Tweco 500P PowerMaster - Manual (Page 19)

POWERMASTER 500, 500P, 350
Manual No. 0-4749 2-3 INTRODUCTION
2.05 General: Power-Master 350
The Power-Master 350 is a primary inverter DC power
source that can be used for constant voltage and constant
current weld processes. The Power-Master 350 output is
rated at 350 Amps/34 Volts at 100% duty cycle and 425
Amps/37 Volts at 60% duty cycle. The power source also
provides 24VAC and 120VAC auxiliary outputs both rated
at 10 Amps.
Controls are built into the power source for Gas Tungsten
arc welding (GTAW), Shielded Metal arc welding (SMAW),
Carbon arc gouging (CAG) and Gas Metal arc welding
(GMAW)/Flux Cored Arc Welding (FCAW). An ArcForce/
Inductance control is also provided to allow adjustment
of the arc stiffness for SMAW.
The graphs in Figure 2-1 show the output volt-amp
characteristics of the Power-Master 500 power source.
70
60
50
40
30
20
10
0
100 200 300 400 500 600 700
V
olts
Amps
0
VOLT-AMP CURVE FOR CC-SMAW MODE
MIN.
MAX. ARC FORCE
MAX.
MIN. ARC
FORCE
70
60
50
40
30
20
10
0
100 200 300 400 500 600
V
olts
Amps
0
VOLT-AMP CURVE FOR CC-GTAW MODE
MIN. MAX.
Art # A-04120
70
60
50
40
30
20
10
0
100 200 300 400 500 600 700
V
olts
Amps
0
VOLT-AMP CURVE FOR CV-GMAW MODE
MIN.
MAX.
Art #A-07352
Figure 2-2: Power-Master 350 Power Source Volt-Amp
Characteristics