The traditional control cabinet of oil-pumping unit is using continuous electricity contact system through the mechanical touching point by closing and opening to achieve the circuit's "on" and"off".
传统的抽油机控制柜大都采用继电接触系统，通过机械式触点闭合、断开实现电路导通或断开。
The traditional control cabinet of oil-pumping unit is using continuous electricity contact system through the mechanical touching point by closing and opening to achieve the circuit's "on" and"off".
传统的抽油机控制柜大都采用继电接触系统，通过机械式触点闭合、断开实现电路导通或断开。
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