用于电磁干扰抑制的被动滤波单元 - 第3部分:适用于哪些安全测试的被动滤波单元

[中文适用范围]： 该规范涵盖用于衰减电磁源产生的不需要的射频信号（例如噪声或干扰）的无源滤波器。一个外壳内的单通道滤波器和多通道滤波器或者构建在形成紧凑实体的印刷电路板上的单通道滤波器和多通道滤波器都包括在本规范的范围内。由电容元件构成的滤波器（其中电感是滤波器结构中固有的）在本规范的范围内。类似地，由电感元件构造的滤波器（其中电容是滤波器构造中固有的）也在本规范的范围内。由制造商决定是否将给定组件设计为电容器、电感器或滤波器。滤波器还可以包括其他组件，例如电阻器和/或变阻器或类似组件。本规范适用于用于抑制电磁干扰的无源滤波器单元，其安全测试是适当的。这意味着根据本规范指定的滤波器将连接到主电源@当需要遵守表3的强制性测试时@或用于设备规范规定需要部分或全部这些安全测试的其他电路位置。本规范适用于无源滤波器单元@，它将连接到交流电源或其他电源（直流或交流），标称电压不超过 1 000 V 交流@，标称频率不超过 400 Hz@ 或 1 500 V 直流 注对于交流使用@ IEC 60384-14 适用于连接到标称频率不超过 100 Hz 的交流电源的电容器。本规范涵盖电器过滤器（美国），但不涵盖设施过滤器@有线连接过滤器或直接插入式过滤器。这些其他过滤器将由另一个部分规范涵盖。 [外文原描述]： IEC 60939-3:2015 covers passive filters used to attenuate unwanted radio-frequency signals (such as noise or interference) generated from electromagnetic sources. Both single and multi-channel filters within one enclosure or which are built on a printed circuit board forming a compact entity are included within the scope of this specification. This specification applies to passive filter units for electromagnetic interference suppression for which safety tests are appropriate. This implies that filters specified according to this specification will either be connected to mains supplies, when compliance with the mandatory tests of Table 3 is necessary, or used in other circuit positions where the equipment specification prescribes that some or all of these safety tests are required. This specification applies to passive filter units, which will be connected to an a.c. mains or other supply (d.c. or a.c.) with a nominal voltage not exceeding 1 000 V a.c., with a nominal frequency not exceeding 400 Hz, or 1 500 V d.c. The contents of the corrigendum of April 2016 and May 2018 have been included in this copy.