Experimental study on conductivity and wear properties of different silver coating parameters of column disconnecting switch
To improve the conductivity and wear resistance of disconnecting switch,silver plating is mainly used in the contact part.However,there is a lack of research on the influence of thickness,roughness and hardness of silver plating on the conductivity and wear of disconnecting switch,it is ur-gent to provide a more reasonable design standard.In this paper,GW-9 series column disconnecting switches were taken as the research object,and the test samples were produced.The effects of thick-ness,roughness,hardness of silver plating layer and coated electric grease on the electrical conductivi-ty and friction properties of the contact parts of disconnecting switches were studied.The results show that silver plating can improve the electrical conductivity and friction properties of disconnecting switch contact.The roughness and hardness of silver plating have a certain effect on the electrical conductivity of contact surface.Thickness of the silver plating has little effect on the electrical conductivity of con-tact surface.The anti-wear property of disconnecting switch can be improved significantly under electric compound grease lubrication.The research results can provide theoretical and experimental basis for the standardized design of electrical contact material parameters of disconnecting switch.
column disconnecting switchelectrical conductivityanti-wear abilityelectric compound greaseelectrical contact material
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