Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1975-04-01
1976-11-09
Tolin, Gerald P.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
317103, 200 50AA, H02B 900
Patent
active
039913481
ABSTRACT:
Disclosed is an apparatus for restricting access to the electrically charged portions within metal enclosed high voltage switchgear. The apparatus is adapted for use with a tool that can be inserted into the enclosure to open a tap switch and remove a series connected high voltage fuse. Normally, access ports into the metal enclosure are closed by pivotably mounted covers to restrict access. Insertion of the tool into a receptacle around the access port opens the covers so that a portion of the tool can be inserted into the enclosure to open the tap switch thereby isolating the fuse and to engage the fuse so that it can be removed. The tool engages a ring member mounted around the access port so that operation of the tool moves the ring member. Operably connected to the ring member is an indicator member that moves in response to movement of the ring member to align an appropriate message in front of a window in the enclosure so that the condition of the switchgear is indicated. Also, the metal portions of the tool are grounded to prevent possible electrical shock to the tool operator.
REFERENCES:
patent: 3283215 (1966-11-01), Lohmeyer
patent: 3339118 (1967-08-01), Harner
patent: 3727109 (1973-04-01), Kozlovic
patent: 3842381 (1974-10-01), Bernatt
S & C Electric Company
Tolin Gerald P.
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