4-4. Fuel Consumption

The curve shows typical fuel use under weld or power loads.

U.S. GAL/HR.

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25IDLE

0.00

0 50 100 150 200 250 300 350 400 DC WELD AMPERES AT 100% DUTY CYCLE

217 509

4-5. Duty Cycle And Overheating

100% Duty Cycle At 250 Amperes

Continuous Welding

Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating.

YExceeding duty cycle can damage unit and void warranty.

 

1000

 

 

 

 

 

 

 

 

 

 

 

800

 

 

 

 

 

 

 

 

 

 

AMPERES

600

 

 

 

 

 

 

 

 

 

 

500

 

 

 

 

 

 

 

 

 

 

400

 

 

 

 

 

 

CC

 

 

 

 

 

 

 

 

 

CV

 

 

 

300

 

 

 

 

 

 

 

 

 

WELD

 

 

 

 

 

 

 

 

 

 

250

 

 

 

 

 

 

 

 

 

 

200

 

 

 

 

 

 

 

 

 

 

 

150

 

 

 

 

 

 

 

 

 

 

 

100

10

15

20

25

30

40

50

60

80

100

% DUTY CYCLE

217 515

OM-4433 Page 14

Page 18
Image 18
Miller Electric 300 P Fuel Consumption, Duty Cycle And Overheating, Curve shows typical fuel use under weld or power loads