Genset capacity slection

[asdqwert]

I have a ESP pumps skid, the configuration is 400VAC incoming - VFD - step up transformer 0.4/3.6KV - ESP pumps (280kW), this skid is powered by 400vac genset, my question is the minimum capacity of genset?

 

[edison123]

Since you have a soft start via VFD, 400 KVA should do it.

Muthu

http://www.edison.co.in

 

[asdqwert]

If it is 400V GENSET to 400V motor, it is OK. But it is 3.6KV ESP pump, 400V genset - step up transformer 3.6KV - ESP pumps, the MV pumps starting shall be considered in this case.

 

[waross]

Your 20kW plus losses may end up closer to 325kW.
200% is often recommended for VFD drives due to AVR stability issues.
Try about 600kW for the genset.

Bill
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"Why not the best?"
Jimmy Carter