High Voltage Inc. VT33 VLF Thumper
The High Voltage Inc. VT33 VLF Thumper combines a VLF hipot tester and a thumper in a single unit, designed for effective cable testing up to 25 kV. It offers VLF testing at 33 kV AC and thumping capabilities with outputs up to 13 kV and 760 joules for precise fault localization. The device is portable, making it suitable for both field and industrial applications, capable of testing approximately 10,000 feet of shielded power cable. Features include user-friendly controls, a short warm-up time, and compatibility with data management software for ease of use in diverse settings.
View the High Voltage Inc. VLF Series
| VLF Output | 0 - 33 kVac peak @ 0.1 Hz |
| Load Rating | 1.0 μF. Can test from 1.5 to 2 miles of typical 15 kV or 25 kV cable |
| Cap. Discharge | 0 - 13 kV @ 760 joules every 8 secs |
| Radar Ready | Internal arc reflection filter |
| Input | 120V, 60 Hz, 10A or 220V, 50/60 Hz, 5A |
| Size & weight | 28"w x 26"d x 44"h, 245 lbs; 711 mm w x 660 mm d x 1118 mm h, 111 kg |
| Output Cables | 50' (15 m) of shielded HV output & ground cable |
- VLF cables up to 25 kV rating per IEEE 400.2, VDE DIN 0276 & CENELEC
- 13 kV @ 760 joules impulse rating
- VLF burn cable faults
- TDR / radar ready
5kV – 25kV CABLE TESTING AND FAULT LOCATING
- VLF test cables per IEEE400.2
- Pre-locate faults with Arc Reflection TDR
- Pinpoint faults with continuous discharge
- Verify cable integrity after repair
- Use as a voltage source for VLF Tan Delta and Partial Discharge testing.