The single-phase installation method of 10kV overhead bare conductor with parallel gap can effectively improve the lightning resistance level of the line, but it further expands the difference in insulation level between the line and the equipment, and the power distribution equipment is more vulnerable to damage. It is not economically feasible to improve the insulation level of power distribution equipment and the current capacity of the zinc oxide arrester (MOA) at the front end of the equipment, this paper adopts the method of installing co...