点火保护类型是标准中定义的设计原则，适用于爆炸性环境中使用的设备。根据爆炸性环境(气体或粉尘)的类型，有多种点火保护类型。它们都旨在防止爆炸性环境和可能的点火源(例如电火花)相互接触。

　　原文：

　　Ignition protection types are design principles, defined in standards, for devices used in explosive atmospheres. Depending on the type of explosive atmosphere (gas or dust), there are various ignition protection types. They are all aimed at preventing an explosive atmosphere and a possible ignition source, such as an electric spark, from making contact with each other.