SWEISS
WELD.COM
info@sweissweld.com
SUMMARY
§2.2 Working Principle
The working principle of SKYARC One FX / 2050 ULTRA POWER welder is shown as the
following figure. Single phase
110V 220V±10%
work frequency (50/60 Hz) AC is rectified into DC,
then by ULTRA POWER circuit,
－
DC(about 370V)is converted to medium
frequency AC (about 20KHz) by inverter device (IGBT module), after reducing voltage by
medium transformer (the main transformer) and rectified by medium frequency rectifier (fast
recovery diodes), and is outputted by inductance filtering. The circuit adopts current feedback
control technology to insure current output stably. Meanwhile, the welding current parameter
can be adjusted continuously and steplessly to meet with the requirements of welding craft.
§2.3 Volt-Ampere Characteristic
SKYARC One FX / 2050 welders have excellent volt-ampere characteristic, seeing
the following graph. In MMA welding, the relation between the rated loading voltage U
2
and welding current I
2
is as follows:
When I
2
≤
600A
，
U
2
＝
20
＋
0.04 I
2
（
V
）；
When I
2
＞
600A
，
U
2
＝
44
（
V
）
.
U
2
V
（
44
Volt-ampere characteristic
64
）
Working
The relation of the rated loading
voltage&welding current
point
20
0
600
I
2
A
7
（
）
