GaoJing is a professional dry type transformers manufacturer in China, specializing in the R&D and manufacturing of energy-efficient transformers for industrial, commercial, infrastructure, transportation and renewable energy power distribution systems.

Our current dry-type transformer range focuses on cast resin dry type transformers, including conventional silicon steel laminated core transformers, silicon steel tridimensional toroidal core transformers, and amorphous alloy tridimensional toroidal core transformers. With capacities from 50 kVA to 5000 kVA and voltage classes covering 10 kV, 20 kV and 35 kV, GaoJing can provide transformer configurations according to different load conditions, installation environments and energy-efficiency requirements.

Compared with oil-immersed transformers, dry-type transformers do not require insulating oil, making them particularly suitable for indoor installations and locations where fire safety, environmental protection, maintenance requirements and installation space are important considerations.

Types of Dry Type Transformers We Manufacture

GaoJing currently manufactures three main dry-type transformer configurations.

SCB Silicon Steel Laminated Core Dry Type Transformer

The SCB series uses a conventional three-phase laminated silicon steel core combined with resin-cast windings.

The core adopts high-permeability cold-rolled silicon steel and a multi-step laminated joint structure to reduce local magnetic concentration and iron loss.

This type offers a practical balance between investment cost, electrical performance and reliability, making it suitable for:

● Manufacturing plants
● Machinery workshops
● Metallurgical facilities
● Chemical plants
● Commercial buildings
● Office buildings
● Municipal power distribution systems

It is a suitable choice for general distribution applications and operating conditions with relatively large load fluctuations.

SCB-RL Silicon Steel Tridimensional Toroidal Core Dry Type Transformer

The SCB-RL series combines epoxy resin insulated windings with a tridimensional toroidal silicon steel core.

Unlike conventional planar laminated cores, the tridimensional core provides a highly symmetrical three-phase magnetic circuit. This helps reduce magnetic reluctance, excitation current, vibration and no-load loss while maintaining balanced operating characteristics.

The compact core structure also makes this transformer suitable for installations where noise, efficiency and available space are important.

Typical applications include:

● Residential power distribution rooms
● Hospitals
● Data centers
● Shopping malls
● High-rise buildings
● Subway systems
● Railway stations
● Commercial facilities with limited installation space

SCBH-RL Amorphous Alloy Tridimensional Toroidal Core Dry Type Transformer

For projects with higher energy-efficiency requirements, GaoJing also manufactures the SCBH-RL amorphous alloy tridimensional toroidal core dry-type transformer.

Instead of conventional silicon steel, this transformer uses an amorphous alloy core designed to significantly reduce no-load losses.

Combined with the symmetrical tridimensional magnetic circuit, the design provides low operating loss, balanced three-phase performance and efficient heat dissipation.

It is particularly suitable for:

● Energy-saving power distribution projects
● Photovoltaic and renewable energy systems
● Hospitals
● Rail transit
● Airports
● Ports
● Utility distribution upgrades
● Projects requiring low long-term operating losses

Dry Type Transformer Technical Parameters

GaoJing dry type transformers can be configured according to project electrical requirements and installation conditions.

Actual transformer parameters can be designed according to rated capacity, primary and secondary voltage, load characteristics, installation environment, required loss level and cooling conditions.

Where Are Dry Type Transformers Used?

Dry type transformers are commonly installed close to electrical loads because they require no transformer oil and are well suited to enclosed or indoor power distribution environments.

Industrial Facilities

For factories and processing facilities, dry-type transformers can supply machinery, motors, production lines and other industrial loads.

Typical industries include:

● Mechanical manufacturing
● Metallurgy
● Chemical processing
● Industrial workshops
● Automated production facilities

Commercial and Residential Buildings

Dry transformers can be installed in building distribution rooms, basements and other indoor locations.

Typical applications include:

● Shopping malls
● Office buildings
● Residential complexes
● High-rise buildings
● Hotels
● Public buildings

Hospitals and Data Centers

Hospitals and data centers require stable power distribution together with attention to equipment reliability, operating noise and indoor installation safety.

SCB-RL tridimensional core dry-type transformers are particularly suitable for these applications because of their balanced magnetic circuit and low-noise design.

Rail Transit and Transportation Infrastructure

Dry-type transformers are also used in infrastructure where electrical equipment may be installed inside stations or other enclosed areas.

Applications include:

● Metro systems
● High-speed railway stations
● Airports
● Ports
● Transportation hubs

Renewable Energy and Energy-Saving Projects

Amorphous alloy dry-type transformers are suitable for projects where reducing transformer no-load losses is an important part of overall system efficiency.

They can be used for:

● Photovoltaic projects
● Renewable energy facilities
● Distribution network energy-saving upgrades
● Low-carbon industrial projects
● High-efficiency power distribution systems

How to Choose the Right Dry Type Transformer

Different dry-type transformer designs are suitable for different project priorities.

Choose an SCB laminated core transformer when:
You need a reliable and economical transformer for general industrial or commercial power distribution.

