Electricity: circuit makers and breakers – Multiple circuit control – Operating means
Patent
1988-03-11
1989-05-02
Tolin, Gerald P.
Electricity: circuit makers and breakers
Multiple circuit control
Operating means
200 50C, 200148D, 200307, 361335, H02B 114, H02B 116
Patent
active
048270881
ABSTRACT:
A three-phase electrical ring main unit comprising a lower chamber module (30) having a wall structure formed from insulating resin material; three input contacts (35), one for each phase, mounted within the lower chamber; three lower switching contacts (37), each mounted within the lower chamber for movement between different switching positions; insulating closure means (55) closing the top of the lower chamber; three output contacts (49), one for each phase, carried by and exposed on a lower face of the closure means; three busbar contacts (59 to 61), each electrically connected to a respective output contact, carried by and exposed on an upper face of the closure member (55); an upper chamber module (31) having a wall structure formed from insulating resin material; means (32) securing the upper chamber above the lower chamber; three tee-off contacts (85), one for each phase, mounted within the upper chamber; and three upper switching contacts (83), each mounted in the upper chamber for movement between different switching positions; one switching position of the lower switching contacts effecting electrical connection between the input contacts and their associated output contacts; and one switching position of the upper switching contacts effecting electrical connection between the busbar contacts and their respective tee-off contacts.
REFERENCES:
patent: 4175221 (1979-11-01), Kellogg
patent: 4245137 (1981-01-01), Harai
patent: 4255633 (1981-03-01), Johnston
Adams Michael
Oakes Martin C.
Scully Graham D.
Lewen Bert J.
Sternberg Henry
Tolin Gerald P.
Y.S. Securities Limited
LandOfFree
Electrical ring main unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical ring main unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical ring main unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-586838