The Westerscheldetunnel, a vital infrastructure asset managed by N.V. Westerscheldetunnel on behalf of the Province of Zeeland, is the longest tunnel in the Netherlands at 6.6 kilometers underwater. As a key transportation route, the tunnel operates 24/7 to ensure smooth connectivity between regions, making uninterrupted operation critical. However, a power outage in such an environment could jeopardize the safety of travelers by disrupting critical systems, such as lighting, ventilation, and signaling. Ensuring these systems remain operational, even during power disruptions, is essential to safeguard the lives of those driving through the tunnel. Delta addressed this vital need by deploying state-of-the-art IPT-50kVA Industrial Power Transformer-based UPS systems, further enhancing road safety and operational reliability. This solution highlights Delta’s expertise in delivering comprehensive turnkey solutions for industrial environments. 

Innovative tailored power solutions
The UPS system previously used in the Westerscheldetunnel had reached the end of its lifespan and needed to be replaced. However, the tunnel’s length and confined space made installing the new system highly challenging. To address these issues, a solution was needed that could ensure reliable power delivery while optimizing space and operational efficiency. 

To meet these requirements, Delta supplied its newly launched IPT-50kVA UPS units, each with a compact footprint (600 x 830 x 1420 mm), making them ideal for installations where space is limited. Furthermore, the system employs Delta Zig-zag transformer  and high-efficiency power factor correction technology to provide industry-leading short-circuit protection in harsh industrial conditions, effectively optimizing upstream power equipment investment and reducing capital expenditure. The system can also be equipped with an optional IP43-rated enclosure, ensuring stable operation even in adverse conditions. These innovations provided a reliable and manageable power solution that directly addressed the tunnel’s requirements.
The complex logistics of installing a new system within the tunnel presented significant challenges.

Efficient implementation in a record time frame
Commissioned by N.V. Westerscheldetunnel, Croonwolter&dros, responsible for all traffic technology systems within the tunnel, collaborated with system integrator e-Power to implement Delta's IPT-50kVA UPS. Delta’s product management and engineering teams collaborated closely with e-Power to deliver the UPS systems on a tight schedule, meeting the demanding deadline.

The new systems have significantly enhanced the tunnel's operational efficiency. Features such as a user-friendly 10-inch waterproof touch panel and advanced event analysis capabilities have reduced maintenance time and costs. Additionally, the compact design also streamlined installation, optimizing project and labor management.
The IPT-50kVA UPS’s features such as a user-friendly 10-inch waterproof touch panel and advanced event analysis capabilities have reduced maintenance time and costs.

Ensuring safety through reliable power
The reliability of the IPT-50kVA UPS systems plays a critical role in ensuring safety within the Westerscheldetunnel. These systems provide seamless backup power, ensuring that essential functions like signaling, ventilation, and lighting remain operational even during power outages. Such redundancy is vital to maintain visibility, air quality, and clear communication within the tunnel, preventing accidents and ensuring the safety of the traffic going through the tunnel.

Mr. Leon van der Kraan, Procurement Manager at Croonwolter&dros, remarked: “The collaboration between Delta, e-Power, and Croonwolter&dros has been vital in the successful upgrade of the Westerscheldetunnel's power infrastructure. Delta's innovative IPT-50kVA UPS systems have met our stringent requirements, ensuring reliable and efficient tunnel operations that prioritize traffic safety.”

Overcoming challenges with strategic collaboration
Delta's partnership with e-Power ensured efficient handling of logistics, installation, commissioning, and ongoing service, adhering to Croonwolter&dros' high standards for reliability and performance. This collaboration effectively addressed logistical challenges, including extended sea freight times from Delta’s overseas factory to Europe.

Mandy Ho, Sales Manager, Data Center Segment, Delta EMEA, added: “Our IPT-50kVA systems’ compact footprint and robust features provided the perfect solution for N.V. Westerscheldetunnel’s needs. The successful delivery and installation by our premium partner e-Power further cement Delta’s position as a leading provider of containerized data center solutions.”

Arnoud Blijleven, Technical Director at e-Power, emphasized: “The innovative IPT-50kVA systems have exceeded our expectations in terms of performance and reliability. This project exemplifies the strength of our partnership and our combined ability to deliver outstanding solutions for critical infrastructure.”
Delta’s IPT UPS ensures 24/7 uninterrupted operation of Westerscheldetunnel.

Delta's UPS solutions have been widely implemented in critical transportation infrastructure worldwide, including airports, railways, and highway tunnels, providing stable and efficient power protection for global transportation systems. The Westerscheldetunnel project marks the first successful implementation of Delta’s IPT UPS solutions in the Netherlands. With strong partnerships and a proven track record of excellence, Delta has become a leading provider of UPS systems for critical infrastructure. Moving forward, Delta will continue to leverage its valuable experience to deliver innovative and reliable power solutions, ensuring the stable operation of essential infrastructure.

Click to watch the video for more details on the Westerscheldetunnel project.