43
Rear panel
Fig. 7-3-2: Rear panel
23. Circuit breaker
The function of circuit breaker is to protect welding machine and operator by automatic trip to turn-off power
supply when overload or short circuit happens to the power source. Normally, the switch flipped to upward means
power-on. To start or stop the welding machine is done by the mains switch in the distribution box. Please do not
take this circuit breaker as the power switch.
24. Input power cable
It is 4-pin cable. The mixed-colored wire must be firmly grounded, the rest wires connect to corresponding 3-phase
power supply.
25. Cooling fan
Cool down the heat components in the welding machine.
26. Earthing bolt
To ensure operators not being harmed and welding machine working normally, make sure the earthing bolt is
grounded firmly by protective GND wire, or make sure the protective GND wire (mixed-colored) of the input power
cable is grounded firmly.
27. Input cable cleat
28. Nameplate
7-4 Connections
Output socket
The output socket of this power source has two types: one is fast plug-in type, another one is compression type.
Make sure the plug match your power source socket.
3
/
N
/
PE
～
380V 50 H z
Ⅲ
Ⅰ
Ⅱ
3
～
f 2
f 1
S
MODEL
No
.
STANDARD
:
GB 1 5579
.
1
-
2004
U
0
=
79V
PROTECTION DEGRE E
:
IP21S INSULATION DEGREE
:
MADE IN
3
～
50Hz
U
1
=
380V
20A
/
21V
～
400A
/
36V
I
1max
=
28A
I
1eff
=
22A
X
U
2
I
2
60
%
400A
36 V
100
%
310A
32
.
4V
A R C 4 0 0
(
3T
)
H
/
B
23
24
25
26
27
28
Fast plug
-
intype
Compression type
