DIN 40011:1989-08 Electrical engineering; earth, protective conductor, noisless earth; frame or chassis, class II equipment; graphical symbols on electrical equipment
标准编号:DIN 40011:1989-08
英文标题:Electrical engineering; earth, protective conductor, noisless earth; frame or chassis, class II equipment; graphical symbols on electrical equipment
德文标题:Elektrotechnik; Erde, Schutzleiter, Fremdspannungsarme Erde; Masse, Schutzisolierung; Kennzeichnung an Betriebsmitteln
发布日期:1989-08
标准预览图


