Formulae Definitions Formulae Rotational Speed In the formula below, the "Poles" refer to the "Electrical Poles" that are wound into the electric motor when it is manufactured... that will change the speed of an electric motor is changing the "Frequency". This is where the AC Drive comes into the picture. This calculated value for speed is known.... This is a set value and, aside from "redesigning and rewinding" the motor, is basically a non-changeable number. Therefore, from a "law of physics" stand-point, the only thing...

control one of those motors AND vary the speed. This is not always necessary, but for the most part, a drive is used to control the speed of an electric motor. Power Devices... Formulae Definitions Drives Today, the term Drives refers to numerous electronic devices that control AC and DC motors but NORMALLY is used in reference to that device that can... that control the starting and stopping of a motor, but do NOT vary the speed are usually referred to as STARTERS or CONTACTORS and these devices can be found on the Controls page of our...

will be operating BELOW it's most efficient full load rating. A.R.& E. personnel can REDESIGN an electric motor to operate at the proper horsepower output AND we can even design... Products Formulae Definitions Build to Spec A.R. & E. personnel can build controls OR motors to "SPEC". There are times when a production type of control panel simply "won't do the job... the only thing that we can help you with! Maybe you have a certain project that needs a motor with a "special" speed that is NOT an "off the shelf" design. Or maybe it needs...

Formulae Definitions Electric motors, generators, control panels, sales and service companies are everywhere, but we're glad you're HERE. We hope you find the site easier... to which you wish to send a message but desire to simply "contact us", you may do so by sending an Email message to our general mailbox at: apprep@apprep.com For electric motors...

! In the general control page we discussed the use of starters and contactors to control motors and other power devices. That concept is ..... "as old as the hills"! It's... rotor torque of the motor was so great and the power required to get that blower turning was more than the friction applied between the belts and sheaves. In comes the SSRVS! Simply... adjust the "acceleration" ramp and when the motor is asked to start... the SSRVS simply begins the voltage at "ZERO" volts and increases that voltage over time. There's never a hint...