Miller Electric Big Blue 400 KX manual Fuel Consumption, Duty Cycle And Overheating

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

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