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  1. #1
    Join Date
    Jun 2016
    Posts
    8

    Smile Motor testing

    Recently had a complete motor failure on our PJCM 1325-3 Piranha Router. After receiving a quote from Radical Routers for £5000 for repair. I got in contact with the motor manufacturer. They supplied all the parts for $462 ! I fitted them and the machine is working perfectly. I have tested at different speed setting and cut different jobs and it seem perfect. However, The motor I took off was a 10amp motor. The replacement motor is an 8amp motor!! I have contacted the supplier and they said that sometimes the factory print the wrong information on the motor body!!!!! They have suggested that I test the motor and if I do I will find that it is a 10amp motor. Does anybody know how to test the amperage capability of a three phase motor?

    Any bodies advice is very welcome. I also have a GSH and I will not be offended by any comments you may make.

    Best regards

  2. #2
    Join Date
    Dec 2003
    Posts
    24260

    Re: Motor testing

    What is the motor technology?
    A 3 ph induction motor is usually rated for a particular HP at the rated rpm and FLA (full load amps).
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  3. #3
    Join Date
    Jun 2016
    Posts
    8

    Re: Motor testing

    Hi Al,

    Heres the spec.
    Specification:
    Material: Stainless Steel
    Size: Φ125mm125x298mm(Middle body diameter:125mmxLength:298mm)
    Power: 5.5Kw
    Voltage: 380VAC
    Current: 10A
    Frequency: 0-400Hz
    Speed: 10-24000rpm
    Cooling: Water-cooled
    Radial runout: 0.01mm
    Concentricity: 0.005mm
    Bearing Lubrication: Grease
    Collet size: ER25
    Bearings: 4PCS NSK bearings ,Angular contact bearings
    Net Weight: 19kgs
    Lubrication: the original German Krupp GN25 Express special grease lubrication
    Power supply interface: Professional aviation Interface, Interface 1234 marked 123 respectively connected to the inverter output end of the (U, V, W), 4 ground wire this interface must be safe ground.

    Every thing is the same but the motor supplied says 8amp!!

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