10-35kv-oil-immersed-transformer, 10-35kv-oil-immersed-transformer, /10-35kv
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10-35kv-oil-immersed-transformer, 10-35kv-oil-immersed-transformer,
EN
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10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer
10-35kV Oil-Immersed Transformer

10-35kV Oil-Immersed Transformer

Type: 3-phase oil immersed distribution transformer

Rated Power: 30kVA-25,000kVA

Frequency: 50 HZ/60 HZ

Standards: IEC 60076 / GB 1094

             

Customize from Our Standard Product Line

If you spot a near-match in our catalog, we can quickly modify our standard transformers for your application. Adjustments cover capacity, voltage class, cooling type and installation structure.

Build per Your Technical Documents

Send us your specifications or drawings. Our engineering team reviews the design, validates all key parameters with you, and manufactures strictly in accordance with international standards.

Full Custom Design from Concept to Completion

Without formal detailed specs? Share your ideas and functional requirements. We partner with you to develop fully customized transformer solutions, from electrical design and structural layout through to insulation system.

Request a Quote
  • Overview
  • Product Overview
  • Technical Advantages and Innovation
  • Application
  • Why Choose Bardeen
  • Technical Specifications
  • FAQ
  • Transportation Services & Process

Overview

35kV 500kVA Oil Immersed Transformer is a professional transformer designed for power distribution systems. It is engineered according to the project voltage class and load requirements to enable power conversion, stable power supply, and distribution-system connection. This specification is suitable for industrial, infrastructure, commercial, and energy projects of various scales. The product can be customized to local grid standards, installation conditions, and project technical requirements, including rated voltage, vector group, impedance voltage, insulation class, and protective accessory configuration

Bardeen presents the 10-35kV Oil-Immersed Transformer, a robust solution engineered to meet the evolving demands of modern power distribution and renewable energy integration. Designed and manufactured by Bardeen Equipment Co., Ltd., this oil-immersed distribution transformer delivers reliable performance for medium voltage grid upgrade projects, renewable energy storage transformer deployments, and custom substation transformer applications. With IEC-certified capabilities and decades of manufacturing expertise, bardeen’s 10-35kV Oil-Immersed Transformer is optimized for durability, efficiency, and adaptability across diverse electrical networks

Bardeen’s continuous R&D investment focuses on improving transformer efficiency, longevity, and environmental performance. The 10‑35kV Oil‑Immersed Transformer benefits from innovations in core steel laminations, low‑loss winding geometries, and oil‑preservation technologies that reduce oxygen exposure and slow aging of insulating materials

Product Overview

Product Overview and Key Features

The bardeen 10-35kV Oil-Immersed Transformer is a medium-voltage unit purpose-built for the rigorous requirements of today’s distribution networks. As an oil-immersed distribution transformer, it provides superior insulation, thermal management, and long-term operational stability. Ideal for medium voltage grid upgrade initiatives, the unit supports seamless transitions from legacy systems to modern, higher-capacity grids while minimizing downtime


Dielectric Strength: Proven oil-immersed distribution transformer design ensuring enhanced dielectric strength and heat dissipation through oil circulation and conservator systems. This oil-immersed distribution transformer approach prolongs insulation life and reduces maintenance frequency

Flexible Support: Versatile medium voltage support tailored for medium voltage grid upgrade applications, providing voltage levels from 10kV to 35kV for adaptable system integration. The medium voltage grid upgrade capability ensures compatibility with evolving distribution architectures

Renewable Ready: Optimized as a renewable energy storage transformer for interfacing battery storage, hybrid systems, and inverter outputs with the grid. The renewable energy storage transformer configuration supports bidirectional power flows and stabilizes renewable integration
Bespoke Engineering: Customizable configurations as a custom substation transformer, allowing bardeen to deliver tailored tap-changer settings, cooling arrangements, bushings, and protection interfaces to meet project-specific needs

High Efficiency: Core and winding construction minimizing no-load and load losses, enhancing overall system efficiency. Efficiency improvements reduce lifecycle costs for operators and support sustainability targets when deployed as a renewable energy storage transformer in modern installations

Mechanical Robustness: Seismic reinforcement, anti-corrosion surface treatments, and modular components that facilitate maintenance and rapid replacement ensure the oil-immersed distribution transformer withstands harsh environmental conditions

Global Compliance:

Manufactured in facilities capable of IEC-certified transformer production, bardeen’s 10-35kV Oil-Immersed Transformer undergoes factory testing and quality assurance to meet international standards for oil-immersed distribution transformer performance and safety

  • Meets distribution application requirements for the relevant voltage class and is suitable for projects across multiple overseas markets

  • The 500kVA capacity configuration can be matched to different power‑use scenarios based on actual load calculations

  • Uses proven insulation and heat‑dissipation designs to enhance operational stability

  • Supports parameter adjustments and accessory configurations to meet project requirements

  • Suitable for export projects and can support the technical documentation and certification requirements of different markets

