Actuator circuit for control of circuit breaker
AssigneeGeneral Electric Technology GmbH
InventorPeter Von Allmen
Life of this patent
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Abstract
The invention relates to an actuator circuit for actuating a circuit breaker controller, the circuit being characterized in that it comprises two branches in parallel between two terminals and in that the first branch includes only a first coil; the second branch includes a second coil having impedance that is lower than the first, in series with a switch controlled by a switch circuit.
Claims8
An actuator circuit for actuating a circuit breaker controller, the circuit comprising:
- two branches in parallel between two terminals, wherein:
- the first branch includes only a first coil;
- and
- the second branch includes a second coil having impedance that is lower than the first coil, in series with a switch controlled by a switch circuit and a diode connected in parallel to the second coil,
- wherein the switch circuit comprises a bipolar transistor, wherein a collector of the bipolar transistor is connected to one terminal of a first resistor, another terminal of the first resistor is connected to a first terminal of the two terminals, an emitter of the bipolar transistor is connected to a second terminal of the two terminals, and a base of the bipolar transistor is connected to an anode of a Zener diode, wherein a cathode of the Zener diode is connected to a capacitor and a second resistor connected in parallel to each other and to the second terminal, and wherein the cathode of the Zener diode is connected to a third resistor connected to the first terminal.
A circuit breaker controller comprising an actuator circuit having two branches in parallel between two terminals wherein:
- the first branch includes only a first coil;
- and
- the second branch includes a second coil having impedance that is lower than the first coil, in series with a switch controlled by a switch circuit and a diode connected in parallel to the second coil, wherein an anode of the diode is connected to the switch and a cathode of the diode is connected to one of the terminals,
- wherein the switch circuit comprises a bipolar transistor, wherein a collector of the bipolar transistor is connected to one terminal of a first resistor, another terminal of the first resistor is connected to a first terminal of the two terminals, an emitter of the bipolar transistor is connected to a second terminal of the two terminals, and a base of the bipolar transistor is connected to an anode of a Zener diode, wherein a cathode of the Zener diode is connected to a capacitor and a second resistor connected in parallel to each other and to the second terminal, and wherein the cathode of the Zener diode is connected to a third resistor connected to the first terminal.
A circuit breaker comprising a controller provided with an actuator circuit having two branches in parallel between two terminals wherein:
- the first branch includes only a first coil;
- and
- the second branch includes a second coil having impedance that is lower than the first coil, in series with a switch controlled by a switch circuit and a diode connected in parallel to the second coil, wherein an anode of the diode is connected to the switch and a cathode of the diode is connected to one of the terminals,
- wherein the switch circuit comprises a bipolar transistor, wherein a collector of the bipolar transistor is connected to one terminal of a first resistor, another terminal of the first resistor is connected to a first terminal of the two terminals, an emitter of the bipolar transistor is connected to a second terminal of the two terminals, and a base of the bipolar transistor is connected to an anode of a Zener diode, wherein a cathode of the Zener diode is connected to a capacitor and a second resistor connected in parallel to each other and to the second terminal, and wherein the cathode of the Zener diode is connected to a third resistor connected to the first terminal.
Dependencies are inferred from the claim text.