Submersible pump wires identification

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Gassan, Apr 9, 2019.

  1. Gassan

    Gassan New Member

    Joined:
    Apr 9, 2019
    Location:
    Maldives
    Hi All,

    I got a three phase submersible pump that I have to test by putting it into the mains. I'm afraid to test it because I'm not really sure whether it's a three phase or a single phase motor.

    There are six leads. The internal connections are not visible because they are within the enclosure. I don't want to disassemble it just to see the connections as doing so might lead to risk of water leakage in the future.

    Three of those leads are interconnected. They have continuity and there are around 3.5 ohms between each of the leads. The colors of the these wire are red, white and black.

    The rest of the three leads don't have any connection between each other. One of them, a green wire, for sure is the earth. It has continuity with the body of the pump.

    The remaining two leads are white in color. As mentioned, they don't have continuity with each other and any of the other wires as well. This is what made me worry. I couldn't figure out what could be the purpose of these wires. Could it be switch connection? Could it be for some kind of motor control? I don't know.

    Since the resistance between each of the interconnected leads are about the same, I guess they are coming from three coils of an induction motor. If the motor is single phase capacitor start, induction run type, then I expect the resistance between the leads to have different values.

    That's as far as I can describe my problem. I can attach two photos of the actual thing.

    Hope someone would pop up with a brilliant solution.
     

    Attached Files:

  2. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    Maybe one of the plumbers can help with this? I will move it to plumbing.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. plumber69

    plumber69 In the Trades

    Joined:
    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    I would think red and black are the power, green ground, white float
     
  5. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    He thinks it is three phase?
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Any continuity on the two mystery wires when you switch tho the high-ohms range?

    Possibly some switch closes the path between those wires under some circumstance.
     
Similar Threads: Submersible pump
Forum Title Date
Plumbing Forum, Professional & DIY Advice Over pressure protection for submersible well pump Sep 3, 2020
Plumbing Forum, Professional & DIY Advice Reducing the outflow on a submersible pump... does it hurt the pump? Aug 14, 2020
Plumbing Forum, Professional & DIY Advice Submersible sump pump - water contains sand Jul 3, 2020
Plumbing Forum, Professional & DIY Advice Stainless steel or thermoplastic impeller style submersible well pump? Aug 26, 2019
Plumbing Forum, Professional & DIY Advice Submersible pump will not start. Mar 18, 2019

Share This Page