Patent ID: 6219216
Filing Date: 2001-04-17
Classification: H01H,H02H

Abstract:
A protection device for monitoring current in a power cable to an electrical device and for controlling a starter for the electrical device in response to a system remotely located controller, the protection device comprising:(a) a transformer magnetically linked with said power cable connected to said electrical device, said transformer producing a voltage signal in response to the presence of a changing current within said power cable;(b) an input circuit located proximate to said transformer and having an output terminal and being electrically connected to said transformer so as to receive said voltage signal, said input circuit producing, in response to receiving said voltage signal, one of a first signal representative of said changing current, and a first circuit condition at said output terminal of said input circuit representative of said changing current in said power cable;(c) a switch circuit for sensing one of a second signal and a second circuit condition of a remotely located system controller and providing one of a third signal and a third circuit condition, in response to sensing one of said second signal and said second circuit condition, said third signal and said third circuit condition being effective to control said starter when said starter is electrically connected thereto; and,(d) all of said transformer, said input circuit, and said switch circuit being located in a single unitary package.