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Custom Solutions

Range Custom

HV/LV transformer substations fully adapted to your industrial, architectural and technical constraints. From 4 to 10 metres according to your needs. Each solution remains fully equipped and certified.

PREFA FRANCE custom HV/LV transformer substation

From 4 to 10 metres according to your constraints

The BÉTONBLOK Custom range is designed for projects that go beyond the standard framework: high power requirements, footprint constraints, specific architectural integration, particular industrial demands or atypical connections.

Each custom project begins with an in-depth technical study conducted by our engineers. We define the optimal configuration with you: dimensions, transformer power, number of cells, access and safety.

Fundamental principle: as with the Standard range, each custom substation is delivered fully equipped. No bare concrete. No equipment to complete on site.

"A unique solution, designed for your project. Delivered complete, unconditionally."

PREFA FRANCE team on site

Our Approach custom

Four dedicated steps to ensure your substation meets exactly your technical and operational requirements.

Project Analysis

Analysis of your constraints: site, required power, access, local regulations, landscape integration. Full diagnostic before any proposal.

Dedicated Technical Study

Our engineers develop the dimensional plans, equipment list and technical specifications. Validated with you before launch.

Custom Manufacturing

Concrete casting and equipment integration in the factory. Quality control at every stage. Electrical tests before dispatch.

Assisted Commissioning

Coordinated delivery, crane installation, connection, load testing. Support through to final validation and handover of documentation.

Why choose the Custom range

Adapted Power

Variable power transformers according to your kVA requirements. HV cells configured to your distribution scheme.

Flexible Dimensions

Length from 4 to 10 metres. Width and height adaptable according to footprint and clearance constraints on your site.

Architectural Integration

Renders, cladding, custom colours. The BÉTONBLOK substation integrates into its environment without compromising technical requirements.

Maintained Certifications

Even in a custom configuration, each substation receives CONSUEL certification and complies with NF C 13-100 and NF C 13-200.

Electrical Configuration

Number of HV cells, type of incomers, DGPT2 or Buchholz protection, metering: everything is configurable according to your scheme.

Turnkey Delivery

Fully equipped, tested, documented. A single point of contact from study to commissioning.

An industrial or special project?

Our engineering team analyses your constraints and proposes a tailored solution within 48 hours.