H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/327
H01H 9/22 (2006.01) H01H 3/30 (2006.01)
Patent
CA 1118827
ABSTRACT OF THE DISCLOSURE An improved operator for a high-voltage switch. Prior art operators have a drive member connected to the switch for operation thereof. Immediately after the switch is opened, the drive member is held by a first latch and a spring is automatically charged to bias the drive member to close the switch. When the first latch selectively releases the drive member, it moves to close the switch. Immediately thereafter, the drive member is again held by a second latch and the spring is automatically charged to bias the drive member to open the switch. When the second latch releases the drive member, it now moves to open the switch. In prior art operators,; the latches sometimes fail to immediately hold the drive member rendering ineffective attempts to recharge the spring. A control system is provided which permits charging of the spring only If the respective latches hold the drive member following a switch operation. The system also reinitiates the prior charging of the spring if, after the drive member moves to operate the switch, the respective latches do not hold the drive member. Reinitiation of the spring charging holds the drive member until the latches succeed in holding it.
349207
Osler Hoskin & Harcourt Llp
S&c Electric Company
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