Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1994-01-18
1995-01-31
Wysocki, Jonathan
Electricity: motive power systems
Limitation of motor load, current, torque or force
361 31, H02P 300
Patent
active
053861833
ABSTRACT:
A motor control unit for protecting a motor against ground fault currents. The unit monitors the currents in each phase of the motor to provide values representative of each phase current. The unit also includes a contactor for opening and closing each phase, wherein the unit controls the contactor based upon the values representative of the phase currents. The contactor is opened when a ground fault situation exists at the motor.
REFERENCES:
patent: 3202877 (1965-08-01), Perrault
patent: 3543124 (1970-11-01), Espen et al.
patent: 3727103 (1973-04-01), Finch et al.
patent: 3809960 (1974-07-01), Jossic
patent: 3845354 (1974-10-01), Boothman et al.
patent: 3851216 (1974-11-01), Clarke et al.
patent: 3875464 (1975-04-01), Gary et al.
patent: 3890494 (1975-06-01), Meshek et al.
patent: 3919600 (1975-11-01), Sons et al.
patent: 3932789 (1976-01-01), Sons et al.
patent: 4021700 (1977-05-01), Ellis-Anwyl
patent: 4057842 (1977-11-01), Bauman et al.
patent: 4096539 (1978-06-01), Scaturro
patent: 4099107 (1978-07-01), Eder
patent: 4286303 (1981-08-01), Genheimer et al.
patent: 4319298 (1982-03-01), Davis et al.
patent: 4345288 (1982-08-01), Kampf et al.
patent: 4351012 (1982-09-01), Elms et al.
patent: 4377836 (1983-03-01), Elms et al.
patent: 4414601 (1983-11-01), Conroy, Jr.
patent: 4423458 (1983-12-01), Stich
patent: 4423459 (1983-12-01), Stich et al.
patent: 4434390 (1984-02-01), Elms
patent: 4446498 (1984-05-01), Stich
patent: 4453117 (1984-06-01), Elms et al.
patent: 4456867 (1984-06-01), Mallick, Jr. et al.
patent: 4456871 (1984-06-01), Stich
patent: 4467260 (1984-08-01), Mallick, Jr. et al.
patent: 4470092 (1984-09-01), Lombardi
patent: 4535409 (1985-08-01), Jindrick et al.
patent: 4539618 (1985-09-01), Stich
patent: 4544982 (1985-10-01), Boothman et al.
patent: 4547826 (1985-10-01), Premerlani
patent: 4571659 (1986-02-01), Demeyer et al.
patent: 4578758 (1986-03-01), Muller
patent: 4581569 (1986-04-01), Fujioka et al.
patent: 4608619 (1986-08-01), Bomer et al.
patent: 4647825 (1987-03-01), Proflo et al.
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4689710 (1987-08-01), Anzai
patent: 4695961 (1987-09-01), Arinobu
patent: 4743818 (1988-05-01), Quayle et al.
patent: 4757242 (1988-07-01), Prather
patent: 4819125 (1989-04-01), Arinobu et al.
patent: 4891743 (1990-01-01), May et al.
patent: 4979069 (1990-12-01), Simpson
patent: 4996646 (1991-02-01), Farrington
patent: 5086366 (1992-02-01), Ishii et al.
patent: 5086367 (1992-02-01), Ishii et al.
Kraus & Naimer Microelectronics; IPS 1100; 12 pages.
Startco Engineering Ltd.; MPU-16A; Jul., 1988, 6 pages.
Multilin Inc.; 139 Series Motor; Protection Relays, 8 pages.
Multilin Inc.; 169 Motor Management Relay; 94 pages.
Macrotek; Motor protection Plus; 19 pages.
European Standard Search Report; #EP 89 11 0603 (Aug. 9, 1989).
Westinghouse, IQ-2000 TM Document; 32 pages.
Gemstart Integrated Motor control Centre; General Electric Company; 1986; 8 pages.
IQ-1000 Motor Protection System User's Manual; Westinghouse; 32 pages.
Cronvich James T.
Culligan John J.
De Cicco Daniel J.
Farag Samir F.
Siemens Energy & Automation Inc.
Wysocki Jonathan
LandOfFree
Method and apparatus for sensing a ground fault in a motor contr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for sensing a ground fault in a motor contr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for sensing a ground fault in a motor contr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1104578