The XZF series is composed of high-voltage cable testers from YangZhou Power Electric. They are a variable frequency resonant system that provides tests in long HV cables/GIL, short HV cables/GIS or GIL and long MV cables. The testers are specifically designed for the generation of alternating current high voltages caused by resonant circuits that have changing frequencies.
An outdoor design for these testers is available. For their application, they can measure partial discharges.