| 摘要 |
PURPOSE:To deal with double fault flexibly by installing a distribution line directly connected to each load from a power supply and a distribution line connected to another distribution line through another load facility between load facilities. CONSTITUTION:When a fault is generated in a distribution line 6B and the supply of electricity to a load facility 9B is interrupted by the opening of a protective switching device 2B, the load facility 9B can be supplied with electricity through a protective switching device 2E, a distribution line 7B and a protective switching device 2G from the load facility 9A side. When the distribution line 7B cannot be used by a fault, the load facility 9B can be supplied with electricity through a protective switching device 2K, a distribution line 7C and a protective switching device 2I from the load facility 9C side. Accordingly, all load facilities 9A, 9B and 9C can be supplied with power even when two distribution lines between power supply and load can not be used. |
