UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer

Overview of UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer

An oil-immersed transformer is a type of electrical transformer where the core and windings are submerged in an insulating oil. This oil serves two primary functions: it acts as a highly effective insulator between conductive parts and as a coolant to dissipate heat generated during operation. These transformers are robust, reliable, and highly efficient, making them the standard choice for high-voltage power distribution and transmission networks, typically installed outdoors in substations.

Features of UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer

• Effective Cooling: The insulating oil efficiently absorbs heat from the core and windings and transfers it to the radiator fins, allowing for natural or forced circulation and higher overload capacity.
• Superior Insulation: The oil provides much better dielectric strength than air, allowing for a more compact design for a given voltage rating and protecting against short circuits.
• Robust Construction: Designed for long-term, reliable operation (often 25-30 years) in harsh outdoor environments.
• Overload Capacity: Can handle temporary power overloads better than dry-type transformers due to the thermal mass and cooling properties of the oil.
• Protection System: Equipped with a conservator tank (to allow for oil expansion), breather (to absorb moisture from air), and protective relays (Buchholz relay) for internal fault detection.
• Cost-Effective: Generally more economical for high-power applications compared to dry-type transformers.

Specifications of UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer

These UL-listed oil-immersed transformers handle demanding power needs. Capacities range widely from 100kVA up to 5000kVA. Common ratings include 250kVA, 500kVA, 750kVA, 1000kVA, 1500kVA, 2550kVA, and 3000kVA. They step voltage up or down efficiently. Expect primary and secondary voltage ratings matching your specific application requirements. Standard voltages like 480V, 2400V, 4160V, 12,470V, or 13,800V are typical. Custom configurations are possible.

The core uses high-grade, grain-oriented electrical steel laminations. This minimizes energy loss and noise. Windings are copper or aluminum. They are precisely wound for reliable performance. Mineral oil fills the tank. This oil insulates the windings and cools the core. Heat dissipates naturally through the tank walls. Larger units add radiators or cooling fans. This ensures stable operation under full load.

These transformers meet strict UL standards for safety. They feature robust, welded steel tanks. This construction prevents leaks and protects internal parts. Accessories include pressure relief devices and temperature gauges. These monitor critical operating conditions. Most models offer tap changers. These adjust the output voltage slightly. This compensates for input voltage variations.

Efficiency is a key focus. Designs minimize no-load and load losses. This saves significant energy over the transformer’s long lifespan. Units are built for indoor or outdoor installation. Outdoor models often have weatherproof enclosures. Corrosion-resistant paint protects the tank. Installation is straightforward. Connections are clearly marked. They integrate reliably into electrical distribution systems. These transformers deliver dependable power conversion for industrial and utility use.

Applications of UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer

UL certified oil-immersed transformers handle power conversion reliably. These units come in sizes from 100kVA to 5000kVA. They step voltage up or down efficiently. The oil inside cools the core and windings effectively. This design ensures stable operation for many years. UL listing guarantees they meet strict safety standards.

Smaller units, like 100kVA or 250kVA, are common in commercial buildings. They power offices, shops, and small factories. They connect safely to the local utility grid. These transformers are often placed on pads outside or inside dedicated rooms.

Mid-size transformers, 500kVA to 1000kVA, serve larger facilities. Think manufacturing plants, hospitals, and university campuses. They manage the main power distribution within these sites. They feed power to smaller sub-panels throughout the building.

Bigger units, 1500kVA to 3000kVA, are vital for heavy industry. Foundries, large factories, and water treatment plants depend on them. They handle the massive electrical loads these operations require. They are robust enough for demanding industrial environments.

The largest transformers, like 2550kVA, 3000kVA, and 5000kVA, are key for utilities and huge projects. Power substations use them to transmit electricity across the grid. They are essential for feeding power into entire neighborhoods or industrial parks. Mines and large processing facilities also need this scale of power transformation.

These transformers are built tough. The oil insulation provides excellent cooling and protection. They withstand voltage fluctuations and surges well. Their robust construction makes them suitable for harsh locations. Outdoor installations are typical, often protected by fencing or enclosures. They are also used inside dedicated electrical vaults where space allows.

Renewable energy projects use these transformers too. They connect large solar farms or wind turbine arrays to the power grid. Oil-immersed transformers offer proven reliability for critical power infrastructure. They are a trusted solution for managing electricity safely and efficiently.

Company Profile

PDDN Photoelectron Technology Co., Ltd. is one of the leading enterprises in power electronics technology and power products, which is fully involved in developing solar inverters， transformers, voltage regulators, distribution cabinets, thyristors， modules， diodes， heaters, and other electronic devices or semiconductors. We will be committed to providing users with high-quality, efficient products and considerate service.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want high-quality UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer, please send us inquiries; we will be here to help you.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

5 FAQs of UL 100kVA 250kVA 500kVA 750kVA 1000kVA 1500kVA 2550kVA 3000kVA 5000kVA Oil Immersed Transformer

What are UL oil immersed transformers mainly used for?
These transformers power large facilities. They handle high voltage needs. Factories, hospitals, data centers, and big buildings use them. They step down utility voltage to safer usable levels inside. The 100kVA to 5000kVA range covers many industrial and commercial power demands.

Why choose oil immersed design?
Oil cools the transformer core and windings better than air. This allows higher power capacity in a smaller space. The oil also provides excellent insulation. This design handles overloads well. It gives reliable long-term performance for heavy-duty use.

Is UL certification important?
Yes. UL certification proves the transformer meets strict North American safety standards. It confirms safe electrical construction and materials. This certification is often required by building codes and insurance companies. It ensures safe operation for people and property.

How efficient are these transformers?
Modern UL oil transformers are very efficient. High efficiency means less wasted energy as heat. This saves significant electricity costs over the transformer’s lifetime. Look for models meeting or exceeding DOE 2016 efficiency standards. Higher efficiency models cost more initially but save money long-term.

Where can these transformers be installed?
They are versatile. Install them indoors in dedicated electrical rooms with proper ventilation and containment. Install them outdoors in secure yards or on pads. The robust oil-filled tank protects against weather and contaminants. Proper clearances and safety barriers are always needed.