encapsulated dry type transformer
Extreme energy efficiency: Class 3 energy efficiency, no-load loss is 10%~20% lower than that of SCB12, load loss is lower, and electricity bills are more economical during long-term operation.
Low noise and quiet: Optimized iron core and structure, noise is 2~3dB lower than that of SCB12, more suitable for residential areas and office buildings.
Safe and reliable: Oil-free, epoxy casting, fire and explosion proof; resistance to short circuits, small partial discharge, moisture and pollution resistance, longer service life.
Maintenance-free: Oil-free, no need to change oil, equipped with intelligent temperature control, making installation, operation and maintenance more worry-free.
Product Details of 10kV SCB13 Epoxy Resin Cast Dry-Type Transformer
1. Product Overview
The 10kV SCB13 epoxy resin cast dry-type transformer is a high-end energy-saving power transformer that meets Class 13 energy efficiency standard. It is fully upgraded and optimized on the basis of SCB12, adopting high-purity epoxy resin vacuum casting technology and high-precision foil winding structure. It is oil-free, fireproof, explosion-proof and eco-friendly, with performance indicators comprehensively better than SCB11 and SCB12 series. The product fully complies with national standards including GB/T 1094.1-2013 and GB/T 1094.3-2017.
As a high-end preferred equipment for medium and low-voltage distribution networks, it is widely used in high-end commercial complexes, precision electronics workshops, large data centers, high-end residences and other places with extremely high requirements for energy saving, quiet operation and reliability. It can be directly installed at the building load center and adapt to various complex and harsh operating environments.
2. Model Definition
S: Three-phase transformer for industrial and civil three-phase power distribution, with higher power supply stability than single-phase transformers.
C: Epoxy resin cast insulation, using high heat-resistant, high flame-retardant and low-loss epoxy resin with vacuum casting, reaching high-end insulation performance.
B: Foil winding structure made of high-precision copper foil, featuring excellent conductivity and ultra-low loss; wire winding can be customized for special demands.
13: Performance level code representing Class 13 low-loss standard, with further reduced loss compared with SCB12 and leading energy-saving effect.
Rated voltage: 10kV class, HV 10kV, LV 0.4kV (default); special voltages such as 11kV, 0.69kV can be customized.
3. Core Product Advantages
Ultra-high Energy Saving & Leading Loss Reduction
Designed in accordance with Class 13 low-loss standard. Compared with SCB12, no-load loss is reduced by an extra 10%–20%, and load loss is further optimized. No-load current is controlled within ≤1.8% (for capacity ≥100kVA), with extremely low reactive power loss. It effectively improves power factor, reduces reactive compensation investment, and greatly lowers electricity cost, fully in line with national green, low-carbon and energy-saving policies.
Upgraded Silence & Minimal Interference
Optimized core material and structure, adopting high-permeability and low-loss silicon steel sheet. Operating noise is 2–3 dB(A) lower than SCB12, controlled at 45–55 dB(A), close to indoor ambient noise. It is ideal for noise-sensitive places such as residential areas, high-end office buildings, precision workshops and data centers.
Upgraded Safety & Comprehensive Protection
Oil-free structure with high flame-retardant and high-temperature resistant epoxy resin. It is flame-retardant, self-extinguishing, non-flammable and explosion-proof, eliminating risks of oil leakage, fire and explosion. Partial discharge ≤3pC, with stronger resistance to sudden short circuit and lightning impulse. It can be installed in basements, floor distribution rooms and densely populated areas without extra fire isolation zones.
Eco-friendly & Weather-resistant for Wide Application
No odor, toxic gas, soil or water pollution during operation. Windings feature outstanding moisture-proof, mildew-proof, salt-fog resistance and anti-fouling performance. It can operate stably under 100% relative humidity, coastal salt fog and high-pollution environments. No pre-drying is needed before restart after long-term shutdown.
Stable, Durable & Easy Maintenance
Optimized winding and core structure provide high mechanical strength and slow insulation aging. Service life reaches more than 30 years, 5 years longer than SCB12. Oil-free design realizes maintenance-free operation. Equipped with high-end intelligent temperature controller for over-temperature alarm, tripping, fan auto-control, fault warning. RS485 communication is standard for remote monitoring, data upload and fault pre-alarm.
4. Main Technical Parameters(customizable)
Item
Standard Parameter / Range
Notes
Rated Voltage (HV) | 10kV (±5% / ±2×2.5%) | Tap positions adjustable, special voltage customizable |
Rated Voltage (LV) | 0.4kV (three-phase four-wire) | 0.69kV, 1.14kV available upon request |
Rated Capacity | 30kVA – 2500kVA | 50, 100, 200, 400, 630, 1000, 1600kVA |
Connection Group | Dyn11 (default), Yyn0 | Customizable |
No-load Loss | GB/T 1094.1-2013 Class 13 | 10%–20% lower than SCB12 |
Load Loss (120℃) | GB/T 1094.1-2013 Class 13 | Optimized compared with SCB12 |
No-load Current | ≤1.8% (≥100kVA) | Better than GB standard and SCB12 |
Short-circuit Impedance | 4%, 6% (default) | 3.5%, 5% customizable |
Insulation Class | Class F (155℃), Class H optional | Much better than SCB12 |
Cooling Mode | AN/AF | 125% rated load under AF |
Noise Level | ≤45–55 dB(A) | 2–3 dB(A) lower than SCB12 |
Protection Degree | IP20 (default), IP30/IP40/IP54 | For dusty, humid, oily sites |
Service Life | ≥30 years | 5 years longer than SCB12 |
Temperature Control | High-end intelligent controller | Standard RS485 for remote monitoring |
5. Application Fields
High-end civil buildings: office buildings, star hotels, apartments, commercial complexes, residential quarters
Precision public facilities: hospitals (operating room, ICU), schools, subways, airports, stadiums
Precision industry: electronics, semiconductor, pharmaceutical, food, precision instrument factories
High-end & new energy: large data centers, PV, wind power, energy storage stations
High-end grid projects: urban grid renovation, high-end park power distribution, old system upgrading
6. Operation Notes
Ensure good ventilation and sufficient heat dissipation space during installation; keep away from flammable, explosive materials and precision equipment.
Check insulation resistance, wiring, temperature controller and communication module before commissioning.
Regularly inspect temperature controller, winding cleanliness and grounding to avoid dust and oil accumulation.
Test insulation before restart after long shutdown; no extra drying required.
Operate under rated load; avoid long-term overload; follow temperature controller for short-time overload.
Check communication status regularly; handle abnormalities such as over-temperature in time.
Do not disassemble or modify without permission; maintenance must be performed by qualified personnel.



