9.“Arc force current” regulation knob
It is used to adjust arc force current on panel control mode.
When welding, short circuit between wire and work piece may occur because of operation or droplet transfer. In order to
avoid short circuit or wire stick, when arc voltage is low, increase current to shorten the droplet transfer time.
10.Positive output terminal (+)
Connect with electrode holder via welding cable in SMAW.
In Gouging, it is connected to the gouging torch.
11.Negative output terminal (-)
Connect with work piece via ground cable.
Rear panel
Fig. 4-3-2: Rear panel
1. 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.
2. 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.
3. Nameplate
4. Cooling fan
Cool down the heat components in the welding machine.
5. 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 power supply cable is grounded
firmly.
10
3 / N / P E
～
3 80 V 5 0zH
3～
f
2
f
1
S
MODEL
No.
M AD E NI
X
U
2
I
2
60%
400A
36V
100%
310A
32.4V
U
0
=70V
U
r
=20V
20 A/2 0.8V
～
400A/36V
STAN DARD:
EN 60974-10
EN 60974-1
3～50Hz
U1 =400V
I 1max =26.6A
I 1eff =20.9A
INSULATION DEGREE:
PROTECTION EDGREE:
H/B
I P2 3 S
ARC500
1
2
3
4
5
