SCB12/11kV Epoxy Resin Cast Dry-Type Distribution Transformer

Product Overview

• Low Loss, Energy-Efficient, and Eco-Friendly: 35% more energy-efficient compared to SCB11 transformers.
• Exceeds GB and IEC Standards: Certified by CB, CCC, KEMA, SASO, etc.
• Superior Fire Safety Performance: F1 fire resistance rating.
• High Lightning Impulse Withstand Level: 95kV for 11kV products.
• Comprehensive Temperature Protection System: Capable of 120% rated load operation with forced air cooling.
• Proven Global Reliability: Exported to over 50 countries and regions.
• Wide Applications: Ideal for 11kV urban distribution networks, industrial plants, mining facilities, and civil building power systems.
• Successful Exports: 5,793 units sold to Middle Eastern countries including Kuwait, UAE, Saudi Arabia, Qatar, Iraq, and Oman.
• Compliance Standards: IEC 60076 series, GB1094 series, GB/T6451-2008.
• Enclosure Materials: Options include aluminum alloy, cold-rolled steel, and stainless steel (protection levels IP20, IP23, etc.).

Product Advantages

Leading Technology

• High-voltage winding uses copper strip with flame-retardant vacuum casting.
• Low-voltage winding uses copper foil with thermosetting epoxy pre-impregnated insulation.
• High-quality core with 45° full-step lap joints for reduced losses and noise.

Core

• Made from high-quality cold-rolled grain-oriented silicon steel with mineral oxide insulation.
• Advanced cutting and stacking processes minimize losses, no-load current, and noise.
• Surface coated with F-grade or H-grade core paint to prevent dust, corrosion, and rust.

Low-Voltage Winding

• Constructed with high-quality copper foil.
• Layer insulation using thermosetting epoxy pre-impregnated cloth.
• Excellent insulation withstand performance and radial stress resistance under short-circuit conditions.
• Tin-plated copper busbars for low-voltage winding terminals.
• Winding heated to 140°C for 4 hours for polymerization, ensuring superior resistance to industrial gas corrosion.

High-Voltage Winding

• Wound with insulated copper wire using Hengfengyou’s patented technology.
• Linear voltage gradient from top to bottom for small-capacity products.
• “Strip-wound” technology for larger-capacity products, ensuring low electric fields between adjacent conductors.
• Robust structure for reliable operation and transportation.

High-Quality Materials

• Silicon steel from Baosteel and Wuhan Steel.
• High-quality oxygen-free copper from China.
• Huntsman epoxy resin from Switzerland (with flame-retardant fillers).

Patented Technology

• High-voltage coils are vacuum-cast with flame-retardant fillers, a patented technology by Hengfengyou.
• Self-extinguishing properties when exposed to flames, ensuring excellent flame resistance and adaptability to harsh environments.

Operating Conditions

• Altitude: Below 1,000m.
• Ambient Temperature: -25°C to 40°C.
• Humidity: Below 90% at 25°C.
• Installation: Maximum tilt angle of 5°, no severe vibration, outdoor wind speed below 35m/s.
• Environment: Free from gases, conductive dust, or corrosive substances that may affect insulation.
• Custom solutions available for conditions beyond standard specifications.