Description
Notre 3150KVA oil immersed transformer is a high-efficiency Three Phase Transformer designed for medium-voltage power distribution systems and industrial substations. As a professional transformer manufacturer and direct supplier, we produce the S11-3150 3150KVA transformer in our own factory with strict quality control and international engineering standards.
This oil type transformer is engineered with advanced transformer insulating oil cooling technology to ensure stable thermal performance, low energy loss, and long-term operational reliability. The 3150KVA transformer is widely used in industrial plants, mining projects, infrastructure construction, urban substations, and commercial power systems.
Unlike trading companies, we are a factory-based oil transformer supplier providing:
Direct quotation and competitive pricing
Customized voltage and impedance design
Export-standard packaging and global delivery
Full technical documentation and testing reports
With stable production capacity and international export experience, we support EPC contractors, electrical distributors, and industrial power project developers worldwide.
If you are looking for a reliable transformer 3150KVA manufacturer for your substation or industrial power project, our team is ready to provide professional engineering support and fast quotation.
Three Phase 3150KVA Oil Immersed Transformer
This Three Phase 3150KVA oil immersed transformer is manufactured entirely in our own factory, where we maintain full engineering control and strict quality management at every production stage. As a professional 3150KVA transformer supplier and exporter, we design each oil type transformer to meet IEC 60076 and other international industrial standards, ensuring that every unit operates reliably under heavy load and harsh environmental conditions.
The transformer tank is carefully filled with high-grade transformer insulating oil, which provides excellent cooling performance, stable insulation, and long-term operational reliability. Our optimized oil circulation system minimizes temperature rise and extends the service life of core and coil components.
We offer factory-direct quotation and competitive pricing, with transparent evaluation of transformer oil price based on global raw material trends. Customers can request voltage customization, impedance adjustment, and special design adaptations to suit industrial, substation, and infrastructure applications.
As a direct oil transformer manufacturer, we supply 3150KVA transformers to projects worldwide, including industrial plants, mining operations, urban substations, commercial buildings, and infrastructure developments. Our in-house production, strict testing procedures, and engineering expertise ensure that every transformer 3150KVA meets international standards, provides stable operation, and delivers long-term value.
By combining engineering capability, high-quality materials, and factory-controlled production, we ensure that clients receive a reliable, fully tested Three Phase oil type transformer. Our team supports technical consultation, documentation, and export logistics, making us a trusted oil transformer supplier and manufacturer for global power projects.
3150KVA Oil Immersed Transformer Manufacturing Process in Our Factory
This image illustrates the complete manufacturing process of our Three Phase 3150KVA oil immersed transformer, from raw material selection to final inspection. As a professional oil transformer manufacturer, we control every production step in our own factory to guarantee quality, reliability, and compliance with international standards.
Precision iron core lamination: We use high-quality silicon steel sheets for the core. Our automated lamination process ensures minimal energy loss, high magnetic efficiency, and stable transformer performance.
Automated copper coil winding: The copper windings are wound with precision machinery to achieve uniform electrical characteristics, optimal magnetic flux distribution, and reduced heating under load.
Vacuum oil filling: Every transformer tank is vacuum-filled with purified transformer insulating oil, ensuring complete removal of air bubbles and moisture. This enhances insulation performance, improves cooling efficiency, and extends service life.
Tank welding and anti-corrosion spray painting: The transformer tank is welded with strict dimensional and structural accuracy. High-quality anti-corrosion paint and sealing processes protect the unit from moisture, oxidation, and industrial environmental hazards.
Final assembly and electrical testing: After assembly, each 3150KVA oil type transformer undergoes full electrical testing, including no-load loss, load loss, insulation resistance, short circuit impedance, and dielectric strength of transformer oil.
Every unit undergoes routine and type testing according to international standards before shipment. By maintaining full traceability and strict in-factory quality control, our factory-direct production ensures that every transformer 3150KVA delivered to global clients meets the highest engineering and safety standards.
