UNINTERRUPTIBLE POWER SUPPLY
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Abstract
An uninterruptible power supply (UPS) system includes an AC power input configured to receive AC power from a single-phase AC power source or a multi-phase AC power source, a DC power source, an output circuit including a power output, a controllable switch configured to selectively couple at least one of the AC power input and the DC power source to the output circuit, and a processor coupled and configured to affect operation of the output circuit depending upon which of single-phase and multi-phase operation of the UPS is indicated.
50 Citations
59 Claims
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1-8. -8. (canceled)
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9. A circuit for selectively coupling a battery to a load, the circuit comprising:
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an input for receiving power from the battery; an output for providing power from the circuit to the load; an isolation switch; a resistance coupled to the isolation switch and the output; and a bypass switch coupled to the input and the output and configured to selectively couple the input to the output while bypassing the isolation switch and the resistance; wherein the isolation switch is configured to selectively couple the input to the resistance. - View Dependent Claims (10, 47, 48, 49, 50, 51, 52)
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11-46. -46. (canceled)
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53. An uninterruptible power supply (UPS) system comprising:
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a DC power source; a processor configured to monitor the DC power source; a resistor coupled to the processor; a logic power supply configured to supply power to the processor; a first switch configured to couple the DC power source to the processor via the resistor when the logic power supply is active and to isolate the DC power source from the processor when the power supply is inactive; and a second switch that when closed is configured to couple the DC power source to the processor and bypass the resistor. - View Dependent Claims (54, 55, 56, 57, 58, 59)
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Specification