TMDS Graduated Standard

The following test data receive a grade of A, B, C, or F.   

No load

    DC Motor
        Field Voltage
        Armature Amperage
        Speed
        Directional Difference in Armature Amperage
        Direction Difference in Speed

    AC Motor
        Amperage (3 phases)
        Directional Difference in Amperage (3 phases)
        Direction Difference in Speed

Saturation (DC motor)

    Armature Amperage (3 test conditions)
    Field Voltage (3 test conditions)
    Directional Difference in Field Amperage (3 test conditions)
    Speed (3 test conditions)
    Direction Difference in Speed (3 test conditions)

Maximum Speed

    DC Motor
        Armature Voltage
        Armature Amperage
        Directional Difference in Armature Voltage
        Directional Difference in Armature Amperage

    AC Motor
        Amperage (3 phases)
        Frequency
        Directional Difference in Amperage (3 phases)
        Directional Difference in Frequency

    Common to both motor types
        Commutator End Vibration
        Pinion End Vibration
        Axial Vibration
        Commutator End Bearing Noise
        Pinion End Bearing Noise

Maximum Voltage

    DC Motor
        Armature Amperage
        Field Voltage
        Speed
        Directional Difference in Armature Amperage
        Directional Difference in Field Voltage
        Directional Difference in Speed

    AC Motor
        Amperage(3 phases)
        Speed
        Directional Difference in Amperage(3 phases)
        Directional Difference in Speed

    Common to both motor types
        Ground current

Full Load  

    DC motor
        Armature Voltage
        Armature Amperage
        Field Voltage
        Directional Difference in Armature Voltage    
        Directional Difference in Armature Amperage
        Directional Difference in Field Voltage
        Commutator surface temperature  

     AC Motor
        Amperage(3 phases)
        Frequency
        Directional Difference in Amperage(3 phases)
        Directional Difference in Frequency

    Common to both motor types
        Commutator Bearing Temperature above Ambient
        Pinion Bearing Temperature above Ambient
        Frame Temperature above Ambient
        Commutator End Bearing Noise
        Pinion End Bearing Noise
        Ground current

Losses

    DC Motor
        Field Circuit Loss
        Core Loss
        Rotational Losses

    AC Motor
        Rotational Losses

Locked Rotor (AC motor)
    Amperage