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Individually customisable DENTRA building station

Our Dentra transformer station impresses with its customisable dimensions and design, and is fully compliant with current standards. Dentra can be operated from the inside.

Prefabricated DENTRA transformer station compliant with SN EN 62271-202

The DENTRA building station from Cellpack can be manufactured in 12 pre-defined sizes based on our standard models. Or, if you prefer, fully customised designs are also available. Since the disassembly and routine testing are conducted at the Villmergen plant, the time required for on-site installation is reduced to less than one day.

The designs and configurations comply with the rules and regulations commonly used in the industry. All requirements comply with the type test standard SN EN 62271-202 for prefabricated transformer stations.

DENTRA can be operated from the inside!

DENTRA building station

The DENTRA consists of a sump area in the foundation and the above-ground structure. However, the unit can also be designed as a monolithic structure (made of a single piece). The 12 pre-defined standard DENTRA models are available in different sizes and meet most of our customers’ needs. At the same time, the individual layouts and sizes offer the right solution for virtually any scenario. The stations are fully fitted in our factory, individually tested, transported by us to the construction site, and installed the same day.

The DENTRA station model fully complies with the requirements of the Ordinance on Heavy Current Installations and relevant engineering standards, namely SN EN 62271-202 for prefabricated stations utilising high voltage and/or low voltage.

Multiple surface and façade variants are available for all station types from Cellpack. The standard model features formwork-smooth exposed concrete.

Product features

free-standing (standard), slope installation, installation on in-situ concrete, other options

Operating temperature
outdoors -40 °C to 35 °C / indoors -5 °C to 45 °C

Type testing
SN EN 62271-202 incl. Internal Arc Classification IAC AB 20 kA (1 s) with common MV switchgear types

Standard façade surface
Exposed concrete grey, colourless impregnation

Optional façade surfaces
Anti-graffiti protection, coated, sandblasted, exposed aggregate concrete, abrasion, chippings, various coverings

Concrete quality
• Reinforced concrete, C30/37, XC4, XD3, XF1 compliant with SN EN 206-1
• Fire resistance class: REI 60 (standard), on request REI 90 compliant with SN EN 13501-2
• proven oil tightness compliant with VSE 2.19 d for all sump widths based on the applicable standard model

Snow load
as standard, up to 1,500 m above sea level compliant with SIA 261

Interior paint
entire interior painted with white water-based dispersion

Operating, transformer, and service door
Aluminium, colourless anodised or painted, with ventilation louvers

False floor
Consisting of an aluminium frame to which pressure-proof, phenolic resin-coated plywood panels are bolted. The surface of these panels is moisture resistant

Oil collecting sump
as an option, this sump may be made of GFRP, consist of a steel tub, or an oil-tight collecting area integrated into the foundation; optional additional oil-tight coating for protection zone S3 compliant with VSE 2.19 d is available

Lifting equipment
four lifting points recessed in the roof

Cable entries
Entry system, quantity, size and position according to customer specifications

Construction power entry
Ø 100 mm, with aluminium cover (position according to customer specifications)

Earthing system
consisting of an all-round main earth line made of Cu Ø 8 or Ø 10 mm and earthing busbar

Earth cable feedthroughs
two feedthroughs penetrate the diagonally opposite walls of the cable duct and are connected to the concrete reinforcement bars

Station accessories
wide range of options and equipment available