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高压真空断路器开关设备

2014-1-3 8:20:18      点击:
高压真空断路器 开关设备介绍

“开关柜”是一种电设备,外线先进入柜内主控开关,然后进入分控开关,各分路按其需要设置。如仪表,自控,电动机磁力开关,各种交流接触器等,有的还设高压室与低压室开关柜,设有高压母线,如发电厂等,有的还设有为保主要设备的低周减载
分类

1、低压抽出式开关柜
2、交流低压
3、金属铠装移开式开关柜
4、低压固定分隔式开关柜
5、高压电容器柜
6、高压开关柜
7、中压真空环网柜
相关标准

SJ/T 31401-1994|高压开关柜完好要求和检查评定方法
DL/T 791-2001|户内交流充气式开关柜选用导则
DL 404-1991|户内交流高压开关柜订货技术条件
DL/T 404-1997|户内交流高压开关柜订货技术条件
DL/T 539-1993|户内交流高压开关柜和元部件 凝露及污秽试验技术条件
TB/T 2010-1987|27.5kV交流电气化铁道开关柜技术条件
DL/T 404-2005|户内交流高压开关柜订货技术条件
维护

对真空断路器应该每年进行一次停电检查维护,以保证正常运行。检查应做好如下方面的工作:
a)对管子进行断口工频耐压试验,测试真空度并记录在册。
b)对绝缘件进行工频耐压试验。
c)测试断路器的开距、接触行程和机械特性,并记录在册。
d)对各连接件的可调整处的连接螺栓、螺母等应检查是否有松动,特别是辅助开关拐臂处的连接小螺钉,真空管动导电杆连接的锁紧螺母等。
e)对各转动关节处应检查各种卡簧,销子等是否松脱;并对各转动、滑动部分加润滑油膏。
f)对使用在电流大于1 600 A以上的真空断路器,应对每极作直流电阻测试并记录在册。
g)如需更换管子应按产品说明书的要求进行,更换后应进行机械特性的测试和耐压试验。
h)年检后和投运前应连续空载操作8~10次,一切正常方可投运。[3]