3000 kVA Oil-Immersed Substation Transformer Overview for Industrial, Utility, and Infrastructure Projects
Manufactured by Yawei Transformer, this 3000 kVA three-phase oil-immersed substation transformer is engineered for high-reliability medium- and low-voltage power distribution in industrial plants, utility networks, substations, and large infrastructure projects. Designed for global industrial and utility applications, it supports medium-voltage ranges from 6 kV to 35 kV, delivering robust and efficient energy distribution for continuous heavy-load conditions.
This transformer is ideal for indoor, outdoor, and substation installations, providing low-loss, high-efficiency operation that complies with IEC, ANSI, IEEE, and GB/T standards. Its oil-immersed design ensures long-term operational stability, environmental adaptability, and safety under demanding industrial and utility conditions.
With flexible capacity customization from 50 kVA up to 10,000 kVA, Yawei Transformer provides tailored solutions to meet the specific voltage and power needs of EPC contractors, industrial engineers, utility operators, and B2B procurement managers worldwide. Factory-direct production, wholesale supply, and OEM options are available, ensuring competitive pricing, global delivery, and project-specific solutions.
3000 kVA Oil-Immersed Transformer Technical Specifications and Parameter Table for Substation, Industrial, and Utility Networks
| Parameter | Specification |
|---|---|
| Rated Capacity | 3000 kVA (customizable, typical range 50–10,000 kVA) |
| Primary Voltage | Medium-voltage: 6 kV, 10 kV, 15 kV, 20 kV, 35 kV (customizable) |
| Secondary Voltage | Low-voltage: 230 V, 400 V, 480 V, or project-specific |
| Transformer Type | Oil-Immersed, Three-Phase Distribution Transformer |
| Cooling Method | ONAN (Oil Natural Air Natural), optional ONAF (Oil Natural Air Forced) |
| Installation Type | Indoor, outdoor, substation, floor-mounted, or enclosure-installed |
| Winding Configuration | Grounded Wye / Wye or Delta; other vector groups available |
| Voltage Regulation | Off-circuit tap changer standard; optional On-Load Tap Changer (OLTC) |
| Insulation System | Mineral oil with conservator tank, breather, protective devices, eco-friendly |
| Applicable Standards | IEC / ANSI / IEEE / GB/T |
| Typical Applications | Industrial plants, utility networks, substations, infrastructure projects, renewable energy distribution, commercial and industrial facilities |
| Manufacturer / Supplier | Yawei Transformer – Factory direct, wholesale, OEM, custom solutions |
| Global Delivery | USA, Canada, UK, Germany, France, Spain, Italy, Australia, Mexico, Argentina, Brazil, worldwide |
Industrial and Utility Transformer Testing & Quality Assurance for 3000 kVA Oil-Immersed Substation
Yawei Transformer conducts extensive quality assurance to ensure reliable, high-performance operation:
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Routine Electrical Tests: insulation resistance, winding resistance, voltage ratio, load loss, no-load loss
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High Voltage & Dielectric Tests: lightning impulse, short-circuit withstand, dielectric strength
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Temperature Rise Tests: ensures stability under maximum load and continuous operation
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Noise and Vibration Tests: industrial noise reduction and minimal vibration for sensitive environments
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Oil Quality Analysis: dielectric strength, moisture content, and chemical stability
Premium Materials and Components Used in 3000 kVA Three-Phase Oil-Immersed Substation Transformers
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Core Material: Cold-rolled grain-oriented silicon steel for low magnetic loss
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Windings: High-purity copper or aluminum with epoxy insulation for durability
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Tank & Structure: Heavy-duty anti-corrosion steel suitable for indoor/outdoor use
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Bushings & Accessories: High-voltage porcelain bushings, conservator, oil level indicator, pressure relief devices, tap changers
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Cooling System: ONAN standard, ONAF optional for high-temperature or heavy-load conditions
3000 kVA Transformer Dimensions for Substation and Industrial Installations
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Length: 3200–3500 mm
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Width: 1800–2100 mm
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Height: 2500–2800 mm including conservator and bushings
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Weight: Core & winding assembly 18,000–22,000 kg; complete transformer 20,000–25,000 kg
Custom dimensions and technical drawings are available for project-specific planning.
