Three phase oil immersed distribution transformer

Three Phase Oil Immersed Distribution Transformer - Reliable Power Solutions for Your Facility

Our Three phase oil immersed distribution transformer works very well when your building needs power that doesn't go out. At Xuzhou Tuojie International Trade Co., Ltd., we make transformers with ratings ranging from 30KVA to 31,500KVA. These transformers are more than 98.5% efficient and can be used for 25 to 30 years. Our goods have advanced copper windings that cut no-load losses by 30% compared to regular models. Also, our strict ISO9001 quality management makes sure that there are no defects in the production process. We've completed hundreds of important projects in the business, industrial, and local sectors—always on time and to specification—using more than 120 sets of state-of-the-art tools, such as CNC automatic winding machines and static vacuum casting systems.

What Makes Oil Immersed Transformers Essential for Your Operations?

When it means most, you need tools that work. This type of transformer fully submerges the core and windings in mineral oil. This makes a system that cools and insulates at the same time. When compared to dry types, oil is better at getting rid of heat, so you can use higher power levels in smaller areas.

Your power problems need tried-and-true answers. Maintaining stable voltage across your distribution network, controlling heat in high-load situations, keeping insulation from breaking down in harsh settings, and making sure that sensitive equipment always has the right power quality are all problems that these transformers solve.

Mineral oil has a flash point above 140°C and an electrical strength of 30–60kV. This means that even in harsh situations, your generator will be safe. The temperature rise stays between 65K and 60K for the windings and oil, so the machine can work reliably in temperatures as low as -40°C in hard conditions.

Technical Specifications That Match Your Requirements

Our transformers comply with GB1094-1996, GB/T6451-2008, and international IEC60076 standards. You get equipment that meets both local regulations and global quality benchmarks.

Where Your Transformer Delivers Maximum Value?

Industrial Manufacturing Facilities

Your factories can't have any downtime. Our transformers power big equipment and motor drives in steel mills, chemical plants, and car factories. They can handle overloads of up to 120% of their rated output. The oil absorption design works well in tough environments like high temperatures, dust, and corrosive atmospheres that would damage other designs.

We've helped XCMG Group update factories and power several industrial parks, finishing projects early without lowering the quality. This amount of dependability is needed for your activities.

Commercial and Urban Distribution

In the middle of cities, space is limited. Our small Three phase oil immersed distribution transformer units can be installed in the basements of hospitals, shopping malls, and high-rise buildings. If it's less than 50dB quiet, your renters won't be able to hear it running.

Our transformers make sure that projects like Xinhuai Central Complex and Xuzhou Fantawild Adventure always have power. When your image is at stake, you can't let your tools break down.

Infrastructure and Municipal Projects

Absolute dependability is needed for important state services. Our ideas for dual-circuit power supplies keep places like the Xuzhou Rail Transit Network Control Centre and the Xuzhou High-speed Railway East Station running without interruption. Every unit has safety limits built in to protect important systems.

Renewable Energy Integration

Your wind farms and solar installations need equipment that handles variable loads in remote locations. Our oil preservation systems and robust construction minimize maintenance requirements in desert heat, coastal salt spray, or arctic cold. From GCL Photovoltaic Industrial Park to rural electrification projects, these transformers adapt to your environment.

Key Advantages That Protect Your Investment

Lower Total Cost of Ownership

You save from day one. Initial investment costs less than alternatives, while superior efficiency reduces operating expenses throughout the 25-30 year lifespan. Lower no-load current (reduced by 70-80% in S11 series) means minimal energy waste when you're at partial load.

Exceptional Durability

Your transformer withstands overloads and environmental extremes. The sealed tank design with anti-corrosion coating protects against humidity, salt spray, and temperature fluctuations. It's built for outdoor installation where conditions challenge lesser equipment.

Scalable Capacity

From 30KVA for small facilities to 31,500KVA for major industrial operations, we match your exact requirements. Ultra-high voltage capability means one solution grows with your expanding needs.

