Selectable shunt voltage for circuit breaker
AssigneeVertiv Corporation
InventorsTaylor Zigon, Jason David Peltier, Thomas Lammers
Life of this patent
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Abstract
A system for operating a circuit breaker is disclosed. The system includes a shunt coil configured to trip a circuit breaker. A first voltage source is configured to produce a first voltage and second voltage source configured to produce a second voltage. A voltage selection circuit configured to select one of the first and second voltage sources. A shunt drive circuit configured to drive an actuation voltage to the shunt coil based on a selected one of the first and second voltages.
Claims20
A system for operating a circuit breaker, the system comprising:
- a shunt coil configured to trip the circuit breaker;
- a first voltage source configured to produce a first voltage and second voltage source configured to produce a second voltage;
- a voltage selection circuit configured to select one of the first and second voltage sources;
- and
- a shunt drive circuit configured to drive an actuation voltage to the shunt coil based on a selected one of the first and second voltages.
A method comprising:
- generating, using a first voltage source, a first voltage;
- generating, using a second voltage source, a second voltage;
- providing, to a shunt drive circuit and using a selection circuit, a selected one of the first voltage and the second voltage;
- generating, using the shunt drive circuit, an actuation voltage based on the selected one of the first voltage and the second voltage;
- providing the actuation voltage from the shunt drive circuit to a shunt coil in response to receiving, at the shunt drive circuit, a trigger signal;
- and
- opening a circuit breaker, using the shunt coil, in response to receiving the actuation voltage.
A system for operating a circuit breaker, the system comprising:
- a circuit breaker coupled between an AC source and a load circuit;
- a shunt coil configured to trip the circuit breaker;
- a DC supply configured to produce a first DC voltage;
- a DC-DC converter configured to receive the first DC voltage from the DC supply and generate a second DC voltage;
- a voltage selection circuit configured to select one of the first DC voltage from the DC supply and the second DC voltage from the DC-DC converter in response to a voltage selection input;
- and
- a shunt drive circuit configured to receive a selected one of the first DC voltage and the second DC voltage from the voltage selection circuit and further configured to drive an actuation voltage to the shunt coil based on the selected voltage in response to a trigger signal.
Dependencies are inferred from the claim text.