we need to Rewind an Existing motor rating 400 hp-3.3 kv, 4 pole ,having 48 slots ,but problem is that they have only used 2 coil in a set with total 12 set in complete winding,with 6 leads coming out. so plz suggest the possibilities which we should look after ,along with possible terminology of phase connection.

buy a new engine

I will suggest you get the original data of the motor where the configuration of the winding could be extracted. From your explanation, a motor with 48 slots , 4 pole leaves you with a 12slots per pole arrangement. But try and get the OEM data,it may help you in your search for information. There are different configurations in winding arrangement depending on original design and application of the motor. I hope this helps.

Dear tell me that your motor is sleepring or non sleepring.
and provide your cont dittels for further discusion.
Rajesh Arora

it is squarrell cage motor ,end connection is star

Ht notor rewinding is a specialised job.It requires Coil making and pre-curing facility or VPI impregnation chamber.
Coil making jigs and fixtures are customised for a specific polarity D &L of motors.
An experienced re- winder knows how to address the issues.
Alternatively the re- winding be done by the manufacturer themselves.