过载保护技术是低压电器智能化技术的重要组成部分，是保证电动机、配电线路安全运行的重要技术。
The over-load protection technology is an indispensable constituent of the low-voltage apparatus intellectualization, ensuring the electric motor and the distribution line safe operation.
安全域的数学描述使注入功率不确定性和电动机负荷比例不确定性的计及变得简便。
The practical mathematic description of dynamic security region makes it easy to take account of the uncertainties of power injections and motor loads proportion.
文章分析了同步电动机频繁损坏的主要原因，提出了解决措施，以确保电机安全运转。
Frequent damage causes of synchronous motor are analyzed, the technical measure to guarantee the synchronous motor safe handling are put forward.
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