Telecommunications power distribution panel

Details Telecommunications power distribution panel Telecommunications power distribution panel

2000-10-31

2002-03-19

Paumen, Gary (Department: 2833)

Electrical connectors

With insulation other than conductor sheath

Insulating body having plural mutually insulated terminals...

C439S949000

Reexamination Certificate

active

06358099

ABSTRACT:

BACKGROUND OF THE INVENTION
This application relates to the art of power distribution and, more particularly, to distribution of DC power in telecommunications applications. Although the invention is particularly applicable to DC power distribution in telecommunications applications and will be described with specific reference thereto, it will be appreciated that the invention has broader aspects and can be used for other power distribution purposes.
The breaker amp capacity of conventional power distribution panels using bullet terminals is limited because bullet terminals inherently generate a significant amount of heat. Increasing the thickness of the bus bar used in the power distribution panel for better conductivity and heat dissipation is difficult because the metal tends to crack during bending or to warp when heated during bending if the metal thickness is greater than one-fourth inch.
It would be desirable to have an improved bus bar arrangement that provides a much higher amp capacity and less heat build-up than the bus bars in conventional power distribution panels. It also would be desirable to have a bus bar design that permits the use of bullet style breakers while providing amperage ratings above 70 amps and maintaining a sufficiently low temperature for approval by Underwriters Laboratories.
SUMMARY OF THE INVENTION
A distribution panel for telecommunications DC power includes a support of electrical insulating material having a plurality of parallel spaced-apart small metal power distribution blocks secured thereto for connection to telecommunications equipment. A large cast metal power supply bus bar is attached to the dielectric support for distributing power from the bus bar to the plurality of power distribution blocks. Holes in the power supply bus bar and the small distribution blocks receive bullet connectors for transferring power from the power supply bus bar to the individual distribution blocks.
In accordance with the application, the bus bar is cast in one-piece of copper and has a thickness greater than ¼th inch. In a preferred arrangement, the nominal thickness of the bus bar is at least 0.350 inch and more preferably at least 0.375 inch.
The one-piece cast copper bus bar of the present application includes a base having opposite ends and opposite sides. A pair of mounting flanges extend perpendicular to the base along one of the base sides adjacent the base opposite ends. A power distribution flange extends perpendicular to the base from the other base side in a direction opposite to the direction of the mounting flanges. The power distribution flange has projecting end portions that extend outwardly beyond the opposite ends of the base so that the power distribution flange has a length greater than the length of the base between the opposite base ends. The power distribution flange has a plurality of spaced-apart holes therein that receiving bullet connectors for transferring power from the bus bar to the power distribution blocks through a current interrupter such as a circuit breaker or fuse.
The bus bar has at least one splice flange thereon extending from the power distribution flange in parallel spaced relationship to the base. The length of the splice flange in a direction perpendicular to the power distribution flange is greater than the width of the base between its opposite sides.
It is a principal object of the present invention to provide an improved DC power distribution panel that is capable of withstanding heat generated by bullet connectors while providing an amperage rating greater than 70 amps.
It is also an object of the invention to provide an improved one-piece cast metal bus bar.


REFERENCES:
patent: 5172300 (1992-12-01), Morby et al.
patent: 5439396 (1995-08-01), Magdaleno
patent: 5486979 (1996-01-01), Bowen et al.
patent: 5726852 (1998-03-01), Trifiletti
patent: 5951324 (1999-09-01), Campbell et al.
patent: 6229692 (2001-05-01), Stendardo et al.

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