PREFA FRANCE, a recognised French player in the field of prefabricated high-voltage substations (HTA/HT), designs and manufactures complete electrical stations, delivered turnkey. These solutions ensure energy transformation and distribution between the public grid and industrial, commercial or residential installations, guaranteeing reliability, safety and regulatory compliance.
Definition and advantages
A prefabricated high-voltage substation is a complete unit, assembled in the factory, comprising:
- An enclosure (reinforced concrete or metal)
- An HV/LV transformer
- HV/LV switchboards, circuit breakers, disconnectors, surge arresters
- Ventilation, safety and oil containment systems
The main advantages are:
- Rapid and standardised installation
- Reduced costs and commissioning times
- Optimal mechanical and fire protection
- Strict compliance with NF C 13-100, NF C 13-200, NF C 15-100, HN 64-S-41 and IEC 62271-202
Manufacturing process
Factory manufacturing follows a rigorous industrial process: design and engineering according to required power, production of the reinforced concrete or galvanised metal enclosure, internal assembly and wiring, electrical and mechanical tests in the factory, then turnkey delivery.
PREFA FRANCE specificity: monobloc substations in high-performance reinforced concrete, workshop-tested with customisable options, delivered ready to connect.
Typology of prefabricated high-voltage substations
Monobloc reinforced concrete substations
Optimal mechanical and thermal protection, high resistance to impacts, humidity and fire. Used for power ratings from 100 to 2,500 kVA.
Prefabricated metal substations
Lightweight, transportable, easy to install, often chosen for mobile or temporary applications (160–1,600 kVA).
Compact modular substations
Designed for urban environments or confined sites. Their modularity allows personalised layouts.
Standards and compliance
Manufacturing and commissioning of prefabricated substations must comply with NF C 13-100, NF C 13-200, NF C 15-100, HN 64-S-41, IEC 62271-202, and European environmental requirements. PREFA FRANCE applies these frameworks at every stage to guarantee safety and compliance.
Conclusion
The prefabricated high-voltage substation represents a modern, safe and durable solution for electrical distribution. Thanks to its expertise, PREFA FRANCE stands out as a major player in France and Europe, offering robustness, modularity and certified quality.
