Jan 19 • Dieseko Group
Users, applications and powerpacks
EHPU News Series: Part 2
This three part series provides a practical overview of what EHPUs are, how they are used and where the technology is heading. Part one explains why EHPUs have been developed, how the concept evolved and which on-site problems they are designed to solve. Part two looks at the target users, the different models in the EHPU range and the implications for power supply and site organisation. Part three explores likely future developments and the strategic impact of electrification on foundation equipment fleets.
Users, applications and powerpacks
The Electric Hydraulic Power Unit range is primarily aimed at foundation contractors and equipment rental companies operating in markets where zero-emission construction is becoming the norm. Typical users include:
Early adoption has mainly taken place in the Netherlands and neighboring countries, where subsidy schemes and progressive tender requirements have accelerated investment in zero-emission equipment. Electric powerpacks are frequently used on infrastructure projects and in low-emission zones established by major cities.
Outside north-western Europe, interest is growing more gradually. In many regions diesel equipment will remain dominant for some time, but specific projects already demand zero-emission solutions, for example in tunnels or dense urban environments. For globally operating contractors, EHPUs provide a way to comply with such project-specific requirements without changing their entire fleet strategy.
- Civil engineering and infrastructure contractors working on bridges, quays, rail and road projects
- Urban foundation specialists active in inner-city redevelopment and high-density residential projects
- Contractors engaged in piling works near sensitive environments, such as hospitals or schools, where noise and emissions must be minimized
- Rental companies that want to offer zero-emission options alongside conventional diesel powerpacks
Early adoption has mainly taken place in the Netherlands and neighboring countries, where subsidy schemes and progressive tender requirements have accelerated investment in zero-emission equipment. Electric powerpacks are frequently used on infrastructure projects and in low-emission zones established by major cities.
Outside north-western Europe, interest is growing more gradually. In many regions diesel equipment will remain dominant for some time, but specific projects already demand zero-emission solutions, for example in tunnels or dense urban environments. For globally operating contractors, EHPUs provide a way to comply with such project-specific requirements without changing their entire fleet strategy.
The EHPU Range and Key Specifications
Dieseko’s Electric Hydraulic Power Unit range currently consists of four models: the 250e, 400e, 700e and 1100e. The first three units are designed for a standard 400 V AC, 50 Hz power supply and can be connected to both grid power and battery systems using standardized Powerlock connectors. The 1100e is a conceptually different, high-end solution.
Technical concept
Across the range, several design principles are consistent:
Technical concept
Across the range, several design principles are consistent:
- High energy efficiency, using air-cooled asynchronous motors for the 250e, 400e and 700e, and liquid-cooled permanent magnet motors for the 1100e
- The 700e has a sequenced start-up with soft starters or inverters, and a kVAR filter which reduces inrush current and eases the load on grid connections or battery containers
- Low hydraulic losses, achieved by using adjustable piston pumps that precisely control flow and pressure
- Extended oil and component life, supported by high-quality filtration and optional bypass filtration
- Reduced maintenance requirements, because there is no combustion engine with its associated filters, fluids and moving parts
- Online monitoring and remote service capabilities, enabling efficient diagnostics and support
Model overview
All EHPUs are built on robust frames with integrated oil tanks and are engineered for transport with standard lifting and lashing points. The units are designed for low noise emission compared to diesel powerpacks, which is an additional benefit on sensitive urban sites.
For projects that require very high hydraulic power, it is possible to couple two 700e units to effectively double the available capacity. These two connected units can drive very large vibratory hammers that would otherwise require a bespoke power solution.
Power Supply on the Jobsite
Supplying sufficient electrical power on a construction site is often a bigger challenge than operating the EHPU itself. A standard 400 V construction power connection is usually not strong enough to run large foundation tools directly. Contractors therefore increasingly work with specialist energy suppliers who provide battery containers, mobile transformers or alternative-generation units.
A common setup is to use battery containers that are slowly charged from a limited grid connection over many hours, then discharge at high power when the EHPU operates. In some cases biogas generators or hydrogen-based power units are used to charge the battery containers, creating a low-emission or even near-zero-emission energy chain.
Because the Electric Hydraulic Power Units are based on standard AC connections, they can be combined with a wide range of such solutions. Dieseko’s role is to specify the electrical requirements of each EHPU model so that energy suppliers and contractors can dimension their power systems correctly.
A common setup is to use battery containers that are slowly charged from a limited grid connection over many hours, then discharge at high power when the EHPU operates. In some cases biogas generators or hydrogen-based power units are used to charge the battery containers, creating a low-emission or even near-zero-emission energy chain.
Because the Electric Hydraulic Power Units are based on standard AC connections, they can be combined with a wide range of such solutions. Dieseko’s role is to specify the electrical requirements of each EHPU model so that energy suppliers and contractors can dimension their power systems correctly.
Safety, Skills and Organization
Electrification of heavy equipment introduces new safety considerations. High-voltage systems, large cables and powerful battery containers require careful design and disciplined work processes. On many sites, contractors are still building experience with these technologies.
Operating an EHPU in daily work is comparable to using a conventional diesel powerpack from the perspective of the crane operator or piling crew. However, connecting and maintaining the electrical systems calls for trained personnel who understand national electrical safety standards and are formally appointed to work on these installations.
