It consists of two sources: low voltage high power source which puts the arc maintenance 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。
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。
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.
介绍了MZE - 630埋弧自动焊机的基本原理与结构，焊机操作与维护，焊机常见故障、产生原因和排除方法。
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