2.1 Brief introduction
AC/DC TIG 200P, AC/DC Plasma TIG 200P
welding machines adopts the latest pulse
width modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power
module, which can change work frequency to medium frequency so as to replace the
traditional hulking ork frequency transformer with the cabinet medium frequency transformer.
Thus, its characterized with portable, small size, light weight, low consumption and etc.
AC/DC TIG 200P, AC/DC Plasma TIG 200P machines Characteristics:
◆
MCU control system, responds immediately to any changes.
◆
High frequency and high voltage for arc igniting to ensure the success ratio of igniting
arc, the reverse polarity ignition ensures good ignition behavior in TIG-AC welding.
◆
Avoid AC arc-break with special means, even if arc-break occurs the HF will keep
the arc
stable.
◆
Pedal control the welding current.
◆
Double purposes: AC inverter TIG and DC inverter TIG/MMA, Excellent performance
on AL-alloy, carbon steel, stainless steel, titanium.
The parameters of on the front panel all can be adjusted continuously and steplessly,
such as start current, crater arc current, welding current, base current, duty ratio, upslope
igniting to ensure the success ratio of igniting arc.
◆
In DC TIG without HFopertation, If the tungsten electrode touches the workpiece when
welding, the current will drop to short-circuit current to protect tungsten.
◆
Intelligent protection: over-current, over-heat, when the mentioned problems occoured,
the alarm lamp on the front panel will be on and the output current will be cut off. It can
self-protect and prolong the using life.
time, downslope time, pre-gas, post-gas, pulse frequency, AC frequency, balance, hot start,
arc force and length etc. When welding, it takes high frequency and high voltage for arc
2.2 Working principle
The working principle of
AC/DC
welding machines is shown as the following figure. Single-phase
230V work frequency AC is rectified into DC (about 312 V), then is converted to medium frequency
AC (about 20-40KHz) by inverter device (IGBT module), after reducing voltage by medium
transformer (the main transformer) and rectifying by medium frequency rectifier (fast recovery
diodes), then is outputted DC or AC by selecting IGBT module. 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.
230V,50Hz
2.4 Specifications
8.7kg
10-200 A
30-170 A
20-40 A
15
.
4 A
15
.
4 A
30
.
9A
30
.
9A
10KVA
425x152x291
200A@ 40%18V
126A@ 100%15V
200A@ 40%18V
126A@ 100%15V
170A@ 25%26
.
8V
85A@ 100%23
.
4V
170A@ 25%26
.
8V
85A@ 100%23
.
4V
ACDC
TIG
200P
IP23
H
Erforderliche Auslegung des
Einphasengenerators
EN 60974-1 / IEC 60974-1
1 x 230 Volt
±
15%
50/60Hz
TIG
/
MMA
(
60V DC
)
TIG
/
MMA
(
60V DC
)
Plasma
(
270V DC
)
9
.
5kg
10-200 A
30-170 A
10KVA
425x152x291
40A@ 40%96V
25A@ 100%90V
ACDC
Plasma
TIG
200P
IP23
H
EN 60974-1 / IEC 60974-1
1 x 230 Volt
±
15%
50/60Hz
Description
Weight
size
(
LxWxH
)
Cooling
Welder Type
European Standards
Mains voltage
Grid frequency
Welding Current Range (TIG Mode)
Welding Current Range (MMA Mode)
Welding Current Range (Plasma Mode)
Maximum Input Current
Effective Input Current
Duty cycle, 40°C, 10 min(TIG)
Duty cycle, 40°C, 10 min(MMA)
Duty cycle, 40°C, 10 min(Plasma)
Open Circuit Voltage
Protection Class
Insulation Class
Fan Cooled
Fan Cooled
Inverter Power Source
Inverter Power Source
2.3 Volt- ampere characteristic
AC/DC
TIG
200P
,
AC/DC Plasma TIG 200P
welding machine has an excellent volt-ampere
characteristic, whose graph is shown as the
following figure. The relation between the con-
ventional rated loading voltage U and the
2
conventional welding current I is as follows:
2
TIG:
When I
≤
600A, U =10+0.04I (V);
2
2
2
MMA:
When I
≤
600A, U =20+0.04I (V);
2
2
2
CUT
:
When I
≤
600A, U =80+0.4I (V);
2
2
2
When I >600A,U =34(V).
2
2
When I >600A,U =44(V).
2
2
Summary
Summary
40
41
