Kemppi fastmig kms 400 mvu Operating Instructions Manual

Contents

Fastmig™ Kms 400 mVU / 0647 – 7© Kemppi oySizes of the mains cables and fuse ratings for the KMS 400 MVU machine at 100 % duty cycleare specified in the 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 are as follows:FastMig™ KMS 400 MVU 70 ... 90 mm²In enclosed table are shown typical load capacities of rubber insulated copper cables, when ambienttemperature is 25 ºC and lead temperature is 85 ºC.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.3.3. OPERATION OF COOLING FANIn FastMig™ -power sources there are two simultaneously operating fans.– The fan is started for a moment when main switch is placed into position I.– The fan will start during welding as the machine heats up and it will run for 1 to 10 minutesafter the welding has stopped.Rated voltage Fuses, slow-blow Connection cable *) mm²400 v 3~ 35 a h07rn-f 4g10 (10 mm²)230 v 3~ 50 a h07rn-f 4g10 (10 mm²)Cable duty cycle Ed Voltage loss / 10 m100 % 60 % 30 %50 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 a