VLF-MWT — Pracitical experiences of a new way of cable condition assessment

Condition-based maintenance is an important and necessary strategy for coping with today´s asset management requirements for an electric utility system operator. However, this requires an exact knowledge of cable conditions. Testing and diagnostic methods which provide meaningful results and are simple to apply in the field are an economical prerequisite. The Monitored Withstand Test (MWT) meets these requirements. The MWT consists of a combination of established methods for cable testing and diagnostics and provides the system operators additional information on the cables condition for optimal planning of repairs or replacements to minimize downtimes.