Electric load restriction unit

Details Electric load restriction unit Electric load restriction unit

1974-10-22

1976-03-16

Miller, J. D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307 39, 317 16, H02J 314

Patent

active

039448851

ABSTRACT:
An electric load restriction device which conserves the secondary use of electricity during a period of a power shortage by causing selected load circuit breakers to open, in response to a change of frequency in the supplied primary electrical energy. The device is electrically connected to individual selected circuit breaker output connections mounted in a conventional electrical distribution box. The device is fitted with a frequency sensing device that actuates a solenoid, when the incoming electrical frequency falls below a normal valve, with the contactors of the solenoid, in the closed position sending an overload current to the load side of each of the selected load circuit breakers to cause the selected load circuit breakers to open. The solenoid is fitted with pivotably mounted contact arm, with the solenoid contact arm initially contacting the switch contacts of the individual overload circuits sequentially as the contact arm is caused to rotate into a plane parallel to the common contact plane of these switch contacts by the linear motion of the solenoid contact arm as the solenoid coil causes the arm to move towards the switch contacts.

REFERENCES:
patent: 3486033 (1969-12-01), Salo

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