dry type pad mounted transformer
1.Energy-saving and low consumption: Lower loss than traditional models, saving electricity in the long term and with low operating costs.
2.Safe and environmentally friendly: Oil-free, flame-retardant, explosion-proof, and can be installed in densely populated places such as indoors and basements.
3.Stable and reliable: Moisture-proof, short-circuit resistant, low noise, and long service life.
4.Intelligent and convenient: Equipped with temperature control protection, simple maintenance, and wide application.
Product Details of 10kV SCB11 Epoxy Resin Cast Dry-Type Transformer
1. Product Overview
The 10kV SCB11 epoxy resin cast dry-type transformer is an energy-saving power transformer that meets the national Class 11 energy efficiency standard. It adopts epoxy resin vacuum casting technology and foil winding structure, with a completely oil-free design. It features fire resistance, explosion-proof, environmental protection and stable & reliable performance, fully complying with national standards including GB/T 1094.1-2013 and GB/T 1094.3-2017.
As core equipment in medium and low-voltage distribution networks, it is widely used in urban power grid renovation, commercial buildings, industrial parks, public facilities and other places with high requirements for safety, energy saving and environmental protection. It can be directly installed at the building load center and adapt to various complex operating environments.
2. Model Definition
The meaning of SCB11-10kV series model is as follows:
S: Three-phase transformer, different from single-phase transformer, suitable for industrial and civil three-phase power distribution.
C: Epoxy resin cast insulation, with excellent insulation performance by high-quality epoxy resin vacuum casting.
B: Foil winding structure, with good conductivity and low loss; copper wire winding can be customized for some models.
11: Performance level code, representing Class 11 low-loss standard, with obvious energy-saving effect and better performance than previous models.
Rated voltage: 10kV class, high voltage 10kV, low voltage 0.4kV (default); special voltage can be customized according to grid requirements.
3. Core Product Advantages
High Efficiency & Energy Saving, Low Operating Cost
Designed in accordance with Class 11 low-loss standard, its no-load loss and load loss are better than national standards, bringing remarkable power-saving effect in long-term operation. With small no-load current and low reactive power loss, it can effectively improve power factor and reduce reactive power compensation investment, greatly cutting users’ electricity cost.
Safe & Fireproof for Various Installation Scenarios
Oil-free structure and flame-retardant epoxy resin casting make it flame-retardant and self-extinguishing, completely eliminating hidden dangers such as oil leakage, fire and explosion, meeting fire safety codes. It can be directly installed in basements, floor distribution rooms, densely populated areas without extra fire isolation zone, saving installation space.
Eco-Friendly & Moisture-Proof for Complex Environments
No odor or toxic gas emission during operation, no soil or water pollution. Windings cured by vacuum casting feature strong moisture resistance, mildew resistance, salt spray resistance and dirt resistance, and can operate normally under 100% relative humidity. It can be put into operation again without pre-drying, suitable for humid southern areas and coastal salt-spray environments.
Stable & Reliable with Long Service Life
Integrally cured windings feature high mechanical strength, strong resistance to sudden short circuit and lightning impulse. Partial discharge is extremely low (≤10pC) with stable insulation, effectively avoiding insulation aging. Service life can reach more than 20 years under normal operation and regular inspection, reducing equipment replacement cost.
Low Noise & Easy Maintenance
Optimized magnetic circuit design reduces operating noise to 50–60 dB(A), complying with noise standards for residential and office areas. Compact structure, small size and light weight make installation convenient. It is maintenance-free or low-maintenance, equipped with intelligent temperature controller for over-temperature alarm, tripping and fan control. Some models support RS485 communication for remote monitoring and operation management.
4. Main Technical Parameters（customizable）
Rated Voltage (HV) | 10kV (±5% / ±2×2.5%) | Tap positions adjustable according to actual grid |
Rated Voltage (LV) | 0.4kV (three-phase four-wire) | 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 |
No-load Loss | Complies with GB/T 1094.1-2013 Class 11 | 100kVA≈170W, 400kVA≈470W, 630kVA≈720W |
Load Loss (120℃) | Complies with GB/T 1094.1-2013 Class 11 | 100kVA≈1080W, 400kVA≈3750W, 630kVA≈5800W |
No-load Current | ≤2.5% (for ≥100kVA) | Smaller capacity has slightly higher ratio |
Short-circuit Impedance | 4%, 6% (default) | Customizable |
Insulation Class | Class F (max 155℃) | Excellent heat resistance and anti-aging |
Cooling Mode | AN (Natural Air Cooling) / AF (Forced Air Cooling) | 120%–125% rated load under AF |
Noise Level | ≤50–60 dB(A) | Meets residential & public area standards |
Protection Degree | IP20 (default), IP30 (customizable) | IP30 suitable for dusty industrial sites |
Service Life | ≥20 years | Under normal operation & regular inspection |
Temperature Control | Intelligent controller (alarm, trip, fan control) | Optional RS485 for remote monitoring |
5. Application Fields
With the advantages of safety, energy saving, environmental protection and high reliability, it is especially suitable for places with strict fire protection requirements:
Civil buildings: high-rise residences, shopping malls, hotels, office buildings, apartments
Public facilities: hospitals, schools, stations, subways, airports, stadiums
Industry: workshops, mines, metallurgy, chemical industry, pharmaceuticals
Special fields: data centers, PV power stations, wind farms, humid and salt-spray environments
