| Summary: | 碩士 === 國立彰化師範大學 === 電機工程學系 === 103 === This thesis aims the energy saving on electromagnetic contactor using solenoid lock device type component. For the purpose of energy saving and control, a control circuit is designed between the exchange power and electromagnetic contactor. After the electromagnetic contactor is conducted, the machinery of the solenoid lock device fastens and locks automatically. The main contact point of electromagnetic contactor is kept conducted , and the coil power is cut off for energy saving. After finishing movements of ordering, urge the solenoid lock to unblock at once. In this thesis, there are two major designs which are automatic unlock functions. The solenoid lock will automatically unlock when the power system is failure or under maintenance if the solenoid is locked.
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