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2.1 Brief Introduction
Summary
2.2 Working principle
230V
The working principle of WIG 200D / CT 520PD 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 rectifying
by medium frequency rectifier (fast recovery diodes),then is outputted DC .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 the requirements of
welding craft.
Summary
WIG 200D / CT 520PD 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.
WIG 200D / CT 520PD 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.
◆With special means, even if arc-break occurs the HF will keep the arc stable.
◆Pedal control the welding current.
◆purposes: DC inverter TIG, Excellent performance on carbon steel, stainless steel,
titanium etc.
The parameters of on the front panel all can be adjusted continuously andsteplessly,
such as start current, crater arc current, welding current, base current, duty ratio, upslope
time, downslope time, pre-gas, post-gas, pulse frequency, hot start, arc force and length
etc. When welding, it takes high frequency and high voltage for arc 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.
2.3 Volt- Ampere characteristic
WIG 200D / CT 520PD welding machine
has an excellent volt-ampere charac-
teristic, whose graph is shown as the
following figure. The relation between
the conventional rated loading voltage
U and the conventional welding current
2
I is as follows:
2
When I ≤600A, U =10+0.04I (V);
2 2 2
When I ≤600A, U =20+0.04I (V);
2 2 2
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
TIG
MMA
CUT
2.4 Specifications
Weight
Power Source Dimensions
Cooling
Welder Type
European Standards
Number of Phases
Nominal Supply Voltage
Nominal Supply Frequency
Welding Current Range (DC STICK Mode)
Welding Current Range (DC TIG Mode)
Single Phase Generator Requirement
Welding Output, 40ºC, 10 min (MMA)
Welding Output, 40ºC, 10 min (TIG)
Open circuit voltage
Protection Class
Maximum Input Current
Effective Input Current
6.2 kg
H375mmxB153mmxT287mm
10 - 200A
18.2A
30.9A
10kVA
200A @ 35%,18V/ 118A @ 100%, 14.7V
170A @ 35%, 26.8V / 100A @ 100%, 24V
IP23
VECTOR DIGITAL WIG 200D
EN 60974-1 / IEC 60974-1
1
230V +/- 15%
50/60Hz
10 - 170A
74V DC
Fan Cooled
Inverter Power Source
Description
DC TIG SERIES EQUIPMENTDC TIG SERIES EQUIPMENT
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