H - Electricity – 02 – B
Patent
H - Electricity
02
B
306/327
H02B 13/02 (2006.01) H01H 3/32 (2006.01)
Patent
CA 1169112
ABSTRACT OF THE DISCLOSURE High-voltage switchgear includes one or more poly-phase switches, each in its own module, which are opened and closed by respective stored-energy operators. If energy stored in any operator is released by the action of either an electrical sensor or a hand lever to operate its switch, an electric motor-driven facility or a human-manipulated facility restores energy thereto. Release of the stored energy by the hand lever is blocked during an ongoing restoration of the stored energy by either energy-restoring facility. Also, ongoing restoration of the energy by the human-manipulated facility prevents both operation of the motor- driven facility and release of the energy by the electrical sensor. Each operating mechanism may be selectively coupled to and decoupled from its switch regardless of the presence or absence of stored energy in the operator; if energy is stored when decoupling is attempted, facilities permit the safe dissipation thereof, as necessary, without damage to the switch or the operating mechanism. The switch is locked in its extant position before decoupling is achieved and is unlocked when recoupling occurs. Various indicators visually inform of the position (opened, closed) of each switch, the position (switch open, switch closed) and condition (charged, uncharged) of each operator, and the status (coupled, decoupled) of each switch-operator pair.
430807
Evans David M.
Swanson Roy T.
Osler Hoskin & Harcourt Llp
S. & C. Electric Company
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