Patent ID: 7782578
Filing Date: 2010-08-24
Classification: H01H

Abstract:
1. A relay system, comprising: a load having a first and a second terminals; a first relay coupled to a common ground and the first terminal of the load; a relay protection circuit suppressing an arc generated by the first relay, comprising: a voltage divider electrically connected between the energy storage element and the high-impedance element in series and providing an output signal when the first relay is tripping; and an alarming system having a first and a second terminals, being one of the configurations that the first terminal of the alarming system is coupled to the second terminal of the energy storage element and the second terminal of the alarming system is coupled to the voltage divider, and the first terminal of the alarming system is coupled to the voltage divider and the second terminal of the alarming system is coupled to the second terminal of the energy storage element.