07-26-2016 08:18 PM - edited 07-26-2016 08:18 PM
The proper answer is no, the stator is wound to provide nominal 600VAC with a standard rotor and excitation system.
In reality you could adjust the voltage down, but the V/Hz ratio would be incorrect for the winding design, and you may see issues with stability and stator heating.
I have seen it done in many places in the world, but the long term results have almost always been unsatisfactory. A lot depends on what you intend to use the generator for, if it is a single unit operating standalone it is less of an issue, if it is paralleled with other units or the grid, you may have problems with pole slip from the low field levels.
Hope that helps, MikeL.
06-14-2016 09:18 AM
we have genset with this details
FOR SCR DRILL RIG
1457 KVA 1020KW
0.7 PF 50 HZ
3 PHASE 6 LEADS SERIES WHY CONNECTION
600 VOLT 1443 AMPS FRAME: 807
EXITATION 58 VOLT 13.6 AMPS
WITH NO VOLTAGE REGULATOR
Is it possible to make this genset work on industrial application and change the rated voltage from 600V to 400V. if yes what actions should I do and What type of voltage regulator should i install