query on variable frequency conversion

[arkaprava]

How to convert 3 phase 415VAC ,50hz to 3 phase 208VAC,60Hz?
Please guide me.

 

[Harald Kapp]

You use an AC/AC frequency converter like e.g. sold here.

 

[arkaprava]

Need to build the circuit itself..and moreover the output will be continuous.

 

[kellys_eye]

You could use a motor-generator set up i.e. a 3-phase 415V motor driving a 3-phase 208V generator (with appropriate gearing to compensate for speed/frequency issues).

 

[Harald Kapp]

Need to build the circuit itself..and moreover the output will be continuous.

If you have to ask how o do this, your level of experience is imho not sufficient for such a project. It involves dangerous voltages and power and should only be done by someone with experience or at least under expert supervision. The nearest you come to with a comparatively 'simple' solution is doing as @kellys_eye suggested.