DAC voltage test and diagnostic measurements (PD and tan-d) provide a reliable detection of:
- Poor installation
- Failures due to inappropriate laying
- Weak spots in cable accessories
- Deterioration of 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.
Sound withstand test method with test voltages representing operational stresses Sensitive PD measurement and location in complete cable systems (insulation and accessories) Assessment of cable aging status in comparison with other cables based on dissipation factor estimation.
On-site DAC voltage test in combination with non-destructive PD and loss factor measurements is unique and fundamental for reliable service of newly installed, repaired or service-aged cable systems.