Dual mode controller for assigning operating priority of two loa

Details Dual mode controller for assigning operating priority of two loa Dual mode controller for assigning operating priority of two loa

1986-03-21

1987-08-18

Miska, Vit W.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

361191, H02J 100

Patent

active

046879480

ABSTRACT:
A dual mode controller used to allow only one of either a primary heating/cooling system or a hot water heater to operate at one time. It is particularly useful where utility billing is based on peak demand. A two-position switch is used to select the mode such that in one switch position the heating/cooling system is given priority regardless of the operating status of the hot water heater, and in the other position the operating load is given priority. This relatively simple circuit includes one conventional relay and either another conventional relay or a pilot duty relay energized by an integral "doughnut" type current transformer.

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patent: 3629599 (1971-12-01), Zuckerman
patent: 3937977 (1976-02-01), Carr
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patent: 4310770 (1982-01-01), Keener et al.
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patent: 4357665 (1982-11-01), Korff
patent: 4419589 (1983-12-01), Ross
patent: 4437018 (1984-03-01), Manley

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