| Standards and Specifications |
| Dimensions |
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IS 1231 Foot Mounted Motor
IS 2223 Flange Mounted Motor |
| Supply |
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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 |
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Standard motors are designed to operate at the maximum continuous rating for S1 duty with a temperature rise not exceeding 80oC (Class B) in an ambient not exceeding 40oC at an altitude not exceeding 1000 meters. |
| Enclosure |
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IP 44-Standard Motors
IP54 or IP55-Protections are made on request. |
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| Selection of Induction Motor |
An electric motor should be chosen based on the following major considerations:
1. Operational Environment
The various important factors are:
a) Ambient temperature
b) Nature of atmosphere
c) Altitude of operating site
d) Voltage fluctuation
e) Frequency fluctuation
2. Machine Characteristics
The various important factors are:
- Starting torque and starting current
- maximum torque
- Inertia
- Electrical efficiency and power factor
- mechanical features
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3. Duty
The mechanical load is normally of a composite nature and the job to be done has certain
specific
requirements which depend on
a) Dead Load
b) Live Load
- Atta Chakkies, Wet & Dry Grinders, Pumps.
- Machine Tools, e.g. Lathe, Drilling Machines, Milling.
- Compressor, Blower, Buffing, Polishing.
- Air Conditioners, Desert Cooler.
- Vacuum Pumps, Washing Machines.
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