Overview / Product Introduction for Oil-Immersed Distribution Transformers
The 250kVA Oil-Immersed Distribution Transformer manufactured by Yawei Transformer is engineered for industrial, utility, and substation applications across the globe. Designed to meet the highest international standards, this transformer provides reliable and efficient power distribution for factories, industrial plants, commercial buildings, renewable energy installations, and infrastructure projects.
Supporting medium-voltage levels 6kV, 10kV, 15kV, 20kV, and high voltage up to 35kV, this transformer offers flexible configurations to accommodate a variety of power distribution needs. Its customizable capacity from 50kVA up to 10,000kVA ensures that Yawei Transformer can meet the requirements of any industrial or utility project.
Built according to IEC, ANSI, IEEE, and GB/T standards, this oil-immersed distribution transformer combines high efficiency, low loss, and long-term operational reliability. The durable design ensures safe and stable operation in demanding industrial environments and harsh outdoor conditions.
As a professional factory manufacturer and supplier, Yawei Transformer offers wholesale, OEM, and custom solutions, delivering globally to markets including USA, Canada, UK, Germany, France, Spain, Italy, Australia, Mexico, Argentina, Brazil, and worldwide. This transformer is ideal for engineers, procurement managers, and B2B customers seeking high-quality, oil-immersed distribution transformers for industrial, utility, and substation networks.
Technical Specifications / Parameters Table for 250kVA Oil-Immersed Distribution Transformers
| Paramètres | Spécifications |
|---|---|
| Capacité nominale | 250kVA (customizable 50–10000kVA) |
| Tension primaire | 6kV, 10kV, 15kV, 20kV, 35kV (personnalisable) |
| Tension secondaire | Options basse tension standard 230V, 400V, 480V, ou spécifiques au projet |
| Type de transformateur | Transformateur de distribution triphasé immergé dans l'huile |
| Méthode de refroidissement | ONAN (Oil Natural Air Natural), optional ONAF (Oil Natural Air Forced) for high-load applications |
| Type d'installation | Intérieur, extérieur, sous-station, montage au sol ou dans un boîtier |
| Configuration de l'enroulement | Wye / Wye ou Delta mis à la terre ; autres groupes de vecteurs disponibles |
| Régulation de la tension | Changeur de prise hors circuit standard ; changeur de prise en charge (OLTC) en option pour le contrôle dynamique de la tension |
| Système d'isolation | Mineral oil-immersed with conservator tank and breather, high dielectric strength, eco-friendly |
| Normes applicables | IEC, ANSI, IEEE, GB/T |
| Applications typiques | Industrial plants, utility networks, substations, commercial buildings, renewable energy projects, infrastructure installations |
| Fabricant / Fournisseur | Transformateur Yawei - Factory direct, wholesale, OEM, custom solutions |
| Livraison mondiale | États-Unis, Canada, Royaume-Uni, Allemagne, France, Espagne, Italie, Australie, Mexique, Argentine, Brésil, monde entier |
Testing & Quality Assurance for Oil-Immersed Distribution Transformers
Yawei Transformer ensures that each 250kVA oil-immersed distribution transformer undergoes rigorous testing and quality control before shipment:
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Tests électriques de routine: insulation resistance, winding resistance, voltage ratio, load loss, and no-load loss tests
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Tests de haute tension: lightning impulse test, dielectric strength test for medium and high-voltage applications
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Tests de montée en température: confirming operational stability under maximum load conditions
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Tests de bruit et de vibrationLes systèmes de contrôle de la qualité : ils garantissent un faible bruit de fonctionnement et des vibrations minimales dans les environnements industriels et les sous-stations.
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Tests de qualité de l'huile: dielectric strength, moisture content, and chemical stability testing to guarantee transformer longevity
These comprehensive tests ensure the transformer meets international standards, delivering reliable performance for industrial and utility applications worldwide.
Materials & Components of Oil-Immersed Distribution Transformers
The 250kVA oil-immersed transformer is built with premium-quality components to ensure durability and efficiency:
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Matériau de base: Cold-rolled grain-oriented silicon steel for low loss and high magnetic performance
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Enroulements: Conducteurs en cuivre ou en aluminium de haute pureté avec isolation époxy pour une fiabilité maximale
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Système d'isolation: Huile minérale avec réservoir conservateur et reniflard en gel de silice, respectueuse de l'environnement et à haute rigidité diélectrique.
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Réservoir et structure: Heavy-duty steel tank with anti-corrosion coating, weather-resistant for outdoor installation
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Bagues et accessoires: Bagues en porcelaine haute tension, conservateur, indicateur de niveau d'huile, dispositif de décharge de pression, options de changement de prise.
