Three- or four-pole low-voltage power switch with Rogowski...

Details Three- or four-pole low-voltage power switch with Rogowski... Three- or four-pole low-voltage power switch with Rogowski...

2007-12-18

2007-12-18

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of ground fault indication

C361S042000

Reexamination Certificate

active

10591461

ABSTRACT:
A three or four pole low-voltage power switch is disclosed wherein the switch is partly provided with a device for detecting ground faults. For this purpose, the current vectorial sum must be produced in the three or four conductors of a monitored network. For the switches of this type, output signals received from Rogowski coils are directed via resistances to an integration capacitor whose voltage forms an input signal of another measuring amplifier representing the current sum of a monitored network. The output signal of the measuring amplifier is, afterwards processed in a known manner in the microprocessor of an excess-current trip.

REFERENCES:
patent: 4933630 (1990-06-01), Dupraz
patent: 7180717 (2007-02-01), Kojovic et al.
patent: 26 56 817 (1978-06-01), None
patent: 31 15 522 (1982-11-01), None
patent: 24 27 525 (1984-12-01), None
patent: 36 42 136 (1989-11-01), None
patent: 39 41 882 (1991-06-01), None
patent: 41 11 831 (1992-10-01), None
patent: 42 04 515 (1993-08-01), None
patent: 198 28 890 (2000-02-01), None
patent: 198 54 436 (2000-06-01), None
patent: 100 54 496 (2002-05-01), None
patent: 0 939 472 (1999-09-01), None
Drachsel, R.: “Grundlagen der elektrischen Meβtechnik”, VEB-Verlag Technik, Berlin, 1983, 7. Auflage, Seite 150-153.

Affiliated with

Also associated with

Rating

Three- or four-pole low-voltage power switch with Rogowski... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Three- or four-pole low-voltage power switch with Rogowski..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three- or four-pole low-voltage power switch with Rogowski... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3832158