防护等级IP：I防尘，1-6；P防水，0-8
三防：防尘、防水、防腐蚀
防爆：视工程性质而定。例如ExdIIBT6，适应场所（爆炸性气体危险场所：1区、2区；可燃性气体、蒸汽级别：IIA、IIB；表面温度组别：T1—T6；IP防护等级按用户要求达到IP65、IP66。）
防触电保护分类：
I类，易导电部件接地线；
II类，无接地，靠基本绝缘+双重绝缘或加强绝缘；
III类，低压电源，灯具内部不产生高于SELF 36V的低电压
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