20 Units of S11-2500kVA/13.8kV Transformers for an Automotive Manufacturing Plant in Mexico
Project Overview
HBTP supplied 20 units of S11-2500/13.8 transformers for an automotive assembly plant with stamping, welding, and paint shops in Bajio region, Mexico. The project represents a significant deployment in the automotive manufacturing sector, requiring transformers engineered for reliable operation under demanding conditions.
Project Background
Mexico's Bajio region has become a major automotive manufacturing hub, with numerous OEM and tier-1 supplier plants. This assembly plant produces 300,000 vehicles annually, with high-power loads from stamping presses, welding robots, paint shop ovens, and conveyor systems.
Customer Requirements
13.8kV/480V (North American standard) transformers, 2500kVA capacity, design for high inrush currents from stamping presses and welding loads, ONAF cooling for peak loads, compliance with IEEE C57.12 and Mexican NMX standards, and UL listing.
Our Solution
HBTP supplied its S11-series transformers, engineered specifically for automotive manufacturing 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 | S11-2500/13.8 |
| Capacity per Unit | 2500 kVA |
| Voltage Ratio | 13.8 / 0.48 kV |
| Cooling | ONAN/ONAF |
| Efficiency | S11 |
| Standard | IEEE C57.12 / NMX |
| Voltage | US/Mexico Standard |
| Load | Welding Robots + Paint |
| Power Quality | Industrial Grade |
Quality & Testing
All units were UL listed and passed IEEE C57.12 standard tests. Inrush current withstand testing verified capability for stamping press loads. Harmonic analysis confirmed performance with non-linear welding equipment.
Delivery & Installation
The 20 units were delivered to the plant in phased shipments to match construction milestones. HBTP provided technical support for coordination with the plant's automation and power quality systems.
Project Outcomes
All 20 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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