System and method for maintaining proper phase neutral wiring in a power system
First Claim
1. A method of operating a UPS system having a first UPS, the method comprising:
- receiving, at an input of the first UPS, input power from a power source;
generating, with a first analysis circuit within the first UPS, a first signal containing information indicative of a signal characteristic of the input power received by the first UPS;
receiving, at the first analysis circuit, a second signal from a second analysis circuit of a device coupled to the power source, the second signal containing information indicative of a signal characteristic of input power received by the device;
analyzing, with the first analysis circuit, the first signal from the first analysis circuit of the first UPS and the second signal from the second analysis circuit of the device;
determining, in response to analyzing the first signal and the second signal, whether an improper wiring condition exists at the input of the first UPS;
in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition does not exist at the input, providing output power to an output of the first UPS; and
in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition does exist at the input, de-energizing the first UPS.
1 Assignment
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Accused Products
Abstract
According to one aspect, embodiments of the invention provide a method of operating a UPS system, the method comprising receiving, at an input of a first UPS, input power from a power source, generating, with a first analysis circuit, a first signal indicative of a characteristic of the input power, receiving, at the analysis circuit, a second signal from a second analysis circuit of a device coupled to the power source, the second signal indicative of a characteristic of input power received at the second analysis circuit, analyzing with the analysis circuitry, the first signal and the second signal, determining, whether an improper wiring condition exists at the input, in response to a determination that an improper wiring condition does not exist, providing output power to an output of the first UPS, and in response to a determination that an improper wiring condition does exist, de-energizing the first UPS.
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Citations
20 Claims
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1. A method of operating a UPS system having a first UPS, the method comprising:
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receiving, at an input of the first UPS, input power from a power source; generating, with a first analysis circuit within the first UPS, a first signal containing information indicative of a signal characteristic of the input power received by the first UPS; receiving, at the first analysis circuit, a second signal from a second analysis circuit of a device coupled to the power source, the second signal containing information indicative of a signal characteristic of input power received by the device; analyzing, with the first analysis circuit, the first signal from the first analysis circuit of the first UPS and the second signal from the second analysis circuit of the device; determining, in response to analyzing the first signal and the second signal, whether an improper wiring condition exists at the input of the first UPS; in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition does not exist at the input, providing output power to an output of the first UPS; and in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition does exist at the input, de-energizing the first UPS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A UPS comprising:
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an input to receive input power from a power source; an output to provide output power to a load; a first analysis circuit coupled to the input and configured to be coupled to a communication bus; and control circuitry coupled to the first analysis circuit; wherein the first analysis circuit is configured to generate a first signal containing information indicative of a signal characteristic of the input power at the input, receive via the communication bus a second signal from a second analysis circuit of a device coupled to the power source, the second signal containing information indicative of a signal characteristic of input power received by the device, analyze the first signal from the first analysis circuit of the UPS and the second signal from the second analysis circuit of the device, and determine, based on the first and second signal analysis, whether an improper wiring condition exists at the input, wherein, in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition does not exist at the input, the control circuitry is configured to operate the UPS to provide output power to the output, and wherein, in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition does exist at the input, the control circuitry is configured to de-energize the UPS. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A parallel UPS system, the system comprising:
a plurality of UPS'"'"'s coupled in parallel, each UPS including; at least one phase input coupled to a power source via a mains bus; a neutral input coupled to the power source via the mains bus; at least one phase output coupled to a load via a load bus; a neutral output coupled to the load via the load bus; and means for identifying incorrect wiring of the at least one phase input and the neutral input to the mains bus and the at least one phase output and the neutral output to the load bus.
Specification