| 避雷器安装存在问题及处理 |
| 添加时间：2017/5/16 16:45:01 浏览次数： |
| 避雷器一般安装在高压熔丝上侧，按规程规定：“变台底座离地面高度不得小于2.5m。”这样在避雷器损坏或造成接地、短路、校验更换时，需要整条10kV线路停电，且不利于装、拆。另外，避雷器的接地引线离地面过长，不符合有关技术要求。 The lightning arrestor is installed on the upper side of the high pressure fuse, and according to the regulation, "the base of the change platform is not less than 2.5 m." This way, when the lightning protector is damaged or caused to ground, short circuit, and check replacement, the whole 10kV circuit is not to be installed and dismantled. In addition, the ground leads of the lightning arrester are too long from the ground and do not meet the technical requirements. 鉴于以上问题，我们对配变避雷器的安装位置进行了改变，把它安装在了高压熔丝的下侧。这样既不影响避雷器的保护效果和范围，又有利于避雷器的正常装拆，减少了全线路停电的次数。同时，当避雷器性能下降遭雷电后，通过工频续流增加，必然导致避雷器自身故障，配变熔丝熔断，起到隔离故障点的作用，减少线路单相接地或短路跳闸的机会，提高供电可靠率。 In view of the above problem, we changed the installation position of the distribution arrester and installed it on the lower side of the high pressure fuse. This does not affect the protection effect and scope of the lightning arrester, it is helpful for the normal packing of the lightning arrester, and reduces the number of power failures of the whole line. At the same time, after the lightning arrester performance degradation was thunder and lightning, through continued flow increase power frequency, inevitably resulting in failure of lightning arrester itself, with getting blown fuse, have the effect of isolation point of failure, decreases the chance of single-phase grounding or short circuit trip line, to achieve high reliability of power supply. |
| 上一页 避雷器预防性试验方法 |
| 下一页 线路型避雷器定义 |
Copyright © 技术支持：遨游网络