Rower circuit-breaker having a closing resistor

Details Rower circuit-breaker having a closing resistor Rower circuit-breaker having a closing resistor

1996-11-18

1998-09-29

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Resistance inserting

215 78, 215 84, H01H 3316, H01H 942

Patent

active

058147829

ABSTRACT:
The power circuit-breaker is provided with at least one arcing chamber which extends along a central axis and has at least one power interruption point with at least one contact which is moved by a drive. A closing resistor is connected in series with the power interruption point, having a resistive contact which is connected in parallel with the closing resistor and which closes after the power interruption point during the connection operation and opens after the power interruption point during the disconnection operation. This power circuit-breaker has a closing resistor and a resistive contact which has a simple and space-saving structure and which accurately timed actuation of the resistive contact is achieved. The resistive contact is mechanically connected to the at least one moving contact rectilinearly along at least one axis. Also, a coupling element is interposed in the rectilinear mechanical connection, and the coupling element is designed in such a way that it effects a time delay both during the connection operation and during the disconnection operation.

REFERENCES:
patent: 3763340 (1973-10-01), Noack
patent: 4072836 (1978-02-01), Bischofberger et al.
patent: 4338500 (1982-07-01), Pham Van et al.
patent: 4421962 (1983-12-01), Thuries et al.
patent: 4434333 (1984-02-01), Kawasaki
patent: 4608470 (1986-08-01), Bischofberger et al.
patent: 4636599 (1987-01-01), Talir
patent: 4670632 (1987-06-01), Bischofberger et al.
patent: 4973806 (1990-11-01), Kirchesch et al.
"The closing resistor for SF.sub.6 circuit-breakers from 170 kV up to 800 kV", Siemens AG publication, Sep. 1981.

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