What are the 4 types of transformers?
One of the first queries that you will come across on your search for electrical transformers is most probably going to be What are the 4 types of transformers?
Product Range
Cast Resin Transformer
As a high-tech, low-risk manufacturer of resin-cast transformer, we offer professional customization services to importers, EPC contractors, manufacturers, and electrical consultants.
✓ We customize transformers according to capacity, turns ratio, impedance, vector group, winding material, and installation conditions.
✓ We provide clear quotations including required accessories, testing requirements, and order details.
✓ We offer comprehensive technical support, including product catalogs, datasheets, specifications, drawings, and consulting services.
✓ We confirm warranties, export packaging, shipping documents, and after-sales service before placing an order.
✓ We support project scheduling, from drawing approval and manufacturing to testing, factory acceptance testing (FAT), and shipment.
Our Partner
Create the perfect cast-resin transformers for your project.
Choosing the right transformer involves more than just matching capacity (kVA) and rated voltage. Inappropriate specifications regarding impedance, vector groups, enclosure, cooling methods, or terminal arrangement can lead to repeated drawing revisions, installation delays, and unexpected cost overruns.
Cast-resin transformers are designed, manufactured, and tested according to the highest industry standards, including but not limited to those specified in IEC 60076-11, IEEE C57 requirements, and available testing and documentation upon request.
Whether your low-voltage power needs are indoors or outdoors, we specialize in dry-type transformers and can customize them for both step-up and step-down distribution requirements.
Why This Range
Product Highlights
Safe Operation, No Oil Insulation Risk
Cast resin transformers use epoxy resin insulation instead of liquid insulation, making them more suitable for applications with high requirements for fire safety, indoor installation, and environmental protection.
Such as commercial buildings, hospitals, data centers, underground facilities, and industrial plants.
For projects with stringent safety requirements, cast resin transformers help reduce concerns related to oil leaks, oil handling, and fire safety planning.
Suitable for Indoor Installation and Space-Confined Locations
Indoor transformer installation differs significantly from outdoor installation. Indoor installation places stricter requirements on location, space constraints, and power distribution. Many projects necessitate installing transformers close to the load center, requiring careful consideration of factors such as the transformer's clearance, room ventilation, and other aspects to ensure proper installation and heat dissipation.
Our transformers are perfectly suited for indoor substations, electrical rooms, commercial buildings, and industrial facilities.
Reliable Operation Under Diverse Environmental Conditions
Different projects face different operational challenges.
Our transformers are also perfectly suited for more demanding applications, including high-humidity areas, dusty industrial environments, high-altitude areas, tropical climates, and corrosive environments.
Before production, the operational requirements of the resin-cast transformer under conditions such as high humidity, dust, high-altitude derating, and tropical environments should be assessed before customization or purchase.
Reduced Maintenance Needs and Long-Term Reliability
For some projects, unexpected downtime can result in significant operating costs.
Cast resin transformers offer reliable insulation, low losses, temperature monitoring, and require no oil treatment or oil changes, thus helping customers reduce daily maintenance needs.
Designed for Complex Industrial Loads
Modern projects often include specialized loads such as UPS systems, frequency converters, renewable energy converters, and industrial rectifiers.
For these applications, transformer selection should consider harmonic loads, overload capacity, short-circuit withstand capability, and temperature rise.
A well-designed transformer helps ensure reliable operation under complex load conditions.
Selection Guide
Category Specifications
- kVA
- 5-1,000 kVA
- Voltage
- up to 800V
- Standard Features
- Self-cooled (AA)
- Standard Features
- Self-cooled (AA)
Where It Works
Cast Resin Transformer Applications
Applications of Cast Resin Transformers
Cast resin transformers are widely used in industrial, commercial, and infrastructure projects where stable power distribution, safe operation, and meeting specific electrical requirements are critical.
Our cast resin transformers are suitable for a variety of applications, including:
Industrial Plants and Manufacturing Facilities
Provide a stable power supply to factories, production lines, and heavy industrial equipment. Suitable for transformers requiring continuous operation in harsh environments, stable loads, and reliable performance.
For industrial applications, factors such as cast resin transformer dust protection, cast resin transformer room ventilation, and cast resin transformer ambient temperature should be considered to ensure proper cooling, insulation performance, and long-term operation in environments such as mining, steel, cement, and manufacturing facilities.
Data Centers Cast Resin Transformers
Our transformers are perfectly suited for critical power systems, offering high reliability, low maintenance requirements, temperature monitoring, and stable operation, essential for uninterrupted data center operation.
For data center projects, proper cast resin transformer room ventilation, cast resin transformer clearance, and cast resin transformer ambient temperature management are important to maintain heat dissipation, safe installation, and reliable performance.
