Kemppi WELDFORCE KPS 3500 Operation Instructions Manual

Also see for WELDFORCE KPS 3500: Service manual Operation instructions

Contents

8 – KEMPPI WELDFORCE KPS3500 / 0520 © KEMPPI OYSizes of the mains cables and fuse ratings for the machine at 100 % duty cycle are specified inthe table below:*) In cables of S type there is a protective grounding conductor coloured green-yellow.2.3. WELDING AND EARTH CABLESRecommended copper cables with cross-sectional area is 50...70 mm² (1/0...2/0 AWG) in KemppiWeldForce KPS 3500.In enclosed table are shown typical load capacities of rubber insulated copper cables, when ambienttemperature is 25 ºC (77 ºF) and lead temperature is 85ºC (185 ºF).Do not overload welding cables due to voltage losses and heating.Fasten the earth clamp of the return current cable carefully, preferably direct onto the piece to bewelded. The contact surface of the earth clamp should always be as large as possible.Clean the fastening surface from paint and rust.3. OPERATION CONTROL SWITCHES ANDPOTENTIOMETERS AND THEIR USE3.1. MAIN SWITCH I/OWhen you turn the switch into I-position, pilot lamp H11 on the front face is illuminated and themachine is ready for use.Always turn the machine on and off with the mains switch, never use the mains plugsas a switch.3.2. PILOT LAMPSThe pilot lamps of the machine report the electric operation:The green pilot lamp H11 when lit indicates that the machine is on and ready for use and it isconnected to the mains supply with the main switch in the I-position.H12 indicates when lit that the thermal protection of the machine has been activated due to overheating. The cooling fan will continue to run and cool the machine down and when the lamp isoff the machine is ready to weld.Rated voltage Mains voltagerangeFuses,slow-blowConnection cable *)mm² (AWG)KPS3500 480 V 3~ 430 V… 530 V 25 A 4 x 6.0 (10) SCABLE DUTY CYCLE ED VOLTAGE LOSS/10 m (32.8 ft)100% 60% 30%50 mm² (1/0 AWG) 285 A 370 A 520 A 0,35 V / 100 A70 mm² (2/0 AWG) 355 A 460 A 650 A 0,25 V / 100 A95 mm² (3/0 AWG) 430 A 560 A 790 A 0,18 V / 100 A