摘要 |
PURPOSE:To prevent flowing-out of an insulator at a fire and the destruction by fire by inserting a film made of a heat resistant organic material between the insulator and an outer conductor as specified. CONSTITUTION:The outer conductor 6 having an insulator 2 and a slot 7 and a protection sheath 8 are wound on an inner conductor 1 sequentially. The heat resistant film 5 made of a heat resistant organic material is inserted between the insulator 2 and the outer conductor 6. The film 5 is formed with a longitudinal reinforcement so as to surround the insulator 2 and so that both ridges 12,13 of the film 5 in surrounding the insulator 2 are placed upward in installing the cable. Thus, the flowing-out of the molten insulator from gaps of both the ridges 12,13 is prevented. Thus, the destruction of the insulator by a fire is prevented. |