标准摘要
[中文适用范围]： 指定这些开关的单孔和三孔安装值，用于标称 28 V 直流和 115/200 V 三相、400 Hz 交流系统。 与仅在杠杆入口处密封的 2 类开关相比，它们是环境密封的，适用于更高的海拔和温度条件。 它们不具备 ISO 1466 中规定的 1 类和 2 类开关的正作用功能。 [外文原描述]： Specifies the values for single- and triple-hole mounting of these switches for use in nominal 28 V d. c. and 115/200 V three-phase, 400 Hz a. c. systems. They are environmentally sealed and suitable for higher altitude and temperature conditions than are Class 2 switches which are sealed only at the lever entry. They do not have the positive action features of the Class 1 and Class 2 switches specified in ISO 1466.
英文名称Aircraft — Lever-operated manual switches (Class 3) — Performance requirements