Water-Blocking in 400 mm2 Stranded Conductors: Grams per Metre and the Swell Test
Water travelled 62 metres down a 400 mm2 stranded aluminium conductor before a utility opened a joint and found it. The cable had passed a sheath integrity test, the joints had been made to procedure, and the fault only surfaced when a 33 kV circuit failed twice in one winter. The strands were dry a…
