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Connecting a 3-Phase Motor in Star Triangle: Switch L1 L2 L3 U1 U2 V1 V2 W1 W2 & Jumper Usage

Mat2224 21624 5
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  • #1 16299332
    Mat2224
    Level 7  
    Hello
    I have a question how to connect a switch to a 3-phase motor in a star triangle.
    Markings at the top in the zxy engine at the bottom of the uvw and the switch of the new type designation
    L1 L2 L3 U1 U2 V1 V2 W1 W2, the jumpers are already on the switch originally.
    And whether these bridges in the engine must be discarded.
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    #2 16299930
    Robert5
    Level 19  
    Hello, you have the designation of the engine in the old way or xyz let's call these marks as the beginning of the windings after the new U1 V1 W1, the ends of the windings uvw or U2 V2 W2
    sign L1 L2 L3 mark the phases of the bridges in the engine disassemble because this function will meet the triangle star switch, still to be sure check the winding transitions with an ohmmeter that is XU, YV, Z- W to be sure and everything will work greetings Robert.
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  • #3 16300463
    Mat2224
    Level 7  
    Thank you for your answer tomorrow, I will try and write. Because another electrician said that zxy is U2 V2 W2 and uvw is U1 V1 W1 or if I would connect it, something would happen.
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    #4 16300552
    krzysiek7
    Moderator of Electricians group
    Nothing will happen, accurate reproduction of "old" and "new" markings are:
    U - U1;
    V - V1;
    W - W1;
    X - U2;
    Y - V2;
    Z - W2.
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  • #5 16300885
    vcc
    Level 35  
    Everyone is writing about the connection and maybe the author would praise to be a photo of the motor plate, from the certainty that the connection to the triangle is for 400V (380)
  • #6 16301422
    Mat2224
    Level 7  
    It is certainly at 400V.

    Added after 1 [minutes]:

    Thanks to everyone for help. Everything works as it should.
    I'm closing the post.
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