Patent ID: 7898788
Filing Date: 2011-03-01
Classification: H01F,H01H

Abstract:
1. An electronic control device for a switch unit, which comprises an electromagnetic actuator having a control coil powered by an excitation current for closing a power electrical circuit, wherein said electronic control device comprises: a storage unit for storing at least one coil control profile, said coil control profile containing a plurality of values representative of the excitation current as a function of respective points of time, wherein each of the plurality of values representative of the excitation current in the control profile is a percentage of a value of a nominal excitation current of the control coil; and a drive unit connected to the storage unit, receiving at its input an external close command and controlling at its output said excitation current at respective points of time from the receipt of the external close command to follow the plurality of excitation current values of said control profile during the closing of the power circuit, the drive unit operating in open loop mode, without using information relating to the switch unit that includes at least a measurement of an excitation current at the control coil.