Introduction Accurate definition and measurement of critical electrical performance parameters is essential for ensuring the reliability and safety of high-voltage equipment and cabling. For applications which can involve tens of thousands of volts, safety risks are high, as are the demands on the test equipment used to measure the equipment and cables. Proper calibration of the test instruments themselves is critical to achieving the strict performance needs of many equipment types. Calibration results must often meet national and international specific standards and calibration measurements are typically conducted by certified laboratories with traceability to national standards, like [...]