Miller Electric Big Blue 400 PX - Manuel (Page 23)

OM-229 979 Page 17
4-4. Fuel Consumption
The curve shows typical fuel use
under weld or power loads.
217 509
IDLE
DC WELD AMPERES AT 100% DUTY CYCLE
U.S. GAL/HR.
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
0 50 100 150 200 250 300 350 400
Continuous Welding
4-5. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
100% Duty Cycle At 250 Amperes
217 515
10 15 20 25 30 40 50 60 80 100
CC
CV
1000
800
600
500
400
300
250
200
150
100
WELD
AMPERES
% DUTY CYCLE