ESAB AristoMig U400, Instruction Manual, Page: 5 / 20

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3 INTRODUCTION
The AristoMig U400 is a MIG/MAG / TIG welding power source, which can also be
used for MMA welding.
The power source is intended for use with the AristoFeed 30--4 or AristoFeed 48--4
wire feed units.
All the settings are made from the wire feed unit or control box AristoPendant U8.
ESAB’s accessories for the product can be found on page 17 .
3.1 Equipment
The AristoMig U400 power source is supplied complete with terminating resistor, 5m
return cable and instruction manual.
4 TECHNICAL DATA
AristoMig U400
Mains voltage 400V,
±
10%, 3
∼
50 Hz
Primary current
I
max
MIG/MAG
I
max
MMA
I
max
TIG
36 A
38 A
29 A
No--load power demand when in the energy--saving mode,
6.5 min. after welding 60 W
Voltage/current range
MIG/MAG
MIG/MAG, M2
MMA
TIG
8--60 V / 16--400 A
8-- 42 A
16-- 400 A
4 -- 400 A
Permissible load at MIG/MAG
35% duty cycle
60 % duty cycle
100% duty cycle
400 A / 34 V
320 A / 30 V
250 A / 27 V
Permissible load at MMA
35% duty cycle
60 % duty cycle
100% duty cycle
400 A / 36 V
320 A / 33 V
250 A / 30 V
Permissible load at TIG
35% duty cycle
60 % duty cycle
100% duty cycle
400 A / 26 V
320 A / 23 V
250 A / 20 V
Power factor at maximum current 0.65
Efficiency at maximum current 85 %
Open--circuit voltage
MIG/MAG
MMA
TIG
55 -- 70 V
78 -- 90 V
78 -- 90 V
Operating temperature --10 to +40 ˚ C
Continual A--weighted sound pressure <70 db
Dimensions, lxbxh
with cooling unit
625 x 394 x 496 mm
625 x 394 x 776 mm
GB