Oil-immersed power transformers, voltage class up to 35 kV

Oil-immersed power transformers, voltage class up to 35 kV
Oil-immersed power transformers, voltage class up to 35 kV Oil-immersed power transformers, voltage class up to 35 kV Oil-immersed power transformers, voltage class up to 35 kV Oil-immersed power transformers, voltage class up to 35 kV

Stationary three-phase two-winding oil-immersed general purpose power transformers

Transformers with off-circuit tap changer on the HV side, the range of tap-changing ± 2 х 2,5 %, with ONAN cooling types, step down transformers which are designed for power transmission and distribution.
Type, regulatory document Rated voltage, kV Connection of windings Losses, kW Total Weight, kg
HV LV no load loss short-circuit loss
3-phase, OCTC, ONAN, 1,6 MVA (GOST 11920-85) 35,00; 36,75 6,3; 10,5 Yн/D-11 2,75 18,5 6450
3-phase, OCTC, ONAN, 1,6 MVA* (СТО 15352615-012-2011) 35,00 0,4 Y/Yн -0 2,75 18,0 **
3-phase, OCTC, ONAN, 1,6 MVA* (СТО 15352615-012-201 35,00 10,5 Y/D-11 2,75 16,5 **
3-phase, OCTC, ONAN, 2,5 MVA* (СТО 15352615-012-2011) 35,00 6,3; 10,5 Y/D-11 3,90 23,5 **
3-phase, OCTC, ONAN, 4 MVA (GOST 11920-85) 35,00 6,3; 10,5 Yн/D-11 5,30 33,5 11300
3-phase, OCTC, ONAN, 6,3 MVA (GOST 11920-85) 35,00 6,3; 10,5 Yн/D-11 7,60 46,5 17600
3-phase, OCTC, ONAN, 6,3 MVA (СТО 15352615-012-2011) 35,00 10,5 Y/D-11 7,60 46,5 17600
3-phase, OCTC, ONAN, 10 MVA (СТО 15352615-012-2011) 6,00*; 6,30*; 10,00; 10,50* 6,3; 10,5* D/D-0; Yн/D-11* 12,00 60,0 26980
Transformers with off-circuit tap changer on the HV side, the range of tap-changing ± 4 х 2,5 %, with ONAN cooling type, step down transformers are designed for distribution and transformation of AC electric power.
Type, regulatory document Rated voltage, kV Connection of windings Losses, kW Total Weight, kg
HV LV no load loss short-circuit loss
3-phase, OLTC, ONAN, 2,5 MVA (СТО 15352615-012-2011) 35,0 6,3; 11,0 Y/D-11 4,1 23,5 11200
3-phase, OLTC, ONAN, 4 MVA (СТО 15352615-012-2011) 35,0 6,3; 11,0 Y/D-11 5,6 33,5 13500
3-phase, OLTC, ONAN, 6,3 MVA (СТО 15352615-012-2011) 35,0 6,3; 11,0 Y/D-11 8,0 46,5 18500
Transformers without tap changer, with «ONAF», «OFAF» cooling type, - are designed for operation on power engineering facilities.
Type, regulatory document Rated voltage, kV Connection of windings Losses, kW Total Weight, kg
HV LV no load loss short-circuit loss
3-phase, ONAF, 10 MVA ВЕИЮ.672133.002 10,5 6,3 D/D-0 9,0 60 23700
3-phase, OFAF, 80 MVA (СТО 15352615-012-2011) 38,5 6,3 D/D-0*; Yн/D-11 55,0 290 86500

Stationary three-phase two-winding oil-immersed transformers for the auxiliaries of power stations

Transformers without tap changer, with «ONAF», «OFAF» cooling type, - are designed for operation on power engineering facilities.
Type, regulatory document Rated voltage, kV Connection of windings Losses, kW Total Weight, kg
HV LV no load loss short-circuit loss
3-phase, OLTC, ONAF, auxiliry10 MVA (СТО 15352615-012-2011) 10,50 6,3 D/D-0 11,0 60,0 29200
3-phase, OLTC, ONAF, auxiliry10 MVA (СТО 15352615-012-2011) 15,75; 35,00; 36,75 6,3; 10,5; 11,0 Yн/Y-0; Yн/D-11 11,0 60,0 29200
3-phase, OLTC, ONAF, auxiliry16 MVA (СТО 15352615-012-2011) 10,50 11,00 6,3 D/D-0; Yн/Y-0; Yн/D-11* 14,5 85,0 37500
3-phase, OLTC, ONAF, auxiliry16 MVA (СТО 15352615-012-2011) 15,00 6,3 D/D-0; Yн/Y-0* 14,5 85,0 37500
3-phase, OLTC, ONAF, auxiliry16 MVA (СТО 15352615-012-2011) 15,75* 10,5* Yн/Y-0*; Yн/D-11* 14,5 85,0 37500
3-phase, OLTC, ONAF, auxiliry16 MVA (СТО 15352615-012-2011) 20,00 10,5 Yн/D-11 14,5 85,0 37500
3-phase, OLTC, ONAF, auxiliry16 MVA (СТО 15352615-012-2011) 35,00; 36,75; 38,50 6,3; 10,5; 11,0 н/Y-0*; Yн/D-11 14,5 85,0 33900
3-phase, OLTC, ONAF, split-winding, auxiliary 25 MVA (ВЕИЮ.672438.006) 15,75 6,3-6,3; 10,5- 10,5 D/D-D-0-0 20,0 115,0 47000
3-phase, OLTC, ONAF, split-winding, auxiliary 25 MVA * 36,75 6,3-6,3; 10,5-10,5 Yн/D- D-11-11 20,0 115,0 47000
3-phase, OLTC, ONAF, split-winding, auxiliary 32 MVA* ( ГОСТ 11920-85) 15,75 6,3-6,3; 6,3-10,5; 10,5-10,5 D/D-D-0-0 24,5 145,0 ***
3-phase, OLTC, ONAF, split-winding, auxiliary 32 MVA* ( ГОСТ 11920-85) 18,0; 20,0; 24,0 6,3-6,3; 10,5-10,5 D/D-D-0-0 24,5 145,0 ***
3-phase, OLTC, ONAF, split-winding, auxiliary 32 MVA* 36,75 6,3-6,3; 10,5-10,5 Yн/D- D-11-11 24,5 145,0 ***
3-phase, OLTC, ONAF, split-winding, auxiliary 40MVA* 15,75; 18,00; 20,00 6,3-6,3; 6,3-10,5; 10,5-10,5 D/D-D-0-0 36,0 170,0 70000
3-phase, OLTC, ONAF, split-winding, auxiliary 40 MVA* (СТО 15352615-012-2011) 22,0 6,9-6,9 Yн/D-D-11-11 25,0 170,0 68000
3-phase, OLTC, ONAF, split-winding, auxiliary, 40 MVA* (СТО 15352615-012-2011) 24,0* 36,75 6,3-6,3; 10,5-10,5 Yн/D-D-11-11; D/D-D-0-0* 25,0 170,0 68000
3-phase, OLTC, ONAF, split-winding, auxiliary, 63 MVA* (СТО 15352615-012-2011) 20,0*; 24,0 6,3-6,3; D/D-D-0-0 32,0 250,0 86000

*Transformers are subject to be designed and manufactured on the customer's request in the prescribed manner.
** The value of autotransformer losses can be specifyed on the results of acceptance tests.
*** According to the design documents on the results of acceptance tests.


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