As a trusted oil immersed transformer supplier, we combine advanced engineering, high-grade materials, and controlled production processes. This approach guarantees consistent performance, long service life, and reliable operation for industrial substations, commercial buildings, mining projects, and other high-demand applications worldwide.
All-Season Performance of Our 3150KVA Oil Type Transformer
This Three Phase 3150KVA oil immersed transformer is engineered to operate efficiently in all four seasons and to withstand wide temperature variations. Whether in hot summer conditions or freezing winter climates, the transformer maintains stable voltage output and reliable performance for industrial, mining, and substation applications.
We use high-quality transformer insulating oil that retains its dielectric strength under both high and low temperature conditions. The sealed oil tank structure minimizes oxidation, moisture contamination, and insulation degradation, which significantly extends the transformer’s service life and reduces maintenance frequency.
Our factory-direct production ensures that every 3150KVA oil type transformer meets strict quality standards. As an experienced oil transformer supplier, we design each unit for harsh industrial climates, demanding infrastructure projects, and high-load power distribution systems. The transformer’s robust structure and optimized oil circulation system keep operating temperature within safe limits, ensuring long-term reliability.
We carefully select and test the transformer insulating oil to maintain optimal cooling and insulation performance. This helps reduce energy losses, minimize temperature rise, and extend the life of core and winding components. Our engineers follow international best practices for oil handling, filling, and sealing to ensure the transformer operates safely in all environments.
Learn more about mineral insulating oil for transformers and its critical role in maintaining dielectric strength, heat dissipation, and long-term reliability in power transformers. By combining superior materials, advanced engineering, and factory-controlled production, our 3150KVA oil immersed transformers deliver consistent performance for industrial substations, urban infrastructure, and heavy-duty applications worldwide.
3150KVA Oil Type Transformer Model Code Explanation
The S11-3150 Three Phase Transformer model represents technical specifications that reflect our engineering expertise.
S = Three Phase Transformer
11 = Performance efficiency level
3150 = Rated capacity (3150KVA)
Voltage class = 35kV oil type transformer
Voltage regulation type (On-load or Off-load)
As a professional transformer supplier, we provide technical clarification and customization according to project voltage requirements. Each oil transformer is engineered with optimized transformer insulating oil circulation to enhance cooling efficiency and reduce energy loss. Our engineering team supports global customers with detailed technical documentation and selection guidance.
Advantages of Choosing Our 3150KVA Transformer Manufacturer
Our 3150KVA oil type transformer provides multiple competitive advantages for industrial and substation applications. Designed and manufactured in our own factory, this Three Phase Transformer delivers reliable performance, long service life, and low energy loss.
Widely applicable for industrial and substation use: The 3150KVA transformer suits factories, mining operations, commercial buildings, high-speed railway substations, and urban infrastructure projects. Its robust design ensures stable voltage output under heavy load conditions.
Complete specifications for voltage customization: We offer flexible configurations for high voltage (35–38.5kV) and low voltage (3.15 / 6.3 / 10.5kV) systems. Customers can request specific tapping ranges or impedance adjustments to meet project requirements.
Stable operation with optimized transformer oil cooling: High-quality transformer insulating oil circulates efficiently to maintain low operating temperature and reduce thermal stress. This ensures safe and reliable operation in all four seasons and harsh industrial environments.
Reliable production scheduling: As a direct manufacturer, our factory manages the entire production process from core assembly to final testing. We maintain consistent raw material supply and production capacity, ensuring on-time delivery for both domestic and international projects.
Factory-direct pricing: Without middlemen, we provide competitive pricing for all 3150KVA oil immersed transformer units. Our transparent cost structure balances material quality, transformer oil performance, and overall project budget efficiency.
As a professional oil transformer manufacturer and global supplier, we combine engineering expertise, quality assurance, and stable supply chain management. Every transformer 3150KVA we produce undergoes strict quality inspections, including load and no-load loss testing, insulation resistance verification, and transformer oil dielectric strength evaluation. This approach guarantees that each unit delivered meets international standards and customer expectations.
