VLF testing (viola)
- Testing of electrical equipment and medium-voltage cables up to 35 kV nominal voltage
- Max. test voltage 42.5 kVrms / 60 kVpeak
- Voltage shapes: VLF truesinus®, VLF rectangular wave voltage and DC voltage
- VLF truesinus® test technology enables load-independent, reproducible sinusoidal high voltage
- Cable testing according to: DIN VDE 0276-620/621 (CENELEC HD 620/621), IEEE 400.2, IEEE 400-2012
- Cable sheath testing according to IEC 60502/IEC 60229
- Fully automatic VLF cable testing and tan delta diagnostics in a single sequence
- Quick and easy test setup – no additional measuring equipment necessary
- Cable stress minimised by incremental increases in voltage and optimisation of the test duration
- Reliable information using load-independent VLF truesinus® technology and tan delta measurement accuracy of 1×10-4
Advantages MWT
- The condition of the cable line can be evaluated
- The test duration can be adapted to the actual condition of the cable
- The influence of the increased test voltage on the cable can be assessed
- The MWT is a meaningful combination of methods that are already established and accepted
