Earth cooled distribution transformer system and method

Details Earth cooled distribution transformer system and method Earth cooled distribution transformer system and method

1998-07-20

2000-02-29

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361 38, 16510414, 336 89C, 337 17, 174 18, 174 16R, H05K 720

Patent

active

060317221

ABSTRACT:
An earth cooled distribution transformer system and a method of cooling same and distributing electrical power to a plurality of consumer loads (31) is described. A distribution transformer (10 is provided with the primary (16) and secondary (17) windings encapsulated in a solid insulating material. The steel magnetic core (13) remains exposed and the transformer is buried in ground at a predetermined depth with the core (13) exposed whereby heat generated by the windings is dissipated into the earth through the exposed magnetic core. The high voltage supply cable (20) may be a buried cable or is at least partly buried as well as the power distribution cable (21), which feeds power to one or more consumer loads. The power distribution transformer (10) may be buried adjacent a manhole enclosure (12) with the primary and secondary winding power cables being connected to terminals (22-25) accessible in the manhole. A series of power distribution transformers (10) and supply cables (20) as well as feed cables (12) may be buried in ground in a network to feed an entire residential area without the need to provide insulating casings or even manhole enclosures.

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