What is 1000kVA Cast Resin Dry Type Transformer? Basic Definition & Working Principle
A 1000kVA Cast Resin Dry Type Transformer is a type of Dry-type Transformer that uses epoxy resin to encapsulate its windings instead of insulating oil. With a rated capacity of 1000 kVA, it is designed to efficiently transfer electrical energy between voltage levels in medium- and low-voltage distribution systems.
As a professional manufacturer, GNEE produces high-performance cast resin dry type transformer manufacturers solutions, offering reliable Three-Phase Cast Resin Transformer and Dry distribution transformer products for global industrial and commercial applications.
Unlike traditional oil-filled transformers, this cast resin type transformer is air-cooled and environmentally friendly, making it ideal as an Indoor Three-Phase Transformer in places where fire safety and low maintenance are critical.
Core Structure of 1000kVA Cast Resin Dry Type Transformer
The structure of a 1000kVA Cast Resin Dry Type Transformer mainly includes:
Magnetic Core (Dry Core Transformer)
The core is made of high-quality silicon steel laminations, which minimize energy loss and improve the efficiency of the Low Loss Dry-type Transformer.
Cast Resin Windings
The high- and low-voltage windings are encapsulated in epoxy resin, forming a cast coil dry type transformer. This design ensures excellent insulation, moisture resistance, and mechanical strength.
Cooling System
Unlike oil transformers, this Dry-type Transformer uses natural air cooling (AN) or forced air cooling (AF), ensuring stable operation without liquid insulation.
Protective Enclosure
Depending on the application, the Indoor Three-Phase Transformer can be equipped with IP-rated enclosures for dust and moisture protection.
Transformer internal structure – core and cast resin coils
Working Principle of 1000kVA Cast Resin Dry Type Transformer
The 1000kVA cast resin dry type transformer operates based on Faraday's Law of Electromagnetic Induction, enabling voltage conversion and electrical energy transfer without direct electrical connection between circuits. Its core components include a high‑permeability silicon steel core, primary/secondary windings, and epoxy resin cast insulation under vacuum pressure.
When alternating current is applied to the primary winding, it generates a closed alternating magnetic flux in the laminated core. This changing flux cuts the secondary winding, inducing proportional electromotive force (voltage) following the turns ratio U1/U2=N1/N2. Under load, the secondary winding outputs current to deliver power, completing energy conversion: electric energy → magnetic energy → electric energy.
Unlike oil‑immersed transformers, its windings are fully encapsulated with flame‑retardant epoxy resin, providing high insulation, moisture resistance, and short‑circuit strength. Heat is dissipated by natural or forced air convection through cooling fins, making it safe, non‑flammable, maintenance‑free, and ideal for indoor, high‑rise, fire‑sensitive, and humid distribution scenarios.
Working principle diagram – electromagnetic induction illustration
Key Features of 1000kVA Cast Resin Dry Type Transformer
High Safety and Fire Resistance
The Dry-type Transformer is non-flammable, making it ideal for sensitive environments such as hospitals and commercial buildings.
Low Maintenance Requirements
The dry cast resin transformers require minimal maintenance since there is no oil to monitor or replace.
Environmental Protection
The cast resin distribution transformer produces no harmful emissions and avoids oil contamination risks.
Compact and Flexible Installation
This Indoor Three-Phase Transformer is compact and can be installed close to load centers, reducing power loss.
Application scene – transformer installed in commercial building
Typical Applications of 1000kVA Cast Resin Dry Type Transformer
The 1000kVA Cast Resin Dry Type Transformer is widely used in:
Commercial Power Distribution
As a Dry distribution transformer, it ensures stable electricity in office buildings and shopping centers.
Industrial Power Systems
Factories use cast resin type transformer units for safe and reliable operation.
Renewable Energy Systems
Used as a Cast Resin Power Transformer in solar and wind energy projects.
Public Infrastructure
Hospitals, airports, and metro systems rely on Three-Phase Cast Resin Transformer solutions for safety and efficiency.
Why Choose GNEE as Your Cast Resin Dry Type Transformer Manufacturer?
Professional Manufacturing Experience
GNEE is a trusted cast resin dry type transformer manufacturers with strong production capabilities and advanced technology.
Strict Quality Control
Every Low Loss Dry-type Transformer undergoes comprehensive testing before delivery.
Custom Solutions Available
We offer tailored cast resin distribution transformer designs to meet specific project requirements.
Global Supply and Support
Our Dry-type Transformer products are exported worldwide with reliable after-sales service.
Conclusion: Reliable 1000kVA Cast Resin Dry Type Transformer for Your Project
The 1000kVA Cast Resin Dry Type Transformer combines safety, efficiency, and environmental protection, making it an ideal choice for modern power distribution systems. Understanding its definition and working principle helps you select the right Three-Phase Dry-type Transformer for your needs.
👉 Contact GNEE today to get expert advice and a competitive quote for your 1000kVA Cast Resin Dry Type Transformer-optimize your power system with a reliable and efficient solution!
Technical Parameters of 1000 KVA 3 Phase Dry Type Transformer
Below is a typical specification table for a 1000 KVA 3 Phase Dry Type Transformer:
| Parameter | Specification |
|---|---|
| Rated Capacity | 1000 KVA |
| Phase | Three Phase |
| Frequency | 50Hz / 60Hz |
| Voltage (HV/LV) | 10kV / 0.4kV (customizable) |
| Insulation Class | F / H |
| Cooling Method | AN / AF |
| Connection Group | Dyn11 / Yyn0 |
| Impedance Voltage | 4% – 6% |
| Protection Class | IP00 / IP20 / IP23 |
| Temperature Rise | ≤100K |
| Noise Level | ≤60 dB |
What is a 1000 kVA transformer and where is it used?
A 1000 kVA transformer is a medium-capacity power transformer used to step up or step down voltage in industrial and commercial power systems. It is widely applied in factories, commercial buildings, substations, renewable energy projects, and infrastructure developments where stable power distribution is required.
What is the difference between a 1000 kVA dry type transformer and a 1000 kVA oil immersed transformer?
A 1000 kVA dry type transformer uses air for cooling and is ideal for indoor installations with high safety requirements. A 1000 kVA oil immersed transformer (or 1000 kVA oil filled transformer) uses insulating oil, offering better cooling, higher efficiency, and stronger overload capacity, making it suitable for outdoor and heavy-duty applications.
Which is better: 1000 kVA dry type transformer or 1000 kVA oil filled transformer?
It depends on your application. A 1000 kVA dry type transformer is better for indoor use, such as hospitals or commercial buildings, due to its fire safety and low maintenance. A 1000 kVA oil filled transformer is better for industrial or outdoor environments because of its durability, efficiency, and lower initial cost.
What is a 1000kVA cast resin dry type transformer?
A 1000kVA cast resin dry type transformer is a type of dry transformer where the windings are encapsulated in epoxy resin. This design improves insulation, reduces fire risk, and enhances performance in humid or dusty environments, making it ideal for critical indoor installations.
What is the typical cost of a 1000kVA oil immersed transformer?
The 1000kVA oil immersed transformer cost varies depending on specifications such as voltage, materials (copper or aluminum), efficiency level, and customization. Generally, oil immersed transformers have a lower upfront cost compared to dry type transformers, but total lifecycle cost should also consider energy losses and maintenance.