Low cost surge protection

Details Low cost surge protection Low cost surge protection

2007-12-25

2007-12-25

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

C361S120000, C361S127000

Reexamination Certificate

active

10754739

ABSTRACT:
A motor drive for an electric machine includes a live line, a second line, and a ground line. A surge protector includes a first varistor and a gas discharge tube (GDT) that is non-conductive below a trigger voltage and that is conductive above the trigger voltage. The first varistor and the GDT are connected in series between one of the live line and the second line and the second line and the ground line. A second varistor is connected between the other of the live line and the second line and the second line and the ground line. When a voltage on the live line exceeds the trigger voltage, the first varistor, the second varistor and the GDT limit voltage output to the electric machine and deliver excess voltage to the ground line.

REFERENCES:
patent: 4023071 (1977-05-01), Fussell
patent: 4340853 (1982-07-01), Braun et al.
patent: 5319533 (1994-06-01), Reynolds et al.
patent: 5321575 (1994-06-01), Shilo
patent: 5555150 (1996-09-01), Newman, Jr.
patent: 5606232 (1997-02-01), Harlan et al.
patent: 5619105 (1997-04-01), Holmquest
patent: 6496015 (2002-12-01), Stanford et al.
patent: 2002/0163820 (2002-11-01), Nakamura
patent: 2003/0086225 (2003-05-01), Chaudhry et al.
patent: 2004/0169970 (2004-09-01), Deines et al.
patent: 2005/0083628 (2005-04-01), Holzenthal, Jr.
patent: 19523292 (1996-11-01), None
patent: 2175156 (1986-11-01), None

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