Electronic protection device

Details Electronic protection device Electronic protection device

1994-08-30

1996-08-13

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361106, 318471, 318783, H02H 504

Patent

active

055462626

ABSTRACT:
An electronic protection device for providing thermal protection of a load by cutting off the multiphase supply of power to the load includes a thermal sensor having at least one resistive element thermally coupled to a temperature sensor connected to an electronic processor circuit. This circuit generates a command instruction in response to any overload detected by the temperature sensor. Each resistive element of the thermal sensor is fed with current by a current sensor on a phase wire supplying power to the load.

REFERENCES:
patent: 4547826 (1985-10-01), Premerlani
patent: 4866559 (1989-09-01), Cobb, III et al.

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