- محمود شرفمشرف
- عدد المساهمات : 67
تاريخ التسجيل : 14/06/2010
العمر : 37
Finding Braking Torque
الجمعة 16 سبتمبر 2011, 8:35 pm
Full-load motor torque is needed to determine the required braking torque of a motor.
To calculate the braking torque of a motor:
T =( 5252 x HP)/rpm
T = full-load motor torque (in lb-ft)
5252 = constant (33,000 divided by 3.14 x 2 = 5252)
HP = motor horsepower
rpm = speed of motor shaft
• Example: What is the braking torque of a 40 HP, 240V motor rotating at 1725 rpm?
T = (5252 x HP)/rpm
T = (5252 x 40)/1725
T = 210,080/1725
T = 121.8 lb-ft
To calculate the braking torque of a motor:
T =( 5252 x HP)/rpm
T = full-load motor torque (in lb-ft)
5252 = constant (33,000 divided by 3.14 x 2 = 5252)
HP = motor horsepower
rpm = speed of motor shaft
• Example: What is the braking torque of a 40 HP, 240V motor rotating at 1725 rpm?
T = (5252 x HP)/rpm
T = (5252 x 40)/1725
T = 210,080/1725
T = 121.8 lb-ft
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