Electric Motor Base Speed
N shaft rotation speed rev min rpm.
Electric motor base speed. P number of poles. The induction motor must run at a speed below the revolving stator field flux. Electric motor efficiency calculate electric motor efficiency. If a dc motor is running on a 12 v battery that is the maximum voltage available to the unit and the motor will only be able to perform at a speed rated for 12 v.
The synchronous speed can be calculated as. Electric motors can be powered by direct current dc sources such as from batteries motor vehicles. Average 2 pole industrial motors can safely exceed its base speed by 25. A 2 pole motor may therefore operate up to 125 over base speed before reaching its balance limit.
The power supply frequency and. The synchronous speed for an electric induction motor is determined by. An induction motor slows as it is loaded. Electrical induction motors synchronous speed the speed at which an induction motor operates depends on the input power frequency and the number of electrical magnetic poles in the motor.
N f 2 p 60 1. If the battery is low and supplying less voltage. The number of wire turns in an armature the operating voltage of the motor and the strength of the magnets all affect motor speed. Many manufacturers balance their 2 pole and 4 pole rotors to the same speed 25 over the 2 pole base speed.
Rated speed is the base speed minus the slip at full rated load. Note an induction motor will never reach its. Base speed is hz multiplied by 60 then divides the result by half the number of poles. The number of poles in the motor winding.