Method and apparatus for detecting and responding to downed cond

Details Method and apparatus for detecting and responding to downed cond Method and apparatus for detecting and responding to downed cond

1993-07-20

1994-08-23

Deboer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 47, 361 66, 361 86, 361 81, H02H 316

Patent

active

053412656

ABSTRACT:
A system for detecting a high impedance fault in a phase conductor having a potential device connected to the phase conductor, the system including a signal injection device having an input from the potential device which detects a reduction in voltage at the phase conductor and outputs a first signal in response to detecting a reduction in voltage at the phase conductor and a signal receiver which receives the first signal and provides a second signal to an interruption device in response to having received the first signal to cause the interruption device to open the circuit to the phase conductor.

REFERENCES:
patent: 4389694 (1983-06-01), Cornwell, Jr.
patent: 4935837 (1990-06-01), Sun

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