Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1981-02-04
1982-08-03
Tolin, Gerald P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
335 76, 200153SC, H02B 104
Patent
active
043430309
ABSTRACT:
A compact load break switch having at least one vacuum interrupter connected between two terminals carried by respective insulating bushings through a current exchange assembly. The vacuum interrupter is disposed within one of the insulating bushings, and a current exchange insulating housing having portions which extend telescopically into both insulating bushings, provides adequate creepage distance through air from the vacuum interrupter and the current exchange assembly to a grounded housing for the load break switch. Also, a current transformer is disposed about the insulating housing to provide remote indication of the flow of fault current through the current exchange assembly. The switch operating mechanism includes: a torsion spring which when fully charged, is capable of opening and closing the switch several times; a motor driven spring charging mechanism, for fully recharging the torsion spring after each switch operation; a solenoid actuated latch mechanism which may be remotely actuated to open or close the switch; a lockout mechanism for preventing closure of the switch when the torsion spring has insufficient stored energy to open the switch thereafter without being recharged; auxiliary switches for remote indication of the position of the load break switch; and manually-opened mechanisms for recharging the torsion spring and operating the load break switch.
REFERENCES:
patent: 2410253 (1946-10-01), Trogner
patent: 3254186 (1966-05-01), Fischer
patent: 3577887 (1971-05-01), Lambert
patent: 3729065 (1973-04-01), Baskerville
patent: 3784764 (1974-01-01), Wilson
patent: 3789172 (1974-01-01), Cole et al.
patent: 3875360 (1975-04-01), Rys
patent: 3911240 (1975-10-01), Henderson et al.
Date K. Henry
Wainio Ronald
Ekstrand Roy A.
Gealow Jon Carl
McDonald Thomas F.
McGraw-Edison Company
Tolin Gerald P.
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