Predictive Maintenance

You stay ahead of problems. Mature fault diagnosis systems enable condition monitoring before issues become failures. This reduces unplanned downtime and extends equipment life.

Environmental Performance

Modern eco-friendly insulating fluids enhance safety while meeting environmental regulations. You get reliable operation without compromising sustainability goals.

Our Manufacturing Excellence

We don't just assemble components—we engineer solutions. Our team includes 15 senior engineers, over 30 intermediate technicians, and 17 senior technicians. This expertise has produced 18 patents in transformer technology.

Production quality starts with equipment. Our CNC automatic winding machines ensure precise coil geometry. Static vacuum casting machines eliminate moisture and air pockets. Microcomputer-controlled gradient curing furnaces optimize insulation properties. Every step follows ISO9001 protocols.

Quality control monitors every stage: raw material procurement, incoming inspection, production, finished product testing, warehousing, delivery, and installation. We operate on a "zero defects" principle because your operations depend on it.

Why Leading Companies Choose Our Transformers?

Hundreds of completed projects demonstrate our capability. Municipal engineering projects achieve absolute safety standards—critical for rail transit systems. Commercial developments like Tianyu Yayuan earned top quality assessment results. Industrial clients including XCMG Group and Huaihai Biomedical Industrial Park rely on our ahead-of-schedule delivery without quality compromise.

Certifications validate our quality: ISO9001, ISO14001, OHSAS45001, CE marking, CSIT approval, and National CCC Mandatory Certification for all low-voltage components. We also hold Southern/State Grid prequalification and CNNC supplier status.

Your unique requirements receive tailored solutions. Different vector groups (Dyn11 / Yyn0 / Yd11) accommodate harmonic suppression needs. Insulation classes F or H match your temperature requirements. Copper or aluminum windings optimize your budget and performance balance.

FAQ

Q: How long will my transformer last?

You can expect 25-30 years of reliable operation with proper maintenance. Our grain-oriented silicon steel cores and oxygen-free copper windings resist degradation. The sealed oil preservation system prevents contamination that shortens equipment life.

Q: What maintenance does it require?

Minimal intervention keeps your transformer running. Periodic oil testing monitors insulation integrity. Visual inspections check for leaks. Our predictive maintenance systems alert you to potential issues before they cause failures. Remote locations benefit from this low-maintenance design.

Q: Can it handle my variable loads?

Yes. The product design manages overloads up to 120% of rated capacity. This flexibility suits renewable energy applications with fluctuating generation and facilities with cyclical demand patterns.

Q: How quiet is the operation?

Noise stays below 50dB—quieter than normal conversation. This makes our transformers suitable for basement installations in commercial buildings, hospitals, and residential areas where noise complaints create problems.

Q: What if I need custom specifications?

We provide tailored solutions. Your voltage requirements, environmental conditions, and space constraints shape our design. Whether you need special corrosion protection for coastal installation or altitude compensation for mountain sites, we adapt to your parameters.

Q: Is it safe for indoor installation?

Absolutely. The sealed tank design contains oil even during maintenance. Modern eco-friendly insulating fluids reduce fire risk compared to traditional mineral oil. Proper ventilation and safety protocols make indoor installation common in urban substations.

Q: How does it perform in extreme temperatures?

Our transformers operate reliably from -40°C to +40°C ambient temperature. The ONAN cooling system adapts naturally to conditions, while optional ONAF forced air cooling extends capacity in high-temperature environments.

Q: What's your delivery timeline?

Project complexity determines schedule, but we consistently deliver ahead of contractual deadlines. Our 120+ production equipment sets enable efficient manufacturing without sacrificing quality inspection protocols.

Contact Us

Your facility deserves reliable Three phase oil immersed distribution transformer power distribution. Contact our engineering team at tuojie@electricinchina.com to discuss your specific requirements and receive a customized solution.