Circuit interrupter including an electric arc monitoring circuit

Details Circuit interrupter including an electric arc monitoring circuit Circuit interrupter including an electric arc monitoring circuit

1995-05-31

1998-01-06

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

With tuned circuit

361110, 361 85, 324536, H02H 346

Patent

active

057061599

ABSTRACT:
A circuit interrupter including an improved arc detection system which trips the interrupter in response to currents having frequencies and/or characteristics associated with arcing within the associated alternating current electrical system. The arc monitoring circuit determines if the signal produced by a current transducer is the result of arcing. The arc detection system includes two swept filters and associated amplifiers which produce a signal which has an amplitude representative of the frequencies present in the alternating current of the electric system. The portion of the filtered signal which has amplitudes above a predetermined level is integrated to produce a trip signal for the circuit interrupter when the value of the integration exceeds a predetermined limit.

REFERENCES:
patent: H536 (1988-10-01), Strickland et al.
patent: Re30678 (1981-07-01), Van Zeeland et al.
patent: 2637020 (1953-04-01), Stegall
patent: 2808566 (1957-10-01), Douma
patent: 3471784 (1969-10-01), Arndt et al.
patent: 3588611 (1971-06-01), Lambden et al.
patent: 3622872 (1971-11-01), Boaz
patent: 3746930 (1973-07-01), Van Best et al.
patent: 3775675 (1973-11-01), Freeze et al.
patent: 3855443 (1974-12-01), Bell, Jr. et al.
patent: 3869665 (1975-03-01), Kenmochi et al.
patent: 3878460 (1975-04-01), Nimmersjo
patent: 3911323 (1975-10-01), Wilson et al.
patent: 3914667 (1975-10-01), Waldron
patent: 4047235 (1977-09-01), Davis
patent: 4115828 (1978-09-01), Rowe et al.
patent: 4169260 (1979-09-01), Bayer
patent: 4214210 (1980-07-01), O'Shea
patent: 4245187 (1981-01-01), Wagner et al.
patent: 4316187 (1982-02-01), Spencer
patent: 4376243 (1983-03-01), Renn et al.
patent: 4387336 (1983-06-01), Joy et al.
patent: 4402030 (1983-08-01), Moser et al.
patent: 4466071 (1984-08-01), Russell, Jr.
patent: 4639817 (1987-01-01), Cooper et al.
patent: 4644439 (1987-02-01), Taarning
patent: 4658322 (1987-04-01), Rivera
patent: 4670812 (1987-06-01), Doerfler et al.
patent: 4697218 (1987-09-01), Nicolas
patent: 4771355 (1988-09-01), Emery et al.
patent: 4810954 (1989-03-01), Fam
patent: 4853818 (1989-08-01), Emery et al.
patent: 4858054 (1989-08-01), Franklin
patent: 4922368 (1990-05-01), Johns
patent: 4931894 (1990-06-01), Legatti
patent: 4949214 (1990-08-01), Spencer
patent: 5185684 (1993-02-01), Beihoff et al.
patent: 5185685 (1993-02-01), Tennies et al.
patent: 5185686 (1993-02-01), Hansen et al.
patent: 5185687 (1993-02-01), Beihoff et al.
patent: 5206596 (1993-04-01), Beihoff et al.
patent: 5208542 (1993-05-01), Tennies et al.
patent: 5223795 (1993-06-01), Blades
patent: 5224006 (1993-06-01), MacKenzie et al.
patent: 5280404 (1994-01-01), Ragsdale
patent: 5359293 (1994-10-01), Boksiner et al.
patent: 5432455 (1995-07-01), Blades
patent: 5434509 (1995-07-01), Blades
"Detection of Arcing . . . " Electric Power Research Inst. EPRI EL-2757, Dec. 1982.
"Directional Coupler . . . " Alejandro Duenas J., RF Design, Feb. 1986, pp. 62-64.
"Directional Couplers" Antonio Paolantonio, RF Design, Sep./Oct. '79, 40-49.
Two-page European Search Report (No. EP 93 90 0672) dated Jul. 9, 1995.
International Search Report for PCT/US96/02545 (Jul. 1996).
International Search Report for PCT/US96/02546 (Aug. 1996).

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