An induction motor relies on low-frequency currents induced in the rotor by the difference in speed between the rotor and the rotating magnetic field. At sychronous speed the induced current is zero therefore the torque is also zero.
Low voltage or possibly the loss of one phase.
A 3-phase motor can be slow by:-
1. BY INCREASING THE NUMBER OF POLE PAIR.
2. BY USING GEAR.
An open phase wire.
A synchronous motor can be a type of 3-Phase AC motor, or not.A synchronous motor is defined by the period of the rotor being synchronized with the frequency of the stator windings' current. The stator windings might be 3-Phase or not (2-Phase would work).Also synchronous motors are not the only type of 3-Phase AC motors. An induction motor could also be 3-Phase AC and has a few advantages and disadvantages over a synchronous motor.
You probably need a 5hp or 7hp motor. Look for HP rating o the 3 phase motor and select the same for single phase. 3 phase has same power but is more efficient at electricity use. Also consider a 3 phase converter. It allows a 3 phase motor to run on single phase service.
The phase rotation of motor should be always done from motor side i.e The motor terminal box.
You would reverse rotation on a 3 phase motor to get it to run backwards. Say I fill up a tank truck from a lake. I turn on my generator. I run the motor in one direction. Then I drive the tank truck and the motor to a different location. Then I turn on my generator. I attach the hose to the motor on tank truck. I throw the switch to make the motor run backwards. I aim the hose at the fire in your house. Aren't you glad that I can make my 3 phase motor run backwards?
Yes the minimum voltage of an 115vac 400 Hz 3 phase motor will run. You can run a single phase motor on a three service but you cannot be run on a single phase.
We can convert a 3 phase ac motor into generator by changing phase sequence of the ac input cable of that motor
The motor will turn
No. That would be a single phase motor.
it can tell you which way a motor will turn before you apply power sometimes nice to know
No.
A synchronous motor can be a type of 3-Phase AC motor, or not.A synchronous motor is defined by the period of the rotor being synchronized with the frequency of the stator windings' current. The stator windings might be 3-Phase or not (2-Phase would work).Also synchronous motors are not the only type of 3-Phase AC motors. An induction motor could also be 3-Phase AC and has a few advantages and disadvantages over a synchronous motor.
The winding design of the motor will not economically allow this to work. You would have to drive a 3 phase generator to supply it.
A 3-phase motor produces a steady torque that does not pulsate. A 3-phase motor starts turning in the right direction when switched on without the need for a separate starting winding.
You probably need a 5hp or 7hp motor. Look for HP rating o the 3 phase motor and select the same for single phase. 3 phase has same power but is more efficient at electricity use. Also consider a 3 phase converter. It allows a 3 phase motor to run on single phase service.
what is 3 phase eletical conction digram of 3 phase motor
It is probably a three phase 50 Hz motor.
The phase rotation of motor should be always done from motor side i.e The motor terminal box.