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  1. #1
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    Default Easy Star to Delta conversion

    This bandsaw IMG_20181125_102717.jpg is getting a VFD and it's current 1/2 hp three phase motor is being replaced with this IMG_20181130_095617-1.jpg 1hp 4 pole 3 phase star wound 415v motor from a recently acquired Waldown 3M which will get a metric motor to go with the metric only pulleys now available from Waldown.

    Finding and bringing out the wires joined to form the centre of the star was relatively easy so I have posted the process so others may decide to have a go if they has a motor that looks the same.

    IMG_20181130_114820-1.jpgIMG_20181130_115700-1.jpgIMG_20181130_180548-2.jpgIMG_20181130_191018-1.jpgIMG_20181130_193727-1.jpgIMG_20181130_195145-1.jpg

    Regards

    Eric

  2. #2
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    Murray Bridge S Aust.
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    Default

    Hi Eric, Thanks for the pics and "How To". I think I have an easier but lazy way of doing one? Answer, send it to you, along with $100.00.
    If I tried it, I'd probably electrocute myself!!!!!!!!!
    Kryn
    To grow old is mandatory, growing up is optional.

  3. #3
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    Sep 2008
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    Riddells Creek, Vic.
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    Default

    I did the same conversion to a Waldown motor a few years ago.
    Attached Images Attached Images

  4. #4
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    Quote Originally Posted by Techo1 View Post
    I did the same conversion to a Waldown motor a few years ago.
    Looks just like mine. Nice to know there is consistency in manufacture.

  5. #5
    BobL is offline Member: Blue and white apron brigade
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    Just a comment on the use of regular shrink fit and ordinary PVC insulated wiring to affect conversions. While it probably less of an issue in the case of smaller motors it's safer if higher temperature shrink fit is used, or cover regular heat shrink with fibreglass or silica sleeving. Instead of regular PVC insulated wiring I use the higher temperature rated silicone wiring found inside stoves. There are plenty of these on the sides of the road during council pickup times.

  6. #6
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    Quote Originally Posted by BobL View Post
    Just a comment on the use of regular shrink fit and ordinary PVC insulated wiring to affect conversions. While it probably less of an issue in the case of smaller motors it's safer if higher temperature shrink fit is used, or cover regular heat shrink with fibreglass or silica sleeving. Instead of regular PVC insulated wiring I use the higher temperature rated silicone wiring found inside stoves. There are plenty of these on the sides of the road during council pickup times.
    BobL

    Totally agree I should have included a photo of the wire I added to this motor to make it completely clear I had considered the temperature implications. Here is the silicon insulated wire I used. IMG_20181202_111221.jpg I also used a high melting point solder and heat shrink. Ideally I would like a source of fibreglass or silica sleeving too as yet I have not discovered one.

    Eric

  7. #7
    BobL is offline Member: Blue and white apron brigade
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    Quote Originally Posted by lamestllama View Post
    I also used a high melting point solder and heat shrink. Ideally I would like a source of fibreglass or silica sleeving too as yet I have not discovered one.
    I bought a 1m length from altronics a few years ago for about $5 and then Anorak Bob gave me a length and that has been enough for more than 15 motor conversions. Have also since found several old bar heaters by the side of the road and they had short lengths of the stuff inside.

  8. #8
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    Quote Originally Posted by BobL View Post
    I bought a 1m length from altronics a few years ago for about $5 and then Anoral Bob gave me a length and that has been enough for more than 15 motor conversions. Have also since found several old bar heaters by the side of the road and they had short lengths of the stuff inside.
    The SA version of Altronics is called AZtronics for some reason. Unfortunately it isn't open on weekends which is when I usually get the need. I will make a point of making sure I get some in. Is it in the Altronics catalogue? Also the fun of roadside collection is fast disappearing here with most council areas getting rid of the mass hard rubbish collection in favour of booked collection per household. It is a great pity it used to be a fantastic time for those bent on recycling.

    Eric

  9. #9
    BobL is offline Member: Blue and white apron brigade
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    Quote Originally Posted by lamestllama View Post
    The SA version of Altronics is called AZtronics for some reason. Unfortunately it isn't open on weekends which is when I usually get the need. I will make a point of making sure I get some in. Is it in the Altronics catalogue?
    https://www.altronics.com.au/search/...as%2Bsheathing,
    Jaycar also had it the last time I was there

    Also the fun of roadside collection is fast disappearing here with most council areas getting rid of the mass hard rubbish collection in favour of booked collection per household. It is a great pity it used to be a fantastic time for those bent on recycling.
    Ours has been cut from twice a year to once a year but is still a veritable gold mine for folks like me. The council also support people taking stuff from the piles as long as we leave the piles in a tidy state. We have the inevitable treasure hunters that come out the day before collections and do the rounds. My favourite is the bloke riding a pushbike towing a small trailer piled high with stuff tied down with ocky straps plus saddle bags over his front and back wheels.

  10. #10
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    Quote Originally Posted by BobL View Post
    https://www.altronics.com.au/search/...as%2Bsheathing,
    Jaycar also had it the last time I was there
    The vidaflex fibreglass sheathing has been dicontinued at jaycar https://www.jaycar.com.au/vidaflex-f...eving/p/WS5504 and its replacement https://www.jaycar.com.au/high-tempe...utm_medium=web just frays as you cut it IMO it is almost useless. I bought some to try on this motor and resorted to the high temp heat shrink.

    Eric

  11. #11
    Join Date
    Sep 2012
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    North Yorkshire UK
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    Hi Guys,

    I like the salvage and re-purpose of this thread !

    Anything domestic that gets hot will have heat resistant cabling in it ! From coffee machines to ovens and in some cases even washing machines.
    Best Regards:
    BaronJ.

  12. #12
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    Quote Originally Posted by lamestllama View Post
    Looks just like mine. Nice to know there is consistency in manufacture.
    Yes, it is the same type of CMG motor.

    CMG Motor.JPG

  13. #13
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    Quote Originally Posted by Techo1 View Post
    Yes, it is the same type of CMG motor.

    CMG Motor.JPG
    Nice work adding the terminal box with standard setup for swapping between wye and delta

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