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由于在粉尘大气及可燃性气体、蒸气等危险性的大气中关于电气设备的使用,现在最有效的许多捷克标准为,要求利用适当的收集容器来防止粉尘的侵入以保护电气设备。
Due to the use of electrical equipment in dusty atmospheres and hazardous atmospheres such as flammable gases and vapors, many of the most effective Czech standards nowadays require the use of suitable collection containers to prevent intrusion of dust to protect electrical equipment.