switch is improved, so the purpose of carrying out electrical endurance test for the