i have the following specifications for an ac motor with a built in constant torque drive.10:1 constant torque3600rpm250HPWhat Does the ratio mean?
A) definite, you decide on a comments administration gadget while you're required to change velocity. you in addition to would would desire to change (or a minimum of shrink) the motor modern or you may burn it out. B) A stepper motor creates torque pulses which will jerk the burden. if the burden inertial is great sufficient, this would possibly not be a subject. for sure the torque isn't consistent, however the pulses will all be an identical till the fee turns into too great; then they're going to overlap and grow to be distorted.
In specifications for a motor that is suitable for use with a variable frequency drive (VFD), 10:1 constant torque means that the motor can operate continuously at any speed between rated speed (3600 RPM) and one tenth of rated speed (360 RPM) without overheating while delivering rated torque at any speed. Rated torque is the torque required to produce rated horsepower at rated speed. Torque (lbs-ft) = Hp X 5252 / RPM. At 250 Hp, the VFD would be a separate control unit, not something built into the motor.
