3 Phase Dry Type Distribution Transformer, 10kVA/50kVA/200kVA

3 phase dry type dstribution transformer

Engineered for demanding power distribution applications, this three-phase dry-type distribution transformer offers customized configurations based on specific project requirements. With ratings up to 35kV and 15,000kVA, dry type DTR transformer features flame-retardant performance, high operational reliability, and maintenance-free operation, suitable for utility systems, industrial facilities, and engineering projects.

Specifications

Voltage Levels	35 kV and below (including dual voltage)
Capacity	15000kVA and below
Tapping Range	±2×2.5% (or customer specify)
Frequency	50Hz or 60 Hz
Insulation Level	Voltage grades: 6kV / 10kV / 20kV / 35kV Power frequency withstand voltage: 28kV / 50kV / 70kV / 80kV Lightning impulse voltage: 75kV / 125kV / 170kV / 200kV
Protection Grade	NEMA 1 or NEMA 3R
Connections	Dyn 11; Yyn0 or other
Cooling Type	AN/AF
Insulation Class	F or H
Application Conditions	less than 1000 meters above sea level, the environment temperature is lower than 40 ℃. Correction should be carried out in accordance with standards if the application is beyond the above conditions.
Application Scenario	Due to its good moisture-proof and anti-corrosion performance, dry-type transformers are widely used in power plants, ports, rail transit, water conservancy and hydropower, airports, dock CNC mechanical equipment and other places.

Note: Capacity, primary voltage, secondary voltage, and certification requirements are customizable.

Dry Type Distribution Transformer Features

Fire-Safe & Reliable Design

Uses cast-resin insulation technology to provide excellent fire resistance, environmental protection, and safe operation without additional fire protection requirements.

Maintenance-Free Operation

Designed for easy installation, low operating costs, and long-term stable performance with minimal maintenance requirements.

High Moisture Resistance

Operates reliably under high humidity conditions up to 100% relative humidity and can be quickly re-energized after outages without pre-drying treatment.

Compact Energy-Efficient Structure

Features a compact structure, lightweight design, low power loss, low noise, and efficient heat dissipation for reliable operation.

Strong Overload Protection

Provides excellent thermal shock resistance and overload capability while maintaining stable performance in harsh environments.

Certified Quality Standards

Manufactured according to IEC 726, GB6450, and GB/T10228-1997 standards to ensure consistent quality and reliability.

Dry Type Power Distribution Transformer Advantages

Designed for Safe and Flexible Installation:ATO 3 phase cast-resin dry-type distribution transformer features flame-retardant insulation and an oil-free structure, making it suitable for installation in indoor spaces and applications with strict fire safety requirements. Its environmentally friendly design provides greater flexibility for modern power distribution systems.
Optimized for Efficient Power Distribution: Designed for stable and continuous operation, this transformer combines excellent insulation performance, strong overload capability, and low maintenance requirements. It supports reliable power supply in complex operating conditions while reducing lifecycle costs for users.

Applications

3 phase cast-resin dry-type distribution transformers are widely applied in power transmission and distribution systems for a variety of commercial, industrial, infrastructure, and special-purpose facilities. They are commonly used in hotels, restaurants, stadiums, subways, railways, airports, commercial centers, high-rise buildings, offshore drilling platforms, petroleum engineering facilities, and heavy-load industrial centers. With excellent fire resistance, environmental adaptability, and reliable operation, these power distribution transformers are particularly suitable for locations with strict safety and fire protection requirements, where stable power supply, low maintenance, and long-term reliability are essential.

FAQs

1. What is a 3 phase cast-resin dry-type distribution transformer?

The three-phase cast-resin dry-type distribution transformer is an electrical transformer that uses epoxy resin insulation instead of transformer oil. It is designed to step down medium voltage power to low voltage levels for safe and reliable power distribution in various electrical systems.

2. What are the advantages of a dry-type power distribution transformer?

Cast-resin dry-type distribution transformers offer advantages such as fire resistance, environmental safety, low maintenance requirements, low noise operation, high mechanical strength, and excellent reliability in harsh environments.

3. Why choose a dry-type transformer instead of an oil-immersed transformer?

ATO cast-resin dry-type transformer is preferred in applications requiring high fire safety, environmental protection, and low maintenance. Unlike oil-immersed transformers, it does not use flammable insulating oil, reducing the risk of fire and oil leakage.

4. What voltage ratings and capacities are available for 3 phase dry-type transformers?

Three-phase cast-resin dry-type distribution transformers can be customized with different voltage ratings, power capacities, and technical specifications according to specific power distribution requirements.

5. How does a cast-resin dry-type transformer perform in humid environments?

Cast-resin dry-type distribution transformers have excellent moisture resistance and can operate reliably in high-humidity environments. Their epoxy resin insulation helps protect the transformer from moisture, dust, and other environmental factors.

6. What maintenance is required for a cast-resin dry-type distribution transformer?

Cast-resin dry-type distribution transformers require minimal maintenance. Regular inspections of electrical connections, insulation condition, temperature monitoring systems, and cooling components help ensure long-term safe operation.