It consists of two sources: low voltage high power source which puts the arcmaintenance into practice and high voltage low power source which carries out the arc reignition.
它由两组电源构成：维持电弧燃烧的大功率低压电源和执行再引弧的小功率高压电源。
2
Shorter ARC durations ultimately mean less contacts burning, resulting in less maintenance and a better breaker.
归根结底，电弧持续时间越短，触头越不易烧熔，维修量越少，而断路器性能越好。
3
And it also introduces the basic principle and structure, operation and maintenance, common problems, troubleshooting and solutions of MZE-630 automatic submerged arc welding machine.