We recently completed a special retrofit project for our client Heicoop. In collaboration with SDK Engineering , we converted the Woltman 5021 foundation machine from a diesel engine to a fully electric drive, equipped with the advanced CHD400e unit.
From diesel to electric: a sustainable transformation
During the project, the existing diesel engine of the foundation machine was replaced by an electric motor and battery pack. SDK Engineering designed and built the electrical system, including:
• A 267 kWh battery pack with expansion to 600 kWh
• High-voltage cabling and cooling motors
• Electrical components and chargers
• An advanced battery management system
• Specific software for the control
Test phase and results
After installation, the machine was subjected to extensive tests and inspections. All systems were optimized and the software was fully adapted to real-world conditions. The Woltman 5021 now functions as desired in either electric or plug-in hybrid mode. Thanks to this transformation, the machine is ready to be used emission-free on a variety of projects.
Advantages of the retrofit
Electrification offers benefits not only for the environment, but also for usability:
• Emission-free operation: Ideal for sustainable construction projects.
• Flexibility: Suitable for both urban and remote locations without a power connection.
• Efficiency: The 400 kW (220 kW nominal) electric motor guarantees optimal performance.
