Electrical engineering; earth, protective conductor, noisless earth; frame or chassis, class II equipment; graphical symbols on electrical equipment— 7 стр.
Special sockets for use in film and television studios; two-pole special sockets with earthing contact, <Wechselstrom> 250 V 25 A and <Wechselstrom> 250 V 63 A— 5 стр.
Special female sockets for connecting cables and switchboards for motion-picture and television studio use; two-pole special socket with protective contact, <Wechselstrom>250 V 25 A and <Wechselstrom>250 V 63 A— 4 стр.