| Brand | Vziman |
| Model NO. | Three-Phase Dry-Type Distribution Transformer for Substations-33kV to 38.5kV |
| Rated voltage | 33-38kV |
| Rated capacity | 1500kVA |
| Series | SC (B) 10 |
SC(B)10 series 33kV cast resin dry-type distribution transformer is manufactured using advanced vacuum casting technology with customized insulation thickness, offering excellent electrical strength, mechanical robustness, and outstanding energy efficiency.
Designed for direct connection to load centers, it features flame-retardant, damp-proof, dust-proof construction and low noise operation, making it ideal for high-rise buildings, airports, power plants, substations, and other high-fire-risk environments.
The epoxy resin encapsulation provides maintenance-free operation with superior short-circuit withstand and lightning impulse levels. Each unit is designed and tested in accordance with international and national standards for dry-type power transformers.
Superior Electrical Performance & Weather Resistance: The vacuum pressure casting process ensures bubble-free coils with extremely low partial discharge levels. The transformer exhibits high lightning impulse withstand capability and overvoltage tolerance.
High-Reliability Mechanical Structure: Coils are reinforced with fiberglass, providing strong resistance to short-circuit electromagnetic stresses. Even under extreme load fluctuations, the structural integrity and operational stability are maintained.
Low-Loss Energy-Efficient Design: The SC(B)10 series achieves excellent performance in both no-load loss and load loss, effectively reducing operating costs and reactive power losses in power grids.
Extreme Environmental Adaptability: Features C2 class climatic tolerance, and E2 class environmental resistance. It is moisture-proof, dustproof, corrosion-resistant, and capable of long-term stable operation in humid or heavily polluted environments without maintenance.
Acoustic Optimization: Structural damping treatment significantly reduces operational electromagnetic noise, meeting the high acoustic standards of modern buildings.
See the table for main performance parameters of SC (B) 10.
Number of phases: 3-phase.
Frequency: 50Hz.
Insulation endurance class: Class F.
Average temperature rise of winding: <100K.
Magnitude of partial discharge: <5pc.
| Model | Connection symbol | Voltage combination (kV) | No-load loss(W) | Load loss(W) | No-load current(%) | Short circuit impedance(%) | ||
|---|---|---|---|---|---|---|---|---|
| High-voltage(kV) | Tapping range | Low-voltage(kV) | ||||||
| SC(B)10-800 | Dyn11 Yd11 Yyn0 |
33~38.5 | ±5% ±2×2.5% |
3.5、6、6.3、10、10.5、11 | 2200 | 9400 | 1.1 | 6.0 |
| SC(B)10-1000 | 2610 | 10800 | 1.1 | |||||
| SC(B)10-1250 | 3060 | 11900 | 1.0 | |||||
| SC(B)10-1500 | 3600 | 15400 | 1.0 | 7.0 | ||||
| SC(B)10-2000 | 4130 | 18200 | 0.9 | |||||
| SC(B)10-2500 | 4750 | 21800 | 0.9 | |||||
| SC(B)10-3150 | 5880 | 24500 | 0.8 | 8.0 | ||||
| SC(B)10-4000 | 6860 | 29400 | 0.8 | |||||
| SC(B)10-5000 | 8180 | 34960 | 0.7 | |||||
| SC(B)10-6300 | Dyn11 Yd11 YNd11 |
6、6.3、10.5、11 | 9680 | 40800 | 0.7 | 9.0 | ||
| SC(B)10-8000 | 11000 | 46060 | 0.6 | |||||
| SC(B)10-10000 | 12660 | 56500 | 0.6 | |||||
| SC(B)10-12500 | 15400 | 64600 | 0.5 | |||||
| SC(B)10-16000 | 18900 | 76000 | 0.5 | |||||
| SC(B)10-20000 | 22400 | 85500 | 0.4 | 10.0 | ||||
| Voltage classe kV | Rated short-time power frequency withstand voltage kV (effective value) / 1 minute | Rated lightning impulse withstand voltage kV (peak value) | |
|---|---|---|---|
| Full wave | Clipped wave | ||
| 0.4 | 5 | 75 | 85 |
| 10 | 35 | 75 | |
| 20 | 50 | 125 | |
| 35 | 70 | 170 | |
Ambient temperature: −25 °C to +40 °C (24h average ≤ +35 °C)
Altitude: ≤ 1000 m
Relative humidity: ≤ 90% (at +25 °C)
Solar radiation: ≤ 1000 W/m²
Pollution level: Light to heavy
This dry-type distribution transformer is highly safe due to its flame retardant and damp proof properties. Since it uses epoxy resin casting it is non flammable and self extinguishing making it ideal for locations with strict fire protection requirements such as high rise buildings and power plants.
Q:Does the SC B 10 dry type transformer require frequent maintenance？
A:No one of its key features is that it requires no maintenance. The robust process structure and epoxy insulation protect the internal components from dust and moisture ensuring stable and economic operation over a long period without the need for regular servicing.
Q:Where is the SC B 10 epoxy resin cast distribution transformer typically installed？
A:It is widely used in high density areas and critical infrastructure including airports stations wharves and transformer substations. Because it produces low noise and is environmentally safe it can be placed directly at the load center to improve power distribution efficiency.
Q:How does this dry-type distribution transformer handle harsh environmental conditions and electrical stress？
A:The SCB 10 model is designed with high short circuit resistance and excellent lightning impulse levels. Its cast resin structure provides a protective barrier against moisture and dust ensuring reliable performance even in humid or contaminated environments.
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