Project Description
Cables for HV testing
Application
Flexible silicone frostproof high-voltage cables KEP-100, KEP-70 and KEP-70p are suitable for high-voltage testing both as part of ETL vans and separately, as well as for use in the measuring circuits of tgδ insulation (KEP-12t). Сable test vans ETL-40V and ETL-80V made by
KharkovEnergoPribor as a means of testing and detecting cable faults are are both supplied with flexible silicone frostproof highvoltage cables, which retains its flexibility at the temperatures as low as minus 40˚С.
Cable Insulation Tester VLF-60
Application
VLF-60 Cable Insulation Tester made by KEP is a very low frequency high potential tester that ensures efficient testing and fault location on medium voltage cables. Very low frequency (VLF) testing involves applying frequency in the range of 0.01 to 0.1 Hz to the cable
under test, which is non-destructive to insulation of proper quality, but is enough to detect cable faults. Compared to DC cable testing, which can be damaging to good insulation, VLF testing does not have such a detrimental effect on the cable being tested.
| Parameter | Value |
|---|---|
| Output Voltage | |
| Sinusoidal | 0 – 62 kV peak / 0 – 44 kV RMS |
| DC | ± 0 – 60 kV |
| Squarewave | 0 – 60 kV |
| Accuracy | ± 1 % |
| Accuracy | 0.1 kV |
| Output Curent | |
| Sinusoidal (RMS) | 26 mA |
| DC / Squarewave | 40 mA |
| Accuracy | ± 1 % |
| Resolution | 1 μA |
| Output Frequency | 0.01 – 0.1Hz in steps of 0.01 Hz (default 0.1 Hz) – auto frequency selection |
| Output Load | 1 μF @ 0.1 Hz @ 44 kV RMS 5.0 μF @ 0.01 @ 44 kV RMS 10.0 μF max capacitance (at lower frequency and Voltage) |
| Output Modes | |
| VLF AC Sinewave | yes |
| VLF AC Squarewave | yes |
| DC (positive or negative polarity) | yes |
| Vacuum Bottle Test Mode (DC) | yes |
| Cable Jacket / Sheath Testing | yes |
| Sheath Fault Location | yes |
| Breakdown Mode | |
| Fault Condition Mode | yes |
| Fault Trip Mode | yes |
| Metering | |
| Voltage and Current | True RMS and / or peak |
| Capacitance | 0.1 nF to 20 μF Range |
| Resistance | 0.1 MΩ to 20 GΩ |
| Waveform | Real time oscilloscope display of actual output voltage waveform |
| Safety | 50 / 60 Hz – 12 kV Feedback Protection / Dual Discharge Device (internal) |
| Duty Cycle | Continuous |
| Computer Interfaces | USB, RS-485 |
| Display | Color touchscreen TFT 5.7 “ (115 × 86 mm) |
| Input Voltage | (110 to 240) V AC ±10 %, 50 / 60 Hz |
| Consumption Power | 1.2 kVA |
| Dimensions (H × W × D) | 530 × 580 × 410 mm |
| Weight | 60 kg |