Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1987-09-01
1988-12-13
Scott, J. R.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361335, 361347, 200 50AA, 200144R, H02B 100
Patent
active
047915307
ABSTRACT:
A barrier system is provided for electrical switchgear having an enclosure and one or more access openings. The barrier system comprises a plurality of barriers, each of which is a generally planar member. The barrier system further includes manually operable provisions for releasably securing each barrier in respective predetermined positions, and a guide and support member carried by the enclosure and engaged by the lower edge of the rear portion of each barrier during insertion and also when the barriers are in a predetermined inserted operating position. The guide and support member directs the barrier into the appropriate position when the barrier is within a predetermined range of position with respect to the guide and support member. In a specific embodiment, the manually operable provisions include a fastening device which is retained by the barrier and a cooperating receptacle retained by the enclosure. The fastening device is preferably is a fractional-turn wing-head stud. Additionally, the guide and support member in a specific embodiment includes a tapered guide surface narrowing to a receiving slot for each of the removable barriers.
REFERENCES:
patent: 4071722 (1978-01-01), Hart
patent: 4689716 (1987-08-01), Cooper et al.
S&C Descriptive Bulletin 662-30 (p. 14), dated Sep. 8, 1986, entitled "S&C Manual PMH and PMS Pad-Mounted Gear".
S&C Instruction Sheet 662-505 (pp. 5,7), dated Mar. 26, 1984.
S&C Descriptive Bulletin 834-30 (pp. 8, 12a, and 13) dated Nov. 19, 1973.
Transmission & Distribution (p. 17), Jul. 1976 (related to Electrical Equipment Inc. three-phase removable barrier system).
Estey John W.
Kalvaitis Arvydas J.
Lapacek James V.
S&C Electric Company
Scott J. R.
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