2025-07-28
The core difference between SGB transformer and SCB transformer lies in the insulation material, structural design, and performance characteristics: SCB adopts epoxy resin casting insulation and copper foil winding, which is suitable for moisture-proof environments; Contact our company if you need a transformer.
1. Dry-Type Technology:
No Liquid Coolant: Uses ambient air or forced air for cooling. Eliminates risks of leaks, spills, and environmental contamination associated with oil.
Insulation: Windings are encapsulated in epoxy resin or vacuum pressure impregnated (VPI) with special varnishes. SGB is particularly known for its high-quality cast resin technology (epoxy).
2. Fire Safety:
Flame Retardant: Encapsulation materials are self-extinguishing (meeting standards like UL 94 V-0).
No Fire Hazard: Eliminates the fuel source (oil) present in liquid-filled transformers. Critical for indoor applications (buildings, tunnels, mines).
3. Environmental Friendliness:
Non-Toxic: No PCBs or hazardous oils.
Recyclable: Primarily made of copper/aluminum, steel, and recyclable resins.
4. Low Maintenance:
No need for oil testing, filtration, or containment systems.
Reduced inspection requirements compared to oil-filled units.
5. Robust Construction (SGB Specific):
High Mechanical Strength: Cast resin provides excellent protection against moisture, dust, chemicals, and harsh environments.
High Short-Circuit Strength: Designed to withstand significant electrical faults.
Low Partial Discharge (PD): Ensures long-term reliability and insulation integrity.
Low Noise Levels: Optimized designs for reduced operational sound.
6. Efficiency:
Available in high-efficiency designs (meeting or exceeding standards like DOE 2016, EU Tier 2/Tier 3, IEC 60076-20). Reduced energy losses save operational costs.
Cast Resin Transformers (CRT): The flagship product. Windings are completely encapsulated in epoxy resin under vacuum in a mold. Offers the highest level of protection.
Vacuum Pressure Impregnated (VPI) Transformers: Windings are impregnated with resin under vacuum and pressure, then oven-cured. A robust and cost-effective solution.
Enhanced Safety: Ideal for indoor, populated, or sensitive locations (hospitals, schools, high-rises, data centers, mines, offshore platforms).
Environmental Compliance: Meets strict environmental regulations easily. Zero risk of soil/water contamination.
Reduced Installation Costs: No need for fireproof vaults, containment pits, or elaborate drainage systems. Lighter weight can simplify placement.
Lower Lifetime Costs: Minimal maintenance requirements and high efficiency lead to significant savings.
Design Flexibility: Can be designed for various voltages, ratings, and special requirements (e.g., high altitude, seismic zones, tropical climates).
Commercial & Institutional Buildings: Offices, hospitals, universities, shopping malls, airports.
Industrial Plants: Manufacturing facilities, chemical plants, refineries, mines (especially where fire risk is high).
Infrastructure: Tunnels, metro systems, railways, airports, ports.
Renewable Energy: Wind farms and solar PV plants (step-up or auxiliary transformers).
Data Centers: Critical for fire safety and reliability within server halls.
Marine & Offshore: Ships and oil/gas platforms.
Utilities: Distribution networks, especially in urban areas or environmentally sensitive zones.
