| 摘要 |
PURPOSE: A fire prevention device for a cable of electric power tunnel of an electric power-transmission line and a transformer substation are provided to allow a user to change a defect with new one since the device is knockdown structure. CONSTITUTION: A fire prevention device for a cable of electric power tunnel of an electric power-transmission line and a transformer substation are composed of an upper and a lower part cable firebreak(10,10a), a lower elastic fastening unit(20), and an upper elastic fastening unit(30). The upper and the lower part cable firebreak are separated up and down so that a hole(11) for receiving a cable is made between them. Both side support bars(12a) are formed at the center of the side of the firebreak. |
