Presents the basic principle and function of the new generation of comprehensive electric protector, as well as the whole process control of HP electric motor switch-on with it.

介绍新一代综合保护器基本原理和功能，利用电气综合保护器，对高压电动机的启动实现全过程控制。

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The paper describes emphatically the principles of electrical leakage protector, the selection of design parameters and erection as well as wiring and inquires into the reliability of it.

重点论述漏电保护装置的原理、设计参数选定和安装接线，对其可靠性进行探讨。

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Introductions are given to the principle of testing motor protector and technical parameters, as well as the structure of computer automated test system for motor protectors.

介绍了马达保护器的测试工作原理、技术指标，提出了马达保护器的计算机自动测试系统的组成结构。

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To the contrary, the Saudis appear content to keep prices exorbitantly high, even though they are well aware of the adverse impact such artificially inflated costs have on the financial well-being of their principal protector, the United States.

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And we can expect trouble in the Balkans from Russia, which, going well back into history, has regarded itself as protector of the Serbs.

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After all, the US has been for a long time a useful military protector, a powerful economic model as well as an enduring normative power to most of them.

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