Power 075HP, Brand HINDUSTAN ELECTRIC Hindustan Electric Motor HEM make Inverter Duty IE2IE3IE4IE5 IP55 TEFC SCIM, Type AC, Speed 2000 RPM

Inverter duty motor hindustan inverter duty motor is wound with special dual coated class h wire insulation & vac press impreg. Vpi . Product specifications product code hidmrated volt415v rated freq 50hz ratio v/f 8. 3 v/f constant for frequency 0, 50hz v constant for frequency > 50hz these motors are fed with variable voltage & variable frequency vvvf from inverter vfd supply to achieve speed variation required by the process / app. & to gain energy saving at lower speed. Vfd has an exceptionally elevated switching frequecy causing generating very high dv/dt up to 1. 2kv/ s . Such high pulse impress severe stress on the winding. If the motor with std insulation is fed the repeated, From inverter pulses of such surge wave reduces the insulation strength & essence of the motor unpredictably. Hindustan inverter duty motors are wound with special insulation i. E. . Dual coated class h wire & vpi. Separate cooling when the motor is run from 5hz to 50hz & expected to deliver the motor will, Rated torque draw the rated current. Heating due to the rated current will be equal to the rated heating. At lower speed, The process of chilling the motor is resulting in, Significantly reduced increased temperature rise. To control this, Inverter duty motor is fitted with separate cooling fan. This ensures that the rated cooling is maintained even at reduced speed. Insulated bearing it is advised to protect motors of frames 315 & above with insulated bearing at nde due to high shaft currents induced, Which are detrimental to bearing life. Shaft currents are less, Which are taken care, In smaller motors of by grease film in the bearing. Operation at high speed at frequencies above 50hz, Voltage is maintained constant & only the frequency is increased. This results in reduced v/f ratio resulting in weakened magnetic flux in the motor. Following care is recommended for consumption in this operation mode, The mechanical speed of the motor should never exceed as below. Safe maximum speed for motorsframe size2p4p6p8p 10052003600240018001125200360024001800132450027002400180016045002700240018001804500270024001800200450023001800150022536002300180015002503600230018001500280360023001800150031536002300180015003553600230018001500the output torque reduces greatly with increase in frequency. This results in constant power output. The maximum speed & the maximum operating torque possible at any speed should be chosen ensuring the above.