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Electric Motors - SHARP SQUIRREL CAGE INDUCTION MOTORS

  Sharp TEFC Squirrel Cage Induction Motors are designed, manufactured and tested to meet the latest British and international standards. Their proven high quality and rugged cast iron construction backed by a 12 month warranty make the Sharp Squirrel Cage Induction Motors ideally suitable for all industrial applications.
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Rating and Standards
 
  • Electric Supply:
  •   Three Phase motors are suitable for 415V ± 10%, 3 Phase, 50 Hz ± 5% supply. For combination of voltage and frequency maximum variation of 10% is allowed.
      Single Phase motors are suitable for 220V ± 10%, 50Hz ± 5% supply. For combination of voltage and Frequency maximum variation of 10% is allowed.
      Motor of variable voltage and dual voltages can be supplied on specific order / request.
       
     
  • Enclosure:
  •   The standard protection is IP 54/IP 55.
       
     
  • Insulation:
  •   All motors are of Class ‘F’ insulation with temperature rise restricted to Class ‘B’ limits, ensuring reliability and long life.
       
     
  • Duty Rating:
  •   All motors are continuously maximum rated type S1 as per DIN EN 60034-1 at 50Hz, 40ºC and 1000 m. Motors of other duty conditions (S2, S3 etc) can be offered on request.
       
     
  • Ambient:
  •   Standard Motors are designed to operate in an ambient temperature of -20ºC (-4ºF) to 45ºC (113ºF).
       
     
  • Altitude:
  •   Standard motors are designed for operation at an altitude not exceeding 3300 feet (1000 meters) above, sea level. For higher altitudes derating of output kW may be necessary.
       
     
  • Mounting:
  •   Motors are available in foot mounted and flange mounted designs confirming to IEC 72 (Dimensions only)/DIN 42673/ISI231 and IEC 72 (Dimensions only)/DIN 42677/IS 2223 standards respectively
       
    Construction
     
  • Frames and Endshields:
  •   Stator frames and end shields are made from high grade cast iron for exceptional strength and corrosion resistance. They are accurately machined to close tolerance in order to ensure rigid alignment and minimum vibration.
       
     
  • Cooling system:
  •   Cooling fins are cast integrally with Stator frame and endshields. High airflow external fans with stator frames of deep fins construction ensure adequate cooling of the motor. Ensuring extended motor life.
       
     
  • Fan and Fan Cowl:
  •   Polypropylene fans are fitted for effective cooling. Fan cowls are of heavy gauge pressed steel, construction, securely bolted to the motor endshield.
       
     
  • Stator Assembly with Winding:
  •   The integral system of wire, slot and phase insulation and the overall varnish impregnation provide superior winding rigidity capable of withstanding vibration limits.
       
     
  • Bearing:
  •   Standard motors are fitted with high quality double side sealed, C3 Clearance ball/bearings with pre-packed lubricants.
       
     
  • Rotor Assembly:
  •   The rotor core consists of annealed and insulated laminations with a pressure die-cast high conductivity aluminium cage. Integrally cast with the cage are wafter blades and balance weight supports. The whole assembly is dynamically balanced to ensure quiet and vibration free operation.
       
     
  • Terminal Box:
  •   Terminal boxes are rotatable 4 x 90 degree increments. Permitting the cable entry from any direction.
      The terminal box is well sealed and located at the right hand side of the frame. Earthing terminal is provided in all motors.
       
     
  • Hardware:
  •   All hardware is electro zinc plated for better corrosion resistance.
       
     
  • Finish:
  •   All inside exposed surfaces are cleaned and sprayed with a corrosion inhibiting coating. All components are mechanically or chemically cleaned prior to the application of a phenolic rust proof primer giving excellent corrosion protection. The assembled motor is finished in a super enamel grey lacquer.
       
     
  • Testing:
  •   Each motor undergoes a full program of tests during manufacture and prior to despatch as per IEC 34-1 /DIN EN 60034-1/IS 325 standard.
       
     
  • Range:
  •   KW – 0.18 kW to 15 kW.
    Speed – 750/ 1000/ 1500/3000 rpm
    Special Motors – As per customer’s requirement.
       
