The 400-kV three-core submarine cable was designed with 1400-sq-mm (2.17-sq-inch) aluminum conductors and the 400-kV AC single-core underground cables with 1200-sq-mm (1.86-sq-inch) aluminum ...

Underground electrical cable systems ... value. In addition, three specimens from the inner 25% of the cable insulation must now be tested rather than just one. Furthermore, one of those specimens ...

KEPCO currently uses the tan δ method for underground cable with a VLF test voltage at a frequency of 0.1 Hz. This test measures and analyses eight tan δ values at three voltage steps for a period of ...