Housing Positioning Cable entry Brushes Executions Armonized rules Marking Technical Sheet Sliprings Type PRSMain Performances In aluminium Vertical axis To connect rings to the clamp, through the tube and to the brush-holders cable entry through the PG 21 20 A copper-graphite brushes / silver-graphite for signals, 30 A blade or copper-graphite and 50 A blade or copper-graphite From 6 to 15 rings 20 A, from 4 to 14 rings 30 A and from 4 to 10 rings 50 A EN 60947 - 5 - 1 EN 60529 2006/95/CE - 2004/108/CE - 2006/42/CE CE Electrical Features Nominal voltage Nominal current Protection degree Max rotating speed Test voltage Operating temperature 660 V ac-dc Ith 20 A - 30 A - 50 A IP 55 30 revs / min 2,5 kV - 20 °C -f + 60 °C Availability on demand: • Mixed versions with 20 A / 30 A / 50 A rings • Signal versions with gold or silver rings Type N° Rings Type N°Rings H=mm* For 30 A and 50 A executions, please omit the final “L” of the code if you need copper-graphite brushes Ravioli S.p.A. Via Passo Pordoi, 4 - 20139 Milano Tel. +39 02 53.63.01 - Fax +39 02 53.63.05 E-mail: [email protected] - www.raviolispa.com

The PRS slipring has to be installed only by qualified personnel in compliance with current safety standards. Power to the machine must be turned off before carrying out cabling. Connections are to be made in compliance with the wiring scheme of the controlled equipment. After installation has been completed, the installer is required to check that all commands are working properly. Avoid prolonged contact with oils and acids when using the equipment, as these may damage the products. 1) Using the locknuts (Ref. 11), attach the central pipe (Ref. 3) to a minimum 3 mm thick plate with a central...