Method and apparatus for providing signals from LTC transformer to electrical devices
OwnerRobert W. Beckwithinventor
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Abstract
A method and apparatus for utilizing a load tap changing transformer as a control signal communicator.
Claims12
A method for utilizing a load tap changing transformer for signal communication for enabling selective control of electrical devices receiving electrical power from said transformer, consisting of the steps of:
- (a) providing a coded signal from said load tap changing transformer, comprising time-dependent stepped voltage variations;
- (b) coupling said coded signal to electrical input points of said devices;
- and
- (c) enabling said devices to selectively decode said coded signal and selectively respond thereto;
- (d) whereby the electrical energy coupled to energize said devices is controlled.
A load tap changing transformer system for use with a power distribution system having a plurality of electrical devices connected thereto, wherein the transformer has a plurality of electrical taps for providing output power at voltages dependent on the variable tap position setting of said transformer comprising, in combination, means for enabling said transformer to provide a coded output comprising time-dependent voltage levels, means for providing a signal to cause said transformer to provide said coded output, signal-receiving and decoding means associated with said devices for enabling said devices to be selectively activated in response to a selected code, whereby the power status of selected ones of said devices may be controlled.
Dependencies are inferred from the claim text.