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TEFC MOTOR

Generally comfirming to IS: 325

Standards and Specifications

Dimensions : IS 1231 Foot Mounted Motor
IS 2223 Flange Mounted Motor

Supply : The motors are suitable for operation on 415 + 6% volts 50 Hz AC (IS 325) and 415 + 6% volts 50 Hz AC (IS 7538) - 15%

Insulation & Rating : Standard motors are designed to operate at the maximum continuous rating for S1 duty with a temperature rise not exceeding 80℃ (Class B) in an ambient not exceeding 40℃ at an altitude not exceeding 1000 meters.

Enclosure : IP 44-Standard Motors
IP54 or IP55-Protections are made on request.

Selection of Induction Motor

An electric motor should be chosen based on the following major considerations:

Operational Environment

The various important factors are:

  1. Ambient temperature
  2. Nature of atmosphere
  3. Altitude of operating site
  4. Voltage fluctuation
  5. Frequence fluctuation

Machine Characteristics

The various important factors are:

  1. Starting torque and starting current
  2. maximum torque
  3. Inertia
  4. Electrical efficiency and power factor
  5. mechanical features

Duty

The mechanical load is normally of a composite nature and the job to be done has certain speciric requirements which depend on

  1. Dead Load
  2. Live Load

Typical Applications

  1. Atta Chakkies, Wet & Dry Grinders, Pumps.
  2. Machine Tools, e.g. Lathe, Drilling Machines, Milling.
  3. Compressor, Blower, Buffing, Polishing.
  4. Air Conditioners, Desert Cooler.
  5. Vacuum Pumps, Washing Machines.

Technical Specification TEFC 3 Ph.415± 6% Induction Motor

H.P. K.W. FRAME R.P.M.
(SYN)
0.25 0.18 63 1500/3000
0.50 0.37 71 1500/3000
0.75 0.55 80 1500/3000
1.00 0.75 80 1500/3000
1.50 1.10 90L 1500/3000
2.00 1.50 90L 1500/3000
3.00 2.20 100L 1500/3000
5.00 3.70 112M 1500/3000
7.50 5.50 132M 1500
10.0 7.50 132M 1500
H.P. K.W. FRAME R.P.M.
(SYN)
- - - -
0.25 0.18 71 1000
0.5 0.37 80 1000
0.75 0.55 80 1000
1.0 0.75 90L 1000
1.5 1.1 90L 1000
3.0 2.2 112M 1000
3.0 2.2 112M 1000
5.0 3.7 132M 1000
7.5 5.5 132M 1000
H.P. K.W. FRAME R.P.M.
(SYN)
- - - -
- - - -
0.25 0.18 80 750
0.33 0.25 80 750
0.5 0.37 90L 750
0.75 0.55 90L 750
2.0 1.5 112L 750
2.0 1.5 112M 750
3.0 2.2 132M 750
4.0 3.0 132M 750

Dimensions

All dimensions are nominal and in mm

Frame Size H A B K D
63 63 100 80 7 11
71 71 112 90 7 14
80 80 125 100 10 19
90 90 140 125 10 24
100 100 160 140 12 28
112 112 190 140 12 28
132 132 216 178 12 38