Electrical system
AssigneeEaton Intelligent Power Limited
InventorsChaitanya Bhalwankar, Birger Pahl, Steve Schmalz, Galen Chui
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Abstract
A method of monitoring an electrical system may include providing a ground fault detection unit, operating a transformer rectifier unit to provide DC power to a load, sensing, via a current sensor, a ground current at or about an output of the transformer rectifier, and/or monitoring a sensor output from the current sensor via the ground fault detection circuit. The ground fault detection circuit may be configured to detect ground faults at frequencies of at least 30 kHz.
Claims20
A method of monitoring an electrical system, the method comprising:
- providing a ground fault detection unit;
- operating a transformer rectifier unit to provide DC power to a load;
- sensing, via a current sensor, a ground current at or about an output of the transformer rectifier unit;
- and
- monitoring a sensor output from the current sensor via the ground fault detection unit;
- wherein the ground fault detection unit is configured to detect ground faults at frequencies of at least 30 kHz.
An electrical system, comprising:
- a ground fault detection unit, including:
- a first ground fault detection circuit including a first portion and a second portion, the first portion and the second portion connected to a first current sensor;
- and
- a second ground fault detection circuit including a first portion and a second portion, the first portion and the second portion connected to a second current sensor;
- wherein the first current sensor and the second current sensor are configured to sense current at or about an output of a DC power supply.
Dependencies are inferred from the claim text.