PCB276
CN1
CN2
CN3
CN4
-12 V
12 V
5 V
0 V
Output’
s
POWER SUPPLY
PCB
12 V
0 V
0
220 V ~
Chasis
Input
Grey
Grey
Green
Red
Black
Black
Pink
Orange
Blue
PCB271B
CN1
CN5
CN7
CN2
CN10
CN8
CN6
CN4
CN9
Orange
L. Gray
L. Gray
D. Gray
Blue
WELDING CURR.
300
PCB255
Capacitive Filter
4K7 Lin.
T1
Output Terminal (-Ve)
Output Terminal (+Ve)
DCL1
415-V, 3-Ph, INPUT
Ferrite
Beads
AC 220-V
DC 12-V
Bridge
CT
o
90
C
1uf /250 X2
0.1uf /250 X2
220/14
Machine
W. Cable
300A
400A
500A
35 mm sq.
50 mm sq.
70 mm sq.
CONNECTION DIAGRAM OF IRT300/400/500
(Main Transformer)
PCB278
CN1
CN4
CN5
Torch Plug
TIG / MMA
H.F.
F
I
L
T
E
R
V
A
L
V
E
A r
LINK
LINK
IGBT
& DRIVER
SET
4x 100K2W
PCB216
Note: #
2 X (431/14)
2 X (100R 2W)
.1 / 275 X2
2 X (100R 2W)
.1 / 275 X2
Fill with Turns
300A
400A
500A
Machine
PCB
275A
275B
275B
(July, 2014)
2200/16
24-V
T47 IP
DCL
Capacitor
