Motor starter circuit

Details Motor starter circuit Motor starter circuit

2007-04-26

2009-12-08

Leykin, Rita (Department: 2837)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

C361S023000, C361S033000, C318S727000, C318S805000, C318S785000, C318S786000, C318S751000

Reexamination Certificate

active

07630180

ABSTRACT:
The invention concerns a motor starter circuit for an induction motor, particularly a single-phase AC induction motor, with a main winding (4) and an auxiliary winding (5) supplied with current, particularly AC, via current supply connections (24, 25), and with a starter switch arrangement (15), which serves the purpose of interrupting the current flow through the auxiliary winding (5) after the start of the motor, the starter switch arrangement (15) interacting with a measuring arrangement serving the purpose of measuring the voltage across the auxiliary winding (5).In order to optimise the motor starter circuit with regard to operation safety, a protection fuse (30) and a protection switch arrangement (47) are connected in series between the current supply connections (24, 25) so that, when the protection switch arrangement (47) is closed, the current flows in such a manner through the protection switch arrangement (47; 77) and the protection fuse (30) that the protection fuse (30) is triggered to interrupt the current flow.

REFERENCES:
patent: 3562587 (1971-02-01), Forst
patent: 3668489 (1972-06-01), Erdman
patent: 3766457 (1973-10-01), Fink et al.
patent: 3792324 (1974-02-01), Suarez et al.
patent: 3803866 (1974-04-01), Barry
patent: 4022598 (1977-05-01), Gucwa, Jr. et al.
patent: 4119884 (1978-10-01), Blumenberg et al.
patent: 4366426 (1982-12-01), Turlej
patent: 4378520 (1983-03-01), Ford
patent: 4455521 (1984-06-01), Day et al.
patent: 4605888 (1986-08-01), Kim
patent: 4674021 (1987-06-01), Sachs
patent: 4772808 (1988-09-01), Vial
patent: 4782278 (1988-11-01), Bossi et al.
patent: 4786850 (1988-11-01), Chmiel
patent: 4820964 (1989-04-01), Kadah et al.
patent: 4843295 (1989-06-01), Thompson et al.
patent: 4862053 (1989-08-01), Jordan et al.
patent: 5041771 (1991-08-01), Min
patent: 5051681 (1991-09-01), Schwarz
patent: 5103154 (1992-04-01), Dropps et al.
patent: 5296795 (1994-03-01), Dropps et al.
patent: 5302885 (1994-04-01), Schwarz et al.
patent: 5345126 (1994-09-01), Bunch
patent: 5488834 (1996-02-01), Schwarz
patent: 5528120 (1996-06-01), Brodetsky
patent: 5808441 (1998-09-01), Nehring
patent: 5818122 (1998-10-01), Miyazawa et al.
patent: 6320348 (2001-11-01), Kadah
patent: 6982539 (2006-01-01), Ward
patent: 6989649 (2006-01-01), Mehlhorn
patent: 2004/0263109 (2004-12-01), Schwarz
patent: 2005/0184699 (2005-08-01), Unno
patent: 197 35 552 (1999-02-01), None
patent: 19741828 (1999-03-01), None
patent: 102004018966 (2005-12-01), None
patent: 0 294 118 (1988-12-01), None
patent: 0 571 956 (1993-12-01), None
patent: 0 356 310 (1994-03-01), None
patent: 0 802 621 (1997-10-01), None
patent: 0924735 (1999-06-01), None
patent: 1 315 279 (2003-05-01), None
patent: 1494346 (2005-01-01), None
patent: 1 240 709 (2005-11-01), None
patent: 1 619 786 (2006-01-01), None
patent: 58-107069 (1983-06-01), None
patent: 60-32583 (1985-02-01), None
patent: 10-225 156 (1998-08-01), None
patent: 99/09575 (1999-02-01), None
patent: 01/69147 (2001-09-01), None
patent: 2006/001601 (2006-01-01), None
U.S. Appl. No. 11/935,731 entitled “Motor Start Circuit” filed Nov. 6, 2007 in the name of Schmidt et al.
U.S. Appl. No. 11/776,246 entitled “Motor Start Circuit” filed Jul. 11, 2007 in the name of Schmidt et al.
Chapter 17, Transient Suppressors and Surge Suppressors, pp. 17-1 to 17-17; Robust Electronic Design Reference Book, vol. I, vol. 2, Appendices, 2004.
“Overvoltage Crowbar Sensing Circuit”; Publication No. MC3423/D, Mar. 2005—Rev. 5, pp. 1, 3 and 4.
“Over Voltage Protection”; http:/www.mitedu.freeserve.co.uk/Design/overvoltage.htm; pp. 1-2; Aug. 10, 2005.

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