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Système de refroidissement: ONAN standard, ONAF en option pour les environnements à forte charge ou à haute température
Maintenance & Operation Guidelines for Oil-Immersed Distribution Transformers
Proper maintenance extends the life and efficiency of the transformer:
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Oil Level & Quality Check: Regularly monitor oil level and dielectric strength
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Inspection visuelle: Check for leaks, corrosion, or damage to bushings, tank, and accessories
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Contrôle de la température: Ensure transformer operates within rated temperature range
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Suivi de la charge: Avoid prolonged overload conditions to prevent accelerated aging
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Maintenance programmée: Periodic inspection and cleaning, including conservator and breather maintenance
Yawei Transformer provides technical support and guidance for maintenance and operational optimization.
Shipping & Packaging Solutions for Industrial & Utility Transformers
Yawei Transformer ensures safe and reliable shipping worldwide:
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Emballage robuste: Steel frame supports, shockproof cushioning, moisture-proof wrapping
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Documentation douanière: Export-ready documentation for international shipments
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Livraison mondiale: Fast and secure delivery to USA, Canada, UK, Germany, France, Spain, Italy, Australia, Mexico, Argentina, Brazil, and other markets
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Commandes en vrac et en gros: Efficient handling of multiple units for industrial or utility projects
Key Features & Benefits of 250kVA Oil-Immersed Distribution Transformers
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Medium voltage options 6kV–20kV and high voltage up to 35kV, supporting versatile applications
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Customizable capacity 50–10000kVA to meet industrial and utility power needs
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High efficiency, low loss, long-term reliability
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Wide application range: industrial plants, utility networks, substations, commercial and renewable projects
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Full range of oil-immersed distribution transformers for various B2B and global projects
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Factory direct, wholesale, OEM, and custom solutions
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Global sales coverage including USA, Canada, UK, Germany, France, Spain, Italy, Australia, Mexico, Argentina, Brazil
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Compliance with IEC, ANSI, IEEE, GB/T standards for quality and safety
Applications of Oil-Immersed Distribution Transformers
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Industrial facilities, factories, and manufacturing plants
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Utility and municipal power networks
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Substation deployment and grid distribution
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Commercial complexes and infrastructure projects
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Renewable energy distribution including solar and wind farms
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Critical infrastructure and smart grids
Project Case Studies for Oil-Immersed Distribution Transformers
Yawei Transformer’s 250kVA oil-immersed transformers have been successfully deployed in multiple international projects:
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USA Industrial Park – 10 units installed for medium-voltage distribution supporting manufacturing lines and auxiliary facilities.
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Germany Substation Network – Custom 250kVA transformers with 35kV primary voltage configured for smart grid integration.
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Brazil Renewable Energy Project – Transformers used for solar farm power distribution with ONAN cooling and outdoor installation.
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Australia Utility Network Upgrade – Multiple units installed in municipal substations, ensuring stable supply to residential and commercial areas.
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Mexico Infrastructure Project – Customized low-voltage outputs integrated for mixed-use commercial buildings.
Each project demonstrates Yawei Transformer’s capability in providing customized, high-quality, and reliable oil-immersed distribution solutions for global industrial and utility networks.
FAQ – Common Questions About 250kVA Oil-Immersed Distribution Transformers
Q1: What voltage levels are supported?
A: Primary voltage options include 6kV, 10kV, 15kV, 20kV, and 35kV; secondary voltage can be customized for 230V, 400V, 480V, or project-specific requirements.
Q2: Can the capacity be customized?
A: Yes, capacities range from 50kVA to 10,000kVA based on project requirements.
Q3: Are these transformers suitable for outdoor installations?
A: Yes, the oil-immersed design with robust tank structure supports indoor, outdoor, and substation installations.
Q4: What cooling methods are available?
A: Standard ONAN (Oil Natural Air Natural) cooling; optional ONAF (Oil Natural Air Forced) is available for high-load or high-temperature environments.
Q5: Is Yawei Transformer able to provide OEM or wholesale solutions?
A: Yes, we provide factory direct, OEM, wholesale, and custom solutions with global delivery including USA, Germany, UK, Canada, Brazil, and other markets.
Q6: What standards do these transformers comply with?
A: IEC, ANSI, IEEE, and GB/T standards for safety, reliability, and performance.
Conclusion
The 250kVA oil-immersed distribution transformer from Yawei Transformer represents a premium, high-efficiency solution for industrial, utility, and substation power networks worldwide. With flexible medium and high-voltage options, customizable capacity, robust materials, rigorous testing, and global shipping, these transformers deliver reliable, stable, and safe power distribution for any project size.
By choosing Yawei Transformer, engineers and procurement managers gain access to factory-direct supply, wholesale orders, OEM customization, and comprehensive technical support, ensuring every project is executed with efficiency, quality, and long-term reliability. Whether for industrial plants, renewable energy projects, municipal utilities, or commercial infrastructure, Yawei Transformer’s oil-immersed distribution transformers provide unmatched performance, durability, and global service.
With decades of manufacturing experience, a focus on international standards compliance, and a worldwide delivery network, Yawei Transformer is your trusted partner for all industrial and utility power distribution solutions, helping businesses achieve operational excellence and uninterrupted power supply anywhere in the world.
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