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高压真空断路器的检修项目与质量标准

2013/12/12 12:34:55      点击:
高压真空断路器的检修项目与质量标准:
1、清扫各部件,检查紧固各部件的螺栓
 ① 各部件应无油污、无锈蚀、无变形及严重磨损痕迹 ② 各紧固螺栓、垫片、弹簧垫圈齐全弹簧垫圈压紧压平,开口销子开口良好,挡卡应无脱落
2、检查支持绝缘子、绝缘拉杆、压敏电阻和接地线
① 绝缘子、绝缘拉杆、压敏电阻表面应清洁、无油污 ②、 绝缘子、绝缘拉杆、压敏电阻无损伤无放电现象 ③、 接地良好
3、检查真空灭弧室及其导电连接
① 真空灭弧室无损伤表面应清洁、无灰尘、无油污,抽真空封口的;っ庇ν暾匏啥崖湎窒 ②、 灭弧室导向套的装配应保证导电杆和静导电杆的同轴度要求 ③、 真空灭弧室上、下导电板连接时,不应产生过大的应力,以防灭弧室所受应力过大而破损 ④、 真空灭弧室导电杆导电夹连接应紧密导电夹固定后应保证其一侧有不小于1mm的间隙⑤ 软连接表面齐整、无毛刺,表面缝隙无油垢,断裂根数不能超过总根数的5,且断裂处应焊锡焊牢 ⑥、 各导电连接面均涂上中性凡士林或导电膏 ⑦、 所有导电连接处不应有过热现象
4、检查调整操动结构。
①各部件应无变形、磨损现象,弹簧无锈蚀、裂纹、断裂及弹簧力不足等不良情况,连接传动件的轴孔配合良好,转动灵活并应加上润滑油,脂②、 分、合闸线圈铜套应清洁无油污、无变形现象,分、合闸电磁铁的铁心动作应灵活无卡涩现象③、 分、合闸铁心推,拉,杆的伸出长度及分、合闸限位螺钉应调整正确符合制造厂规定④、 各部调整间隙应符合制造厂规定 ⑤、 油缓冲器动作灵活、无卡涩现象、无渗油现象 ⑥、 操作结构组装完毕应进行分合闸试验,做到连续电动10次分、合闸无误动无拒动,合闸过程中无空合、跳跃现象后方可进行组装真空灭弧室的工作
5、检查辅助开关、微动开关和二次回路。
① 辅助开关和微动开关弹簧无锈蚀、断裂及弹力不足等现象接点无油垢、无严重灼伤接触良好可靠 ②、 辅助开关、微动开关应能可靠切换电路转动灵活无卡阻现象 ③、 二次回路接线螺栓应紧固无氧化、锈蚀 ④、 二次插头座无变形、烧伤插头接触良好可靠 ⑤、 二次回路绝缘电阻不小于1MΩ用500V或1000兆欧表
6、短路器的预防性试验.
应符合?电力设备预防性试验规程?DL/596-1996,中有关规定
7、过电压吸收装置的预防性试验。
①、 压敏电阻的预防性试验应符合?电力设备预防性试验规程?DL/596-1996中有关规定 ②、 阻容吸收装置的测试应符合制造厂的规定
8、真空灭弧室的真空度检查
无专用仪器时可用在真空灭弧室断口间施加工频电压的方法代替,12kV真空灭弧室动静触头达到制造厂规定值,在断口间施加42kV工频电压1min应无闪络和击穿现象
9、真空灭弧室触头消耗程度的检查。
超行程应符合制造厂的规定。当超行程累计减少值超过制造厂时应更换真空灭弧室
10、继电;ち匝。
继电;ざ魇,断路器动作正常,无误动、拒动等现象。
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