Features
- Extremely compact high-power VLF test device
- Easily portable for 1-2 people
- Simple operation: menu-assisted control with industrial class OLED display
- Fully automatic test sequence
- Integrated timer 1-300 min with automatic tripping
- Integrated breakdown detection
- Integrated fault time detection
- Voltage measurement direct at HV output
- Protective ground connection
- High voltage start key interlock
- Protective circuit / indication in accord. with EN 50191
- Leakage current measurement during VLF test
Technical specification
| Model | S-44 VLF | S-44 VLF | |||
|---|---|---|---|---|---|
| Index | WMGBS44VLF | WMPAS44VLF | |||
| Power supply | 230 V (±10%) 10 A, 50/60 Hz |
110 V (100 V…127 V) 15 A, 50/60 Hz |
|||
| Output voltage | 0…44 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…62 kV DC | 0…44 kVRMS VLF 0.1 Hz (option: 0.05 Hz + 0.02 Hz) ± 0…62 kV DC | |||
| Voltage waveshape | |||||
| VLF | similar sine-wave, symmetrical, with True RMS measurement | similar sine-wave, symmetrical, with True RMS measurement | |||
| DC | direct voltage, negative and positive polarity | direct voltage, negative and positive polarity | |||
| Overcurrent trip (DC) | 10 mA | 10 mA | |||
| Max. testable cable length, max. capacitance (VLF) | up to 60 km (15.0 µF at 18 kVRMS, 0.02 Hz)* | up to 60 km (15.0 µF at 6 kVRMS, 0.02 Hz)* | |||
| Max. load at max. output voltage (VLF) and 0.1 Hz | 1.5 µF at 44 kVRMS | 1.0 µF at 44 kVRMS | |||
| Discharge – integrated automatic discharge device | max. 12500 J | max. 12500 J | |||
| Voltage measuring range | -70…0…70 kV accuracy ±1% | -65…0…65 kV accuracy ±1% | |||
| Current measuring ranges | ±0…100 µA / 1 mA / 10 mA | ±0…100 µA / 1 mA / 10 mA | |||
| Operating temperature | -20…+45°C | -20…+45°C | |||
| Storage temperature | -25…+70°C | -25…+70°C | |||
| Duty | continuous operation | continuous operation | |||
| PC interface | USB stick | USB stick | |||
| Construction | in two parts: operation unit and high voltage unit | in two parts: operation unit and high voltage unit |
