World's longest 500kV AC submarine power cable with no factory joints

April 18, 2018 //By Nick Flaherty
World's longest 500kV AC submarine power cable with no factory joints
Hengtong High Voltage in China has made the world longest 500 kV AC submarine cable without factory joints at 18.15km.

The 500kV submarine cable system is part of a key power transmission project in theZhoushan, Zhejiang province in China, connecting offshore installations, Ningbo (a coastal city in Zhejiang province) and Zhoushan.

"The 500 kV XLPE submarine cable will be a crucial part of the power interconnectivity in the new development zone of the Zhoushan Archipelago," said Li Ziwei, chairman of Hengtong High Voltage. "We are extremely proud of our contribution to making 'made in China' a worldwide seal of quality and also about the success of our teams that designed a differentiating solution overcoming important technical challenges. This solution will support the development of the energy grid in Ningbo-Zhoushan areas"

Founded in 2009, Hengtong High Voltage is a member of Hengtong Optic-Electric  and has a number of R&D programmes on submarine power cable systems and submarine communication cable systems. In 2016 the company provided more than 200km of 220kV compound optical fibre cable for one single project for the state grid of Russia and has been part of national projects in Egypt, Turkey, Thailand, Malaysia, Sri Lanka and Venezuela.

www.hengtonggroup.com/en


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