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Ceiling fan speed transformer

Discussion in 'General Electronics Discussion' started by turbogt16v, Jun 15, 2017.

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  1. turbogt16v

    turbogt16v

    173
    4
    Mar 27, 2015
    Hy, i am assembling celing fan with speed pot. I have lost pin layout papers.
    I goes from 220v to 60w.
    Faze is wired to ttansformer that has 3 pins F L Gr faza has to go in f or in l and come from f or l to fan,.
    Can i test the power of pind without geting fried, to be sure not to damage fan.
     
  2. Minder

    Minder

    3,004
    638
    Apr 24, 2015
    Are you sure this is a transformer? Normally ceiling fans are shaded pole and use a triac/dimmer style for control.
    I would guess that I is input (power) and F is Fan.
    M.
     
  3. Tha fios agaibh

    Tha fios agaibh

    2,106
    708
    Aug 11, 2014
    I recommend posting a picture of what your trying to hook up.
     
  4. Tha fios agaibh

    Tha fios agaibh

    2,106
    708
    Aug 11, 2014
    Exactly, it's probably L for line power, F for fan load, and Gr for ground
     
  5. turbogt16v

    turbogt16v

    173
    4
    Mar 27, 2015
    Here DSC_0049.JPG DSC_0048.JPG
     
  6. Robert_fay

    Robert_fay

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    34
    Jun 15, 2017
    Looking at this I would say L line power, F for fan, and Gr for ground also.
     
  7. turbogt16v

    turbogt16v

    173
    4
    Mar 27, 2015
    I hope you are right, will test tomorrow
     
  8. Tha fios agaibh

    Tha fios agaibh

    2,106
    708
    Aug 11, 2014
    Sorry, I can't see enough of actual circuit to say for sure.
    Normally, a fan rated dimmer is used in place of the wall switch.
    This is located on the fan itself, or the wall?
    the cable is coming from the fan load itself, or the household circuit?
    What is the fan voltage, 240v?
     
  9. Tha fios agaibh

    Tha fios agaibh

    2,106
    708
    Aug 11, 2014
    The odd thing is there should be a Neutral (grounded) terminal next to it.

    There is a possibility that L is for light if it has one attached.

    I wouldn't guess at this.

    I only see one cable. There should be one for line power (mains) and one for the load (the fan)
     
  10. Bluejets

    Bluejets

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    893
    Oct 5, 2014
    Unit shown is a choke. The two output cables are placed in series with the fan. The switch is a rotary type that switches out each tapping on the choke one at a time until the switch puts main supply direct on the motor for full speed. It makes no difference which line is which as far as L (line) and F ( fan) BUT the ground symbol is for an earth wire that connects to the choke laminations.
     
    Robert_fay likes this.
  11. Tha fios agaibh

    Tha fios agaibh

    2,106
    708
    Aug 11, 2014
    Ok, I see one cable on the top coming through the surface raceway, but I can't see where it goes. Then another below the rotary switch.
    I'm just used to seeing (on this side of the pond)a terminal strip with L, N and ground grouped together. It appears the neutral connection in this case is that loose blue wire barely visible under the rotary switch.
     
  12. Bluejets

    Bluejets

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    893
    Oct 5, 2014
    No neutral required.
     
  13. Tha fios agaibh

    Tha fios agaibh

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    708
    Aug 11, 2014
    The neutral connection from the cable must be landed somewhere, although it's not used by this device.
    I suspect the blue (N) from each cable are hooked together.
     
  14. Bluejets

    Bluejets

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    Oct 5, 2014
    Depends whether the installation loops at the fan or the control. Point being though that it has nothing to do with the operation of the choke shown.
     
  15. ramussons

    ramussons

    365
    70
    Jun 10, 2014
    Its a simple Choke with tappings in series with the fan to control speed. Had that on one of fans during the 60's.
     
  16. Tha fios agaibh

    Tha fios agaibh

    2,106
    708
    Aug 11, 2014
    Yes, bluejets already pointed this out although I'd prefer to call it a tapped inductor.
     
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