how to increase from 1500 to 3 th rpm at this motor

[Szczesnowicz]

Hello,
there is a my motor. Is it possible to change connection to increase a rpms to 3000? If yes, please tell how to. Thanks

 

[Szczesnowicz]

 

[waross]

Quick answer: NO.
Longer answer: Probably not.
Your motor is wound with four poles per phase. For double speed it must be wound with 2 poles per phase.
Yes there motors wound so that they may be connected for either a 2 pole or a four pole connection, but if the motor was not designed and built as a two speed motor, it is unlikely that the winding spacing and spans will be suitable for 2 ole operation.
There is the additional challenge of locating the internal jumpers between the coil groups that must be cut and extended out.
But, all is not lost.
Buy a Variable Frequency Drive and run it at 100 Hz.

Bill
--------------------
Ohm's law
Not just a good idea;
It's the LAW!