SCB12 6.3kV 6.6kV Cast Resin Dry-type Transformer (30kVA-25000kVA)

application Details

SC(B)12 Series 6.3kv 6.6kv Dry Type Power Transformer

High Voltage: 6.3kV / 6.6kV (Customizable for 6kV, 7.2kV, 10kV)
Low Voltage: 0.4kV / 0.69kV
Vector Group: Dyn11 / Yyn0
Cooling: AN (Natural Air) / AF (Forced Air)
Standard: IEC 60076-11, ANSI/IEEE C57.12.01

Primary Voltage: 6.3kV / 6.6kV (Customizable ranges available)
Capacity: Standard: 30-3150kVA | Power Series: Up to 25000kVA
Technology: Thin insulation strip packing (foil winding) & Vacuum pouring.
Safety: Flame-retardant, explosion-proof, and pollution-free.

technical parameter

SC(B)12 6.3kv 6.6kv Dry Type Transformer Product Overview and Features

Overview: Why Choose the SCB12 Series?

The SCB12 Series represents the advanced generation of Epoxy Resin Cast Dry-type Transformers, specifically engineered for 6.3kV and 6.6kV distribution networks.
Manufactured using high-permeability cold-rolled silicon steel and vacuum-cast epoxy resin, this series outperforms the traditional SCB10/SCB11 models with lower no-load losses, reduced noise, and superior mechanical strength. It is the safest choice for high-rise buildings, commercial centers, and industrial environments where fire safety is paramount.

Technical Data

Key Advantages

Safety First: The epoxy resin insulation is flame-retardant, self-extinguishing, and explosion-proof. Safe for installation in high-density population areas.
Climate Resistance: Moisture-proof and dust-proof. Capable of operating in 100% humidity environments without pre-drying.
High Overload Capacity: With our forced air cooling (AF) system, the capacity can be increased by 40-50% for short periods to handle peak load fluctuations.
Low Noise Operation: High-quality silicon steel sheets and precision clamping ensure noise levels are well below international standards.

Engineered for Excellence

1. Maximum Fire Safety & Maintenance-Free
The coil is cast with flame-retardant epoxy resin. It is explosion-proof, pollution-free, and self-extinguishing. Requires no oil maintenance, reducing long-term operational costs (TCO).
2. High Efficiency & Low Noise
Featuring a 45° full-oblique stepping joint core structure, the SCB12 series significantly reduces no-load current and magnetic noise (Noise level ≤ 52dB for small capacity).
3. Superior Environmental Adaptability
The insulation structure is moisture-proof. The transformer can operate normally in 100% humidity environments and can be energized immediately after extended shutdowns without pre-drying.
4. High Overload Capacity (AF Cooling)
Equipped with a cross-flow fan cooling system. Under Forced Air (AF) conditions, the transformer can handle 150% of the rated load for emergency peaks or short-term fluctuations.
5. Intelligent Protection
Integrated with PT100/PT1000 temperature sensors and a digital display monitor to ensure safe winding temperatures at all times.

Manufacturing Excellence

Core: High-quality grain-oriented silicon steel sheets, cut with automatic shearing lines to ensure burr-free edges.
HV Winding: Vacuum cast with reinforced glass fiber and epoxy resin. Partial discharge is negligible (<10pC).
LV Winding: Foil winding structure (Copper or Aluminum foil) is used to balance ampere-turns, effectively reducing axial short-circuit forces.

Applications

Infrastructure: Commercial Centers, Hotels, Stadiums, Schools.
Transport: Airports, Metro Stations, Railway Tunnels.
Industrial: Factories, Laboratories, Underground Substations.
Special Environments: Piers/Docks (Corrosion resistant), Chemical Plants.

FAQ

Q: Can you manufacture 25000kVA transformers?
A: Yes. While the table above shows standard distribution sizes, we are capable of manufacturing power transformers up to 25MVA / 35kV. Please send us your SLD or technical requirements for a custom design.
Q: Are 6.3kV and 6.6kV standard?
A: Yes, we customize the primary voltage to match your local grid (e.g., 6kV, 6.3kV, 6.6kV, 10.5kV, 11kV).
Q: What is the lead time?
A: 15-20 days for standard units (<2500kVA); 30-45 days for large capacity units (>3150kVA).

Ready to Upgrade Your Power System?

Contact our engineering team today for a technical proposal and competitive pricing on SCB12 6.3kV/6.6kV Transformers.
[ Contact Us Now ]
Email: sales@gneesteels.com | WhatsApp: +86 13353635141

Advantages

Why Choose Us?