Stealth DIGI-ARC 160PFC MV, Руководство оператора

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STEALTH DIGI-ARC 160PFC MV
2.2 Working Principle
The working principle of the DIGI-ARC 160PFC welding machines is shown as follows:
Single phase work frequency 110/220V (50/60 Hz) is converted to DC, then by PFC
circuit DC (approx. 155/312V), then is converted to medium frequency AC (approx
50/40KHz) by inverter device (IGBT). After reducing voltage by medium transformer
(the main transformer) and rectifying by medium frequency rectifier (fast recovery
diode). The circuit adopts current feedback control technology to ensure a stable
current output. Meanwhile, the welding current parameter can be adjusted
continuously and steplessly to meet with the requirements of the welding craft.
2.3 Volt-Ampere Characteristic
The DIGI-ARC 160PFC welding machine has an excellent volt-ampere characteristic,
as shown as the following graph. In MMA welding the relation between the rated
loading voltage U
2
and the conventional 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).
9
SUMMARY
6
§2.2 Working Principle
The working principle of ARC160/200 PFC MV welder is shown as the following figure.
Single phase 110V/220Vwork frequency (50/60 Hz) AC is rectified into DC, then by PFC circuit,
DC(about155/312V)is converted to medium frequency AC (about 50/40KHz) by inverter device
(IGBT module), after reducing voltage by medium transformer (the main transformer) and
rectified by medium frequency rectifier (fast recovery diodes), 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
ARC160/200 PFC MV 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
） .
64
44
20
0 600 I
2
（
A
）
U
2
（
V
）
Working
point
Volt-ampere characteristic
The relation of the rated loading
voltage&welding current
SUMMARY
6
§2.2 Working Principle
The working principle of ARC160/200 PFC MV welder is shown as the following figure.
Single phase 110V/220Vwork frequency (50/60 Hz) AC is rectified into DC, then by PFC circuit,
DC(about155/312V)is converted to medium frequency AC (about 50/40KHz) by inverter device
(IGBT module), after reducing voltage by medium transformer (the main transformer) and
rectified by medium frequency rectifier (fast recovery diodes), 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
ARC160/200 PFC MV 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
）
.
64
44
20
0 600
I
2
（
A
）
U
2
（
V
）
Working
point
Volt-ampere characteristic
The relation of the rated loading
voltage&welding current