Apparatus for metering electrical power and electronically communicating electrical power information
First Claim
1. An apparatus for metering a plurality of types of electrical power and electronically communicating electrical power information, said electrical power comprising voltage and current characteristics determined in accordance with sensed analog voltage and current signals, said apparatus comprising:
- a first processor which receives said analog voltage and current signals and converts said analog voltage and current signals to digital voltage and current signals, said first processor determining at least one selected type of metered power based on said digital voltage and current signals and outputting a metering signal representative of said at least one selected type of metered power;
a second processor which receives said metering signal and outputs at least one output signal based on said metering signal; and
a commuincations interface, which receives said at least one output signal and communicates said electrical power information external to said apparatus in a format specific to said communications interface, wherein said second processor adapted to be configured via said communications interface.
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Abstract
An apparatus for electronically communicating metered electrical power is disclosed. A first processor receives voltage and current signals and determines electrical power. The first processor generates an power signal representative of the electrical power determination. A second processor, connected to said first processor, receives the power signal and generates an output signal representative of electrical power information. A output device is connected to receive the output signal to output the electrical power information. The first processor determines units of electrical power from the voltage and current signals and to generates an power signal representative of the determination of such units and the rate at which the units are determined. The output devices may be one of a display, optical port and an option connector. When the output device is a display, the second processor may generate a disk signal representative of a rate of disk rotation in relation to the rate at which the units are determined, wherein the output signal to the display is representative of the units, the rate at which said units are determined, and the rate of disk rotation. The first processor, while concurrently determining units of electrical power, further may determine watt units, apparent reactive power units and the rate at which such units are determined, wherein the watt units, the apparent reactive power units and the rate at which such units are determined are displayed. The first processor may also meter multiple types of electrical power and generates power signals. The second processor, when connected to the optical port, generates an output signal in response to the power signals, wherein the generation of the output signal includes the multiplexing of the power signals into the output signal.
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Citations
34 Claims
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1. An apparatus for metering a plurality of types of electrical power and electronically communicating electrical power information, said electrical power comprising voltage and current characteristics determined in accordance with sensed analog voltage and current signals, said apparatus comprising:
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a first processor which receives said analog voltage and current signals and converts said analog voltage and current signals to digital voltage and current signals, said first processor determining at least one selected type of metered power based on said digital voltage and current signals and outputting a metering signal representative of said at least one selected type of metered power;
a second processor which receives said metering signal and outputs at least one output signal based on said metering signal; and
a commuincations interface, which receives said at least one output signal and communicates said electrical power information external to said apparatus in a format specific to said communications interface, wherein said second processor adapted to be configured via said communications interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for metering a plurality of types of electrical power and electronically communicating electrical power information, said electrical power comprising voltage and current characteristics determined in accordance with sensed analog voltage and current signals, said apparatus comprising:
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a first processor which receives said analog voltage and current signals and converts said analog voltage and current signals to digital voltage and current signals, said first processor determining at least one selected type of metered power based on said digital voltage and current signals and outputting a metering signal representative of said at least one selected type of metered power;
a second processor which receives said metering signal and outputs at least one output signal based on said metering signal;
a non-volatile memory, connected to said second processor, which stores configuration information; and
a communications interface, which receives said at least one output signal and communicates said electrical power information external to said apparatus in a format specific to said communications interface, wherein said first processor and said second processor determine said at least one type of metered power in accordance with said configuration information stored in said non-volatile memory; and
wherein said non-volatile memory and said second processor are configurable via said communications interface. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
wherein the rate is a predetermined fraction of said unit of power and is set in accordance with said configuration information. -
29. The apparatus as recited in claim 28, wherein said one of said visible annunciators is made visible based on the Kh value of said apparatus.
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30. The apparatus as recited in claim 25, wherein said output device comprises an optical port and said at least one output signal comprises an asynchronous communication signal, wherein said optical port transmits information by converting said asynchronous communication signal to a predetermined wavelength of light, and wherein said optical port receives and converts said predetermined wavelength of light to said asynchronous communication signal to communicate with said second processor.
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31. The apparatus as recited in claim 30, wherein said metering signal is further representative of a direction and rate of power flow and said asynchronous communication signal is further representative of said rate of power flow, and wherein said information transmitted by said optical port is representative of said rate of power flow.
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32. The apparatus as recited in claim 31, wherein the second processor selects a plurality of types of metered power and multiplexes said plurality of metered power types over said optical port such that said plurality of types of metered power are transmitted by said optical power.
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33. The apparatus as recited in claim 25, wherein said at least one type of metered power comprises real power, reactive power, and apparent power.
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34. The apparatus as recited in claim 25, wherein said first processor receives plural phases of analog voltage and current signals, at least two of said plural phases being input to respective analog to digital converters to be converted into said digital voltage and current signals.
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Specification