Concret High Low Voltage Distribution Substation – "PAC 4UF"

High / Low Voltage Concrete Substation PAC 4UF

Building on our expertise in street cabinets, datacenters, and charging stations for electric vehicles, we have expanded our expertise into the High / Low Voltage transformer substation market. We offer factory pre-equipped units that comply with all current standards and client specifications. We are also Enedis-certified for the private market (C13100, C13200) and public distribution networks.

Our range covers all your requirements, from the PAC4UF to 9-meter substations, for:

  • The public grid,
  • Industrial and commercial facilities (industry, healthcare, sports venues, etc.),
  • Electric mobility (charging stations for light vehicles, buses, and HGVs),
  • Energy production (solar, wind, solar carports, etc.).

By choosing Grolleau, your benefits are:

  • Custom solutions tailored to your specific projects,
  • Manufacturing and wiring in Saint-Astier (Dordogne, France),
  • Full support through to commissioning,
  • Fast quoting for HV equipment (switchgear and transformers).

Our "PAC 4UF" High / Low Voltage Distribution Substation

Above-ground prefabricated (concrete) substation with internal operating aisle

Prefabricated High / Low Voltage substations are equipped from the outset with components that meet both technical and environmental requirements. They enhance grid quality and availability while offering ease of installation and on-site adaptation.

Every prefabricated substation installed on the public distribution grid is subject to formal authorization via a declaration of “compliancy for operation”, in accordance with current standards and specifications.

This “compliancy” certification, issued to the substation manufacturer, applies to the enclosure as well as all internal equipment. Prefabricated substations are designed for connection to underground networks (both High and Low Voltage).

Conception aluminium

Concrete

Design

Enedis-approved

with formal authorization for use

icône fabrication français - Grolleau

Made in

France

Standard colors

RAL 1015 or 6003

Production facility In partnership with SOTUBEMA, based in Saint-Astier

Our concrete enclosures are manufactured and fitted out directly at the facility of our partner, SOTUBEMA (Chapsol Group), in Saint-Astier (Dordogne). This production site represent around sqm 4000.

We are fully committed to improve the environmental performance of our manufacturing operations. Following an initial environmental audit, we are working toward a Carbon Footprint assessment to reduce greenhouse gas emissions. The implementation of the “Label Béton Vert®” (Green Concrete Label) further validates this environmental initiative aimed at minimizing our ecological impact.

Grolleau’s team, composed of specialized technicians, based at the Saint-Astier site, fits out the substations in a dedicated area as soon as they are removed from the molds. Each unit is unique in terms of its internal components and color scheme, tailored to meet our clients’ specific requirements.

Find out more

POSTE BETON "PAC 4UF"

"PAC 4UF" Concrete substation :

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Enedis-approved with formal authorization for use
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Dimensions: L 3655 x W 2200 x H 3200 mm
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Technical void height: 720 mm
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Standard colors: RAL 1015 or 6003 (other RAL colors available on request)
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Technical void with removable or knock-out cable entries
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Oil containment bund integrated into the substation's technical void
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Full-surface concrete slab
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Floor cut-outs for switchgear, LV boards, transformers, and miscellaneous equipment
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1 Manhole access with removable cover
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1 Single access door with low-level ventilation
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1 Transformer access door with high and low-level ventilation
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4 Ventilation grilles

Unloading & site requirements :

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Unloading via mobile crane: Lifting beam mandatory
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Reach : 7 meters from crane axis to substation center point
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Note : An additional fee will apply if the required reach exceeds 7 meters
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Responsibility of the customer : *Excavation and earthworks
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Substation earthing/grounding
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Site access arrangements for mobile crane and semi-trailer
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Road permits or other local authorizations

Electrical equipment :

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Transformer
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Swittchboard / LV panel
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Fuses
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MV connection set
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LV connection set
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To be defined (brands and models)

Door hardware & locking :

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1 Enedis-approved emergency exit bar (panic bar) for access door (EN179)
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1 Thirard cylinder lock (matching the delivery department requirements)
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1 Transformer door latch for internal opening

Safety accessory kit including :

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Safety posters: PR10 and "First Aid for Electric Shock" (Internal & External)
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Insulating stool
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Rescue hook/pole
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Voltage Detector (VAT) with capacitive pole
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Insulating gloves and glove box
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2 kg Fire extinguisher

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