7
§3 INSTALLATION AND ADJUSTMENT
§3.1 Parameters
Model
Parameters
GT-1600
GT-2000
Power source
Single phase
110V/115V
AC 50 Hz
Single phase
220V/230V
AC 50 Hz
Single phase
110V/115V
AC 50 Hz
Single phase
220V/230V
AC 50 Hz
TIG
MMA
TIG
MMA
TIG
MMA
TIG
MMA
Rated input current
（
A
）
30
38
15
25
30
38
20.7
33
Rated input power
（
KW
）
3.5
4.2
3.5
5.6
3.5
4.2
4.5
7.2
Power factor
0.98
Welding current adjustment
range
（
A
）
5-160
5-125
5-160
5-160
5-160
5-125
5-200
5-200
No-load voltage(V)
55V
Down Slope time
（
S
）
0-10
Efficiency
≥
75%
Duty cycle
（
40
℃
10 minutes
）
25%
200A
200A
30%
125A
125A
35%
160A
160A
160A
160A
60%
120A
95A
130A
130A
120A
95A
130A
130A
100%
100A
80A
100A
100A
100A
80A
100A
100A
Protection class
IP23S
Insulation class
F
Dimensions of Machine
（
L
×
W
×
H
）
（
mm
）
440*140*230
Weight
（
Kg
）
9.5
Note: The above parameters are subject to change with the improvement of machines.
§3.2 Duty cycle & Over heat
The letter “X” stands for duty cycle,
which is defined as the proportion of the
time that a machine can work continuously
within a certain time (10 minutes). The rated
duty cycle means the proportion of the time
that a machine can work continuously within
10 minutes when it outputs the rated
welding current.
The relation between the duty cycle
“X” and the output welding current “I” is
shown as the right figure.
If the welder is over-heat, the IGBT
over-heat protection unit inside it will output an instruction to cut output welding current, and
brighten the over-heat pilot lamp on the front panel. At this time, the machine should be relaxed
I
（
A
）
0
100
％
35%
100
160
X
The relation between duty cycle and
welding current for GT-1600
130
60%
Fig 3.1 the relation between duty cycle and welding
current for GT-1600
（
Input
：
220V MMA
）
