Cast Resin Transformers
3Si Eco Power offers Cast Resin Transformers, backed by pioneers in cast resin technology. Our transformers feature both high-voltage (HV) and low-voltage (LV) coils made from foil, providing distinct advantages in performance and reliability.
We manufacture Cast Resin Transformers up to 36 kV and 5 MVA, adhering to Indian Standard IS 2026-11, IEC 60076-11, the Energy Conservation Building Code, and can accommodate any international standards upon specific request.
Cast resin transformers are a type of transformer that uses epoxy resin to insulate and encase the windings, providing several advantages over traditional oil-filled transformers. Here’s an overview of their features, benefits, and applications:








Key Features
- Insulation: The windings are insulated with a resin that is cast directly around them, providing excellent electrical insulation and moisture resistance.
- Cooling: They rely on natural air cooling, which simplifies their design and reduces the need for external cooling systems. Even forced cooling may be provided depending on requirements.
- Compact Design: Typically more compact than oil-filled transformers, making them suitable for installations with space constraints.
- Environmentally Friendly: They do not use oil, reducing the risk of leaks and environmental contamination.
Standards and Compliance
Cast resin transformers often comply with various international and national standards, such as:
- IS 2026 Part 11 (India)
- IEC 60076 Part 11 (International)
- IEEE standards for specific applications.
Applications
- Commercial and Industrial: Used in buildings, manufacturing plants, and substations for power distribution.
- Renewable Energy: Commonly employed in wind energy systems due to their efficiency and reliability.
- Public Infrastructure: Suitable for railways, airports, and hospitals where safety and reliability are critical.
- Heavy Industries: Used in mining, steel, and other heavy industrial applications where robust performance is required.
Advantages
- Safety: Lower risk of fire hazards and environmental pollution due to the absence of flammable insulating oil.
- Durability: Resistant to harsh environmental conditions, including humidity and dust, making them suitable for outdoor and indoor applications.
- Maintenance: Generally require less maintenance compared to oil-filled transformers due to their robust design.
- Low Noise: Operate quietly, which is beneficial in residential or urban settings.