Kemppi FastMig X 450 Operating Manual

Also see for FastMig X 450: Quick guide Quick guide Service manual

EN2.5.5 CablesKemppi always recommend the use of high quality copper cables with a suitable cross-sectional area. Cable size should be selected depending on the intended welding application.50 mm² copper cables may be used for low duty work in basic or synergic 1-MIG. However,using pulsed MIG/MAG process, longer cables, or higher welding power increase the voltageloss, and therefore smaller cross sectional interconnection cables and earth return cables willrestrict the welding performance of your machine.Recommended cross-sectional area of FastMig X 450 cables: 70 – 90 mm².The enclosed table shows typical load capacities and voltage loss values of rubber insulatedcopper cables for duty cycles 100%, 60% and 30%, when ambient temperature is 25 °C andthe cable temperature is 85 °C.Cable size 100 % 60 % 30 % Voltage loss / 10 m50 mm² 285 A 370 A 520 A 0.35 V / 100 A70 mm² 355 A 460 A 650 A 0.25 V / 100 A95 mm² 430 A 560 A 790 A 0.18 V / 100 ADo not overload the cables due to voltage losses and heating.NOTE! Always check the serviceability of the earth return cable and clamp. Ensure the metalsurface to which the cable is connected is clean from metal oxide or paint. Check the connector tothe power source is fastened correctly.2.5.6 Interconnection with wire feederKemppi provide a choice of interconnection cable sets for different environments. Onlymaterials that meet the demands of Kemppi's international markets are used in theirconstruction.Used correctly, Kemppi cable sets ensure high welding performance and serviceability.Before use, always ensure the cable set is in good condition and that connectors are correctlyfastened. Loose connections reduce welding performance and may result in damage toconnectors due to heating effects.For correct connection and configuration of cable sets, please refer to schematic drawings insection 2.5 of this manual.NOTE! FastMig X 450 power sources are designed to be used with MXF and MXP wire feed units.9© Kemppi Oy / 1312