Ground fault circuit interrupt system including auxiliary surge

Details Ground fault circuit interrupt system including auxiliary surge Ground fault circuit interrupt system including auxiliary surge

1995-07-19

1997-08-05

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 45, 361118, H02H 300

Patent

active

056548575

ABSTRACT:
A ground fault circuit interrupt system with auxiliary surge suppression ability is provided which includes line-side system, phase, neutral and ground terminals electrically connectable to phase, neutral and ground terminals of an AC source and load-side system, phase, neutral and ground terminals electrically connectable, respectively, to phase, neutral and ground terminals of an electrical load. The system includes a ground fault circuit interrupter including line- and load-side phase and neutral ports for electrical connection to the line-side system, phase and neutral terminals for controlling a state of conduction of AC between the source and electrical load in accordance with a detection of an interrupt condition. A relay switch is also included which has a relay coil and phase and neutral contacts such that line and load ends of the phase contact are electrically connected, respectively, to a GFCI load-side phase port and load-side system, phase terminal, line and load ends of the neutral contact are electrically connected, respectively, to a GFCI load-side neutral port and load-side system, neutral terminal; and the relay coil is electrically coupled between the load ends of the phase and neutral contacts for controlling said contacts in response to the interrupt condition. First second and third transient voltage surge suppressors electrically connected between the line-side system, phase and neutral terminals, phase and ground terminals and neutral and ground terminals for transient voltage surge suppression protection.

REFERENCES:
patent: 4023071 (1977-05-01), Fussell
patent: 4271446 (1981-06-01), Comstock
patent: 4518945 (1985-05-01), Doyle et al.
patent: 4740859 (1988-04-01), Little

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