（1）不承受工频电压，线路损耗低，使用寿命长免维护；

(1) no power frequency voltage, low line loss, long service life free maintenance;

（2）串联间隙的隔离效果可避免故障时形成单相死接地，也不影响线路的安全运行。

(2) the isolation effect of the series gap can avoid the formation of single phase dead earthing when the fault is malfunction, and it does not affect the safe operation of the line.

（3）安装方便，不需更换绝缘子，也不需更改原有线路设计；

(3) easy installation, no need to replace insulators, nor need to change the original design of the line;

（4）它的灭弧原理是通过限流元件快速切断工频续流，有效限制雷电过电压，不需断路器跳闸灭弧，不会造成供电中断或影响供电质量；

(4) its principle of arcing is to cut off the power frequency continuous flow rapidly through the current limiting element, effectively limit the lightning overvoltage, and do not need to break the circuit breaker to extinguish the arc, which will not cause interruption of power supply or affect the quality of power supply.

（5）不需破开导线绝缘层，无需解决导线密封防水问题，不会影响导线机械拉伸性能和使用寿命。

(5) it does not need to break the insulation layer of the wire, and it does not need to solve the problem of sealing and waterproof of the wire, and it will not affect the tensile property and service life of the wire.