Initial situation
The ground waterworks Haseldorfer Marsch was originally built without any form of lightning or surge protection. However, it was discovered that uncontrolled incidents occurred repeatedly when thunderstorms arose; incidents such as invalid error messages, electronics failing or electrical equipment being destroyed. For that reason, the waterworks maintenance team decided to install surge protection in all of their electrical lines.
Solution
To protect their power lines the Haseldorfer Marsch waterworks utilises lightning and surge protection components of the types PU I – III that offer compelling product characteristics such as high discharge currents and a compact design. With regard to signal protection Weidmüller’s new product series VARITECTOR SPC (VSPC) offers optimum attributes. The pluggable surge protection module for measurement and control signals provides the defined protection classes D1, C2 and C1 as specified in IEC 61643-22 and contains an internal monitoring function that regulates error detection and error message processes.
