is it necessary to have three phase rotor
A pool pump motor which is drawing half the amps listed on its nameplate can indicate a problem with the windings or a lack of incoming current. Pumps will only draw as many amps as are required to operate under the current load.
To reverse a three phase motor, you simply swap two of the phase conductors.
A split-phase motor uses a centrifugal switch to energize and de-energize the start winding. The switch is connected in series with the start winding circuit and is typically set to open when the motor reaches about 75-80% of its operating speed, disconnecting the start winding from the power supply.
how can rewinding process be explained in a text form its more hard to understand even in live practical so go to nearest motor rewinding workshop.kindly ask them to show you a trial then they will show you,you dont want to find heavy industry just a ceiling fan or water pump repairing shop is enough
Yes a trained motor technician can determine the lead configuration using an ohm meter of a true dual voltage motor with no connection board. It is a matter of correctly connecting the windings externally from series to parallel.
Windings
The windings of the motor will be gonebecause of high current diectly goes to the windings of motor.
A synchronous motor comprises of a stator windings and a rotor with a squirrel cage and inside that is windings(coils). At starting, this motor is an induction motor running with slip. After the rotor has reached a certain speed, a DC current is applied to the windings inside the squirrel cage. A fixed field is induced in these windings. This field locks in with the synchronous rotating magnetic flux of the stator windings. The rotating stator windings then pull the rotor along. The amount of excitation current can be used to control the power factor of the motor, making this a popular type of motor for high power use with a constant mechanical load.
The number of windings in a ceiling fan motor generally depends on the motor's design and size. Typically, these motors have multiple windings, which are coils of wire wrapped around the motor's core. The windings create electromagnetic fields that interact with the motor's magnetic components to generate rotary motion.
The bimetallic overload protector is mounted in series with the motor windings. Should the current in the motor windings increase to a dangerous value, the heat developed by the passage of the current through the protector will cause it to open. This breaks the circuit to the motor windings and stops the motor before any damage can occur.
The bimetallic overload protector is mounted in series with the motor windings. Should the current in the motor windings increase to a dangerous value, the heat developed by the passage of the current through the protector will cause it to open. This breaks the circuit to the motor windings and stops the motor before any damage can occur.
For a D.C motor it is the field windings which must always be in series with the armature windings.
To determine whether there are any electrical shorts among windings, or from windings to case ground.
Shunt Motor
Reverse the polarity of armature windings of the motor.
You don't. Motors have vents to dissipate heat. Although you can see the windings through these vents, don't cover them or the motor will overheat and burn up.
to move the plunger in and out