Email:info@weisho.com
Oil immersed transformer manufacturer
WEISHO, as a leading manufacturer of air circuit breakers in the market, not only creates high-quality products with strict processes, but also provides the most competitive prices with its complete supply chain advantages. At the same time, we support OEM manufacturing and personalized customization services to help customers enhance their brand competitiveness and market value.
What are our characteristics
Production technology
Adopting industry-leading manufacturing processes, continuously optimizing production processes, and improving efficiency and accuracy
Customization and OEM/ODM
Supports OEM/ODM services and can provide customized solutions according to your needs, including rated current, brand identification, etc
High performance-price ratio
Efficient production and strong supply chain management ensure high quality and low prices, reducing customer procurement costs
Long term partnership
Putting customers at the center, establishing long-term stable cooperation, and assisting in the growth of customer business.
Customizable oil immersed transformer
Explore our various customized oil immersed transformers, widely used in power, industrial, and commercial distribution systems. We provide comprehensive solutions from efficient heat dissipation, strong insulation performance to long-lasting stable operation, helping you achieve safe, reliable, and efficient energy transmission and distribution security.
Efficient and energy-saving oil immersed power transformer
Durable oil immersed transformer for industrial use
Customized high-power oil immersed transformer
High reliability oil immersed distribution transformer
A brief introduction
WHY CHOOSE US
- Industry-leading testing: Every oil immersed transformer undergoes strict 100% testing in line with international safety and performance standards, ensuring stable operation.
- High-quality materials: Premium core (silicon steel) and winding (copper/aluminum) materials, combined with high-insulation oil, guarantee long service life and reliable performance.
- Engineering innovation: Our R&D team continuously optimizes transformer design (e.g., heat dissipation structure, insulation system) to enhance efficiency and overload capacity.
- Global certification: Our entire oil immersed transformer series has obtained IEC, CE, UL, and regional safety certifications, meeting global market requirements.
- Comprehensive support: We provide full-process services from product selection guidance and installation training to after-sales maintenance and oil replacement support.
Why choose oil immersed transformers?
The reason for choosing oil immersed transformers is their superior heat dissipation performance and long-term stable operation ability. Oil, as an insulation and cooling medium, can effectively extend the service life of equipment and ensure the reliability of the power system. At the same time, it has the characteristics of high efficiency, low loss, and strong adaptability, and is widely used in industrial, commercial, and power grid transmission and distribution fields.
Excellent Overload Tolerance
Oil immersed transformers offer reliable protection against overload conditions, effectively mitigating potential damage to power systems caused by excessive load currents.
- Strong overload capacity
- Efficient heat dissipation
- Adjustable protection thresholds
Advanced security features
Oil immersed transformers are equipped with multi-layer safety designs to reduce electrical risks and enhance operational stability.
- Overcurrent/overvoltage protection devices
- Enhanced insulation structure
- Temperature monitoring and alarm systems
Versatile Applications
Oil immersed transformers are adaptable to diverse environments and scenarios, serving as a core component for various power systems.
- Power grid transmission: For medium/high-voltage voltage conversion;
- Industrial plants: To supply stable power for heavy equipment;
- Commercial facilities: For large-scale power distribution.
Cost-Effective Solution
Investing in oil immersed transformers reduces long-term operational costs, thanks to their durable design and extended service life.
- Robust structure: High-quality materials resist wear and environmental corrosion;
- Lower maintenance costs: Insulating oil simplifies routine upkeep
- Long service life: Typically 20–30 years of stable operation, far exceeding short-life alternatives.
The advantages of our product
High arc extinguishing capability
Adopts optimized radiator design and high-quality insulating oil, which quickly dissipates heat generated during operation, ensuring stable performance even under long-term high-load conditions.
Intelligent monitoring functions
Compatible with intelligent power monitoring systems, supporting remote real-time monitoring of temperature, oil level, load status, and fault early warning, improving operational management efficiency.
Long service life
Uses corrosion-resistant materials and advanced insulation technology, with a service life of 20–30 years, far exceeding the average level of traditional transformers.
