Rewind Stator Winding Alternator | Insulation Materials Needed

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Discussion Overview

The discussion revolves around the materials needed for rewinding the stator winding of an automotive alternator, focusing on insulation materials and techniques. Participants explore various options and methods related to insulation in this context.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant suggests that the insulation materials required depend on the previous winding method used.
  • Another participant proposes using a 'U' shaped section of thin sheet insulation material in each stator slot, along with rectangular coils that can be progressively inserted.
  • It is mentioned that enamelled copper wire is typically used for alternators, and insulation paper or cloth is necessary, with specific materials like Electrical Insulation Fiber Paper and Nomex-410 being recommended.
  • A participant inquires about the specific type of cloth material used for insulation between the copper winding and the steel body of the alternator.

Areas of Agreement / Disagreement

Participants generally agree on the need for insulation materials but present varying opinions on the specific types and methods to be used, indicating that multiple views remain on the best approach.

Contextual Notes

Some assumptions about the previous winding method and the specific requirements for insulation materials are not fully detailed, leaving room for interpretation and further clarification.

souky101
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I want to rewind the stator winding of an automotive alternator.
Want insulation materials I need for that ?

Thanks for help

Sam
 
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It will depend on how it was done previously.
You will probably need to put a 'U' shaped section of thin sheet insulation material into each slot of the stator.

Then wind rectangular coils that can be knocked into the 'U' slots progressively until all the coils are in place. If you can get copper wire with thermal setting insulation, you can heat the winding to glue it in place once you are happy with the windings.
 
As @Baluncore explained it depends on how it was done previously. However, I'll like to share some points. Usually, enamelled copper wire is used with the alternator. You simply need some sort of insulation paper or clothes for this purpose. You can use any of the following:
  1. Electrical Insulation Fiber Paper Fish Paper This usually comes in the size 20" x 20" x .01"
    s-l1600.jpg
  2. Nomex-410-Insulation-Paper-10mil-thick-0-25mm-5-25-034-w-continuous-sheet
    s-l1600.jpg
And here is the way you can insert in in:
F5O1H64GA1BGG0Z.MEDIUM.jpg

In a nutshell, you simply need an insulation foil for providing insulation.
 
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Likes   Reactions: jim hardy
Thanks for your reply.
In the third photo I can see some kind of cloth material inserted in each slot to insulate the copper winding from the steal body.

What type of this cloth material used ?

Thanks for help.

Sam
 

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