Stationary three-phase two-winding oil-immersed general purpose power transformers for the auxiliaries of power stations
Transformers with off-circuit tap changer on the HV side, the range of tap-changing ± 2 x 2,5%, with «ONAN» cooling type, step down transformers which are designed for the transmission and distribution of power energy.
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Type, regulatory document
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Rated voltage, kV
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Connection of windings
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Losses, kW
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Total Weight, kg
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HV
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LV
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no load loss
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short-circuit loss
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3-phase, OCTC, ONAN, 1 MVA (СТО 15352615-012-2011)
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6,00*; 10,00
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0,40
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D/Yн -11*; Y/Yн -0; Yн/D -11*
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1,90
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12,2
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3495
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3-phase, OCTC, ONAN, 1,6 MVA (СТО 15352615-012-2011)
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6,00; 10,00*
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0,40
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D/Yн -11*; Y/Yн -0*; Yн/D -11
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2,35
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18,0
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4750
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3-phase, OCTC, ONAN, 2,5 MVA (СТО 15352615-012-2011)
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6,00*; 10,00
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0,40;
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D/Yн -11; Y/D-11
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4,20
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28,0
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7800
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3-phase, OCTC, ONAN, 2,5 MVA (СТО 15352615-012-2011)
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6,00*; 10,00
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6,30
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D/Yн -11; Y/D-11
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3,90
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23,5
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7800
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3-phase, OCTC, ONAN, 4 MVA (СТО 15352615-012-2011)
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10,00; 10,50*
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6,30; 10,50*
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Y/D-11
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5,20
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33,5
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11300
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3-phase, OCTC, ONAN, 6,3 MVA (СТО 15352615-012-2011)
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6,00
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6,30
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D/D - 0
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7,40
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46,5
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15100
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3-phase, OCTC, ONAN, 6,3 MVA (СТО 15352615-012-2011)
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10,50
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3,15*; 6,30
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Yн/D – 11*; D/D - 0
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7,40
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46,5
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15100
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3-phase, OCTC, ONAN, 10 MVA (СТО 15352615-012-2011)
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6,00*; 6,30*; 10,00*; 10,50
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6,30; 10,50*
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D/D-0; Yн/D-11*
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12,00
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60,0
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7700
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Transformers with on-load tap changer on the HV side, the range of tap-changing ± 8 x 1,25%, with «ONAN» cooling type, step down transformers which are designed for the auxiliaries of power stations.
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Type, regulatory document
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Rated voltage, kV
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Connection of windings
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Losses, kW
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Total Weight, kg
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HV
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LV
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no load loss
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short-circuit loss
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3-phase, OLTC, ONAN, auxiliary, 6.3 MVA
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10,5
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6,3
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D/D-0
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6,4
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44,4
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18700
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*Transformers are subject to be designed and manufactured on the customer's request in the prescribed manner.
