3-3. Duty Cycle And Overheating
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.
NOTICE − Exceeding duty cycle can damage unit and void warranty.
100% Duty Cycle At 675 Amperes
Continuous Welding
Overheating
0 | A/V |
| 15 |
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Minutes | Reduce Duty Cycle |
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| duty1 4/95 − 206 |
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| CV MODE |
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| and maximum voltage and amper- | |
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| age output capabilities of unit. |
| 80 |
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| Curves of other settings fall be- |
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| tween curves shown. | |
| 70 |
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| sents the dynamic output of the | |
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| 60 |
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| unit with a static load. |
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VOLTAGE | 50 |
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40 |
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| 30 |
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| 20 |
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| 10 |
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| 0 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 |
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| AMPERES |
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| va_curve1 4/95 − 221 |
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