Starting Large Motor 2MW with Captive Transformer Using Temporary Transformer

Dear all, I need some advices regarding to start large motor cooling water pump 2000kw, 3.3kV(detail info is listed below) using captive transformer 3500kVA (13.8kV/3.3kV).

And IMHO, captive trafo is supplied from temporary transformer 3000kVA (20kV/3.45kV) which sufficient to deliver starting motor 2000kW (I think), but not bigger than the captive tranformer 3500kVA,

This captive trafo also through using backfeed transformer 10MVA, 3.3kV/13.3kV (normal is step down Dyn-11, 13.8kV/3.45kV) which suppose to be use ground protection transformer or zig-zag trafo for delta side of the 10MVA trafo. With this starting scheme, is it sufficient to make start of this motor? Motor data: Pump driven for motor cooling water: 2000kW, BHP: 1760kw, spee: 600rpm, poles :10 LRC motor: 500% PF motor at starting : 0.2 Voltage: 3300kV, 3phase, 50Hz Full load amp: 458Amp temp rise:B Efficiency and pf: 95.5% and 80%at 100% I have calculated that it can work with using captive trafo 3500kV with detail below: Voltage: 13.8kV/3300kV Amp: 146.43/612.34 short circuit impedance: 4 Vector group: Dyn-11 This motor should be normal operated using STG 19MVA,13.8kV But within start up comm this captive trafo will be fed from backfed tranformer 10MVA,with detail data below: Voltage: 3450V/13.8kV Amp: 1673.48/418.37 short circuit impedance: 8%. Vector group: Dyn-11 This trandformer is also energized from temp trafo 3000kVA, with detail below: Voltage: 20000kV/3450kV Amp: 86.6/502.04 short circuit impedance: 7%. vector group: YNyn-6 The utility system is using 20kVA, with short circuit impedance 500MVA, Do you have any experience this scheme, and other advices will be welcome. Thank you, Athan activate javascript