Industrial Applications of 3150KVA Oil Immersed Transformer
The 3150KVA oil immersed transformer is widely used in industrial and infrastructure projects such as factories, mining operations, office buildings, high-speed subway systems, and port terminals.
As an industrial transformer supplier, we design each oil transformer to operate under heavy electrical loads and fluctuating demand conditions. The high-performance transformer insulating oil ensures stable cooling even under peak power distribution scenarios.
Our Three Phase Transformer solutions support industrial growth, urban infrastructure, and energy-intensive sectors worldwide.
Export Packing and Global Delivery of 3150KVA Oil Transformer
This image shows our export packaging and shipping process for 3150KVA oil type transformer units. As a global transformer supplier, we use reinforced wooden cases, steel frame fixing, and moisture-proof sealing to protect the transformer tank and transformer oil system during long-distance transportation.
Vacuum oil filling and sealed tank structure prevent leakage and maintain insulation stability. Our factory has extensive experience shipping heavy power transformers to Asia, Middle East, Africa, and South America.
Reliable delivery and stable production scheduling are core advantages of our oil immersed transformer manufacturing system.
Why Choose Us as Your 3150KVA Oil Immersed Transformer Supplier
Choosing the right 3150KVA oil immersed transformer supplier is critical for the long-term safety, efficiency, and reliability of your power distribution system. As a professional Three Phase Transformer manufacturer, we provide not only high-performance equipment but also engineering support, stable production capacity, and transparent international cooperation.
Factory-Based Manufacturing with Full Quality Control
We are a direct manufacturer of 3150KVA oil immersed transformer units, producing each transformer in our own facility with strict internal quality management. Unlike trading companies, we control:
Core material selection
Copper winding precision
Transformer insulating oil purification
Tank welding and sealing
Electrical performance testing
Every transformer 3150KVA undergoes comprehensive testing, including no-load loss, load loss, impedance verification, and transformer oil dielectric strength inspection. This ensures long-term operational stability in substations and industrial applications.
Engineering Expertise in Three Phase Transformer Design
Our engineering team specializes in medium-voltage oil type transformer solutions. The S11-3150 3150KVA transformer is designed for:
35kV power distribution systems
Industrial factories
Mining operations
Infrastructure projects
Urban substations
By optimizing transformer oil circulation and thermal design, we reduce operating temperature rise and improve insulation life. Our experience in transformer insulating oil selection helps customers balance technical performance and transformer oil price efficiency.
We support customized voltage ratings, tapping range adjustments, impedance modification, and special climate adaptations based on project requirements.
Stable Production Capacity and Global Export Experience
As an established oil transformer supplier, we maintain stable raw material sourcing and production scheduling. Our factory has experience exporting heavy-duty Three Phase 3150KVA oil immersed transformer units to Asia, the Middle East, Africa, and South America.
We provide:
Export-standard packaging
Vacuum oil filling and sealed tanks
Third-party inspection support
Full technical documentation
Fast and transparent quotation
Our international sales and engineering teams work directly with project managers, EPC contractors, and electrical distributors worldwide.
Competitive Pricing with Long-Term Value
We understand that procurement decisions are influenced by transformer oil price trends and raw material fluctuations. As a factory-direct supplier, we offer competitive pricing without compromising material quality.
Our approach focuses on long-term operational savings:
Reduced energy loss
Stable insulation performance
Lower maintenance frequency
Extended service life
A well-manufactured 3150KVA oil immersed transformer reduces operational risk and protects your infrastructure investment.
Reliable Partner for Industrial Power Projects
We are not only a product supplier but a long-term cooperation partner. Our team provides:
Technical consultation before purchase
Production progress updates
Inspection reports
After-sales engineering support
By combining manufacturing experience, technical expertise, and international project cooperation, we position ourselves as a reliable Three Phase Transformer manufacturer and trusted 3150KVA transformer supplier.
