Trade 04 · Charging infrastructure
E-mobility
Rapid charging parks from the cable route to commissioning – trained by the manufacturer for rapid charging stations.



1Service items
| Item | Service | Description | Unit |
|---|---|---|---|
| 04.10 | Cable route and cable pulling | From the grid connection or substation to the charging point: trench, conduits, underground cable. | m |
| 04.20 | Foundations and conduits | Foundations for chargers and power units, conduits with spare capacity. | pc |
| 04.30 | Installing rapid chargers | Setting up and connecting rapid charging stations with 150 and 300 kW. | pc |
| 04.40 | Commissioning | Commissioning the station and connecting it via the charger's web interface. | pc |
| 04.50 | Maintenance and upgrade | Annual preventive maintenance and power stack upgrades to manufacturer specification. | pc |
2Power path
Grid connection
Substation, low-voltage distribution, house connection or sub-distribution – this is where the route begins.
Cable route
Trench, conduits in the sand bed, warning tape, pulling the underground cables and compacted backfill.
Foundation and installation
Foundation with cable entry matched to the charger, installation of power unit and chargers.
Commissioning
Testing, commissioning and connecting via the charger's web interface.
3Civil works for charging points
Cable routes
From the connection point to the charging point – in asphalt, paving or green areas.
Spare conduits
Additional conduits for future charging points, laid in the open trench at little extra effort.
Foundations
Foundations and plinths for chargers and wallbox pillars.
Surface and marking
Paving, asphalt and collision protection, joined to the existing surface.
For charging points where we only build the civil works, the electrical connection of the charger is carried out by a licensed electrical contractor.
4Certificate
Certificate of 14 November 2023
Manufacturer training in rapid charging technology
Jens Kalwer
Jens Kalwer has completed the manufacturer's training for rapid charging stations: installation, commissioning and annual preventive maintenance of 150 and 300 kW stations as well as power unit upgrades.
5Photos
Enlarge photo
Enlarge photo
Enlarge photo
Enlarge photo
Enlarge photo
Enlarge photo
Enlarge photo
Enlarge photo6Locations
Service areas and truck stops
Rapid charging on the motorway.
Car parks and retail charging parks
Retail, hotels and restaurants.
Company premises
Charging points for company cars, fleet and staff.
Municipalities
Public charging points on streets and squares.
Residential complexes
Underground car parks and parking spaces of property managers.
7Enquiry
Enquire: E-mobility
This trade's items can be carried straight into the enquiry form.
Contact
Request a project
Send us your bill of quantities, route plan or simply location and scope. We will get back to you personally.
- Contractor
- Kalwer Netzbau, Bergedorf
- Phone
- 040 66969 120
- Mobile
- 040 66969 121
- 040 66969 121
- Contact person
- Jens Kalwer · j.kalwer@kalwer-netzbau.example
- Working hours
- Monday to Friday, 8 am – 5 pm