VLF testing and diagnostics unit
Offline testing and diagnostics in medium-voltage networks
Our well-thought-out and cleverly devised testing and diagnostics systems enable fully automatic VLF cable testing and dissipation factor measurement (Full MWT) in a single flow. This saves time and costs, and delivers precise statements.
frida TD – the advantages
The measurement methods
The VLF testing makes it possible to locate insulation faults in plastic- and paper-insulated mass-impregnated cables in the shortest of testing times without impairing the quality of the surrounding insulating material.
The dissipation factor measurement (tan delta) with 0.1 Hz VLF truesinus® provides differentiated information on the ageing condition of paper-insulated mass-impregnated and PE/XLPE cables. In the case of PE/XLPE cables, the dissipation factor measurement is capable of differentiating between new, slightly or severely "water tree”-damaged cables. This makes it possible to prioritise the need to replace cables.
The Monitored Withstand Test with dissipation factor measurement combines the cable testing and dissipation factor measurement, allowing an accurate and comprehensive assessment of the cable condition. In addition, there is minimum load on the cable due to the optimised test duration.
In combination with the PD-TaD 62 partial discharge diagnostics device and the BAUR Software 4, it is also possible to measure partial discharges in parallel with dissipation factor measurements, thus saving time.