Kemppi FastMig KM300 Operating Manual

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Kemppi FastMig KM300 Operating Manual Manual pdf 10 page image

The table below lists the fuse sizes for 100% load in a 400-V three-phase network with4 x 10-mm² cable for different power source models.Model FuseKM 300 20 A delayedKM 400 25 A delayedKM 500 35 A delayed2.3 WelDing anD earthing CablesThe device has a welding cable connection both in the front and in the rear. The positions ofthe welding and earthing cable connections are shown earlier in section 'Introduction'.The welding cable type to be used is rubber-insulated copper cable. The recommended cross-sections of the cables for different power source models are as follows:Model Cross-sectionKM 300 50…70 mm²KM 400 70…90 mm²KM 500 70…90 mm²The table below shows the typical load capacities of the cables when the ambienttemperature is 25 °C and the lead temperature is 85 °C.Cable Duty cycle (ED) Voltage loss / 10 m100 % 60 % 35 % 20 %50 mm² 285 A 316 A 371 A 458 A 0,35 V / 100 A70 mm² 355 A 403 A 482 A 602 A 0,25 V / 100 A95 mm² 430 A 498 A 606 A 765 A 0,18 V / 100 A120 mm² 500 A 587 A 721 A 917 A 0,21 V / 100 ANOTE! Do not overload the welding cables, as an overload may cause voltage loss andoverheating.Connect the earth clamp directly to the work piece in such a way as to maximise the contactsurface of the clamp. The point of connection must be unpainted and free of corrosion.3. MaChine use3.1 starting OF the pOWer sOurCeStart the power source by turning the main switch (A2) on the front panel to the ‘I’ position.The standby indicator (A3) turns on. The control panel and wire feeder are not operational yet,and the text ‘OFF’ is shown on the control panel display.NOTE! Always turn the device on and off using the main switch, not via the mains socket.The cooling fan is started for a moment when the main switch is turned to the ‘I’ position. Thefan turns off after a while and then restarts during welding when the machine has warmed upsufficiently. The fan continues running even after up to 10 minutes of welding, depending onthe temperature of the machine.EN8FastMig KM 300, 400, 500 / © Kemppi Oy / 0901FISVNODAENDENLFRESPLRU