Output Power: KW (for generators),
KW or HP (for motors)
Voltage: V volt.
Speed: N rpm.
Rating: Continuous or Short time.
Temperature rise: 00C for an ambient temperature of 400C.
Cooling: Natural or forced cooling.
Type: Generator or motor, separately excited or
If compound then,
Type of connection – long or short shunt,
Type of compounding – cumulative or differential,
Degree of compounding – over, under or level.
With or without inter poles, with or without compensating
windings, with or without equalizer rings in case of lap
winding.
Voltage regulation: Range and method (in case of generators).
Speed control: Range and method of control (in case of motors)
Efficiency: Should be as for as possible high (As the
efficiency increases, cost of the machine also increases).
Type of enclosure: Based on the field of application –
totally enclosed, screen protected, drip proof, flame proof,
etc.,
And finally Size of the machine etc.,
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