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TV30 DAC Test and diagnosis system for MV cables
1.Compact and lightweight, one-unit solution
2.Easy WIFI or wired based automatic control
3.Built in Time Domain Reflectometer(TDR)
4.Software support OTA
5.Uses well proven DAC excitation voltage for PD measurements (acc. IEC 60270)
6.Fully integrated dissipation factor(Tan Delta) measurement at DAC voltages
7.All in one testing and diagnosis of cables up to 20 kV
8.It can be easily fit into a car/ small van with a cargo load below 100kg
Overview
The TV30 is a DAC (Damped AC Voltage) test set with a peak voltage of 30 kV. The test set can be used for quality control on newly installed, repaired or service-aged MV cable systems with reliable results and an appropriate assessment of the condition of the cable insulation as well as of the accessories. This is the key to successful operation of the distribution and transmission networks.
DAC voltage test and diagnostic measurements (PD and TD) provide for reliable detection of poor installation, failures due to inappropriate laying, failures in accessories or deterioration in cable insulation due to aging. It allows much more than a simple “go or no-go” decision. DAC testing is an advanced maintenance tool which supports asset management and grid operation as well.
Parameters
| Technical data of TV30 | |
| Input voltage | 220V AC±10%, 50Hz |
| Output voltage | |
| DAC | 0-30kV(peak) / 0-21.2kV (rms) |
| Precision | ±1% |
| Resolution | 0.1kV |
| Frequency range | 20Hz~500Hz |
| Capacity range | 1nF ... 10μF at 20kVpeak 1nF ... 4.25μF at 30kVpeak |
| PD sensitivity range | 2pC … 100nC (acc. to IEC60270) |
| Resolution | ±1pC |
| System noise level | < 20pC at 30kV(peak) |
| PD localisation | |
| Measuring range | 0 … 20,000m |
| Propagation velocity | 5 … 120m/µs |
| Sampling rate | 200 MHz |
| Bandwidth | 150kHz ~ 45MHz, automatic adjustment |
| Precision | 1% of the cable length |
| Resolution | ± 1pC / ± 0.1m |
| TD(Tan Delta) test | |
| Measuring range | 0.1% ~ 10%, automatic adjustment |
| TDR joint localisation in calibration mode | Integrated |
| Software | User selectable graphical interface, online “live” PD Mapping |
| integrated measurement Database, comprehensive viewing | |
| processing, analysing and reporting of measurement data | |
| Temperature | |
| Operation | -20 °C … 55 °C |
| Storage | -30 °C … 70 °C |
| Relative humidity | 93 % at 30 °C (non-condensing) |
| Weight | 78 kg(net) |
| Dimensions | Ø 690 x H 720 mm |
Features
Time-saver at your service for cable diagnostics：Connect — Automatic — Inspect
The on field test is very simple, after the connection between TV30 and cable is completed, the operating software will guide you through the entire process.
Connect: After the necessary inspections and pre-tests are completed, only need few connections about DAC test.
Automatic: Second step is just follow the steps of operating software, only need to input some necessary parameters of tested cable, others system will complete it automatically.
Inspect: The test and diagnosis will performed, live PD mapping will automatic displayed on the screen.You only need to check the results and choose whether to output a test report.
