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22A-A2P1N103
22A-A2P1N103
● 在变频器与电源中间加装外置 EMC 输入滤波器(见上上图所示)不仅可以抑制周围环境的电磁噪声对变频器的干扰,也可以防止变频器所产生的对周围设备的干扰。 需要在输入端外接滤波器才能使变频器满足安装中的 C2 类水平。
安装 EMC 输入滤波器需要注意: ① 使用滤波器时请严格按照额定值使用:由于滤波器属于丨类电器,滤波器金属外壳地应该大面积与安装柜金属地接触良好,且要求具有良好导电连续性,否则将有触电危险及严重影响 EMC 滤波的效果。 ② 滤波器地与变频器PE 端地接到同一公共地上,否则将严重影响 EMC 效果。 ③ 滤波器尽量靠近变频器的电源输入端安装。
● 无论是变频器的输入侧信号是模拟电压输入还是数字输入方式,它们对外部的电磁干扰特别敏感,所以一般需要采用屏蔽电缆线,而且配线距离尽量短,不要超过20米,另外在电磁干扰强的场所,模拟信号源则需要加装滤波电容器或铁氧体磁芯。
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MILLIPORE 10" FILTER CARTRIDGE, CTFA01P01
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