LOKERMANN GRAND MIG 160, Руководство пользователя

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2
Overview
2.1
Brief
Introduction
GRAND MIG 160 adopts the latest Pulse Width Modulation (PWM) technology and the Insulated Gate
Bipolar Transistor (IGBT) power modules. It uses switching frequencies in the 20KHz-50KHz range so as
to replace the traditional line-frequency transformer type welding machines. Thus, machines are
characterized with excellent dynamic response, portability, small size, lightweight, low energy
consumption, etc.
GRAND MIG 160 uses Mix gases as shielding gas to realize gas shielded welding, active gas
（ Ar+O2 、 Ar+CO2 ） as shielded gas to realize MAG welding and inactive gas （ Ar ） as shielded gas to
realize MIG welding.
GRAND MIG 160 has built-in automatic protection functions to protect the machines from
over-voltage, over-current and over-heat. If any one of the above problems happens, the alarm
lamp on the front panel will be lit and output current will be shut off automatically for the machine to
protect itself and prolong the equipment using life.
GRAND MIG 160 Features:
1. Digital control system, real-time display the welding parameters;
2. High performance multifunction power source (MIG/MAG);
3. Waveform control, stable welding arc;
4. IGBT technology, low power consumption;
5. Rated Duty Cycle ：
GRAND MIG 160 = 160A @ 25%(40°C)
GRAND MIG 160 is suitable for all positions welding for various plates made of stainless steel, carbon
steel,alloyed steel etc. Applications applied to pipe installment, petrochemical, architecture
equipment, car repair, bicycle repair, handicraft and common steel fabrication.
MAG--Metal Active Gas Welding
MIG--Metal Insert Gas Welding
2.2
Working
Principle The working principle of MIG series arc welding machine is shown as the following figure.
Single-phase 220V work frequency AC is rectified into DC�312V�, then is converted to medium
frequency AC (about 50KHz) by inverter device (IGBT), after reducing voltage by medium
transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery
diodes), and is outputted by inductance filtering. When MIG. Meanwhile, the welding current
parameter can be adjusted continuously and infinitely to meet with the requirements of welding craft.
single-phase
AC
220V 50/60 HZ