The three-phase 75 m long HTS power cable

A 75 m, three-phase HTS power cable is successfully demonstrated in a distribution grid of Gansu Changtong Cable Science and Technology Joint Stock Co., Ltd. in northwest China. The HTS power cable operates at a local live distribution grid of 6.6 kV to supply electric power for Changtong’s factory in Baiyin, Gansu Province. The cable was rated for voltages up to 10.5 kV, and has conducted up to 1600 A at 400 V, which was limited only by the load available at Changtong’s factory. The critical current of cable was tested as high as 5300 A DC at 76 K. The cable was connected to a local distribution grid to supply the power for the workshops at Changtong’s factory. The cable operates stably and reliably over 5500 h since December 2004.