Patent · US Active

Dry transformer heater

US9171662B2 · kind B2 · utility

1Cited by

5References

20Claims

0Family size

Assignee

ABB TECHNOLOGY AG · CH

Inventors

Marcos Bockholt · Paderborn, DE
Frank Cornelius · Orlando, US
Jens Tepper · Wolfenbüttel, DE
Burak Esenlik · Paderborn, DE
Bhavesch Patel · Brilon, DE
Benjamin Weber · Winterberg, DE

Key dates

Filing date	Oct 11, 2013
Grant date	Oct 27, 2015
Priority date	—
Expiry date	Nov 7, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH01F27/402
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A dry-type transformer heater includes a closed housing, and at least one transformer winding arranged in the housing. The at least one transformer winding includes at least one corresponding winding conductor and a corresponding insulation layer surrounding the transformer winding, respectively. In addition to the respective winding conductor, at least one coil heating wire is provided in at least one of the insulation layer and on the surface of the insulation layer to input thermal power into the respective insulation layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.