Controllable maintenance cost
The sealed oil tank design reduces oil replacement frequency; the simplified structure lowers routine inspection costs, effectively controlling long-term operation and maintenance expenditures.
Strong load adaptation capability
With high voltage withstand and large capacity design, it meets the power distribution needs of high-voltage, large-load scenarios, and adapts to complex grid environments.
Trusted brand guarantee
Obtains ISO, IEC, UL and other authoritative certifications, with wide application in global power systems, and provides comprehensive after-sales technical support.
Get Your Customized Quotation!
We provide customized solutions. Tell us your needs for a precise quote.
Not just an oil immersed transformer manufacturer
We don’t just produce oil immersed transformers—we also offer customized value-added services to meet your project needs. We strive for excellence, ensuring every customer receives personalized attention, professional guidance, and seamless support throughout our collaboration.
Technical Consultation
Whether your oil immersed transformer needs are basic applications or complex power projects, our team provides professional advice and technical consultation. For high-difficulty projects, we offer in-depth engineering support to select the optimal transformer solutions.
Product Recommendations
Unsure which oil immersed transformer fits your power system? Our experts give free customized advice based on your voltage, load, and environmental requirements, ensuring the product matches your power transmission/distribution needs.
Service Consultation
If you lack a reliable freight forwarder, we arrange factory-to-site transportation at no extra cost. Our logistics team ensures timely, safe delivery to keep your project on schedule.
Installation Support
We provide professional installation guidance for oil immersed transformers, including on-site technical support (if needed), to ensure correct deployment and stable performance.
What are our clients saying
Don’t just believe what we say! Take a look at satisfied customers' evaluations of our oil immersed transformers.
“These oil immersed transformers have greatly improved the stability of our substation power distribution…”
John Doe
Power System Engineer
“The transformers are easy to operate and highly efficient—they’ve simplified our daily power management…”
Tom Johnson
Industrial Plant Manager
“We trust these transformers for their durability; they’ve eliminated our concerns about frequent failures…”
James Brown
Power Grid Maintenance Supervisor
“Since switching to these oil immersed transformers, our maintenance costs have dropped sharply, and reliability has been outstanding…”
Maria Smith
Facilities Manager
WEISHO employs the most advanced production equipment and precise testing methods at all times, providing a solid guarantee for the company’s product manufacturing and quality inspection.
All products of the entire series have undergone strict environmental and electrical tests.
At the same time, the company has obtained ISO9001 quality management system and ISO14001 environmental management system certifications.
♥Wide selection
♥OEM Quality
♥100% Satisfaction Guarantee
Looking forward to working with you
Your trusted electrical equipment supplier
FAQ
Learn more about oil immersed transformers through these frequently asked questions.
What is an oil immersed transformer?
An oil immersed transformer is a power equipment that uses insulating oil as a cooling and insulation medium, mainly responsible for voltage conversion (stepping up/down) and energy transmission in power systems.
How do oil immersed transformers work?
It relies on electromagnetic induction: the primary winding receives electrical energy, generates a magnetic field through the iron core, and the secondary winding induces a voltage (matching the turn ratio) to realize voltage conversion and energy transfer.
Why use oil immersed transformers?
They have excellent insulation and heat dissipation performance, high load capacity, and long service life, making them the core equipment for medium/high-voltage power transmission and distribution.
What are the components of an oil immersed transformer?
Core components: Iron core (magnetic circuit), windings (electrical circuit), insulating oil, oil tank, radiator, and protection devices (e.g., oil conservator, pressure relief valve).
How often should oil immersed transformers be tested?
Can oil immersed transformers be used in residential applications?
Rarely—they are mainly used in power grids, industrial plants, and large commercial facilities. Residential power uses smaller dry-type transformers.
What maintenance do oil immersed transformers require?
Are oil immersed transformers environmentally friendly?
Most are: Insulating oil can be recycled; the equipment has a long service life (reducing waste); and low energy loss.
What sizes do oil immersed transformers come in?
Sizes are classified by capacity: Small (≤100kVA), medium (100–1000kVA), large (＞1000kVA), matching different power demands.
Do oil immersed transformers have a warranty?
Yes—typically 1–3 years, covering material defects and performance failures under normal operating conditions.