Choose an SCB-RL tridimensional toroidal core transformer when:
You require lower noise, reduced losses, compact dimensions and balanced three-phase magnetic performance.

Choose an SCBH-RL amorphous alloy transformer when:
Long-term energy consumption and no-load loss are major considerations, especially for transformers that remain energized continuously.

If you are unsure which configuration is suitable, provide GaoJing with your required capacity, primary voltage, secondary voltage, load characteristics, installation environment and project requirements. Our engineers can recommend an appropriate transformer configuration.

Why Choose GaoJing as Your Dry Type Transformer Manufacturer?

Transformer Manufacturing and R&D Capability

GaoJing integrates transformer research, development, manufacturing and sales. Founded in 2008, the company has developed extensive experience in energy-efficient transformer technology, particularly tridimensional toroidal core transformers.

The company operates a production base covering approximately 100,000 m², with more than 600 employees and multiple high-standard automated production workshops.

Large-Scale Production Capacity

GaoJing has established full-chain manufacturing capabilities for core transformer components and finished transformer assembly.

Our annual transformer production capacity reaches approximately 100,000 units/sets, enabling us to support both individual engineering projects and large-volume procurement requirements.

Specialized Tridimensional Core Technology

In addition to conventional laminated core transformers, GaoJing has extensive R&D and manufacturing capabilities in tridimensional toroidal core technology.

Customers can select between:

● Laminated silicon steel cores
● Tridimensional silicon steel toroidal cores
● Tridimensional amorphous alloy cores

This allows transformer selection to be optimized according to project cost, efficiency, noise and energy-saving targets.

Controlled and Traceable Production

Dedicated winding equipment is used during transformer coil manufacturing, while the MES production management system records and tracks production data.

Digital production management helps maintain consistency between transformer units and improves traceability throughout manufacturing.

Factory Electrical Testing

Each transformer undergoes electrical testing after production and assembly to verify its safety and operating reliability before shipment.

Inspection reports and technical documentation can also be supplied according to project requirements.

Custom Dry Type Transformer Solutions

As a dry type transformer manufacturer, GaoJing can discuss and adjust key transformer specifications according to customer requirements, including:

● Rated capacity
● Voltage level
● Core material
● Core structure
● Copper or aluminum winding
● Loss requirements
● Cooling method
● Protection level
● Installation requirements

Our engineering team can assist from requirement confirmation and transformer design through manufacturing, factory inspection and technical delivery.

FAQ About Dry Type Transformers

What types of dry type transformers does GaoJing manufacture?

GaoJing manufactures three main dry-type transformer series: SCB silicon steel laminated core transformers, SCB-RL silicon steel tridimensional toroidal core transformers, and SCBH-RL amorphous alloy tridimensional toroidal core transformers.

Are GaoJing dry type transformers cast resin or VPI transformers?

GaoJing's current dry-type transformer product range is primarily based on cast resin / resin-insulated technology. The windings are encapsulated or vacuum cast with resin rather than using the open-wound VPI structure commonly found in SG or SGB type transformers.

What capacities are available?

Our standard customization range covers approximately 50 kVA to 5000 kVA. Transformer capacity can be selected according to actual load and project requirements.

What voltage levels are available?

GaoJing dry type transformers are available for 10 kV, 20 kV and 35 kV voltage classes.

Specific primary and secondary voltage configurations should be confirmed according to the distribution system.

Can I choose between copper and aluminum windings?

Yes. Copper or aluminum winding configurations can be supplied according to transformer design, project budget and technical requirements.

What is the difference between laminated core and tridimensional toroidal core dry type transformers?

A laminated core transformer uses a conventional planar three-phase core structure and is widely used for general power distribution.

A tridimensional toroidal core uses a symmetrical three-phase magnetic circuit, which can help reduce magnetic reluctance, vibration, excitation current and no-load losses while producing more balanced operating characteristics.

Why choose an amorphous alloy dry type transformer?

Amorphous alloy has significantly lower core loss than conventional electrical silicon steel. For transformers that remain energized for long periods, reduced no-load losses can lower long-term energy consumption.

Therefore, amorphous alloy dry-type transformers are particularly suitable for high-efficiency distribution systems and energy-saving projects.

Can dry type transformers be customized for indoor installations?

Yes. Protection level, cooling configuration, winding material, transformer capacity, voltage level and other specifications can be customized according to the installation environment.

Customers can provide information about the transformer room, environmental conditions and electrical system so that an appropriate configuration can be selected.

Contact a Dry Type Transformer Manufacturer

If you are sourcing transformers for an industrial plant, commercial building, hospital, data center, transportation project or renewable energy system, GaoJing can provide custom dry type transformer solutions based on your electrical and installation requirements.

Send us your required capacity, primary voltage, secondary voltage, application, quantity and technical specifications. GaoJing's engineering team will help you select the appropriate SCB, SCB-RL or SCBH-RL dry type transformer for your project.