We decide the cross and span clearance by over-voltage times and electrical insulation strength (air spacing) from the system major in places that the public not easy to arrive.

再根据系统确定的操作过电压倍数及电气绝缘强度（空气间隙）来确定在人不宜到达地方的交叉跨越距离；

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Features: use cross voltage pulse energy storing capacitance, PLC programming, over-voltage automatic protection, manual and automatic operation.

特点：采用交压胶冲储能电容，PLC程控，有过压自动保护和手动、自动操作。

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