Insulation material for electrical machines
US7015396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2002 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Sep 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention improves the heat resistance and strength of insulation material inserted between a core and a coil of an electrical machine. A slot liner is placed between a core of an electric motor of an electric machine and a conductor of a coil. The slot liner has a multi-layer construction with an aggregate mica insulation sheet, which has excellent mechanical strength, and a peeled mica insulation sheet, which has excellent voltage resistance at high temperatures. The slot liner can include a main insulation sheet and a reinforcement sheet. The reinforcement sheet is placed between the main insulation sheet and the core at the ends of the slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.