20 kV submarine fiber optic cable for intercontinental telecommunications.ZTT offers a comprehensive range of repeatered submarine optical cables certified by the UJC Alliance UJ certification. These systems feature a maximum working voltage of 20kV, support up to 96 fiber cores, and operate at depths reaching 8,000 meters. Engineered for transoceanic applications, they deliver long-distance, low-loss, high-speed connectivity for repeatered systems and submarine observation networks.