Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1983-03-25
1985-02-19
Pellinen, A. D.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148R, H01H 3316
Patent
active
045007624
ABSTRACT:
A disconnecting switch including a hollow cylindrical shield of an electrically conducting material including a circular opening, a spring loaded arcing contact member, a main stationary contact member disposed within the shield to be slightly spaced from the plane of the opening and surround the arcing contact member, and a toroidal electrode disposed in the opening and having a curved surface externally protruding beyond the plane of the opening. The arcing and main contact members are connected to the shield while the electrode is connected to the shield through a resistor. At the open position the arcing contact member slightly protrudes beyond the plane of the opening. At the closed position a movable contact member engages both the main contact member and the arcing contact member at its retroggessing position.
REFERENCES:
patent: 3549841 (1970-12-01), McLoud et al.
Interrupting Performance of Capacitive Current by Disconnecting Switch for Gas Insulated Switchgear, by: S. Narimatsu et al., published Jun. 1981, IEEE Transactions on Power Apparatus and Systems, vol. PAS-100, No. 6, pp. 2726-2732.
Ginsburg Morris
Mitsubishi Denki & Kabushiki Kaisha
Pellinen A. D.
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