Cast Resin & VPI Dry Type Transformers Up to 2500 kVA
KROS Electric Co., Ltd. designs and manufactures premium-grade Dry Type Transformers engineered specifically for critical applications where environmental safety and fire prevention are paramount. By eliminating liquid dielectrics, our Cast Resin (CRT) and Vacuum Pressure Impregnated (VPI) dry-type units completely remove the risks of oil leakage, toxic emissions, and explosion hazards.
With over 35 years of engineering authority, our transformers strictly adhere to international IEC 60076-11 standards and ISO quality benchmarks. They provide maximum thermal endurance, superior short-circuit resistance, and high impulse strength, making them the preferred choice for EPC contractors, global industrial buyers, and commercial infrastructure projects.
- Zero oil content — complete elimination of fire risks and environmental contamination
- Custom protective enclosures up to IP54 for dust, humidity, and outdoor protection
- Class F or Class H insulation options capable of withstanding extreme thermal loads
- High mechanical short-circuit strength engineered for demanding heavy-duty operations
- Ideal for indoor installations, sub-surface substations, basements, and high-density towers
- Minimal maintenance requirements yielding low life-cycle operational costs
Why Choose KROS Electric Dry Type Transformers
Designed with advanced thermal monitoring, low partial discharge, and flame-retardant materials for reliable power distribution.
Fire Retardant & Safe
Self-extinguishing cast resin design ensures maximum safety in public buildings, hospitals, airports, and high-rise commercial structures.
Environmentally Friendly
100% oil-free design eliminates ground contamination risk and toxic gas discharge, supporting green energy building standards.
Moisture & Dust Resistant
Protected by specialized resin encapsulation or VPI treatment, preventing moisture absorption even in high-humidity or tropical climates.
High Overload Capacity
Designed with forced air cooling (AF) options to handle peak surge loads up to 150% rating without compromising life expectancy.
Smart PT100 Monitoring
Integrated temperature sensors monitor winding heat in real-time, interfacing seamlessly with SCADA and industrial automation control.
Low Life-Cycle Cost
No oil testing, filtration, or seal replacements required. Simple periodic inspection keeps your system operational for decades.
Standard Product Specifications
KROS Electric Co., Ltd. provides customized technical parameters according to project requirements and global utility grid standards.
| Technical Parameter | Standard Range / Specification |
|---|---|
| Power Rating Capacity | 100 kVA up to 2500 kVA (Custom designs available up to 5 MVA) |
| Voltage Class | 11 kV, 22 kV, 33 kV (HV side) / 415V, 690V (LV side) |
| Technology Type | Cast Resin Transformer (CRT) / Vacuum Pressure Impregnated (VPI) |
| Insulation Thermal Class | Class F (155°C) or Class H (180°C) |
| Cooling System | AN (Air Natural) / AF (Air Forced Cooling Fans) |
| Frequency & Phase | 50 Hz / 60 Hz | 3-Phase |
| Enclosure Protection Index | IP00 (Bare unit), IP21, IP23, IP33, up to IP54 (Sheet steel / Stainless steel) |
| International Standards | IEC 60076-11, IS 11171, IEEE C57.12.91, ISO 9001:2015 |
| Climate & Fire Classification | Environmental E2 | Climatic C2 | Fire Behavior F1 |
Built for High-Reliability Environments
KROS Electric Dry Type Transformers are globally deployed across critical infrastructure sectors.
High-Rise Commercial
Office towers, shopping centers, and luxury residential complexes requiring strict indoor fire codes.
Hospitals & Labs
Cleanroom and healthcare facilities requiring silent, pollution-free, continuous electrical supply.
Data Centers
Mission-critical IT facilities demanding high surge tolerance and low partial discharge levels.
Subways & Airports
Underground transit stations, tunnels, and marine docks where fire escape and zero smoke are vital.
Need Custom Technical Specifications or Factory Direct Quotation?
KROS Electric Co., Ltd. provides expert engineering guidance, factory acceptance testing (FAT), and international export documentation for contractors and importers worldwide. Connect with our engineering specialists today.
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