Metal-clad pressurized gas insulated high voltage switching...

Details Metal-clad pressurized gas insulated high voltage switching... Metal-clad pressurized gas insulated high voltage switching...

H - Electricity

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H01H 33/64 (2006.01) H01H 3/46 (2006.01) H01H 33/24 (2006.01)

Patent

CA 1134414

ABSTRACT The invention relates to metal clad, pressurized gas insulated high voltage switching apparatus. A movable contact rod crosses a switching gap in the "on" position and together with a coaxial field electrode can be moved into an intermediate position in which the field electrodes are close together while the contact rod is retracted from the gap. Wandering off of the arc produced during closing and opening is prevented by a lever linkage which is provided with driving links for the contact rod and the field elect- rode and which controls the motion cycles of the contact rod and the field electrode during the closing and opening process. The invention ensures that the field electrode moves, during the closing process as well as during the opening process, unequivocally and independently of heating, wear and manu- facturing tolerances.

331594

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