1.Gear ratio: motors are available with any one of the following standard gear reduction ratios of 10, 30, 100, 300, 1000, 3000. (basic rotor speed is 2500 rpm). 2. Windings: motor windings are designated by means of two letters. First letter refers to the voltage to the reference phase and the second letter to the voltage on the control phase. The letter code for voltages is as follows: a = 230v, b = 115v, c = 115-0-115v, d = 23v, e = 11.5, f = 11.5-0-11.5. Standard cotton box or as per customer requirement.
