Patent · US Expired

Electrical machine

US6836053B2 · kind B2 · utility

1Cited by

7References

13Claims

0Family size

Assignee

ALSTOM Technology Ltd · CH

Inventors

Hermfred Gohn · Wehr, DE
Claudio Picech · Lenzburg, CH
Ralf Rotzinger · Gernsbach, DE
Alfred Ziegler · Munich, DE

Key dates

Filing date	Apr 19, 2002
Grant date	Dec 28, 2004
Priority date	—
Expiry date	Jul 24, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02K3/51
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The object of the invention is to provide improved protection for the insulation of the rotor end windings of electrical machines that is suitable in particular for electrical limit-rating machines. This is achieved by the rotor end bell (2) consisting of steel and the retaining ring liner sheet (10), spatially separating the end winding insulation (9) from the rotor end bell (2), consisting of titanium or a titanium alloy. Moreover, a lubricant (11) with a temperature stability of >300° C. is applied between the retaining ring liner sheet (10) and the rotor end bell (2).

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