three phase dry type transformer
1.Energy-saving and low consumption: Class 3 energy efficiency, lower loss ratio than SCB11, more energy-saving in the long term.
2.Safety and fire prevention: Oil-free, epoxy casting, flame-retardant and explosion-proof, can be installed indoors/basements.
3.Stable and reliable: Resistance to short circuits, small partial discharge, moisture-proof and pollution-resistant, long service life.
4.Low noise and easy maintenance: Low noise, oil-free maintenance, equipped with intelligent temperature control.
Product Details of 10kV SCB12 Epoxy Resin Cast Dry-Type Transformer
1. Product Overview
The 10kV SCB12 epoxy resin cast dry-type transformer is an upgraded energy-saving power transformer that meets the national Class 12 energy efficiency standard. It is optimized on the basis of SCB11, adopting high-quality epoxy resin vacuum casting technology and foil winding structure. It features oil-free, fireproof, explosion-proof and eco-friendly performance, which is comprehensively better than previous models. The product fully complies with national standards including GB/T 1094.1-2013 and GB/T 1094.3-2017.
As a preferred equipment for medium and low-voltage distribution network upgrading, it is widely used in urban grid renovation, high-end commercial buildings, precision industrial parks, large public facilities and other places with higher requirements for energy saving, safety and reliability. It can be directly installed at the building load center and adapt to various complex operating environments.
2. Model Definition
The meaning of SCB12-10kV series model is clear for quick identification of product specification and performance:
S: Three-phase transformer, suitable for industrial and civil three-phase power distribution, different from single-phase transformer.
C: Epoxy resin cast insulation, adopting high heat-resistant and flame-retardant epoxy resin with better insulation performance.
B: Foil winding structure with excellent conductivity and lower loss; copper wire winding can be customized as required.
12: Performance level code representing Class 12 low-loss standard, with further reduced loss and better energy-saving effect than SCB11.
Rated voltage: 10kV class, high voltage 10kV, low voltage 0.4kV (default); special voltage can be customized according to grid requirements.
![three phase dry type transformer]( "three phase dry type transformer")
3. Core Product Advantages
Upgraded Energy Saving & More Significant Loss Reduction
Designed in accordance with Class 12 low-loss standard. Compared with SCB11, no-load loss is reduced by about 15%–20%, and load loss is further optimized, bringing much higher power-saving effect in long-term operation. With smaller no-load current and lower reactive power loss, it can effectively improve power factor and reduce reactive compensation investment, greatly lowering users’ electricity cost and meeting green energy-saving development requirements.
Upgraded Safety & Wider Application
Oil-free structure combined with high flame-retardant epoxy resin casting features flame-retardant, self-extinguishing, non-flammable and explosion-proof properties, completely eliminating hidden dangers such as oil leakage, fire and explosion, and complying with higher fire safety codes. It can be directly installed in basements, floor distribution rooms, densely populated areas without extra fire isolation zone, saving installation space and meeting safety requirements of high-end buildings and precision places.
Eco-Friendly & Moisture-Proof for More Complex Environments
No odor or toxic gas emission during operation, no soil or water pollution, complying with green environmental protection standards. Windings cured by vacuum casting have better moisture resistance, mildew resistance, salt spray resistance and dirt resistance than SCB11. It can operate normally under 100% relative humidity and be put into operation again without pre-drying, suitable for humid southern areas, coastal salt spray, high pollution and other harsh climates and industrial environments.
Stable Performance & Longer Service Life
Optimized winding structure and magnetic circuit design provide higher mechanical strength and stronger resistance to sudden short circuit and lightning impulse. Partial discharge is extremely low (≤5pC) with more stable insulation, effectively delaying insulation aging. Under normal operation and regular inspection, service life can reach more than 25 years, reducing equipment replacement cost and maintenance workload.
Low Noise & Convenient Operation & Maintenance
Further optimized magnetic circuit and structure reduce noise by 3–5 dB(A) compared with SCB11. Noise of conventional capacity is controlled at 47–57 dB(A), fully meeting noise standards of residential areas, office areas and precision workshops, with minimal impact on the surrounding environment. Compact structure, small size and light weight ensure easy installation. It adopts maintenance-free or low-maintenance design, equipped with upgraded intelligent temperature controller for over-temperature alarm, tripping and fan automatic control. It supports RS485 remote communication for remote monitoring and O&M management.
4. Main Technical Parameters（customizable）
| Item | Standard Parameter / Range | Notes |
Rated Voltage (HV) | 10kV (±5% / ±2×2.5%) | Tap positions adjustable according to actual grid |
Rated Voltage (LV) | 0.4kV (three-phase four-wire) | Suitable for conventional low-voltage distribution; special voltage customizable |
Rated Capacity | 30kVA – 2500kVA | Common: 50, 100, 200, 400, 630, 1000kVA |
Connection Group | Dyn11 (default), Yyn0 | Customizable as required |
No-load Loss | Complies with GB/T 1094.1-2013 Class 12 | 15%–20% lower than SCB11; e.g. 100kVA≈145W, 400kVA≈395W |
Load Loss (120℃) | Complies with GB/T 1094.1-2013 Class 12 | Optimized vs SCB11; e.g. 100kVA≈980W, 400kVA≈3400W |
No-load Current | ≤2.0% (≥100kVA) | Better than national standard and SCB11 |
Short-circuit Impedance | 4%, 6% (default) | Customizable according to short-circuit current requirement |
Insulation Class | Class F (max 155℃), Class H optional | Better heat resistance and anti-aging than SCB11 |
Cooling Mode | AN (Natural Air Cooling) / AF (Forced Air Cooling) | 120%–125% rated load under AF |
Noise Level | ≤47–57 dB(A) | 3–5 dB(A) lower than SCB11 |
Protection Degree | IP20 (default), IP30/IP40 (customizable) | For dusty, humid industrial sites |
Service Life | ≥25 years | 5 years longer than SCB11 |
Temperature Control | Upgraded intelligent controller | Standard with RS485 remote communication |
5. Application Fields
As an upgraded version of SCB11, it is suitable for scenarios with higher requirements for energy saving, stability and safety:
High-end civil buildings: high-grade office buildings, star-rated hotels, luxury apartments, large commercial complexes;
Precision public facilities: hospitals (operating rooms, ICU), schools, subways, airports, large stadiums;
Precision industry: electronics factories, pharmaceutical plants, food processing, precision instrument manufacturing;
Special & new energy fields: data centers, PV power stations, wind farms, humid, salt-spray and high-pollution environments;
Grid upgrading projects: urban grid renovation, residential community distribution upgrading, energy-saving distribution projects.
6. Operation Notes
Ensure good ventilation and enough heat dissipation space during installation; keep away from flammable, explosive materials and precision equipment.
Check insulation resistance, correct wiring and temperature controller settings before operation.
Regularly inspect the temperature controller and clean winding surface to avoid dust accumulation.
Check insulation performance before putting into operation again after long-term shutdown; no extra drying needed.
Operate under rated load to avoid overheating; follow temperature controller prompts for short-time overload.
Regularly check communication status of remote monitoring module to ensure real-time data upload and timely fault detection.