Technical Advantages and Innovation

Technical Advantages and Innovation

Bardeen’s engineering emphasizes technical advantages that translate into measurable benefits for utilities, EPC contractors, and renewable developers. Advanced winding techniques and core assembly reduce magnetizing current and no‑load losses, increasing net energy throughput for medium voltage grid upgrade initiatives

Application

Application Scenarios

Power distribution systems for industrial plants, manufacturing facilities, and industrial parks
Commercial buildings, public facilities, and infrastructure projects
Supporting projects for renewable energy, photovoltaic, wind power, and energy storage
Agricultural applications, grid expansion, and power supply for remote areas
Overseas engineering projects and power‑infrastructure development

Why Choose Bardeen

Why Choose Bardeen

Selecting bardeen’s 10‑35kV Oil‑Immersed Transformer means partnering with a manufacturer experienced in delivering IEC‑certified transformers and substations for global projects. Bardeen’s commitment to quality, customization, and technical support ensures each oil‑immersed distribution transformer meets project targets for performance, reliability, and cost‑effectiveness. Whether deployed for medium voltage grid upgrade programs, as a renewable energy storage transformer, or specified as a custom substation transformer, the 10‑35kV Oil‑Immersed Transformer from bardeen offers a future‑ready solution backed by industry expertise

Technical Specifications

Technical Specifications

Product Type Oil Immersed Transformer
Rated Capacity 500kVA
Voltage Class 35kV
Rated Frequency 50Hz/60Hz
Number of Phases Three‑phase - subject to product configuration
Cooling Method Subject to product type confirmation
Installation Method Outdoor or indoor installation
Applicable Standards IEC 60076 / GB 1094

FAQ

Frequently Asked Questions

Q1: What insulation upgrades does this product have compared with 6‑10 kV transformersA: For the 35 kV voltage class, we enhance both main insulation and longitudinal insulation. The high‑voltage winding adopts interleaved‑continuous winding technology, with increased thickness of insulation press-board and end electrostatic rings. It can withstand high lightning impulse voltage (peak value up to 200 kV), guaranteeing safe operation under grid fluctuation
Q2: Is it suitable for high‑altitude areasA: Yes. According to national standards, locations above 1000 m are defined as high‑altitude regions. We recalculate external insulation Creepage distance and air clearance with correction formulas, and appropriately moderate temperature‑rise limits (approx. 1 % reduction for every 1000 m altitude increase). This prevents corona discharge under low‑air‑pressure conditions at high altitudes
Q3: What voltage regulation modes are availableA: Off‑circuit tap‑changer (DETC) is standard for 10‑35 kV transformers. Voltage adjustment (typically ±2×2.5 %) is performed by repositioning the tap changer under power‑off status. On‑load tap‑changer (OLTC) is available as an optional solution for applications requiring superior voltage quality with on‑load regulation
Q4: What loss standards do the transformers comply withA: Our products strictly comply with GB 20052‑2020 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Power Transformers. Both Grade‑1 and Grade‑2 energy‑efficiency versions are customizable. Compared with the legacy S11 series, no‑load loss and load loss are reduced by 20%‑30 % on average, delivering substantial savings on long‑term operational energy costs

Transportation Services & Process

Transportation Services & Process

1. Heavy‑Lift & OOG Expertise

Specialized handling for Over‑Out‑of‑Gauge (OOG) cargo. We manage the entire process for heavy transformers, from custom crating and vacuum packaging to flat‑rack, break‑bulk, or Ro‑Ro shipping.

2. Customs & Compliance Management

Expert handling of complex export/import documentation, HS codes, and destination country regulations. We ensure smooth customs clearance to avoid costly delays.

3. Real‑Time Visibility & Risk Control

24/7 GPS tracking and milestone updates. Comprehensive cargo insurance covering all risks from origin warehouse to destination site.

4. Emergency Response

Prioritized air freight and expedited sea options for critical breakdowns. We minimize downtime by getting your replacement transformer or parts there faster.

Process

1

Assessment & Planning

We analyze the dimensions, weight, and route to design the optimal transport plan.

2

Professional Packaging

Seaworthy packing

3

Multimodal Transit

Execution of sea/air/land transport with strict handling protocols.

Need urgent after‑sales logistics support? Contact our global service team for a tailored quotation.

10-35kV Oil-Immersed Transformer

Type: 3-phase oil immersed distribution transformer

Rated Power: 30kVA-25,000kVA

Frequency: 50 HZ/60 HZ

Standards: IEC 60076 / GB 1094

             

Customize from Our Standard Product Line

If you spot a near-match in our catalog, we can quickly modify our standard transformers for your application. Adjustments cover capacity, voltage class, cooling type and installation structure.

Build per Your Technical Documents

Send us your specifications or drawings. Our engineering team reviews the design, validates all key parameters with you, and manufactures strictly in accordance with international standards.

Full Custom Design from Concept to Completion

Without formal detailed specs? Share your ideas and functional requirements. We partner with you to develop fully customized transformer solutions, from electrical design and structural layout through to insulation system.

Request a Quote

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