If you are looking for a stable oil type transformer partner for industrial or substation applications, our factory is ready to support your project with professional solutions and dependable delivery.
S11-3150 3150KVA Transformer Technical Specifications and Performance Data
The S11-3150 3150KVA oil immersed transformer technical specifications reflect our engineering precision:
Capacité nominale: 3150 kVA
HV: 35–38.5 kV
LV: 3.15 / 6.3 / 10.5 kV
Connection: Yd11
No-load Loss: 3040W
Load Loss: 23000W
Impedance: 7%
As a specialized Three Phase Transformer manufacturer, we optimize loss parameters and transformer oil cooling efficiency to reduce operational costs for industrial users. Full technical support, customization service, and engineering documentation are available directly from our factory.
Certified Three Phase Transformer Supplier with International Standards
This certification image reflects our compliance with international manufacturing and safety standards. As a certified 3150KVA oil immersed transformer manufacturer, we follow strict quality assurance procedures, including:
Insulation resistance testing
Short circuit impedance verification
Load and no-load loss measurement
Transformer oil dielectric strength testing
Our 3150KVA oil immersed transformer meets international quality and safety standards, including the IEC 60076 Power Transformer Standard. Following these standards ensures reliable operation and long service life for industrial and substation applications.
Our Three Phase 3150KVA transformer production complies with international electrical regulations to ensure long-term operational reliability. Being a direct oil transformer supplier, we provide transparent documentation and third-party inspection support for overseas projects.
This image shows our company owner and engineering team successfully negotiating a 3150KVA transformer supply agreement with overseas clients.
As a factory-direct oil immersed transformer manufacturer, we prioritize transparent communication, technical consultation, and long-term cooperation. Our international business team provides quick quotation, project evaluation, and customization support.
This reflects our role not just as a product seller, but as a reliable Three Phase Transformer supplier and export partner for global industrial projects.
Frequently Asked Questions About 3150KVA Oil Immersed Transformer
1️⃣ What do you use a 3150KVA oil immersed transformer for?
You use a 3150KVA oil immersed transformer in medium-voltage substations and industrial power systems. It converts 35kV high voltage into lower voltage levels for factories, mining projects, office buildings, and infrastructure. The transformer oil cools the unit and protects internal insulation.
2️⃣ Are you a manufacturer or a trading company?
We are a direct manufacturer of Three Phase Transformer products. Our factory produces the 3150KVA oil type transformer from raw material to final testing. We control the full production process and provide factory pricing.
3️⃣ What voltage levels do you offer?
We offer standard configurations:
High Voltage: 35–38.5kV
Low Voltage: 3.15kV / 6.3kV / 10.5kV
Tapping Range: ±5% or ±2×2.5%
We also customize voltage and impedance based on your project needs.
4️⃣ What cooling method do you use?
We use transformer insulating oil for natural cooling (ONAN). The oil removes heat and maintains insulation strength. If your project requires, we can design additional cooling systems.
5️⃣ How do you ensure product quality?
We test every 3150KVA transformer before shipment. Our factory performs:
No-load loss test
Load loss test
Short circuit impedance test
Transformer oil dielectric test
Insulation resistance test
We can also arrange third-party inspection.
6️⃣ What is your delivery time?
We usually complete production within 4–8 weeks. The exact time depends on technical requirements. Our factory maintains stable raw material supply to avoid delays.
7️⃣ How do you ship the transformer safely?
Vacuum filling and proper sealing prevent transformer oil leakage before shipment. Reinforced wooden packing and steel fixation secure the transformer during long-distance transportation. Our team has extensive experience exporting large oil immersed transformers to projects worldwide.
8️⃣ Does transformer oil price affect the total cost?
Transformer oil price affects raw material cost. As a factory supplier, we manage procurement carefully to control costs. We focus on long-term performance and insulation safety, not short-term savings.
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