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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kentli, F. Terzi, U.K. Salman, S. |
| Copyright Year | 2001 |
| Description | Author affiliation: Dept. of Electr. Educ., Marmara Univ., Istanbul, Turkey (Kentli, F.) |
| Abstract | Summary form only given. As is known, electric motors and generators are varnished for insulation after winding. These varnished coils are formed in stiff construction in the slot. Because of heavy-duty conditions, whole or a part of coils could become burned out or broken. There are two main methods to remove the defective coils. These are thermal method and chemical method. In this study, the burning method of varnish in flame burning room is studied. In the thermal method, either a voltage is applied to defective coils by using a high-power autotransformer (variac) and a short-circuit current flows until all varnish is burned, or, if all of the coils are out of order, varnish is burned by putting the stator or armature in a burning room. The effect of the heat applied in this stage to structure of material and magnetic characteristics of the armature have been investigated. The relations between magnetic characteristics and metallurgical structure of material and their solutions have been emphasized under laboratory and service conditions. |
| Sponsorship | IEEE Ind. Applications, Power Electron., & Power Eng. Soc |
| File Size | 141277 |
| File Format | |
| ISBN | 0780370910 |
| DOI | 10.1109/IEMDC.2001.939359 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-06-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Coils Magnetic materials Electric motors Dielectrics and electrical insulation Chemicals Fires Voltage Out of order Stators Inorganic materials |
| Content Type | Text |
| Resource Type | Article |
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