IP等級是一種標準化的方法,用於衡量外殼對異物(如灰塵、濕氣和意外接觸)的防護效果。這些等級由國際標準EN 60529(英國BS EN 60529:1992和歐洲IEC 60509:1989)所規範,提供了外殼對固體和液體的防護能力的明確指示。
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