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OM-2251 Page 11
SECTION 3 − INTRODUCTION
3-1. Specifications
Input
Voltage
Amperage
Range in
Max.
Open-
Circuit
RMS Amps Input at Rated Load Output,
60 Hz 3-Phase at NEMA Load Voltages
and Class I Rating
Input
Power
Rated Output
Voltage
Range in CV Mode
Range in
CC Mode
Circuit
Voltage
208 V 230 V 400 V 460 V 575 V
KVA KW
3-Phase 350 A at 34
VDC, 60%
Duty Cycle
10−38 V 5−425 A 75 VDC 40.4 36.1 20.6 17.8 14.1 14.2 13.6
1-Phase 300 A at 32
VDC, 60%
Duty Cycle*
60.8 54.6 29.7 25.4 19.9 11.7 11.2
*See Section 3-3 for Duty Cycle Rating.
3-2. Volt-Ampere Curves
217 836-A / 217 837-B
Volt-ampere curves show minimum
and maximum voltage and amper-
age output capabilities of welding
power source. Curves of other set-
tings fall between curves shown.
0
10
20
30
40
50
60
70
80
90
100
0 100 200 300 400 500
50%
75%
100 %
25%
0%
AMPERAGE
VOLTS
A. CC Mode
GTAW
MAX
SMAW
MAX
SMAW
80A
ARC
CONTROL
GTAW
MN
0
10
20
30
40
50
60
70
80
90
100
0 100 200 300 400 500
VOLTS
B. CV Mode
AMPERAGE
MAX
MIN