VLF Test Set - KPG 20kV VLF
The portable cable test set KPG 20kV VLF is used for testing of medium voltage cables with extruded insulation (XLPE-, PE-, EPR-insulation) and nominal voltage up to 6.3/11kV in accordance to DIN VDE 0276/620 (CENELEC HD 620 S1).
Test is carried out with a low strain practice with very low frequency voltage of 0.1Hz and test voltage level of 3x U0 r.m.s.. VLF testing enables detection of damages of insulation within shortest test time. The devices are also able to test medium voltage cables with impregnated paper insulation (PILC).
Cable sheath test with direct voltage is possible as well.
Application:
- VLF Testing
- DC Testing
- Sheath Testing
| Technical data | KPG 20kV VLF |
| Power supply | 230 V, 5 A, 50/60 Hz |
|---|---|
| Output voltage | 5...20 kVr.m.s. , 0.1 Hz VLF (0.05 Hz optional) ± 0...30 kV DC |
| Voltage waveshapes | VLF similar sine-wave (true R.M.S. measurement), Direct voltage |
| max. load (VLF) | 3.7 µF at 19 kVr.m.s. , 0.1 Hz (app. 10 km XLPE-cable 11kV/150mm²) 6.7 µF at 19 kVr.m.s. , 0.05 Hz (app. 18 km XLPE-cable 11kV/150mm²) |
| Overcurrent trip (DC) | 10 mA |
| Discharge | integrated automatic discharge device 6250 J (bis 14 µF bei 30kV) |
| Voltage measuring range | -30 ... 0 ... 30 kV |
| Current measuring ranges | ± 0 ... 100 µA / 1 mA / 10 mA |
| Operating temperature | -20 ... +40°C |
| Construction | in two parts, Operation unit and High Voltage unit |
| Weight Operation unit HV unit |
17 kg 38 kg |
| Dimensions (W x H x D) Operation unit HV unit |
37 x 34 x 20 cm 40 x 41 x 24 cm |
Characteristics
- Compact portable VLF test device
- Easily portable from 1-2 person
- Simple operation
- Menue-assisted control
- Fully automatic test sequence
- Integrated timer with automatic tripping
- Integrated breakdown detection
- Integrated fault time detection
- Voltage measurement direct at HV output
- Protective ground circuit
- Protective circuit / indication in accord. with VDE 0104
- Leakage current measurement during VLF test
Scope of supply
- Operation unit with protective bag and cable storage
- High Voltage unit
- HV-connecting cable (shielded), standard length 5m
- Connecting cable, HV unit to Operator unit, length 3m
- Ground cables
- User manual
Options / Accessories
- Datalogging (USB) for VLF test sets
- Frequency extension: 0.05 Hz
- Transport case