Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1991-06-26
1993-09-07
Scott, J. R.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01H 3342
Patent
active
052431606
ABSTRACT:
A gas-filled circuit breaker includes a hermetically sealed tank formed by a surrounding wall filled with an insulating gas, at least one pair of contacts which are arranged in the inside of the surrounding wall, and a contact operating device for connecting the contacts to each other for conducting electricity therebetween and separating the contacts from each other for interrupting the electricity therebetween. The contact operating device includes a force generating device for generating a force for operating the contacts, and the contact operating device is arranged outside of the surrounding wall. A rotational shaft device is connected to the force generating device outside of the surrounding wall and extends from the outside of the surrounding wall to the inside thereof so that the force generated by the force generating device is transmitted through the surrounding wall to the inside thereof. A seal device is arranged between the surrounding wall and the rotational shaft device to maintain a hermetic seal therebetween, and at least two bearings rotatably support the rotational shaft device; and a connecting device for transmitting the force from the rotational shaft device to at least one of the contacts is moved in relation to another one of the contacts, wherein the connecting device is connected to the rotational shaft device between the bearings.
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Fukuchi Tetsuo
Hokutou Hiromichi
Ohno Masatomo
Suzuki Akira
Hitachi , Ltd.
Scott J. R.
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