110kV Oil-Immersed Power Transformer
The SUT 110kV series power transformers are designed for high-voltage power transformation and distribution in substations, power plants, renewable energy facilities and industrial power systems.
The transformer features an optimized core and winding structure designed to improve electrical performance and short-circuit withstand capability. The core adopts full-miter step-lap construction using grain-oriented silicon steel, helping reduce no-load losses.
A reinforced mechanical positioning and locking structure helps improve stability during transportation and long-term operation. The core-hanging-free design also simplifies maintenance requirements.
The transformer is available with customized insulation classes, tap changer configurations and performance ratings according to project requirements and applicable IEC or GB standards.
Optimized Core Design
Full-miter step-lap core construction with high-grade grain-oriented silicon steel helps reduce no-load losses and improve operating efficiency.
Enhanced Short-Circuit Withstand
The inner-screen continuous high-voltage winding and helical cylindrical low-voltage winding are designed to provide strong mechanical stability under short-circuit conditions.
Low Partial Discharge & Low Noise
The transformer is designed for low partial discharge, low noise and stable long-term operation in high-voltage power systems.
Reinforced Mechanical Structure
Anti-displacement positioning and locking structures help maintain the stability of the active part during transportation and operation.
Core-Hanging-Free Design
The core-hanging-free structure reduces on-site maintenance requirements and simplifies service work.
Flexible Configuration
Capacity, voltage, cooling mode, winding material, insulation class and tap changer configuration can be customized according to applicable technical requirements and project needs.
|
Model |
Rated capacity （kVA） |
Vector group |
Voltage combination（kV） |
No-load loss75℃ （A） |
Load loss（W）75℃ （A） |
No-load current75℃ （A） |
Impedance voltage75℃ （A） |
||
|
|
|
|
High voltage |
Tapping range |
Low voltage |
|
|
|
|
|
SZ20 |
63000 |
YNd11 |
115 |
±8x1.25% |
37 |
29.5 |
209 |
0.34 |
14.0 |
|
SSZ20 |
31500 |
YNyn0d11 |
110 |
±8x1.25% ±2x2.5% |
10.5 |
20.9 |
134 |
0.5 |
10.5 17.5~18.5 6.0 |
|
SZ |
10000 |
YNd11 |
115 |
±9x1.78% |
11 |
10.9 |
74.4 |
0.47 |
10.5 |
Parameters can be customized according to IEC / GB standard.
Options & Accessories ：On‑load tap changer, radiator, oil conservator, explosion‑proof membrane, winding temperature indicator, oil temperature controller etc.
Operating Conditions：Ambient temperature, altitude, installation environment (indoor/outdoor)
|
Meaning of Model Number |
S |
□ |
□ |
□ |
- |
□ |
/ |
110 |
|
|
Three-phase |
"F" for forced air cooling; natural cooling has no designation |
"Z" for on-load tap-changing; off-circuit tap-changing has no designation |
Performance level code |
|
Rated capacity kVA |
|
Voltage class kV |
-
Winding Structure
Inner-screen continuous high-voltage winding and helical cylindrical low-voltage winding provide enhanced short-circuit withstand capability.
Core
Full-miter step-lap stacking with high-grade grain-oriented silicon steel sheets helps achieve low no-load loss.
Mechanical Safety
Anti-displacement positioning mechanisms and anti-loose locking nuts improve mechanical stability during transportation and long-term operation.
Surface Treatment
Degreasing, derusting, sandblasting and double-coat painting help improve surface protection for demanding and corrosive environments.
Maintenance-Oriented Structure
The core-hanging-free design provides a compact structure and helps reduce maintenance workload.
Options & Accessories
The transformer can be configured with selected accessories according to the technical requirements of the project.
Available Options
- On-load tap changer
- Radiator
- Oil conservator
- Explosion-proof membrane
- Winding temperature indicator
- Oil temperature controller
Substations
Designed for high-voltage transformation and power distribution in utility and industrial substations.
Power Plants
Suitable for power transformation systems in conventional and renewable power generation facilities.
Solar & Wind Farms
Applicable to power transformation and distribution systems for solar and wind power projects.
Mining & Petrochemical Facilities
Suitable for demanding industrial environments, including mining and petrochemical industrial parks.
SUT provides customized 110kV transformer configurations according to project voltage, capacity, insulation requirements, tap changer configuration, cooling method and applicable technical standards.
Custom Capacity
Custom Voltage
Custom Cooling
Custom Tap Changer
What is a 110kV power transformer?
A 110kV power transformer is used to transform electrical energy between high-voltage levels in substations, power plants and other high-voltage power systems.
Is this transformer oil-immersed?
Yes. This product is an oil-immersed power transformer.
What capacities are available?
The current product information includes 10,000 kVA, 31,500 kVA and 63,000 kVA configurations. Availability depends on the specific design and project requirements.
Can the voltage configuration be customized?
Yes. Transformer voltage and other technical parameters can be configured according to project requirements and applicable standards.
Is an on-load tap changer available?
Yes. An on-load tap changer is available as an option, depending on the transformer configuration.
What applications are suitable for a 110kV transformer?
Typical applications include substations, power plants, solar and wind farms, mining facilities and petrochemical industrial parks.
Can SUT provide customized transformers?
Yes. SUT can customize capacity, voltage, cooling mode, winding material, insulation class, tap changer configuration and other project-specific requirements, subject to technical design.
What standards can be used?
The current product page states that parameters can be customized according to IEC / GB standards.
