EN 60939-2-1-2004 抑制无线电干扰用整套滤波装置.第2-1部分:空白详细规范.抑制电磁干扰用无源过滤装置.安全试验所需的过滤器(评定等级D/DZ型)IEC 60939-2-1-2004;
Complete filter units for radio interference suppression Part 2-1: Blank detail specification Passive filter units for electromagnetic interference suppression Filters for which safety tests are required (assessment level D/DZ)