Secondary power meter for quarter-cycle power measurement and invoicing method
First Claim
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1. A device for measuring quarter-cycle load on a full cycle power circuit, comprising:
- a single-phase power source connected inline to a first power meter provided by an electric company;
an adapter coupled to said single-phase power source which outputs one-quarter cycle alternating current to a transducer;
a voltage pickup between said single phase power source and said transducer coupled to a voltage-measuring device; and
a current-measuring device coupled after said transducer;
a second power meter recording said measurement of said quarter-cycle usage and exhibiting a difference in power usage between a measurement of power by said first power meter and said measurement of said quarter-cycle power usage.
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Abstract
The disclosed technology comprises a device and a method for accurately determining the amount of electrical energy utilized in a circuit with a quarter-cycle transformer and transducers operating off quarter-cycle power. The method allows for a primary power meter associated with an entity which provides a power source to remain in operation, without modification, and for a second power meter to be utilized which accurately measures consumption of quarter-cycle power usage. An adjustment to an invoice can then be made, based on the difference.
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Citations
19 Claims
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1. A device for measuring quarter-cycle load on a full cycle power circuit, comprising:
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a single-phase power source connected inline to a first power meter provided by an electric company; an adapter coupled to said single-phase power source which outputs one-quarter cycle alternating current to a transducer; a voltage pickup between said single phase power source and said transducer coupled to a voltage-measuring device; and a current-measuring device coupled after said transducer; a second power meter recording said measurement of said quarter-cycle usage and exhibiting a difference in power usage between a measurement of power by said first power meter and said measurement of said quarter-cycle power usage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of measuring energy consumption comprising:
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receiving single-phase electrical power via a power meter configured to measure usage of said single-phase electrical power; transforming a portion of said single-phase electrical power to one-quarter-cycle current at a transformer; electrically connecting a transducer to said transformer and powering said transducer via one-quarter-cycle power; measuring one-quarter-cycle voltage usage via an electrical connection before said transformer and one-quarter-cycle current after said transducer;
wherein a result of said measuring is compared to a result measured at said power meter and a determination is made if said results demonstrate an offset or error in the comparison that differ greater than a pre-designated threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification