Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by retailer

  1. retailer

    2 Speed 3ph motor rewind - assistance needed.

    Hello Zlatkodo I have finished the rewind, it looks OK but not as neat as a real motor winder would have done, I did have to stop and pull out the coils part way through as I could see that the coils were a bit on the small side, it was also compounded by the fact that the motor is small (rotor...
  2. retailer

    2 Speed 3ph motor rewind - assistance needed.

    Yes Zlatkodo I can see the error it is though a typo as one of the "B" winding coils occupies slot 6, thank you for the winding layout and connections I appreciate you taking the time. The motor winder that rewound the motor for single phase did give me the original winding layout and...
  3. retailer

    2 Speed 3ph motor rewind - assistance needed.

    Thanks for the advice - however I don't believe this is a complex winding job and I also don't believe Electrical Trade Associations are operated as secret societies keeping knowledge away from the uninitiated. I did ask a similar question a few years back when I first decided to go down this...
  4. retailer

    2 Speed 3ph motor rewind - assistance needed.

    Andiri sounds like you have a similar machine - mine is an Arboga made in Sweeden. My machine was originally 415v 3 phase 2 speed and the most cost effective way for me to get it running was to have the motor rewound for single phase with 2 speeds - it was partially successful. Hi speed was...
  5. retailer

    2 Speed 3ph motor rewind - assistance needed.

    Some time back I asked a question on motor winding layout and connections and received helpful replies and assistance, the plan was to return a small milling machine 2 speed (Dahlander) 3ph motor that had been rewound for 240v single phase back to 3 phase. Back when the single phase winding had...
  6. retailer

    3ph motor winding

    lukin I believe this is their web page http://www.arbogamachinery.com/startsida/ I emailed them using the email address in the contact info at the bottom of the page.
  7. retailer

    3ph motor winding

    Thank you motorwinder for the double Wye connection and thank you rhatcher for the explanation and for guiding me in the right direction, it is much appreciated. I already have an almost full 10kg spool of .67mm wire and would prefer to go this way, from experience with transformers, bifilar...
  8. retailer

    3ph motor winding

    rhatcher:- Thanks for the explanation regarding the differences in torque between the different connection setups, it is obviously better to connect the motor as a double Y for high speed and use the VFD to get the low speed, I did see this mentioned on another forum but there was no explanation...
  9. retailer

    3ph motor winding

    I believe the original motor was connected in Delta mode (4poles) for low speed and double Y (2 poles) for high speed, my plan was to use the same setup and run the motor in Delta mode for low speed and omit the leads that would enable it to be connected as a double Y motor, then use the VFD...
  10. retailer

    3ph motor winding

    The machine in question is a mid 1950's manufacture Arboga, I have emailed Arboga and they have referred me back to the motor winder that changed the motor from 3ph to 1ph for me, I have lost conact with him, the workshop he operated from has been turned into a row of townhouses, it has after...
  11. retailer

    3ph motor winding

    I have a milling machine that has the gearbox and motor share the same casting, it was originally 415v 3ph 50hz 2 speed, this coupled with a 4 speed gearbox gave 8 speeds. At the time as I only had a single phase supply and also as VFD'd were out of my reach pricewise I had a local winder...
See more

Part and Inventory Search

Back
Top