Three Phase Cast Resin Distribution Transformer

The Three Phase Cast Resin Distribution Transformer is Usune's core dry-type power distribution equipment. Unlike traditional oil-immersed transformers, it contains no insulating oil and uses high-temperature epoxy resin vacuum-cast coils, with air as the primary insulation and cooling medium. The product features a compact structure, excellent safety performance, and can be directly installed indoors without the need for a dedicated oil tank or fireproof isolation facilities. It is widely used in various power supply scenarios with stringent safety, environmental, and reliability requirements.

As a manufacturer deeply rooted in the electrical field, Usune leverages China's mature supply chain system and technological accumulation to create this transformer, balancing performance and cost to provide stable and efficient power distribution solutions for global customers.

Core Features

1. Fireproof and Explosion-proof, Safe and Reliable

The Three Phase Cast Resin Distribution Transformer uses high-temperature resistant insulation materials and has no internal insulating oil, eliminating the risk of fire, explosion, and oil leakage. Its high safety level makes it suitable for densely populated or high-risk environments.

2. Environmentally Friendly and Pollution-Free, Green and Energy-Saving

With no oil pollution and no harmful gas emissions, it meets environmental standards. Using high-quality silicon steel sheets, it has low no-load and load losses, effectively reducing operating energy consumption and contributing to green and low-carbon development.

3. Low Noise and Low Partial Discharge, Stable Operation

Optimized core and winding structure results in low operating noise (≤60dB); low partial discharge ensures long-term stable operation and reduces the risk of failure.

4. Maintenance-free and convenient operation and maintenance

Air insulation and air cooling design eliminates the need for insulating oil replacement, simplifying daily operation and maintenance and significantly reducing later maintenance costs and downtime.

5. Strong environmental adaptability

Adaptable to harsh environments such as high humidity, high altitude, and high dust levels, suitable for various scenarios including indoors, underground, subways, hospitals, and schools.

6. Compact structure and flexible installation

The Three Phase Cast Resin Distribution Transformer is small in size and lightweight, occupying little space, facilitating transportation and on-site installation, and adaptable to deployment requirements in confined spaces.

Working Principle

1. When alternating current passes through the primary winding, an alternating magnetic flux is generated in the iron core;
2. The alternating magnetic flux passes through the secondary winding, inducing an alternating electromotive force in the secondary coil through electromagnetic induction;
3. Based on the turns ratio of the primary and secondary windings, the alternating voltage is increased or decreased, and electrical energy is transferred.

Unlike oil-immersed transformers, this Usune transformer uses air as the insulating cooling medium between the windings and the core, relying on natural or forced air cooling for heat dissipation, safely and stably completing voltage conversion and power transmission.

Technical parameters

Project Reference

Cas-space Rocket Launch Project

Test Report

Real-world Application Cases

Case 1: Indoor Power Distribution Project at a Top-Tier Hospital

This hospital has extremely high requirements for power supply safety and stability, and selected the Usune Three Phase Cast Resin Distribution Transformer (1000kVA, 10kV/0.4kV). The product is fireproof, explosion-proof, low-noise, and environmentally friendly. Installed in the hospital's underground power distribution room, it requires no special fire protection facilities, has operated without failure for 3 years, with noise levels below 55dB and no pollution, ensuring continuous power supply to critical areas such as operating rooms and intensive care units.

Case 2: Urban Subway Line Power Supply Upgrade Project

A certain urban subway line needed to upgrade its indoor power distribution system to adapt to the high humidity and dusty underground environment. Usune, as the designated supplier for the project, provided multiple 2500kVA resin-cast transformers. These products are moisture-proof, dust-proof, maintenance-free, and suitable for harsh underground environments. After installation, maintenance workload is reduced by 60%, ensuring stable power supply for subway operations.

FAQ

Q1: What are the core advantages of Usune resin-cast transformers compared to oil-immersed transformers?

A1: The core advantages are concentrated in three dimensions: safety, environmental protection, and maintenance. No insulating oil eliminates the risk of fire, explosion, and oil leakage, resulting in a higher safety level; no oil pollution and no harmful gas emissions enhance environmental friendliness; the air insulation design eliminates the need for oil changes, requiring no maintenance and making it suitable for indoor environments. In contrast, oil-immersed transformers require regular oil changes and fireproof isolation facilities, leading to higher maintenance costs and greater safety risks.

Q2: What are the environmental conditions and installation requirements for the Three Phase Cast Resin Distribution Transformer?

A2: Suitable for ambient temperatures of -20℃ to 60℃, and can withstand high humidity (≤95%, non-condensing), high altitude (≤3000m), and dusty environments; installation requires no special foundation, can be directly floor-mounted or wall-mounted; indoor installation requires no oil bath or fireproof partition, only pre-reserved space for heat dissipation, making installation convenient and flexible.

Q3: What is the product warranty period? What after-sales services are provided?

A3: As a certified manufacturer, Usune provides a 3-year product warranty (from the date of successful installation and acceptance). During the warranty period, faulty parts will be repaired or replaced free of charge; lifetime technical support, remote fault diagnosis, and on-site operation and maintenance guidance are also provided. Relying on a local Chinese factory, we can quickly respond to customer needs and ensure long-term stable operation of the equipment.