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Old Polish Three-Phase Electric Motor: Testing Functionality & Connecting Switch (6 Wires)

ARB8 5178 6
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16563399
    ARB8
    Level 8  
    Posts: 10
    Rate: 5
    Hello, I have an old Polish three-phase motor. The engine has no switch. Six wires come out of it. How to check if it is operational and then connect the switch correctly.
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  • #2 16563419
    stanislaw1954
    Level 43  
    Posts: 15234
    Help: 2013
    Rate: 4665
    Does he have a plaque?
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  • #3 16563432
    D214d3k
    Level 39  
    Posts: 3837
    Help: 543
    Rate: 631
    Basic checks can be made with an ordinary meter. Look for pairs between which there is a transition, compare the resistance of the coils, check all ends for breakdown to the housing.
    Well, but the directions of the coils, if there are no markings, you can not check it so easily.
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  • #4 16563925
    nikusert
    Level 41  
    Posts: 5429
    Help: 699
    Rate: 1754
    Hello.
    If he checks the pairs of wires, connect in a star. If there is a mistake beginning and ending, the engine will start, but it will hum. When the order is correct, it should run quietly. There were many ways how to check the winding order, start, end (if I remember correctly, it is DC voltage). Additionally, the wires should be properly marked or they should have a different color of wire insulation.
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  • #5 16564204
    ARB8
    Level 8  
    Posts: 10
    Rate: 5
    What does it mean to connect star. Should any of the six wires be connected to the case?
  • #6 16564238
    nikusert
    Level 41  
    Posts: 5429
    Help: 699
    Rate: 1754
    No, three connected together and power to the other three. Are these wires different colors or are they the same?
  • #7 16564843
    retrofood
    VIP Meritorious for electroda.pl  
    Posts: 31317
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    ARB8 wrote:
    What does it mean to connect star. Should any of the six wires be connected to the case?


    With this level of electrical knowledge, you'd better leave it alone and do something you can do.
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Topic summary

✨ The discussion revolves around testing and connecting an old Polish three-phase electric motor with six wires. Users suggest performing basic checks using a multimeter to measure resistance between wire pairs and inspect for insulation breakdown. To connect the motor, it is recommended to configure the wires in a star connection, ensuring that three wires are connected together while the other three are powered. Proper identification of wire colors is crucial for correct wiring. Concerns are raised about the author's electrical knowledge, advising caution in handling the motor.
AI summary based on the discussion. May contain errors.
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