Thermal Protection for Single Phase AC Motor

Discussion in 'General Electronics Chat' started by clementcbc, Apr 27, 2012.

  1. clementcbc

    Thread Starter New Member

    Apr 27, 2012
    Hi Guys,

    I've got a Panasonic Single Phase AC Induction Motor, 90W.

    The Motor has 5 wires coming out of it.
    And I've connected capacitor and power to it according to the diagram, using 3 wires. (Attached).

    What I have no idea about is the other 2 wires for Thermal Protection.
    I don't know what to do with it??

    If don't connect anything to the two wires, the motor runs.
    If I short the two wires together, the motor also runs.
    So what's the difference?

    If I don't want to connect a thermal protection device to it, what should I do with the wires....short them together or leave them floating?

    Thanks for help in advance!

  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    Doesn't matter. Suit yourself.
  3. BillB3857

    Senior Member

    Feb 28, 2009
    The thermal protector is either a thermal switch or a thermistor type sensor. It would usually be connected to an external circuit to indicate when the motor was being overloaded and overheated.
  4. strantor

    AAC Fanatic!

    Oct 3, 2010
    You could probably run your incoming power through the thermal switch and then to the motor. I would confirm that with the manufacturer first though.