      Selection chart and Electrical Data of single phase
    Standard Squirrel Cage Motors 240V – 50 Hz TEFC Class F Insulation
       
    Frame Size Output Rated Current at 220V (Amps) Speed (rpm) Power Factor Efficiency % Starting Current (% of Full Load Current) Starting Torque (% of Full Load Torque)
    (kW) (HP)
    63* 0.18 0.25 1.4 1440 0.9 70 430 16
    71* 0.25 0.33 2.0 1440 0.9 70 450 33
    71* 0.37 0.50 2.5 1440 0.92 72 400 40
    80* 0.55 0.75 3.0 1440 0.92 72 470 41
    90S* 0.75 1.0 6.0 1440 0.94 75 450 30
    90L* 1.10 1.5 8.0 1440 0.94 78 400 30
    90L* 1.50 2.0 10.0 1440 0.95 78 400 30
    63* 0.18 0.25 1.40 2880 0.9 70 430 33
    71* 0.37 0.5 2.4 2880 0.9 70 420 33
    80* 0.75 1.0 6.0 2880 0.92 75 450 28
    90S* 1.10 1.5 8.0 2880 0.92 75 450 27
    90L* 1.5 2.0 10.0 2880 0.95 78 400 30
    71** 0.18 0.25 2.4 1440 0.6 60 420 180
    80** 0.25 0.33 3.6 1440 0.62 62 420 200
    80** 0.37 0.50 4.7 1440 0.65 68 425 280
    90S** 0.55 0.75 6.0 1440 0.68 68 400 190
    90L** 0.75 1.0 8.0 1440 0.70 70 420 200
    100L** 1.10 1.5 10.0 1440 0.72 71 400 200
    112M** 1.5 2.0 15.0 1440 0.75 72 400 200
    71** 0.18 0.25 2.5 2880 0.6 60 400 200
    80** 0.37 0.50 4.7 2880 0.62 62 530 200
    90S** 0.75 1.0 7.5 2880 0.65 65 400 200
    100L** 1.10 1.5 10.0 2880 0.68 68 500 200
    112M** 1.50 2.0 15.0 2880 0.70 70 500 200
     

    *Capacitor Start and run type
    **Capacitor Start and Induction run type

     
     
     
    Selection chart and Electrical Data of 3 phase
    Standard Squirrel Cage Motors 415V – 50 Hz TEFC Class F Insulation
     
    Frame Size   Output Rated Current at 415V (Amps) Speed (rpm) Power Factor Efficiency % Starting Current (% of Full Load Current) Starting Torque (% of Full Load Torque)
    (kW) (HP)
    80 0.25 0.33 1.0 680 0.59 61 3.2 1.7
    90S 0.37 0.50 1.4 680 0.60 62 3.5 1.8
    90L 0.55 0.75 1.9 680 0.60 67 3.5 1.8
    100L 0.75 1.0 2.2 700 0.68 70 4.2 1.9
    100L 1.1 1.5 3.2 700 0.67 72 4.2 1.9
    112M 1.5 2.0 4.0 710 0.69 75 4.5 1.9
    132S 2.2 3.0 5.3 720 0.72 80 4.8 1.8
    132M 3.7 5.0 8.5 720 0.75 81 4.8 1.8
    71 0.18 0.25 0.75 900 0.60 55 250 200
    71 0.25 0.33 0.96 900 0.64 54 250 200
    80 0.37 0.50 1.30 910 0.66 60 350 200
    80 0.55 0.75 1.60 920 0.68 70 350 220
    90L 0.75 1.00 2.00 920 0.72 72 450 220
    90L 1.10 1.50 2.80 920 0.73 75 450 240
    100L 1.50 2.00 3.80 925 0.73 76 450 250
    112M 2.20 3.00 4.80 925 0.79 80 500 250
    132S 3.70 5.00 7.80 940 0.79 83 500 210
    132M 5.50 7.50 11.5 950 0.79 85 500 220
    63 0.18 0.25 0.60 1330 0.71 59 300 220
    71 0.25 0.33 0.80 1350 0.70 62 350 210
    71 0.37 0.50 1.05 1370 0.72 68 380 200
    80 0.55 0.75 1.50 1400 0.75 68 400 200
    80 0.75 1.00 1.80 1400 0.80 73 450 250
    90S 1.10 1.50 2.60 1410 0.78 75 450 250
    90L 1.50 2.00 3.50 1400 0.78 76 450 250
    100L 2.20 3.00 4.60 1420 0.83 80 500 230
    112M 3.70 5.00 7.50 1420 0.83 83 550 250
    132S 5.50 7.50 10.50 1440 0.86 85 500 250
    132M 7.50 10.00 14.5 1440 0.85 85 500 260
    63 0.18 0.25 0.55 2650 0.79 58 400 210
    71 0.25 0.33 0.76 2750 0.78 57 400 210
    71 0.37 0.50 1.05 2780 0.78 63 450 200
    80 0.55 0.75 1.35 2780 0.79 72 450 230
    80 0.75 1.00 1.80 2800 0.79 73 500 220
    90S 1.10 1.50 2.60 2800 0.79 75 500 220
    90L 1.50 2.00 3.20 2800 0.83 79 500 230
    100L 2.20 3.00 4.50 2820 0.83 82 500 250
    100L 3.70 5.00 7.30 2840 0.86 82 500 250
    132S 5.50 7.50 10.00 2860 0.88 87 500 250
    132M 7.5 10.00 15.00 2870 0.88 87 500 260
     
     
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