ARRANGEMENT IN AN ELECTRICAL MACHINE
Application 714/CHENP/2007 published 2007-08-24, filed 2007-02-19
The invention relates to an arrangement for indicating a fault in an electrical machine having a stator and a rotor with an air gap between it and the stator. In order to detect impurities or similar objects entering the air gap, a means of supervision is arranged on the stator surface facing the rotor. The means of supervision is at least partially protruding from the stator surface, and the integrity of the included detection element, such as a copper wire, is established using a supervision circuit connected to the detection element.
Applicant
1)ABB OY
:STROMBERGINTIE 1, FI-00980 HELSINKI, FINLAND Finland
Inventor
1)OLKANEN, KARI 2)IISAKKALA, JARKKO 3)JAPPINEN, JARI
International Info
Classification: H02K 11/00
Publication Number: WO 2006/018473 A2
Application Date: 2005-07-29
Priority Information
20041098 Finland 2004-08-19