PREFAFRANCE
HIGH-VOLTAGE PRECAST SUBSTATIONS
INTEGRATION MAINTENANCE REPAIRS
French excellence in precast – 20-year guarantee
Delivery substations – C13100 substations – C13200 substations – HV substations – Concrete cabins – Technical rooms
Factory-built, our substations comply with normes de construction MT/BT and offer modular dimensions:
- Floor areas from 2 to 30 m²
- Lengths from 1 to 10 m
- Widths from 1.5 to 3 m
They can accommodate:
- Transformers from 50 to 3150 kVA
- MV switchboards (1 to 42 cells)
- Automation systems and control equipment
- LV switchboards and other technical equipment
Every substation is customisable and configurable, according to your specific needs and installation constraints.
Rigorous manufacturing
Compliant with the latest European standards (EU Directive No. 548/2014 – Tier 2), our substations guarantee:
- Robustesse et reliability
- Enhanced safety
- Adaptation to modern energy requirements
🔹 Key advantages for your business
✔️ Maximum reliability – optimal operation up to 40°C
✔️ Extended service life – tank protected by a high-resistance anti-corrosion coating
✔️ Enhanced safety – DGPT2 protection relay (gas, pressure, temperature)
✔️ Ease of installation and operation – roller wheels, lifting rings and practical connections
✔️ International compliance – compliance with the strictest performance and safety standards
✔️ Suited to modern and sustainable projects – renewable energies, industrial sites, local authorities
French excellence in precast
PREFAFRANCE is a French manufacturer that goes far beyond simple manufacturing
We design and deploy global, reliable and durable solutions, perfectly adapted to your technical, regulatory and operational constraints.
Our areas of intervention cover:
- New installations
- Extension projects
- Renovation and modernisation of existing substations
We work in close coordination with ENEDIS and network operators to guarantee compliant and secure projects.
Prefafrance delivers your high-voltage substations turnkey, including:
- HTA switchgear cells
- Transformers
- LVMDB (Low Voltage Main Distribution Board)
- Installation, connection and commissioning
Our projects benefit from a 10-year guarantee, including:
- Full commissioning assistance
- Free annual maintenance for 5 years
PREFAFRANCE – Turnkey solutions
At PREFAFRANCE, we go beyond the transformer:
👉 Prefabricated LVMDB substations designed for performance, safety and durability.
👉 Custom manufacture and installation to meet the constraints of your industrial, tertiary or energy sites.
👉 Lifting, connection and commissioning: full support from the design office through to commissioning.
👉 Optimised integration: HV/MV/LV distribution, protection and control adapted to your needs.
High-voltage precast unit installed on site in just 2 days!
👉 Attractive prices
👉 Short lead times
👉 Proven reliability
👉 20-year guarantee
Model PREFA-L
250kva a 1250 kVa
Model PREFA-XL
1250 A 2500 KVa
Model PREFA-XLL
HTA and LVMDB
MODEL PREFA X
sur mesure
Who we are
For many years, PREFAFRANCE, a committed family business, designs and markets high-voltage precast concrete solutions that are robust and high-performing. Our products are designed to guarantee the durability, safety and efficiency of your electrical infrastructure, whether temporary or permanent installations.
Our solutions
- Supply of HTA precast concrete substations and equipment
- Personalised feasibility and engineering studies
- Full on-site installation and commissioning
- Maintenance & responsive technical support
- Rental of adapted solutions, short or long term
PREFAFRANCE
- High-resistance materials
- Innovation & durability
- After-sales service & national responsiveness
PREFAFRANCE service
High Voltage Repairs
Availability – Responsiveness – Safety
Our teams are supported by an on-call service 24/7, guaranteeing a fast and effective response for:
High Voltage Maintenance
One of the highest levels of expertise in the profession
Prefafrance supports Technical Directors in managing electrical risk, service continuity and the sustainability of installations.
Preventive maintenance
Anticipate failures and guarantee operational continuity.
Corrective maintenance
Intervention after detection or appearance of a fault.
Predictive maintenance
Forecast failures through advanced data analysis.
Regulatory maintenance
Guarantee compliance with standards and legal obligations.
Planned corrective maintenance
Scheduled actions following a diagnosis, before a critical breakdown.
Our installations
In Plaisance-du-Touch (Occitania), PREFAFRANCE technical teams carried out the installation of a 400 kVA prefabricated substation to supply a local commercial zone.er un nouveau lotissement résidentiel.
In Nouvelle-Aquitaine, in Limoges, PREFAFRANCE installed a 630 kVA substation to reinforce the electrical supply to a craft industry zone.
In the Brittany region, in Quimper, PREFAFRANCE installed a 250 kVA prefabricated substation to improve supply continuity to a neighbourhood pavillonnaire.
In Île-de-France, in Saint-Denis, PREFAFRANCE technicians commissioned a 1000 kVA HTA/LV substation for a high-performance tertiary buildingormance énergétique.
Press
Multitechnical High-Voltage Electrical Services: Why Work with an Expert Partner?
In an industrial environment where service continuity is critical, high-voltage electricity allows no room for approximation. Maintenance, troubleshooting, compliance: every intervention requires precision, expertise, and responsiveness. Faced with these challenges,...
Costs and Installation Time for a PREFAFRANCE Prefabricated MV/LV Substation
Installation Costs PREFAFRANCE prefabricated substations offer an optimised solution in terms of cost and installation speed: PREFAFRANCE monobloc concrete substation (1 transformer, approx. 3.28 x 2.38 x 3.045 m) → €6,000 to €10,000 excl. VAT (delivered assembled,...
Contact us
Factory address : 1 Rue Léon Hennebique, 24100 Bergerac
Phone: 05 32 50 00 52
Email: contact@prefafrance.fr
Opening hours: Open 8am – 7pm