110kV/220kV Oil-Immersed Transformer

Type: 3-phase oil immersed distribution transformer

Rated Power: 6300kVA–180000kVA

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.

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

Overview

Mainly used in regional grid hub substations for power transmission, voltage conversion, and distribution. Also widely adopted in step-up grid connection, as well as in critical infrastructure such as urban rail transit traction power and high-reliability power supply for large data centers

Bardeen’s 110kV/220kV oil-immersed transformer represents a robust solution engineered for high-voltage power transmission, substation equipment integration, and renewable energy storage projects. This oil-immersed transformer is designed to meet the most demanding requirements for grid reliability while delivering long-term operational stability and ease of maintenance

Product Overview

Product Features and Design Highlights

Product Features and Design Highlights

The bardeen 110kV/220kV oil-immersed transformer features an optimized core and coil assembly that reduces no-load losses and improves overall efficiency. The transformer core utilizes high-grade silicon steel with precision stacking techniques to minimize core loss and audible noise, ensuring long-term grid reliability. The winding design employs low-loss copper or aluminum conductors with high mechanical strength to withstand short-circuit forces and thermal cycles. The conservator, breather, and oil-immersion design ensure stable dielectric performance and prolonged insulation life for all high-voltage substation equipment

Advanced Insulation and Cooling Systems

Bardeen adopts an optimized oil-immersion cooling system that enhances heat dissipation for continuous operation under heavy load conditions. The oil-immersed transformer uses high-quality mineral insulating oil with excellent dielectric properties and thermal conductivity

Applications: Renewable Energy Storage and Grid Infrastructure

The bardeen 110kV/220kV oil-immersed transformer is ideally suited for renewable energy storage integration, linking storage assets such as battery energy storage systems (BESS) and large-scale photovoltaic or wind farms to the transmission grid. As renewable energy storage continues to expand, reliable substation equipment becomes critical in handling bidirectional power flows, voltage regulation, and fault ride-through capabilities, further strengthening grid reliability

Customization and Technical Flexibility

Understanding that each project has unique specifications, bardeen offers extensive customization for its oil-immersed transformer range. The company provides tailored tap-changer configurations, tertiary winding options, special insulation systems for harsh environments, and bespoke bushing arrangements to meet specific site constraints for renewable energy storage projects

Manufacturing Excellence and Quality Assurance
Bardeen’s manufacturing processes for the oil-immersed transformer adhere to international standards, including IEC certification for high-voltage transformers. Quality control protocols cover material selection, winding tension monitoring, vacuum impregnation, and strict electrical testing such as induced overvoltage tests, power frequency withstand tests, and impulse testing

Innovation and Technical Advantages

Innovation and Technical Advantages
Bardeen’s oil‑immersed transformer integrates innovations that deliver technical advantages over traditional designs. Improved low‑noise construction and vibration‑damping elements reduce acoustic impact at installation sites. Enhanced dielectric systems and meticulous oil filtration processes extend transformer service life and reduce oxidation‑related degradation

Integration with Substation Equipment and Grid Systems
Seamless integration with substation equipment is a priority for the bardeen oil‑immersed transformer. Standardized interfaces for protective relays, tap changers, and control cabinets make deployment with existing substation equipment efficient and reliable

Technical Support and Lifecycle Services
Bardeen extends post‑sale technical support and lifecycle services to maximize the performance of each oil‑immersed transformer. Services include commissioning assistance, periodic maintenance contracts, oil testing services, and rapid spare parts supply. For renewable energy storage and utility customers, bardeen offers tailored service agreements to align maintenance windows with operational schedules, ensuring the oil‑immersed transformer continues to contribute to uninterrupted power delivery and enhanced grid reliability

The bardeen 110kV/220kV oil‑immersed transformer is a high‑performance, reliable solution for modern power systems. With a focus on grid reliability, compatibility with renewable energy storage, and integration into substation equipment environments, this oil‑immersed transformer delivers optimized efficiency, superior insulation and cooling, and strong technical adaptability

110kV Parameters

Rated Capacity - kVA	High Voltage - kV	Low Voltage - V	Connection Group Symbol	Short‑circuit Impedance - %	No‑load Loss - kW	Load Loss - kW	No‑load Current - %
6300	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	10	36	0.8
8000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	12	45	0.8
10000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	14	53	0.74
12500	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	17	63	0.74
16000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	20	77	0.69
20000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	24	93	0.69
25000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	28	110	0.64
31500	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	34	133	0.64
40000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	40	156	0.58
63000	110, 121, 151	6.3, 6.6, 10.5, 11	YNd11	10.5	57	230	0.52

220kV Parameters

Rated Power - kVA	High Voltage - kV	Low Voltage - V	Connection Symbol	Short Circuit Impedance - %	No‑load Loss - kW	Load Loss - kW	No‑load Current - %
31500	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	30	138	0.5
40000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	36	165	0.48
50000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	43	180	0.48
63000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	50	220	0.44
90000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	64	275	0.35
120000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	80	369	0.35
150000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	93	450	0.31
180000	220, 230	6.3, 6.6, 10.5, 11, 20, 34.5, 66, 69	Yd11	12‑14	105	530	0.31

Application

Application Scenarios

Regional grid hub substations for power transmission, voltage conversion, and distribution

Step‑up grid‑connection projects for photovoltaic and wind power stations

Critical infrastructure including urban rail transit traction power

Large‑scale data centers requiring high‑reliability power supply

Overseas engineering projects and power‑infrastructure development

Why Choose Bardeen

Technical Specifications

Product Type	Oil Immersed Transformer
Rated Capacity	31500‑180000kVA
Voltage Class	110kV / 220kV
Rated Frequency	50Hz/60Hz
Number of Phases	Three‑phase - subject to product configuration
Cooling Method	ONAN / ONAF / OFAF, subject to product type confirmation
Installation Method	Outdoor or indoor installation
Applicable Standards	IEC 60076 / GB 1094

FAQ

Frequently Asked Questions

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

Assessment & Planning

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

Professional Packaging

Seaworthy packing

Multimodal Transit

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

110kV/220kV Oil-Immersed Transformer

Type: 3-phase oil immersed distribution transformer

Rated Power: 6300kVA–180000kVA

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

110kV/220kV Oil-Immersed Transformer

Overview

Product Overview

Product Features and Design Highlights

Innovation and Technical Advantages

Innovation and Technical Advantages

Application

Application Scenarios

Why Choose Bardeen

Why Choose Bardeen

Technical Specifications

Technical Specifications

FAQ

Frequently Asked Questions

Transportation Services & Process

Transportation Services & Process

1. Heavy‑Lift & OOG Expertise

2. Customs & Compliance Management

3. Real‑Time Visibility & Risk Control

4. Emergency Response

Process

Assessment & Planning

Professional Packaging

Multimodal Transit

110kV/220kV Oil-Immersed Transformer

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