Section 2 − Installation; Specifications; Duty Cycle And Overheating - Miller Electric CP-302 Owner's Manual

2-1. Specifications

Rated Rated
Model
Welding
Output
250 A @ 35
250 Amp Volts DC, 100%
Duty Cycle
300 A @ 32
300 Amp Volts DC, 100%
Duty Cycle
*While idling

2-2. Duty Cycle And Overheating

Overheating
SECTION 2 − INSTALLATION
Open-
Amperes Input at Rated Load Output, 50 or 60 Hz, Three-Phase
Circuit Circuit
Voltage
200 220
Range
V V
DC
34.5
14−44 −−
1.7*
38 34.5
14−44
3* 2.8*
CP302
CP252TS
0
Minutes
230 380 400 440
V V V V
30
−− −− −−
1.4*
33 20 19 17.3
2.7* 1.9* 1.6* 1.5*
100% Duty Cycle
Continuous Welding
15
OR
Reduce Duty Cycle
460 520 575
KVA
V V V
15 11.9
−− −−
0.7* 0.57*
16.5 14.6 13.0 13.1
1.4* 1.1* 0.7* 0.97*
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
warranty.
A/V
duty1 4/95 / Ref. SA-177 714-B
OM-259 Page 9
KW
11.2
0.42*
12.3
0.68*
void