Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1979-09-21
1981-09-29
Hix, L. T.
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307 39, 307126, H02H 106, H02H 306, H02H 324
Patent
active
042925436
ABSTRACT:
Method and apparatus for minimizing the peak load usage in electrical systems having multiple electrical power loads when each load is provided electrical power from an electrical source and including first switch means disposed in the power supply to each individual load, operator means to selectively open and close the first switch means, control means to selectively control the operator means, real time clock means to supply real time to the control means where the control means is adapted to actuate and deactuate each operator means at a preselected time to correspondingly open and close the first switch means associated with the operator means where the control means prevents simultaneous actuation of more than one operator means within a selected time interval, power outage detector means in cooperative association with the power source means to detect a power interruption at the power source means, second control means actuated upon resumption of power after interruption including input means, where the second control means is actuated by the power interruption and is adapted to override the first control means to sequentially reactivate the first switch means and load means which are to be in active condition at the real time of power resumption and where such reactivation occurs at a selected time interval and in selected time interval and in selected sequence, and return control from the second control means to the first control means upon resumption of power to all selected load means.
REFERENCES:
patent: 4177388 (1979-12-01), Lingenfelter
patent: 4180744 (1979-12-01), Helwig
patent: 4189776 (1979-02-01), Kendall
Hix L. T,.
Schreyer Stafford D.
Steutermann Edward M.
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