Electric test system VLF Sine 37 kV

tangent deltafor electrical networksfor cables

Application
Cable commissioning testing (up to 15 kV) & condition monitoring (up to 25 kV) of MV cables.

The VLF SINE 37 allows testing crews to efficiently and reliably test and diagnose MV cables in compliance with industry standards, by saving testing time due to its high test capacity and intuitive, automated operation.


A powerful, comprehensive solution for MV cable test and diagnostics
Combining robust performance with practical mobility, the VLF Sine 37 stands out as the most powerful portable unit in its class, capable of testing up to 1.6 μF @ 26 kVRMS, making reliable testing and diagnostics of cables longer than 5 km effortless.

The unit is a truly multifunctional tool. It performs:
· VLF and DC testing
· Sheath testing and sheath fault pinpointing (with the ESG NT2 step voltage probe)
· Tan delta measurements for accurate assessment of cable condition and insulation integrity
· Can be used as a power source for partial discharge (PD) measurements to identify local problems such as workmanship issues

Thanks to its smart frequency control, the system automatically adjusts the test frequency based on cable length, ensuring testing even on 15 kV-rated cables up to 25 km long.

Intuitive interface for easy operation
The touch-enabled user interface is designed for quick setup and smooth operation. Even advanced diagnostic procedures can be performed with minimal training - making the VLF Sine 37 a time-saving asset for both routine and in-depth tasks.

Built-in Data Management
All test results are automatically analysed and stored on the unit’s large internal memory - no external PC required. Operators can easily:
· Review results directly on the device
· Export data via USB, or soon via wireless transfer to a mobile device
· Compare historical measurements, such as year-on-year test data