We are a professional power transformer manufacturer supplying 110kV large power transformer, oil immersed power transformer and power substation transformer. This smart high voltage power transformer features low no-load loss, intelligent monitoring, IEC & GB standard for power grid substations. Get quotation now.
Key Features & Benefits
Our 110kV smart energy-efficient oil immersed power transformer is a robust large power transformer built for power substation applications. Painted in industrial matte grey, the main tank adopts seamless corrugated steel plate with compact overall dimension design. It uses high-grade grain-oriented silicon steel for core and premium insulating paper for windings. As a reliable high voltage power transformer, it integrates intelligent IoT monitoring module, delivering outstanding energy-saving performance, great short-circuit withstand capability and low operating noise.
• IoT-Ready & Smart Monitoring
Equipped with digital interfaces and a self-aware condition management system, it enables real-time diagnostics, assessment, and control. Facilitates integrated grid-device management for predictive maintenance and optimized operation.
• Superior Energy Savings
Constructed with high-grade grain-oriented silicon steel and employing advanced core design (step-lap joints, no-hole punching, non-lapped yoke), it achieves exceptional efficiency. No-load loss is reduced by more than 35% against GB/T6451-2008, offering significant lifecycle cost savings.
• Enhanced Robustness & Safety
Features a unique corrugated tank wall (seamless welding) and a rigid "Six-Side Positioning" system for the core assembly. Combined with a separate tap winding design for better ampere-turn balance, it ensures remarkable mechanical strength, superior short-circuit withstand capability, and safe transport.
• Optimized Cooling & Low Noise
An internal zigzag oil guide structure ensures even cooling across all winding sections. The corrugated tank and panel radiators increase heat dissipation area, while the core design and tank shape effectively reduce audible noise levels.
• Long-Life & Maintenance-Friendly Design
A bellows-type conservator slows down oil aging, and a magnetic oil level gauge ensures accurate reading. High-quality seals, double-gasketed or welded flanges (upon request), and specially treated paint provide excellent environmental protection and durability.
• Premium Manufacturing & Quality Control
Core assembly and winding are conducted in a fully enclosed, cleanroom environment. All insulating materials undergo strict, controlled drying and sealing processes. Key components can be sourced from leading international suppliers per customer requirements.
Market Advantage：As an experienced power transformer manufacturer, we offer this power substation transformer with balanced performance and competitive total cost of ownership. Although the upfront cost is reasonable, its ultra-low no-load loss cuts long-term electricity expenditure for grid operators. We support customized parameters and fast production schedule for global EPC and power grid projects.
Specifications & Parameters
| Category | Specification / Description |
| Rated Voltage Class | 110kV |
| Applicable Standards | GB1094.12-2013, GB1094.3-2003, GB1094.5-2003; IEC 60076 |
| Efficiency Performance | No-load loss ≥35% lower than GB/T6451-2008 limit |
| Core Construction | High-quality cold-rolled silicon steel, step-lap joints, no holes, non-lapped yoke process. |
| Winding & Insulation | Separate HV tap winding for short-circuit strength. Impregnated paper insulation under strict humidity control. |
| Tank Structure | Seamless, corrugated wall design for increased strength, heat dissipation, and noise reduction. |
| Cooling System | Internal oil guide with external panel radiators (ONAN/ONAF). Other cooling modes available. |
| Mechanical Design | Integrated assembly process. Wide steel plate clamps with "Six-Side Rigid Positioning". |
| Oil Preservation | Bellows-type conservator with magnetic oil level indicator. |
| Sealing System | Precision-machined surfaces, high-quality gaskets, double-sealed flanges (welded option available). |
| Finish | High-grade, corrosion-resistant paint system for long-term protection. |
Packaging, Warranty & Certifications Packaging：
The 110kV large power transformer is securely mounted on a sturdy skid base. The conservator, radiators, bushings, and other external accessories are typically packed in robust, weather-protected wooden crates for safe ocean and land transportation. Desiccant is applied inside the main tank to keep internal insulation dry during shipment.
Quality Assurance & Warranty：
We offer a standard 12-month warranty from the date of commissioning or 18 months from shipment, whichever comes first. The warranty covers defects in materials and workmanship.
Testing & Certification：
We are a qualified power transformer manufacturer with ISO9001 quality system certification. Each oil immersed power transformer will complete full routine and type tests according to IEC & GB standards in our in-house laboratory.
Available test reports:
- Ratio and Polarity Test
- Resistance Measurement
- No-Load & Load Loss Test
- Dielectric Tests (Induced Voltage, Lightning Impulse)
- Short-Circuit Impedance Test
(Optional) Additional Certifications：
We can manufacture this high voltage power transformer to meet CE, GOST, EAC, CQC and other regional certifications as your request, widely used as power substation transformer for smart grid construction worldwide.
