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  • Users: RichT
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  1. RichT

    Magnetic starter control transformer

    Is there any rule of thumb or table that lists the size of a control voltage transformer for 120 volt motor starter coils from size 0 thru size 6, assuming that the starter coil is the only load on the transformer?
  2. RichT

    Testing Small DC Motors

    Thanks for the info - very helpful to me.
  3. RichT

    Testing Small DC Motors

    I need to learn how to test small shunt wound DC motors in the field. The nature of the test is to determine if a motor has failed without disassembling it. These motors are generally 3 HP or smaller and are either 180vdc or 90vdc. Is this possible to do with a typical ohm meter?
  4. RichT

    Coupling alignment how-to info

    We would like to find information on aligning direct coupled motors and loads. It would be nice to find some good information in the public domain, if possible. Documents in pdf format would be ideal. Any help in steering us in the right direction would be appreciated. Thanks.
  5. RichT

    magnetic center of motor

    I believe that the rotor simply centers when the stator windings are energized. It should center in the same place each time the power is applied. I'm not sure there is a way to calculate this position. The old fashioned way is to simply mark the shaft with the motor running. Then with the...
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