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变频器应安装在室内通风良好的场所一般
应垂直安装
选择安装环境时应注意以下事项
环境温度要求在-10 40 的范围内如温度
超过40 时需采取散热措施或者降额使用
湿度要求低于95 无水珠凝结
安装在振动小于5.9米/秒2 0.6g 的场所
避免安装在阳光直射的场所
避免安装在多尘埃金属粉末的场所
严禁安装在有腐蚀性爆炸性气体场所
如有特殊安装要求请事先咨询和确认
安装间隔及距离要求如图3-1所示多台变频
器的安装如图3-2所示当两台变频器采用上下安装
时中间应用导流隔板如图3-3所示
3.1.1 符合EMC要求的安装方法
在变频器与电机构成的传动系统中如果变频
器控制装置传感器装在一台柜子里其对外发
射的噪声要在主连接点上被限制因而柜中要安装
噪声滤波器和进线电抗器柜内也应满足电磁兼容
要求
变频器的工作原理决定了变频器对外电磁干
扰不可避免变频器一般装在金属柜中对于金属
柜外面的仪器设备受变频器本身的辐射发射影响
很小对外连接电缆是主要辐射发射源依照本章
所述的电缆要求接线可以有效抑制电缆的辐射发
射
在机械/系统设计阶段考虑在空间上隔离噪声
源并使用噪声吸收器是减少干扰最有效的措施
但成本较高如果现场只有个别敏感设备单独在
敏感设备侧安装电源滤波器可降低成本变频器
与电机构成的传动系统中变频器接触器等都可
以是噪声源自动化装置编码器和传感器等易受
噪声干扰
将机械/系统根据电气特性分成不同EMC区
域推荐将装置放置在如图3-4所划分的区域内

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