Megger VLF Sine Wave 37kV Tester

The Megger VLF Sine Wave 37 kV Tester combines VLF withstand testing, cable diagnostics, sheath testing, and fault pinpointing into a single compact unit that streamlines workflows and reduces equipment requirements while delivering reliable, repeatable results across long cable runs with minimal setup.

The VLF Sine 37 kV offers a testable capacity of up to 1.6 μF at 26 kVRMS, making it one of the most capable portable testers in its class. It handles cable lengths over 5 km and can test 15 kV‑rated cables up to 25 km, thanks to its smart VLF system that automatically adjusts frequency based on cable length without manual recalibration. An integrated tan delta function allows for both cable integrity testing and condition assessment in a single process, providing deeper insight into insulation health and helping identify early‑stage degradation before it becomes a failure. Automatic evaluation aligned with recognised standards ensures consistent, dependable diagnostics, while user‑defined trending supports long‑term condition monitoring.

The VLF Sine 37 kV operates independently with no need for an external computer, supported by intuitive onboard software and a responsive 7‑inch colour touchscreen. Test data is automatically analysed, stored, and easily accessed for review or long‑term comparison. Exporting results is straightforward via USB, with wireless capability available as an additional convenience. The unit includes pluggable high‑voltage test leads in 5 m, 10 m, or 15 m lengths, allowing it to adapt easily to different site requirements. It also supports sheath testing and fault pinpointing when used with the ESG NT2 step voltage probe, extending its functionality beyond standard testing tasks.

For advanced diagnostics, the VLF Sine 37 kV can be paired with the optional PDS 62‑SIN partial discharge coupler, transforming the system into a comprehensive diagnostic platform capable of combining withstand testing, tan delta analysis, and partial discharge measurement in one integrated setup. Additional accessories, including transport cases and test adapters, enhance versatility and protection during transit. Features such as automatic breakdown detection and test‑object discharge further protect both the operator and the equipment, while continuous‑duty capability supports extended testing sessions without interruption.

Part number: 1016791

Key Features

• High test capacity of up to 1.6 μF @ 26 kVRMS and 0.1 Hz
• Maximum test capacity of 10 μF
• Continuous duty cycle
• Large 7” colour-touchscreen
• Intuitive user software with large internal memory
• Optional internal tan delta with automatic evaluation acc. to IEEE 400.2 or user-defined trending limits
• Insulation resistance measurement up to 5 GOhm
• Via optional PDS 62-SIN PD coupler expandable to a full test and diagnostic test set
• Maximum user safety through breakdown detection, automatic discharge of the test object
• Sheath testing and sheath fault pinpointing acc. to IEC 60229
• Monitored withstand testing in TD and PD mode
• Prepared for wireless data-transfer