Igwe ọkụ dị elu na-ezokarị aka na ahịrị nnyefe na-ebu voltaji karịa 10kV. Dị ka GB/T si kwuo 2900.50-2008, nkọwa 2.1, elu voltaji…
high-voltage cables The current underground cables are generally of lower voltage level, and the line transmission with high voltage level…