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Home > Products > 35 kV oil-immersed power transformers > TRDNS-25000/35-U1 (UHL1) type two-winding power transformers with split LV windings and on-load tap changer (OLTC), energy-efficient, with reduced losses

TRDNS-25000/35-U1 (UHL1) type two-winding power transformers with split LV windings and on-load tap changer (OLTC), energy-efficient, with reduced losses

product
Power transformer, three-phase, two-winding, oil-immersed, with natural oil circulation and forced air cooling, equipped with on-load tap changer (OLTC). Automatic control is provided by a controller supplied together with the transformer. Designed for operation in auxiliary power supply systems of power plants. TRDNS-type transformers ensure reliable power supply throughout their service life.
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Description

Power transformer, three-phase, two-winding, oil-immersed, with natural oil circulation and forced air cooling, equipped with on-load tap changer (OLTC). Automatic control is provided by a controller supplied together with the transformer. Designed for operation in auxiliary power supply systems of power plants. TRDNS-type transformers ensure reliable power supply throughout their service life.

Power range

Rated power: 25,000 kVA
HV winding rated voltage: 36.75 kV
Climatic category: U1 / UHL1

Transformer symbols

Т – Three-phase transformer
R – Split LV winding
D – Natural oil circulation and forced air cooling
N – On-load tap changer (OLTC)
S – Designed for auxiliary power systems of power plants
Х – Rated power, kVA
35 – Voltage class, kV
U1 or UHL1 – Climatic category and installation type in accordance with GOST 15150

Characteristic

Technical characteristics for TRDNS-25000/35-U1 (UHL1) type transformers, energy-efficient design with reduced losses
Transformer type
Rated power, kVA
Rated voltage, kV
Winding connection diagramand vector group
Losses, kW
HV LV No-load
Short-circuit
TRDNS-25000/35
25000
36,75 35
6,3-6,3 6,3-10,5; 10,5-10,5
Yn/D-11-11
16
105

Overall and Mounting Dimensions

Overall dimensions of TRDNS-25000/35-U1 (UHL1) type transformer
Transformer type
Short-circuit voltage, %
No-load current, %
Weight, kg
ВН-НН1+НН2
ВН-НН1 или ВН-НН2
НН1-НН2
Total weight
Transport weight
Oil weight
TRDNS-25000/35
10,5
23
не менее 40
0,3
42795
37650
9660

Dimensional drawings

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Power transformer, three-phase, two-winding, oil-immersed, with natural oil circulation and forced air cooling, equipped with on-load tap changer (OLTC). Automatic control is provided by a controller supplied together with the transformer. Designed for operation in auxiliary power supply systems of power plants. TRDNS-type transformers ensure reliable power supply throughout their service life.
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team
Tusov Artem Aleksandrovich
Deputy Director for Marketing and Sales

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