Energy Distribution
Holtab is innovative when energy distribution changes
Grid companies are facing challenges as electrification accelerates. For Holtab, this development has led to new collaborations and more innovative solutions.
Compact secondary substations (CSS) for today’s and tomorrow’s electricity grids
Our compact secondary substations (CSS) are designed and optimised for the electricity distribution networks of today and tomorrow. While our standard products often fulfil every need, sometimes unique adaptations are required.
Meet future demands
Our compact secondary substations (CSS) should last at least 40 years and we always expect them to be scalable. We use proven technologies, but also incorporate new ones that meet future demands.
A long-term, turnkey partner
Knowledge, service and cooperation are our guiding principles. We build products based on your challenge and our shared knowledge. Put us to the test.
Personal safety our highest priority
Our compact secondary substations (CSS) are constructed with the highest priority for personal safety, with plenty of space and well proven technology to deliver a safe product.
Our compact secondary substations (CSS)
We build compact secondary substations (CSS) in both sheet steel and concrete and offer both standard stations as well as unique architect-designed buildings. The design, colour choice, surface finish and more can be customised according to your wishes.
Customisable
Solutions customised to requirements.
Plug and Play
Minimises installation time on site.
Personal safety
Designed and tested with a focus on safety for the installer and surroundings.
Digitalisation
Digital solutions for metering, communication and automation.
According to standard
Uppfyller gällande standard
IEC 62271-202.
Ergonomic and easy to work with
Multiple flexible solutions for handling and use.
Product data
Transformer
Oil insulated or
dry insulatedLow-voltage switchgear
HMS
Life cycle category
L50
Load class
K15
Exposure class
XC4/XF3
Medium-voltage
12–24 kV
Materials
Concrete
Snow load zone
4.5
Protection enclosure class
IP23D
Earthing system
Rails
Medium-voltage 12–24 kV • Transformer up to 1250 kVA
- Concrete compact secondary substation (CSS).
- RMU medium-voltage switchgear 12-24 kV.
- Transformer oil insulated/dry insulated up to 1250 kVA.
- Modular low-voltage switchgear HMS up to 2500 A.
- Designed and type tested according to standard IEC 62271-202.
- Arc-proof IAC-AB 20 kA 1s.
- Available in any colour and exterior design option.
- Optional facade finishes – smooth, brushed, stippled and mould-cast wood panel.
Dimensional drawings
Medium-voltage 12-24 kV • Transformer up to 2 x 1250 kVA
- Concrete compact secondary substation (CSS).
- RMU medium-voltage switchgear 12-24 kV.
- Transformer oil insulated/dry insulated up to 2 x 1250 kVA.
- Modular low-voltage switchgear HMS or CMS
- Designed and type tested according to standard IEC 62271-202.
- Arc-proof IAC-AB 20 kA 1s.
- Available in any colour and exterior design option.
- Optional facade finishes – smooth, brushed, stippled and mould-cast wood panel.
Dimensional drawings
Choose between stippled, brushed, smooth or mould-cast wood panel
Transformer stations in concrete are made of prefabricated wall elements. The facade is available in a stippled, brushed, smooth or imitation wood panel finish. See the examples below.
- Green • NCS S 6010-G50Y
- Red • NCS S 6030-Y80R
- Grey • NCS S 7500-N
- Black • NCS S 9000-N
- Brownish Grey • RAL 7013
Optional NCS colours are available as extras.
Add-on services
Security agreement
With our security agreement, you can ensure the operation of your power plant and avoid costly outages.
Spare parts and maintenance
We tailor solutions to include preventative maintenance and preparedness for maximum availability.
Connect digital services
Much of the technology we install in Holtab’s products can be connected. This means that everything, from metering and automation to energy efficiency and communication, is possible.
Knowledge and inspiration
ReferencesCustom-built compact secondary substation (CSS) secures electricity supply on an island
The island of Stora Fjäderägg outside Umeå is famous for nature lovers and birdwatchers. When Umeå Energi future-proofs the island’s power supply, Holtab will be involved in delivering a custom-built compact secondary substation (CSS) with a reserve power unit.
ReferencesWorking with Tesla on new innovations
Holtab has supplied several customised substations to Tesla, fully adapted to their supercharger concept. The aim is to promote the development of products for the charging infrastructure of tomorrow.
