Switching aid device

Details Switching aid device Switching aid device

1984-08-06

1986-11-18

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 6, 361 8, H01H 930

Patent

active

046239480

ABSTRACT:
The switching aid device includes, in the case of a main static switch, (1), a switching aid capacitor (10), parallel connected to the main static switch (1) via a loading diode (11) and, parallel connected to the latter, a series set up formed by an anti-return diode (12), primary winding (13) of transformer (14) of which secondary winding (15) is connected to an energy recovery circuit on an electrical power source (4) via diode (16) and an auxiliary static switch (17) fitted with control means (20) for closing the auxiliary switch in presence of an inverse voltage at the terminals of loading diode (11) and for opening the auxiliary switch in absence of such voltage.

REFERENCES:
patent: 2849659 (1958-08-01), Kesselring
patent: 3184619 (1965-05-01), Zydney
patent: 3309570 (1967-03-01), Goldberg
patent: 4392172 (1983-07-01), Foley et al.

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