| 摘要 |
Utilization as electrical insulator (16) of a glass-ceramic material made from blast furnace slag. The material has a content of a CaO which exceeds or is equal to 10 per cent by weight preferably amounting to approximately 22 per cent by weight, and contains also substances with the approximative values in per cent by weight stated hereinafter: 57 % SiO 6 % Al<u2>uO<u3>u 2,6% MgO 0,2% FeO 0,05% MnO 0,1% TiO<u2>u 0,2% S 0,01% P<u2>uO<u5>u 1,7% Na<u2>uO 5,0% K<u2>uO The electrical insulator constitutes a pin insulator (16) in a gas-insulated tube cable or tube capsule (10, 12) intended for high voltage. |