Industry initiatives in several countries are working on guidelines for the “electrified jobsite”, including the role of a responsible electrical supervisor who oversees the safe connection and operation of high-power equipment. As zero-emission work becomes more common, such roles and procedures are likely to become standard on larger projects.
Operating an EHPU in daily work is comparable to using a conventional diesel powerpack from the perspective of the crane operator or piling crew. However, connecting and maintaining the electrical systems calls for trained personnel who understand national electrical safety standards and are formally appointed to work on these installations.
Industry initiatives in several countries are working on guidelines for the “electrified jobsite”, including the role of a responsible electrical supervisor who oversees the safe connection and operation of high-power equipment. As zero-emission work becomes more common, such roles and procedures are likely to become standard on larger projects.
SUPPORT & COOPERATION
Machinist Ltd
Ivanna Rukin and Machinist Oy will assume complete leadership of the development of this project. Machinist will manage the production team and project management.
Factories
Factories such as Junttan, Movax, Dieseko Group, ArcelorMittel and other international construction equipment manufacturers have a continuous willingness to share their knowledge, introduce it and cooperate with the engineering teams.
Häme University of Applied Sciences (HAMK)
Mechanical Engineering Department and Mr. Antti Hänninen in the Häme University of Applied Sciences (HAMK) are invited to help with project implementation.
Kajaani University of Applied Sciences
We are collaborating with Kajaani University of Applied Sciences (Kajaani AMK) which has recently received government funding for the development of VR and 3D technologies. This collaboration provides an opportunity for us to leverage Kajaani AMK's expertise and resources in the development of our online education platform. Kajaani AMK is open to ideas and ready to provide resources to support for our efforts in integrating VR and 3D technologies into our platform. This collaboration can provide us with access to cutting-edge technology and expertise, enabling us to stay ahead of the curve and offer a unique and innovative learning experience for our users.
Finnish government (Ministry of Education)
The platform is supported by the Finnish government:
1. Financially ( the country subsidizes the budget for education)
2. Technology infrastructure
3. Promotion at the government level, compulsory for the engineering force
Foreign governments
As a pilot project, the Uzbekistani government has already agreed to accept this platform as a mandatory tool for engineering society. It was agreed with the Ministry of Education that all engineers in the country would be required to undergo this kind of education. The Uzbekistan government recognizes the importance of investing in the education and training of its workforce, especially in the construction and piling industry, which has seen significant growth in recent years. By mandating this educational program, the government aims to ensure that Uzbekistan's workforce is equipped with the latest knowledge and skills to meet the demands of the industry.
Other institutions
Other educational organizations such as universities and technical polytechnics can benefit from the platform by accessing resources that can supplement their own educational offerings.
CORPORATE TRAINING PLATFORM
- A corporate training platform refers to a software designed to offer various training tools and resources. These resources can encompass further professional education and virtual training. This platform represents a progressive step forward in the realm of corporate training.
- Corporate learning platform encompasses training programs created by companies to educate their stakeholders on new processes, tools, technical skills, and other essential knowledge to align with current market trends. This platform refines and empowers the stakeholders, equipping them to efficiently tackle tasks and meet the demands of the business. We are especially targeting engineers in developing markets within Central Asia, South Asia, the Caucasus Area, and further on Latin America. These markets cover huge geographical areas but infrastructure-wise leaving continuous growth and development. The local workforce is in demand to broaden their vision to international projects.
- Without exaggeration, Finland, the Netherlands and neighboring countries are the world leaders in the industry of foundation and ground construction with innovative piling technologies. The area possesses a high level of know-how in this field.
EXPANSION INTO FOREIGN MARKETS IN DEVELOPING COUNTRIES
Example: Challenges in Central Asia
Low cost of human labor
Due to the low cost of labor in the area, modern building technology and machine usage are being adopted gradually. The majority of workers on modern building projects are manual laborers, which results in low industrialization. New machinery are needed as soon as new construction approaches are adopted, which is both a difficulty and an opportunity.
Cultural mindset
In post-Soviet countries, the responsibility for infrastructural construction, development, and architecture is outsourced to so-called "Project Development Institutes." These institutes are partially private but mainly are government entities responsible for studying and implementing all innovations that are approved as legislation and used on the job sites. As a result, construction methodologies in the Project Development Institutes of the region are old and follow post-Soviet structure. The local engineering force, due to their old age, requires a lot of education about new technologies, modern ways of ground construction, and the use of new machines.
Safety requirements
The recent earthquake in Turkey has led to a surge of awareness regarding foundation construction and safety in seismic areas. In Central Asia, where a lot of ambitious projects are about to evolve drives demand for knowledge and international experience. This has resulted in local professionals actively seeking new solutions and knowledge to ensure the safety of their own construction projects.Absence of active know-howIn this market, there are no other competitors offering the same type of service to customers. Therefore, our online "University" will offer a unique value proposition to promote our know-how and machinery in the target markets. By providing access to the latest knowledge and industry insights, we can help local professionals stay ahead of the curve and meet the demands of the industry. This will not only benefit our business but also contribute to the overall economic growth and development of the region.
Industrialization level
Lower rate of technological usage in terms of machines and equipment. A lot of steps in the process are completed in an old-fashioned way. High demand in infrastructural construction requires knowledge and implementation of modern technology.
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