Design of Power Protection Module of Three-phase Asynchronous Motor
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摘要: 介绍一种实用的三相电源保护电路模块。该模块对断相、三相电压不平衡、相序接反等故障均能检测。电路采用全电子电路实现,性能稳定可靠、价格低廉,可以直接作为三相异步电动机的保护模块或者继电接触器的控制组件,具有较高的实用价值。Abstract: An useful protection module of three-phase power was introduced in this paper. The module can detect each power faults such as phase lines opened, voltage of three-phase unbalanced, phase line reversed, etc. The module was completed fully by electronic components. And it’s working function was reliable and the price was lower. It can work as a protecting module of three-phase asynchronous motor or a control set of relay-contactors. So it has a high value in practice.
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Key words:
- asynchronous motor /
- three-phase power /
- protection /
- fault
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