AC Motors

AC Motors - Low Voltage Motors: Ring Frame Motors

  • Low Voltage Motors: Ring Frame Motors

    FEATURES VALUES/ STANDARDS
    Ambient Temperature -10 to +50°C
    Altitude Not exceeding 1000mtrs above mean sea level.
    Atmosphere Non corrosive & non Hazardous
    Relative Humidity Up to 100%
    Voltage 415V±10%, 3 Ph.
    Frequency 50Hz ±5%
    Combined Variation 10%
    Duty S1(continuous)
    Service factor 1.0

    Execution & Features

    FEATURES VALUES/ STANDARDS
    Starting Star Delta
    Permissible starts/hr Cold successive - 4 hot successive - 3 equally spread - 6
    Loading at reduced volts 75% Rated volts for 5 minutes.
    Insulation / temp.rise Class `F' / 75°C
    Direction of rotation Bi-directional
    No. Of leads 6
    Connection Delta
    Degree of protection IP 55
    Method of cooling IC 411
    T.box position RHS looking from DE (towards DE for 132 & 160)
    Bearing life
    (90% survival basis)    		 40,000 working hrs. For direct drive
    20,000 working hrs. For belt drive
    Vibration Normal class as per IS: 12075
    Noise As per IS: 12065
    Construction Foot (with clean flow fan cover arrangement)
    Frame sizes PMR132M, PMR160M, PMR160L, SCR180M, SCR180L
    Shaft extension. Single cylindrical extension as per IS: 1231
    Body material Cast iron
    T.box material Aluminium (diecast)
    Fan material Polypropelene for all ratings
    Accessories
    		 Nil
    Paint & shade NC base RAL 5012
    Bearing type
    Greasing facility    		 Open type ball bearings for 132 to 180
    Online greasing facility for 180 only