DEHNshort protects the Helmholtz Zentrum Berlin
The entire low-voltage main distribution board was replaced during ongoing operation. This placed extremely high demands on the protection of the technicians against arc faults.
DEHNshort, the active arc fault protection system quenches arc faults in milliseconds – exactly the right choice for this project.
DEHN solution
Tested protection concept against arc faults
Customer
Helmholtz-Zentrum Berlin für Materialien und Energie
Project
Exchange of the existing LVMDB at the Helmholtz Zentrum
Sector
Research and development
Location
Berlin
Implementation
January 2022
Planning
Ingenieurbüro Noack GmbH
Product
DEHNshort
The challenge
The Helmholtz-Zentrum Berlin (HZB) is a research centre for materials and energy that focuses on solar cells, batteries, catalytic converters and light sources. The entire LVMDB had to be replaced due to its age.
It was already clear during the planning phase that a very high level of energy would be released in the event of an arc fault. This meant that the safety of the technician team had top priority.
The key requirement was the ability to handle short-circuit currents of up to 100 kA.
The solution
The solution
As the necessary work would take place during ongoing operation and a very high energy density was to be expected, personal safety was of particular importance.
The planning process therefore began with a risk analysis. It revealed the need for an active arc fault protection system.
The DEHNshort active system used here has two advantages:
- Protection of people
who work in the vicinity of a system currently in operation. - Quick restoration of service of the switchgear
If the system is triggered by an arc fault, the electric arc is quenched extremely quickly. This keeps damage to a minimum so that it can be quickly switched back on.
DEHNshort provides safety
"Planning always starts with expert advice. The technical boundary conditions were crucial here."
Lutz Noack
Managing Director at Ingenieurbüro Noack GmbH
"We guarantee the reliability of the electrical supply and availability of the ring accelerator for our customers. However, this also includes personal safety when providing 5 MW @ 0.4 kV for our operating personnel."
Andreas Knoch
FM-T / Power Supply Department Group Leader
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