P0916MZ FOXBORO

EL3020 ABB

PP877K ABB

PM866 ABB

DS200DCFBG1BNC GE

43518(版本号BUTLD275) TRICON

4351B TRICONEX

5301-MBP-DECN PROSOFT

NC154.60-2 B&R

Description

无论是在型式试验时,还是在平时设备检查调试中都曾有真空断路器的真空灭弧室的动触头不在一条轴心上的现象。根据通用技术条件中的一般结构要求,厂家在真空灭弧室上应有能反映触头磨损程度的指示标记,并在真空断路器的机械特性和机械参数中,提出动、静触头允许磨损累计厚度的要求,但是,在整个规定中,没有对动、静触头的轴心线的一致性作出规定,而在事实上.因为端盖孔的加工或组装时的误差,致使动、静触头出现偏心,甚至倾斜的现象是比较危险的

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