11
Burn back time
Because of inertia of wire feeder, welding wire do not stop immediately, so small droplet is created on
top of wire. To eliminate this adverse factor machine is equipped with burn back function. When user
stops welding machie still keep output voltage for certain amount of time so the wire burns back and
eliminates the bulb.
Gas post-flow
In order to protect the welding area, when end of the welding still have gas for protect (last 3S).
MMA function
When put the switch under the MMA, wlding machine can work with electrodes.
Sign & Pictures Illustration
Ground
Three phase stillness transducer–transformer–rectifier
MIG/MAG welder
DC current
Three phases AC power source
X
Duty Cycle
I1max
Max Input Current
I1eff
Effective Input Current
I2:
Rated Welding Current
U0
Rated Open Circuit Voltage
U1
Rated Input Voltage
U2
Rated Load V
V
Voltage
A
Amperage
%
Duty Cycle
A/ V~ A/ V:
Output Range, Rated Minimum, Rated Maximum Welding Current
and
elated Load Voltage
EN60974-1
International Standard, Welding Equipments – Part 1: Welding Power
Sources
IP21S
Case protection class. IP is the code of International Protection. 2 mean
preventing user’s finger from the dangerous parts; preventing the solid
material with the diameter no less than 12.5 mm into the box. 1 means
preventing water dropping vertically which is harmless. S means water
proof test is conducting while the movable parts are standstill.
H
Insulation Grade H
