Polyphase emulator for single phase circuit
First Claim
1. A polyphase emulator for use in demonstrating the functionality of a polyphase electricity meter and for operation on a single phase electricity circuit comprising:
- a. phase generating circuit means for generating multiple sets of currents and voltages, each of said sets having a nominal predetermined phase relationship with respect to each of the other sets, said phase generating circuit means including means for altering said nominal predetermined phase relationships between said sets of currents and voltages; and
b. a plurality of phase specific circuit means, the number of said phase specific circuit means corresponding to the number of sets of currents and voltages generated by said phase generating circuit means, each of said plurality of phase specific circuit means including means for emulating specific parameters which relate to the phase relationships between the voltage and current within each of said sets as they relate to each other and to the voltage and currents within other ones of said sets.
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Accused Products
Abstract
An emulator which is able to operate on a standard single phase 120 VAC line, generates simulated three-phase alternating current in order to demonstrate the operation of a polyphase electricity meter. The emulator is also capable of demonstrating the operation of the polyphase electricity meter which has been incorrectly wired into the polyphase circuit, i.e., with incorrect or missing connections to the current transformers; or in which there are problems with the phasing of the polyphase circuit, i.e., incorrect phase differences between circuits or between the currents and voltages within any of the phases.
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Citations
4 Claims
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1. A polyphase emulator for use in demonstrating the functionality of a polyphase electricity meter and for operation on a single phase electricity circuit comprising:
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a. phase generating circuit means for generating multiple sets of currents and voltages, each of said sets having a nominal predetermined phase relationship with respect to each of the other sets, said phase generating circuit means including means for altering said nominal predetermined phase relationships between said sets of currents and voltages; and b. a plurality of phase specific circuit means, the number of said phase specific circuit means corresponding to the number of sets of currents and voltages generated by said phase generating circuit means, each of said plurality of phase specific circuit means including means for emulating specific parameters which relate to the phase relationships between the voltage and current within each of said sets as they relate to each other and to the voltage and currents within other ones of said sets. - View Dependent Claims (2, 3, 4)
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Specification