Description:
In recent years we have tested a range of different designs of cable, including extruded polymeric, PILC, mass impregnated and fluid filled. Distribution cables, transmission cables, offshore wind array and export cables, HVDC cables, submarine fibre optic cables and neutrally buoyant cable systems have all been assessed.
Examples of the cable testing which TDHVL has performed in recent years include:
AC and DC withstand tests
lightning and switching impulse tests
capacitance / tan delta
partial discharge
thermal cycling (including for the validation of cable thermal models)
bending (transverse) and axial stiffness measurement
exploratory fatigue testing (through repeated bending cycles), including subsequent forensic inspection.
measurement of cable losses, including to determine measured losses in comparison to those obtained from IEC 60287
Where it becomes necessary to develop bespoke test programmes, or build new experimental rigs, our team are able to bring about the benefit of decades of accumulated experience to design an appropriate and cost-effective solution.
We also perform forensic investigation of cables and accessories that have failed in service – for more details please see forensics. This work has also been conducted for parties requiring an independent expert opinion.