Hospitals and Medical Institutions
In hospitals and medical institutions, our dry-type transformers provide safe operation, reliable power distribution, and minimal risk of power outages, making them ideal for these scenarios.
Indoor installation requirements such as indoor cast resin transformer design, appropriate cast resin transformer clearance, and effective ventilation are important considerations for medical facilities where safety and continuous power supply are critical.
Commercial Buildings
Suitable for shopping malls, office buildings, hotels, and mixed-use developments requiring compact installations, low maintenance, and reliable power distribution—all achievable with our transformers.
For commercial buildings, transformer selection should consider indoor cast resin transformer installation requirements, available installation space, cast resin transformer room ventilation, and proper clearance for operation and maintenance.
Renewable Energy Projects
Applicable to solar power plants, wind power plants, and energy storage systems, with voltage, load, and environmental requirements customized to your needs.
Renewable energy projects may require special consideration of cast resin transformer altitude derating, cast resin transformer ambient temperature, and environmental conditions to ensure stable operation in different climates and installation locations.
Railway, Metro, and Transportation Infrastructure
Cast resin transformers offer safety and durability that meet the long-term operational requirements of railway stations, metro systems, and other transportation facilities.
For transportation infrastructure projects, engineering teams may need to evaluate cast resin transformer seismic design, installation clearance, ventilation conditions, and protection requirements according to the project environment.
Mining and Heavy Industry
Cast resin transformers are designed for harsh environments such as mining, steel, and cement industries, taking into account factors like dust, vibration, and high loads.
These applications often require cast resin transformer dust protection, cast resin transformer corrosive environment considerations, and customized protection designs to handle challenging operating conditions.
Water Treatment and Utilities
Support the continuous operation of water treatment plants, wastewater treatment plants, and other public infrastructure projects.
Depending on the installation environment, factors such as cast resin transformer high humidity, cast resin transformer corrosive environment, and cast resin transformer room ventilation may need to be evaluated to improve reliability and prevent insulation issues.
Customer Stories
What Buyers Say
"Smooth technical communication was one of the most important reasons we chose this supplier. They helped us confirm the transformer parameters, installation environment, and required documentation before production. Their cast resin transformers fully met our project specifications, and the delivery process was also very smooth."
"The cast resin transformer was custom-made to meet our voltage requirements, installation conditions, and operating environment. We are very grateful for the detailed engineering support you provided before ordering, which helped us avoid many installation problems. Thank you so much, and we will definitely buy from you again if we have any needs in the future!"
“Our new project has specific requirements for electrical parameters and needs to be coordinated with our renewable energy system. This supplier carefully reviewed our needs and quickly provided suitable transformer configurations and complete technical documentation, allowing our project to proceed very smoothly.”
Buyer Questions
Cast Resin Transformer FAQs
Why do transformers generate heat?
Part of the heat comes from the copper windings themselves. Another part arises from hysteresis and eddy current losses in the silicon steel core sheets caused by the alternating magnetic field. These factors lead to a rise in temperature.
What information should I provide when requesting a transformer quotation?
To get suitable recommendations or accurate quotes, provide the following information.
Transformer application (such as industrial, solar, wind farm, data center, substation, or power distribution)
Rated capacity (kVA/MVA)
Primary and secondary voltage
Phase (single phase or three phase)
Frequency (50Hz or 60Hz)
Installation environment (indoor/outdoor, climate conditions, etc.)
Required standards or special requirements
If you already have technical specifications, please send us the transformer datasheet. If you are not sure about the exact requirements, simply tell us your project application and power needs. Our engineering team can help select and customize the suitable transformer solution for your project.
Do you provide customized transformers according to different voltage and application requirements?
Yes, we are professional manufacturer of the transformer with design team. Additionally, we can provide you with a detailed list of accessories during the early stages of your project preparation. Anyway, our design team will escort your customization.
What tests are performed before transformer delivery?
Before delivery, every transformer undergoes strict factory testing to ensure reliable performance and safe operation. All tests are performed according to international standards such as IEC 60076.
The main tests include:Winding resistance test, voltage ratio test, insulation resistance test, no-load loss test, load loss test, and dielectric tests.
If you need to conduct a type test on the transformer, we can arrange for you to contact the relevant laboratory.
Additional tests such as partial discharge test, noise level test, and special performance tests can be provided based on customer requirements.
After completing the tests, we provide test reports and technical documents to verify transformer quality before shipment.
What standards and certifications do your transformers comply with?
Our products can comply with standards including:
IEC 60076 – International standard for power transformers
IEEE / ANSI standards – Commonly required for North American power projects
ISO quality management standards – Ensuring consistent manufacturing and quality control
For different countries and projects, we can provide the required technical documents, test reports, and certification documents according to customer specifications.
OEM & ODM Available
Cannot Find the Exact Product?
Send your standard, dimensions, material, target quantity, and destination for a tailored recommendation.
