SAFETY
Power line, Signal transmission line and Date transmission line
Date processing equipment and telecommunication equipment
Inspection and calibration device
The effective measures avoid the problem of EMC：
a) Power source
Even though the power source connection meet rules, we still need to take additional
measure to remove the electromagnetic interference. (eg: Use the right power filter. )
b) The welding line
Try to shorten the length of cable
Put the cable together
Be Far away from other cable
c) Equipotential connection
d) Ground connection of work-piece
When necessary, use appropriate capacitance to connect the ground.
e) Shielding, when necessary
Shield the ambient devices
Shield the whole welding machine
§2 Overview
§2.1 Brief Introduction
MIG series of welding machines 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.
MIG series of welding machines uses Mix gases as shielding gas to realize gas shielded welding,
active gas（Ar+O
2
、Ar+CO
2
） as shielded gas to realize MAG welding and inactive gas（Ar）as
shielded gas to realize MIG welding.
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