4. duty cycle and overheating, 5. volt-ampere curves – Hobart Welding Products CYBERTIG 350LX User Manual

Page 18

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OM-356 Page 14

6 Minutes Welding

4 Minutes Resting

4 Minutes Welding

6 Minutes Resting

3-4.

Duty Cycle And Overheating

Duty Cycle is the percentage of 10
minutes that the unit can weld at
rated load without overheating.

If unit overheats, output stops, front
panel voltmeter/ammeter displays
a HLP3 or HLP5 message (see
Section 5-4), and cooling fans run.
Wait fifteen minutes for unit to cool.
Reduce amperage or duty cycle be-
fore welding.

Y

Exceeding duty cycle can
damage unit and void war-
ranty.

40% Duty Cycle At 350 Amperes (60 Hz Models Only)

Overheating

0

15

A

OR

Reduce Duty Cycle

Minutes

duty1 4/95 / SB-190 276

60% Duty Cycle At 300 Amperes

ssb1.1 10/91 – ST-

The volt-ampere curves show the
minimum and maximum voltage
and amperage output capabilities of
the welding power source. Curves
of other settings fall between the
curves shown.

3-5.

Volt-Ampere Curves

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