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SIGMA²

SIGMA²
Excellent Ignition and Welding Properties
Pulse and Synergic
Heavy Duty Offshore Version
Sigma SD card for Update of Software
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Description

Sigma2 300 400 500
MIG/MAG, MMA -  IGC, SYNERGIC, PULSE, AUTOMATION

Migatronic Sigma2 is the second generation of the popular Sigma range of power sources with a maximum output of 300, 400 and 500 A respectively. Available in C (Compact) or S (with separate wire-feed unit) versions and combinable with four different control panels.

With or without pulse and with infinitely variable adjustment of all parameters, the Sigma2 machines are designed for advanced MIG/MAG welding of all types of materials - in trades and assembly, heavy industry, offshore and automation. 

Intelligent welding concept – with savings
In this range of inverter-based MIG/MAG welding machines with MMA, Migatronic has concentrated all intelligent elements of the machine in one place: in the user-friendly control panel. The result is an increased internal memory with space for even more welding programs and a new possibility of future update of welding programs via download of data. For example by means of IGC®, an innovative feature that ensures synergic gas flow and large savings.

Sigma2 500 also features a gouging function and PowerArc™ programs that ensure full penetration in fillet welds and butt welds using mild steel and stainless steel.

Sigma2 is being manufactured to order
No two Sigma machines are necessarily identical. The machines are made to order in precisely the configuration that matches the welding application.



Technical Data

MACHINE TYPE                             SIGMA2 300  SIGMA2 400                  SIGMA2500                 
 Mains voltage +/- 15% (50-60Hz)  3 x 400 V (3 x 230-500 V*)  3 x 400 V  3 x 400 V
 Fuse  16 A  20 A   32 A 
 Effective mains current  15.7 A   17.3 A   25.8 A 
 Mains current, max.  18.1 A    28.0 A   44.9 A 
 Open circuit power  40 W  40 W   40 W 
 Efficiency factor  0.90  0.90  0.90
 Efficiency rate  0.85  0.85   0.85
 Current range 15 - 300 A  15 - 400 A               40 - 500 A
 Duty cycle 20°C (MIG/MAG)   300 A/100%  330 A/100%   475 A/100% 
 Duty cycle 20°C (MIG/MAG)   -  400 A/70%  500 A/80%
 Duty cycle 40°C (MIG/MAG)   270 A/100%  290 A/100%   420 A/100%
 Duty cycle 40°C (MIG/MAG)   300 A/80%  350 A/60%  450 A/60%
 Duty cycle 40°C (MIG/MAG)   -  400 A/40%  500 A/55%
 Open circuit voltage  69-76 V   69-76 V   78-95 V 
 Application class  CE, S  CE, S   CE, S 
 Protection class  IP23   IP23  IP23 
 Norm    IEC60974 -1, -2, -5, -10  IEC60974 -1, -2, -5, -10  IEC60974 -1, -2, -5, -10
 Dimensions C-L (H x B x L, cm)
 Dimensions C-W (H x B x L, cm)
 Dimensions S-W (H x B x L, cm)
 90.6 x 52.4 x 92.5 
 105.1 x 52.4 x 92.5
 114.4 x 52.4 x 103.1
 90.6 x 52.4 x 92.5
 105.1 x 52.4 x 92.5
 114.4 x 52.4 x 103.1
 90.6 x 52.4 x 92.5 
 105.1 x 52.4 x 92.5
 114.4 x 52.4 x 103.1
 Weight C-L/C-W/S-W, kg  58/69/85  58/69/85  60/71/87 


 WIRE FEED UNIT             MWF 41/Internal      RWF Multifeeder       MWF 50             MWF 55           
 Wire feed speed, m/min   1-30  1-30    1-30   1-30
 Wire reel diameter, mm  300  -  200  300 
 Torch connection  Euro connection  Euro connection  Euro connection     Euro connection  
 Duty cycle 40°C  420 A/100%   420 A/100%  420 A/100%  420 A/100%
 Duty cycle 40°C  500 A/60%  500 A/60%   500 A/60%   500 A/60% 
 Protection class  IP23  IP23  IP23  IP23
 Norm  IEC60974 -1, -5, -10  IEC60974 -1, -5, -10  IEC60974 -1, -5, -10   IEC60974 -1, -5, -10
 Dimensions (H x W x L)  44 x 24.5 x 78 cm  27 x 21 x 27 cm  38 x 20 x 54 cm  40 x 26 x 62 cm
 Weight  19  9  10  12


 COOLING UNIT                
 Output 1 l/min.   1.7 kW 
 Tank capacity  3.5 l
 Pressure, max.  3 bar
 Flow 1.2 bar - 60°C  1.75 l/min


C = Compact, S = Separate wire-feed unit
We reserve the right to make changes.