Method for determining wear of a switchgear contacts

Details Method for determining wear of a switchgear contacts Method for determining wear of a switchgear contacts

2006-09-19

2006-09-19

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Electromechanical switching device

Relay

C324S423000

Reexamination Certificate

active

07109720

ABSTRACT:
In a switching device, a method and device for determining the wear of the pole contacts (C1, C2, C3) actuated by an electromagnet (20) whose movement is controlled by an excitation coil (21) by the variation of a contact wear distance travel time (Tu) generated during an electromagnet closing movement, by measuring at least one electrical signal (Ip) representing the conducting state of at least one power pole, by measuring an excitation current (Is) passing through the coil (21) of the electromagnet and by comparing the electrical signal (Ip) and the excitation current (Is) as a function of time. The measured wear distance travel time (Tu) can then be compared with an initial travel time (Ti) stored in the switching device.

REFERENCES:
patent: 4319193 (1982-03-01), Boccali et al.
patent: 4532499 (1985-07-01), Collin et al.
patent: 4780786 (1988-10-01), Weynachter et al.
patent: 5488530 (1996-01-01), De Jong
patent: 5648917 (1997-07-01), Ebersohl et al.
patent: 5844331 (1998-12-01), Kieser et al.
patent: 6225807 (2001-05-01), Pohl
patent: 6313636 (2001-11-01), Pohl et al.
patent: 6359440 (2002-03-01), Pohl et al.
patent: 6466023 (2002-10-01), Dougherty et al.
patent: 6522247 (2003-02-01), Maruyama et al.
patent: 19734224 (1999-02-01), None
patent: 97/28548 (1997-08-01), None

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