KRAUS & NAIMER Enclosures for EMC-compliant connection

EMC-compliant connection Maintenance Switches for Maintenance Switches and Safety Switches according to IEC 60204 and VDE 0113 for EMC-compliant connection of frequency regulated motors 2 www.krausnaimer.com CONTENT Please choose the suitable Maintenance Switch due to the power data of your projected drive from the table below. Nominal Rating: 3 pole Page 6 pole Page Thermal Current I the Motor Rating AC-23B/A, 3x400V 20 A 5,5 kW 3 - 25 A 7,5 kW 4 10 32 A 11 kW 4 10 40 A 15 kW 5 11 63 A 22 kW 5 11 80 A 30 kW 6 12 100 A 37 kW 6 12 125 A 45 kW 7 13 160 A 55 kW 7 13 200 A 75 kW - 14 250 A 90 kW 8 - 275 A 132 kW - 14 315 A 110 kW 8 - 315 A 132 kW 9 - UPGRADE KIT 15 Sales Contact 16 Note: Maintenance Switches for EMC- compliant connection of FU- regulated drives are available either with shield clips (KS- and KL-enclosure) or with clips mount- ed on DIN-rails (STM-enclosure). These clips are used to continue the cable shield circuit through the enclosure. The configuration of the Mainte- nance Switch between FU and motor allows the use as Discon- nector up to 400 Hz and as Load Switch at frequencies from 40 Hz to 100 Hz. Each Maintenance Switch has as standard 2 auxiliary contacts, 1 NC and 1 NO. Via the NO (20 ms leading) the FU can be switched off before the main contacts of the switch open. For the rating of the switch please note that the motor may have approx. 10 % higher charging rate due to the higher loss in FU-operation e.g. a motor with 7,5 kW rating the motor cur- rent has to be determined with 16,7 A instead of 15,2 A.