真空灭弧室的内部气体压力直接影响真空断路器的性能。
The gas pressure within vacuum interrupter has a direct effect upon the properties of vacuum circuit breaker.
本论文提出了一种新型的真空断路器结构，该结构可以利用触点电流在线动态补偿触点压力。
In the paper a new structure of the developed vacuum circuit breaker with the on-line dynamic contact force compensation by means of the contact current is presented.
利用它对国产OFPI—220型SF_6断路器进行的计算结果表明，改变动触头排气孔位置及电弧对动触头内腔中气体的热效应可明显提高开断电流时灭弧室压力上升速度。
The results show that the position of the exhausting gas hole and the arc heat effects on the gas inside the hollow moving contact have obviously raised the pressure rising speed.
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