作废 JB/T 9300-1999
精密仪器用开关 精密仪器用开关 Switch for precise instrument
发布日期:1999-08-06
实施日期:2000-01-01
分类信息
标准简介

本标准规定了“精密仪器用开关”的技术要求、试验方法、检验规则及包装等。 本标准适用于最高工作电压为lkV,最大工作电流20A的交、直流精密仪器中作为改变示值或量程等所使用的多点旋转式开关。交流用开关使用频率范围为50Hz~10OkHz

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最后更新时间 2025-08-30