Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes

Overview of Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes

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 Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes

• 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 Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes

These oil-immersed power transformers step down voltage. They take 35,000 volts (35kV) in. They deliver 11,000 volts (11kV) out. This fits common power distribution needs. Three-phase operation is standard. It handles heavy loads efficiently.

Oil fills the tank. This oil cools the transformer. It insulates the internal parts too. The oil circulates naturally. Heat rises from the core and windings. Cooler oil sinks back down. This keeps temperatures safe. An oil conservator tank helps. It allows for oil expansion. It prevents air contact.

The core uses laminated silicon steel. This minimizes energy losses. Copper or aluminum makes the windings. These materials conduct electricity well. The design focuses on low losses. It also focuses on quiet running. Noise levels are controlled.

These transformers come in three sizes. You can get 50 kilovolt-amperes (50kVA). You can get 400 kilovolt-amperes (400kVA). You can get 630 kilovolt-amperes (630kVA). Different sizes serve different loads. Choose based on your power demand.

Reliability is key. The tank is welded steel. It holds the oil securely. Bushings connect the high and low voltage cables. They are strong porcelain or composite. Gaskets seal all openings. This prevents oil leaks. Rust protection is applied externally. This ensures a long life outdoors.

Installation needs a solid foundation. Good ventilation is important. Regular checks are necessary. Monitor the oil level. Check the temperature gauges. Look for any leaks. Sample the oil periodically. Test its insulating strength. This confirms the transformer’s health. Follow the manufacturer’s maintenance schedule.

Applications of Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes

These oil-immersed power transformers take high-voltage 35kV electricity and change it to a safer, usable 11kV level. They handle large amounts of power reliably. Three-phase operation is standard. You find them in sizes like 50kVA, 400kVA, and 630kVA. This covers many common power needs.

Factories use these transformers heavily. Machines need stable 11kV power. The transformer provides this. It connects the factory directly to the main 35kV grid supply. The oil inside cools the transformer effectively. This allows it to run continuously under heavy load. Industrial settings demand this toughness.

Local power distribution relies on them too. They step down the voltage from transmission lines. This makes the power safe for feeding into smaller neighborhood substations. These substations then supply homes and businesses. The oil insulation helps manage the high voltage safely. Contained leaks prevent environmental issues.

Renewable energy projects need them. Wind farms or solar parks generate power. Often this power exits at medium voltage levels. The transformer connects this generation to the wider 35kV distribution network. It ensures the clean energy gets where it’s needed. The transformer handles variable input from renewables well.

Large buildings and campuses benefit. Hospitals, universities, or big shopping centers use lots of power. They might have their own internal 11kV distribution. The transformer provides the link between the utility’s 35kV feed and the building’s own electrical system. The oil cooling handles the heat generated inside electrical rooms.

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 Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes, 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 Oil-Immersed Power Transformer 35KV Input 11KV Output Three-Phase Available in 630KVA 50KVA 400KVA Sizes

What is this transformer?
This is an oil-filled power transformer. It takes three-phase electricity at 35,000 volts and reduces it to 11,000 volts. It comes in three power sizes: 50KVA, 400KVA, and 630KVA. The oil inside cools the transformer and insulates its parts.

Where is it used?
This transformer is built for places needing reliable medium voltage power distribution. It works well for factories, large buildings, water treatment plants, and mining operations. It steps down voltage from higher distribution lines to levels usable by local equipment.

What space is needed?
Install this transformer outdoors on a strong concrete pad. It needs good air flow around it. Keep it away from walls or other equipment. Make sure the area is clear for safety and maintenance access. Follow local electrical codes for clearances.

How does cooling work?
The transformer tank is filled with special insulating oil. Heat from the core and windings transfers to this oil. The hot oil naturally rises. It moves through radiator fins attached to the tank. Air flowing over these fins cools the oil. The cooled oil sinks back down. This cycle keeps the transformer at a safe temperature.

What maintenance is required?
Check the oil level regularly using the gauge. Look for any leaks around gaskets or valves. Take oil samples for testing. This checks the oil’s insulating strength and finds problems inside. Keep the outside surfaces clean. Inspect the bushings and connections periodically. Follow the manufacturer’s maintenance schedule.