AUTO ARC 120 - VOLT-AMPERE CURVES; DUTY CYCLE EXPLANATION

2-1.
Volt-Ampere
Curves
Figure
2-1.
Volt-Ampere
Curves
__a__CAUTION
___
EXCEEDING DUTY CYCLE
RATINGS
will
damage
unit.

Do
not
exceed indicated
duty cycles.
wam7.1
Figure
2-2.
Welding
Power Source
Duty
Cycle
Chart
25
20
15
Cl)
0
>
0
10
30
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.
SB-124
646-A
5
0
0
20 40
60 80
DC AMPERES
100 120
2-2.
Duty
Cycle
Duty cycle
is
how
long
the unit
can
150
operate
within
a
ten
minute
period
without
causing overheating
or
125
damage.
This
unit
is
rated
at
20%
duty
cycle
100
allowing
welding
2
minutes
out of
every
10
minutes.
Cl)
75
lii
50
~
37.5
25
0
10 15
20
25
30
40
60
60 70
8090100
%
DUTY
CYCLE
SB-124
655-A
OM-151
015
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