... zero-sequence CT is a kind of cable type, using ABS engineering plastics as casing, poured by resin. With beautiful appearance, good hermeticness, high ... , unground,ground by high-resistance,low resistance or arc suprression coil.)MRD-L series zero-sequence CT core is made of ... (select site cable and inner diameter of zero-sequence CT), See table1Table1 0-sequence CT Spec.Cable Section(mm2)φ803×50 and ...