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Author: 趋势捕手

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What are the requirements for rain and sun protection for outdoor power distribution cabinets?

户外配电柜防雨防晒要求有哪些?六项:防护等级(IP54~IP65防水防尘)、柜体材质(不锈钢沿海/镀锌板常规)、防雨结构(雨檐/密封条)、防晒隔热(遮阳棚/隔热层)、温控散热(风扇+温控器)、防腐处理(喷塑/热镀锌)。按环境选材质。

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How to Select Explosion-Proof Ratings for Electrical Equipment

电力设备防爆等级怎么选?四步:危险区域(0/1/2区按GB 3836.14)→爆炸性物质(气体IIA/IIB/IIC、粉尘III类)→设备类别(I矿用/II工厂/III粉尘)→防爆型式(隔爆d/增安e/本安i)。Ex标志防爆合格证核验,区域分级是基础。

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What are the lightning protection and grounding requirements for complete electrical assemblies?

电气成套组件防雷接地要求有哪些?六项:接地系统(TN-S等)、接地电阻(≤4Ω常规/≤1Ω防雷)、等电位连接(柜体/门/框架)、防雷保护(SPD浪涌)、接地导体(铜排截面)、验收检测(电阻测量)。按GB 50057/GB/T 50065执行。

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