英语语法分析

The device which has high real-time character improves the reliability of the switch-disconnector protection.

该装置提高了矿用开关保护的实时性和可靠性。

The new disconnector is of rational structural principle, high reliability and good technical performance, and therefore merits spreading.

该种脱离器结构原理合理，运行可靠性高，技术性能完善，可推广使用。

The effect was obvious to select four-star connection MOA was a main protector to limit overvoltage in operation of a vacuum disconnector.

选用四星型MOA作为限制真空断路器操作过电压的主保护器，效果十分明显。