10KV Oil-Immersed Transformer

Your Leading 10KV Oil-Immersed Transformer Supplier

 

Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.

 

 
 
Why Choose Us?

 

Production Capacity

With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.

Advanced Equipment

We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.

Quality Control

All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.

OEM & ODM Capability

Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.

 

Specifications of 10KV Oil-Immersed Transformer

 

Rated capacity
(kVA)

Rated voltage and tapping range

Vector group

No Load Current
(%)


Short-circuit impedance
(%)

No load Losses
(kW)(11)

On load Losses
(kW)(11)

HV

Tapping range

LV

200

10

±4×2.5

0.4

Dyn11 Yyn0

0.8

4

0.31

2.9

250

0.72

0.35

3.42

315

0.72

0.43

4.1

400

0.64

0.51

4.95

500

0.64

0.61

5.89

630

0.48

4.5

0.77

7.26

800

0.48

0.9

8.89

1000

0.48

1.09

10.4

1250

0.4

1.25

12.3

1600

0.4

1.54

14.7

2000

0.32

5

1.82

18.6

2500

0.32

2.14

21.6

 

Advantages of 10KV Oil-Immersed Transformer
 

Superior Thermal Management for Longevity
The most fundamental advantage of oil-immersed transformers, crucial for operations in high-load and elevated ambient temperature settings, is their superior thermal management system.

 

Robust Durability and Extended Lifespan
Oil-immersed transformers are engineered for exceptional durability, often achieving an operational lifespan exceeding 30 years when properly managed. This longevity is not accidental; it is a direct result of the design's inherent protection and a stringent maintenance protocol.

 

Optimized Power Density and Energy Efficiency
Oil-immersed transformers are foundational to efficient power distribution primarily due to two interrelated factors: their high power density and their ability to minimize energy losses even when operating at or near full capacity.

 

Strategic Advantage in Total Cost of Ownership (TCO)
While the initial capital expenditure for oil-immersed transformers may be higher than certain alternatives, their economic viability becomes evident when analyzing the Total Cost of Ownership (TCO) over a 30-year lifecycle. Choosing these units represents a long-term strategic investment that delivers substantial savings through superior efficiency and minimized maintenance requirements.

 

Maximized Reliability and Failure Prevention
The final and most critical advantage, particularly for infrastructure deployed in electrically volatile, harsh environments, is the significantly reduced risk of internal failure and short circuits. This enhanced safety is a direct function of the dielectric fluid's properties.

 

10KV Oil-Immersed Transformer vs. Dry-Type Transformers: A Comparative Summary

 

Feature

Oil-Filled Transformers

Dry-Type Transformers

Key Difference

Cooling Medium

Mineral/Synthetic Oil

Air/Natural Convection

Liquid vs. Air Cooling

Maintenance Needs

Requires oil testing

Minimal

Oil handling vs. dry design

Fire Safety

Needs containment/fire systems

Naturally fire-resistant

Higher fire risk for oil types

Installation Location

Indoor & Outdoor

Mostly Indoor

Flexibility vs. Safety Requirements

Power Capacity

High (up to grid-scale)

Lower (typically under 20 MVA)

Suitable for high-demand use cases

Energy Efficiency

Slightly higher on average

Slightly lower

Oil improves heat dissipation

 

10kV Oil-Immersed NLTC Transformer For New Energy Applications

 

Applications of 10KV Oil-Immersed Transformer

Power Generation
Used in generation plants to step up voltage for efficient transmission.

 

Transmission and Substations
Enable voltage regulation and loss minimization across large power networks.

 

Industrial Facilities
Provide stable voltage to drive heavy machinery, motors, and process systems.

 

Renewable Energy Systems
Connect wind or solar farms to main grids, ensuring smooth energy transfer.

 

Utilities and Distribution
Used by utilities for both primary and secondary voltage distribution in urban and rural networks.

 

 

Manufacturing Process

Core Lamination Process
The transformer core is manufactured using high-grade CRGO silicon steel to minimize core loss and improve efficiency.

 

Winding Process (Copper / Aluminum)
Windings are produced using high-conductivity copper or aluminum, depending on project requirements.

 

Vacuum Drying & Oil Filling
This process ensures optimal insulation performance and long-term reliability.

 

Testing & Quality Control
Each transformer undergoes strict testing procedures in accordance with international standards.

 

Final Assembly & Packaging
Final assembly ensures mechanical integrity and readiness for transportation and installation.

10kV Oil-Immersed NLTC Distribution Transformer manufacturers

 

Customization Options
 

Voltage: Optional

Capacity: Optional

Impedance: Optional

Cooling: Optional

OLTC: Optional

MOQ: Customizable

 

Payment Terms

T.T with 30% downpayment, 70%before shipment.

Paypal or West Union also accept.

 

Our Service Highlights

 

 

Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.

 

During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.

 

Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.

 

After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.

 

Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.

 

Packaging & Shipping

 

Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation. 

 

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Certificates

 

 

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FAQ

 

Q: How efficient are 10kV oil-immersed transformers?

A: They are designed with low no-load current (as low as ~0.32%) and optimized losses to reduce lifecycle operating costs.

Q: What standards do these transformers comply with?

A: They are generally designed to meet international standards such as IEC, IEEE, or ANSI, depending on project requirements and export markets.

Q: What are the common applications?

A: They are widely used in industrial plants, commercial buildings, residential areas, and infrastructure projects for medium-to-low voltage distribution.

Q: What are the common applications?

A: They are widely used in industrial plants, commercial buildings, residential areas, and infrastructure projects for medium-to-low voltage distribution.

Q: Are eco-friendly insulating oils available?

A: Yes, biodegradable fluids like FR3 are available for environmentally sensitive projects.

Q: Is this transformer suitable for harsh environments?

A: Yes, designs can include anti-corrosion coating, IP-rated enclosures, and high-temperature insulation.

Q: What is the typical lead time for a 10kV oil-immersed transformer?

A: Standard delivery is 3–6 weeks depending on capacity and customization level.

Q: Are these transformers suitable for outdoor installation?

A: Yes, oil-immersed designs are suitable for both indoor and outdoor environments due to strong insulation and heat dissipation performance.

We're well-known as one of the leading 10kv oil-immersed transformer manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality 10kv oil-immersed transformer made in China here from our factory. Contact us for more details.

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