SWEISS
WELD.COM
info@sweissweld.com
SUMMARY
5
§2 Summary
This operation manual is suitable for the models of
SKY
ARC
27
50
§2.1 Brief Introduction
SKY
ARC
- serires
（
discrete
）
welder is a MMA arc welder which adopts the latest pulse
width modulation (PWM) technology and the insulated gate bipolar transistor (IGBT) power
module. It can change work frequency to medium frequency so as to replace the traditional
hulking work frequency transformer with the cabinet medium frequency transformer. Thus, it is
characterized with portable, small size, light weight, low consumption and etc.
SKYARC - serires
（
discrete
）
has excellent performance: constant current output makes
welding arc more stable; fast dynamic response speed reduces the impact from the arc length
fluctuation to the current; accurate stepless current adjustment and pre-setting function. There
are also some automatic protection functions for under voltage, over current, over heat, etc.
inside the welders, when the problems listed before occurred, the alarm on the front panel is
light and at the same time the output current will be cut off. It can self-protect and prolong the
using life and greatly improved the reliability and practicability of the welders.
For SKYARC - serires
（
discrete
）
, welding current, arc force and hot start can be adjusted by
the adjustment knob, which can satisfy with several kinds of welding technologies. They can
also realize high quality welding especially for using basic electrode, acid electrode and
cellulose electrode. When using cellulose electrode, they can also realize downward welding
for butt joint in all position.
SKYARC - serires
（
discrete
）
is widely used in Petroleum, chemical, mechanical,
shipbuilding, architecture, boiler, pressure container, war industry and installation and so on.
MMA——Manual Metal Arc welding;
PWM——Pulse-Width Modulation;
IGBT——Insulation Gate Bipolar Transistor
§2.2 Model explanation
The model explanation of arc welding machine accords with the correlative prescripts of
National Standard GB10249, and is as follows.(Take SKYARC as an example)
