25 Units of SCB12-630kVA Dry-Type Transformers for a Light Rail System in France
Project Overview
HBTP supplied 25 units of SCB12-630/20 transformers for a modern urban tramway network extension in a French city. The project represents a significant deployment in the light rail / tramway sector, requiring transformers engineered for reliable operation under demanding conditions.
Project Background
French cities are expanding tramway networks as a sustainable urban transport solution. This extension adds 15km of new tramway lines through dense urban areas and tunnels. Transformers are installed in compact street-level substations and tunnel ventilation shafts, requiring low noise and fire safety.
Customer Requirements
630kVA dry-type transformers, 20kV/0.4kV ratio (French distribution standard), ultra-low noise (≤50dB(A)) for urban areas, F1 fire resistance for tunnel installations, compact design for street-level substations, and compliance with French NF standards.
Our Solution
HBTP supplied its SCB12-series transformers, engineered specifically for light rail / tramway applications. The high-quality CRGO silicon steel core with step-lap mitered joints minimizes no-load losses, while copper windings provide enhanced short-circuit withstand capability and long service life.
| Parameter | Specification |
|---|---|
| Model | SCB12-630/20 |
| Capacity per Unit | 630 kVA |
| Voltage Ratio | 20 / 0.4 kV |
| Cooling | ANAF |
| Efficiency | SCB12 |
| Standard | IEC 60076-11 / NF |
| Urban | Low Noise ≤50dB |
| Fire | F1 for Tunnels |
| Compact | Street-Level Substations |
Quality & Testing
Sound level testing confirmed ≤50dB(A) for urban deployment. F1 fire resistance certification was obtained for tunnel installations. All units passed standard IEC 60076-11 tests plus French NF requirements.
Delivery & Installation
The 25 compact units were delivered to multiple street-level substation locations. HBTP provided installation support and noise verification testing at each site after installation.
Project Outcomes
All 25 transformers were successfully energized and are operating at rated capacity. The project was completed on schedule, and the customer has reported excellent performance with no unplanned outages attributed to transformer equipment. HBTP's reliable power distribution solution has contributed to the project's overall success and operational efficiency.
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