Another Answer
As you have no access to the motor's phases, you must interchange any two of the three line conductors.
simply change any two phase connections out of three & the direction will reverse.
Magic.........
Change the polarity of either the field coils or the armature, not both and you will reverse rotation.
Reverse the connections to the field coil or the rotor but not both.
Swap any two of the three phases (lines).
As the load increases, the speed reduces to deliver the increased torque required.
Squirrel Cage motor is a kind of Induction Motor. The reason an induction motor sometimes refered to a rotating transformer is because the stator (Primary windings in a transformer), which is powered to set up a magnetic field induces a current in the armature coils (secondar coils in a transformer). However, instead of giving an electrical power output, the coil is short circuited to produce mechanical output (torque in this case)
if the power wires for the motor happen to be hooked up backwords
The magnet is the stator part of the motor,either as a permanent or an electromagnet.It doldrums the rotor past of the motor towards it causing the rotation.
Assume a 3 phase AC Induction motor. The speed of the motor is derived by the formula N = (120/f)/P. N speed, f - frequency, P number of poles. In an induction motor P is fixed by the winding. f system frequency. Variable speed drives change the system frequency so that the speed (N) can be varied. Drive is a power electronic device through which the system frequency can be varied
The direction of a singular phase induction ac motor can be reversed by switching the capacitor in relation with the motor windings. When started in the reverse direction, the motor will maintain the same torque level that it had in the forward direction.
A single phase induction motor has two sets of coils and a centrifugal start switch. The start winding is in series with the start switch. The start winding provides a rotating magnetic field in one direction enabling the motor to start. The motor can be reversed by reversing the connections of either the start winding or the run winding but not both.
Reverse any two line leads connected to the motor will reverse the directional rotation of the motor
by changin the freq usin an IGBT.
how reversing an ac single phase induction motor to wark as induction generator
The direction an induction motor will turn depends upon the direction of the rotating field setup by the winding. Remember in AC the direction of the current reverses itself 120 times every second for a 60 hz system. So no it will not turn in the "direction" of the current.
standard direction of rotation of an induction motor is counterclockwise when looking from the front end i.e. non-driving end of the motor.
Trick question: all motors do if you invert the polarity of input.CommentNot a trick question! In the case of d.c. motors, for example, you have to reverse the polarity to either the field or the armature -not to both. If you reverse it to both, it makes no difference to the direction of rotation! For a three-phase induction motor, you must interchange any two line conductors.
Reverse any two of the lead wires at the motor junction box.
Cooling remains same irrespective of the motor rotational direction.
A motor does not have a forward or reverse direction like a vehicle. Electrical terminology is clockwise or counter clockwise rotation determined by looking from the opposite drive end of the shaft. That said, a split phase induction motor has two sets of coils and a centrifugal start switch. The start winding is in series with the start switch. The start winding provides a rotating magnetic field in one direction enabling the motor to start. The motor's directional rotation can be changed by reversing the connections of either the start winding or the run winding but not both.
Reverse any two line leads connected to the motor will reverse the directional rotation of the motor