3000 kVA Transformer Price, Customization & OEM Options
The price depends on:
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Voltage configuration (primary/secondary)
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Cooling method (ONAN / ONAF)
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Tap changer and vector group type
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OEM labeling and project-specific engineering
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Shipping logistics
Yawei Transformer provides factory-direct pricing, bulk discounts, and turnkey project quotations for industrial and utility clients globally.
Installation, Maintenance & Operation Guidelines
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Installation: indoor, outdoor, substation-ready, floor or enclosure-mounted
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Maintenance: monitor oil levels, check dielectric strength, inspect bushings, tank, and accessories
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Scheduled Servicing: periodic inspection, cleaning, conservator and breather maintenance, tap changer calibration
Proper maintenance ensures transformer longevity and consistent performance under heavy loads.
Industry Applications of 3000 kVA Oil-Immersed Substation Transformers
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Utility substations and grid distribution networks
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Industrial plants and manufacturing facilities
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Renewable energy installations: solar and wind farms
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Infrastructure projects and smart grid systems
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Commercial and large-scale residential complexes
Environmental Adaptability and Operational Reliability
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Designed for extreme temperatures, hot or cold climates
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High humidity, coastal environments with anti-corrosion coating
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Continuous heavy-load operation for industrial and utility applications
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Outdoor, indoor, and substation deployment ready
Case Project Example
A renewable energy project in Brazil installed a 3000 kVA three-phase oil-immersed substation transformer to support multiple solar farms and industrial facilities. The transformer’s flexible voltage configuration and high-efficiency design enabled stable, reliable energy distribution across diverse loads and environmental conditions, demonstrating the suitability of oil-immersed transformers for global B2B projects.
Frequently Asked Questions (FAQ)
Q: Can the transformer be customized for unique voltage levels?
A: Yes, both primary and secondary voltages can be fully tailored to project specifications.
Q: Are OEM and private-label options available?
A: Yes, Yawei Transformer provides full OEM solutions for B2B clients worldwide.
Q: Is outdoor installation possible?
A: Yes, the transformer is suitable for indoor, outdoor, and substation environments.
Q: What global markets are supported?
A: USA, Canada, UK, Germany, France, Spain, Italy, Australia, Mexico, Argentina, Brazil, and worldwide.
Global Shipping & Wholesale Supply
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Robust packaging with steel frame support and moisture-proof wrapping
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Export-ready customs documentation
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Bulk and wholesale order handling for large-scale industrial and utility projects
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Global delivery with technical support
Key Features & Benefits
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Three-phase oil-immersed substation transformer with medium-voltage range 6 kV–35 kV
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Low-voltage options 230 V–480 V
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High efficiency, low loss, and long-term operational reliability
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Full capacity range 50–10,000 kVA
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Factory-direct, wholesale, OEM, and custom solutions
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Global delivery and B2B support
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IEC, ANSI, IEEE, GB/T compliance for safety and quality
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Suitable for industrial plants, utility networks, substations, renewable energy, and infrastructure projects
Long Conclusion / Summary
The 3000 kVA three-phase oil-immersed substation transformer from Yawei Transformer represents a reliable, efficient, and fully customizable solution for global industrial, utility, and infrastructure power distribution projects. Its oil-immersed design ensures long-term operational stability, high efficiency, and low energy loss. With flexible primary and secondary voltage configurations, ONAN or ONAF cooling options, and fully customizable capacity from 50 kVA to 10,000 kVA, it addresses the needs of EPC contractors, engineers, utility operators, and industrial procurement managers worldwide.
Designed for demanding industrial environments, outdoor installations, and substation networks, this transformer guarantees safe operation under extreme temperatures, high humidity, heavy-load conditions, and variable environmental challenges. Its comprehensive testing, premium materials, and optional OEM services provide peace of mind and project-specific adaptability for large-scale B2B applications.
With factory-direct pricing, global delivery including USA, Canada, UK, Germany, France, Spain, Italy, Australia, Mexico, Argentina, Brazil, and detailed technical support, the Yawei Transformer 3000 kVA oil-immersed substation transformer is the preferred choice for engineers, procurement managers, and utility project planners seeking high-performance, reliable, and cost-effective industrial and utility power distribution solutions worldwide.
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