OM-264 278 Page 9
3-4.
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.
3.5 Minutes Welding
6.5 Minutes Resting
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
35% Duty Cycle At 500 A
200
250
300
400
450
350
500
150
W
eld
Amperes
0
10
20
30
40
50
60
70
80
90
100
% Duty Cycle
6 Minutes Welding
4 Minutes Resting
60%Duty Cycle At 380 A
100% Duty Cycle At 300 A
Continuous
Welding
Содержание STR 400
Страница 4: ......
Страница 27: ...A complete Parts List is available at www MillerWelds com OM 264 278 Page 23 956172121 A...
Страница 29: ...A complete Parts List is available at www MillerWelds com OM 264 278 Page 25 956172123 A...
Страница 33: ...Notes Work like a Pro Pros weld and cut safely Read the safety rules at the beginning of this manual...
Страница 34: ...Notes Work like a Pro Pros weld and cut safely Read the safety rules at the beginning of this manual...
