The BAUR Viola TD VLF Cable Diagnostics Test Set is a powerful, precise, portable cable diagnostics tool. It can be used to perform cable and cable sheath tests on electrical equipment, such as generators, transformers and switchgear, and medium-voltage cables up to 35kV. It is also capable of performing insulation tests and includes a Monitored Withstand Test.
Additionally, when used with the BAUR PD-TaD 60 PD Diagnostics System, the BAUR Viola TD VLF Cable Diagnostics Test Set can measure partial discharge and perform Full Monitored Withstand Tests with tan δ. Furthermore, when used with a VSE box, the BAUR Viola TD VLF Cable Diagnostics Test Set can detect leakage current.
Very low frequency testing enables the BAUR Viola TD VLF Cable Diagnostics Test Set to find and diagnose faults in plastic- and paper-insulated, mass-impregnated cables quickly, easily and without affecting the quality of the surrounding material.
The BAUR Viola TD VLF Cable Diagnostics Test Set has a maximum test voltage of 42.5 kVrms/ 60kVpeak and supports voltage shapes including VLF truesinus®, VLF rectangular wave voltage and DC voltage. The BAUR Viola TD VLF Cable Diagnostics Test Set is able to perform tests in accordance with the following standards:
The BAUR Viola TD VLF Cable Diagnostics Test Set’s truesinus® technology ensures that results are repeatable and comparable by providing a load-independent, reproducible sinusoidal high voltage, enabling reliable voltage tests and precise dissipation factor and partial discharge measurements.
Furthermore, using dissipation diagnosis with 0.1Hz truesinus®, the BAUR Viola TD VLF Cable Diagnostics Test Set can provide differentiated information pertaining to the ageing of paper-insulated, mass-impregnated cables and PE/XLPE cables. The user is able to differentiate between new, slightly or severely ‘water-tree’ damaged PE/XLPE cables. The BAUR Viola TD VLF Cable Diagnostics Test Set can perform dissipation factor testing on electrical equipment and medium-voltage cables up to 35kV to an accuracy of 1x10-4.
The MWT can also be used to evaluate the condition of cable insulation; the BAUR Viola TD VLF Cable Diagnostics Test Set includes a condition-based test duration feature that can be used to ensure the cable is only exposed to the increased test voltage for the required duration.
In addition to this, when the BAUR Viola TD VLF Cable Diagnostics Test Set is used in conjunction with the BAUR PD-TaD 60 Diagnosis System, it can perform a Full MWT. This combines VLF cable testing with parallel dissipation factor and partial discharge measurements to provide a comprehensive analysis of the cable’s insulation.
The BAUR Viola TD VLF Cable Diagnostics Test Set supports automated and individually programmed diagnostic sequences, including evaluation. Data can be transferred via a USB interface and managed using the Diagnostics Reporter PC Software.
Finally, the BAUR Viola TD VLF Cable Diagnostics Test Set includes an automatic discharge unit.
The BAUR Viola TD VLF Cable Diagnostics Test Set is a very low frequency, high-voltage testing and diagnostics tool optimised for verifying the condition of electrical equipment and medium-voltage cables up to 35kV.
The BAUR Viola TD VLF Cable Diagnostics Test Set has a sister product, the BAUR Viola VLF Cable Diagnostics Test Set. The table below details the measurement/ test capabilities of these instruments when used independently and/or in conjunction with the BAUR PD-TaD 60 Diagnostics System.
Method | Significance and Benefits | BAUR equipment |
VLF testing | Easy voltage test (Verdict: Pass / Fail) | viola |
tan δ measurement | Evaluation of the dielectric condition of the insulation, indication of PD | viola TD |
PD test | Diagnostics of local weak points and their location | viola & PD-TaD 60 |
Simultaneous tan δ and PD measurement | Combination of statements of a tan δ measurement and PD measurement | viola TD & PD-TaD 60 |
Shorter test duration with simultaneous tan δ and PD measurement | ||
Better detection of hidden faults (e.g. moist joints) through conditioning of weak points and simultaneous monitoring of tan δ values and PD activities |
||
MWT with tan δ | Evaluation of the dielectric condition of the insulation, indication of PD | viola TD & PD-TaD 60 |
Intelligent withstand voltage test | ||
Shorter test duration for cables in good condition | ||
VLF cable testing with parallel PD test | Localisation of faults in the cable insulation | viola & PD-TaD 60 |
Intelligent withstand voltage test | ||
Full MWT (VLF cable testing with parallel dissipation factor and partial discharge testing) |
Evaluation of the dielectric condition of the insulation, indication of PD | viola TD & PD-TaD 60 |
Localisation of faults in the cable insulation | ||
Intelligent withstand voltage test with shorter test duration for cables in good condition | ||
Shorter test duration with simultaneous tan δ and PD measurement | ||
Better detection of hidden faults (e.g. moist joints) through conditioning of weak points and simultaneous monitoring of tan δ values and PD activities |
Call 01642 931 329 or complete the form:
Output Voltage | |
Frequency range | 0.01 – 0.1 Hz |
VLF truesinus® | 1 – 42.5 kVrms (60kVpeak) |
VLF square wave voltage | 1 – 60 kV |
DC voltage | ±1 – 60 kV |
Resolution | 0.1 kV |
Accuracy | 1 % |
Load range (VLF testing) | 1 nF – 10 µF |
Output Current | |
Measurement range | 0 – 70 mA |
Resolution | 1 µA |
Accuracy | 1% |
Max. capacitive load | 1 μF at 0.1 Hz, 42.5 kVrms / 60 kVpeak (≈ 4 km)* |
3 μF at 0.03 Hz, 42.5 kVrms / 60 kVpeak (≈ 12 km)* |
|
8 μF at 0.01 Hz, 40 kVrms / 57 kVpeak (≈ 41 km)* |
|
* max. cable length at a cable capacity of 0.24 µF/km |
|
Dissipation Factor Measurement (Viola TD) | |
VLF truesinus® | 1 – 42.5 kVrms |
Load range | 10 nF – 10 µF |
Resolution | 1 x 10-6 |
Accuracy | 1 x 10-4 |
Measurement range | 1 x 10-4 – 21 000 x 10-3 |
tan d measuring frequency | 0.1 Hz |
Automatic detection and compensation of leakage currents |
With VSE box (optional) |
Diagnostic Reporter | Used to process and evaluate test and measurement logs |
Based on MS Excel: From version MS Excel 2007 | |
General | |
Input voltage | 100 – 260 V, 50/60 Hz |
Power consumption | Max. 1 400 VA |
Reverse voltage protection | 13 kV |
Degree of protection | IP 24 |
Data interface | USB 2.0 |
Dimensions (W x H x D) excl. cable compartment | |
HV part | 505 x 503 x 405 mm |
Operating unit | 505 x 433 x 405 mm |
Total (two-part) | 505 x 854 x 405 mm |
Weight | |
HV part | 57 kg |
Operating unit | 19 kg |
Ambient temperature (operational) | -10°C to +50°C |
Storage temperature | -20°C to +60°C |
Safety and EMC | CE-compliant in accordance with Low Voltage Directive (2006/95/EC), EMC Directive (2004/108/EC), EN 60068-2-ff Environmental testing |
User interface available in 13 languages | Czech, Chinese (CN), Chinese (TW), Dutch, English, French, German, Italian, Korean, Polish, Portuguese, Russian, Spanish |