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OM-259 Page 9
SECTION 2 – INSTALLATION
2-1. Specifications
Rated
Open-
Circuit
Amperes Input at Rated Load Output, 50 or 60 Hz, Three-Phase
Model
Rated
Welding
Output
Circuit
Voltage
Range
DC
200
V
220
V
230
V
380
V
400
V
440
V
460
V
520
V
575
V
KVA KW
250 Amp
250 A @ 35
Volts DC, 100%
Duty Cycle
14–44
34.5
1.7*
––
30
1.4*
–– –– ––
15
0.7*
–– ––
11.9
0.57*
11.2
0.42*
300 Amp
300 A @ 32
Volts DC, 100%
Duty Cycle
14–44
38
3*
34.5
2.8*
33
2.7*
20
1.9*
19
1.6*
17.3
1.5*
16.5
1.4*
14.6
1.1*
13.0
0.7*
13.1
0.97*
12.3
0.68*
*While idling
2-2. Duty Cycle And Overheating
Continuous Welding
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
Y Exceeding duty cycle can
damage unit and void
warranty.
100% Duty Cycle
Overheating
0
15
A/V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 / Ref. SA-177 714-B
CP302
CP252TS