On November 7, 2020, the "500kV XLPE insulated power cable system" jointly developed by Zhongtian Technology Submarine Cable Co., Ltd [ZTT Submarine] and Jiangsu Zhongtian Technology Co., Ltd [ZTT] was proven in the appraisal of new technological products organized by China Electricity Council. The experts unanimously affirmed that the technology of the product hit an internationally leading level.

ZTT Submarine, the design-and-develop team, expertly extends the core R&D technology and process control of high-voltage submarine cable system. It involves a large section, great length, and high-water resistance to the onshore power cable system, all in the process of research and development of ultra-high voltage and long-length power cables. The entire technical breakthroughs have made possible the purity of materials, large-length insulation extrusion technology, degassing technology, corrugated aluminum sheath structure, and other salient aspects. ZTT Submarine successfully developed the 500kV 3000mm2 large section cables and is the first of such developers worldwide. ZTT passed the type test and pre-qualification test at a single attempt.

The stage of the bespoke 500kV, extra-high voltage power cable represents a state-of-the-art technical level in the cable industry. Currently, this developed 500kV voltage level suggests a cutting-edge voltage level of urban power grid put into large energy operation worldwide. ZTT Submarine can provide 500kV large-section cable in 3000 mm2 with a maximum length of 1350m according to the customer requirements. This success implies the company's technology is at the pinnacle position and serves to guide domestic and overseas high-voltage cables development.

In the technological front, ZTT Submarine will persistently stress to adhere to the development concept with technological innovation driven by the market demand, constantly introduce high-end talents and technical equipment, implement innovation facilitation, lead the progress of the industry, provide the most reliable products to customers, to connect wonderful life with an optic-electric network!