Of The; Volt-Ampere; Duty Cycle - MAC TOOLS MW250 Owner's Manual

2-1. Volt-Ampere Curves
Figure 2-1. Volt-Ampere
Curves
2-2. Duty Cycle
-
a
CAUTION.
~0
Ui
~
Ui
a
~
~c
~
-J
Ui
~
~60
~0
Figure 2-2. Duty Cycle
40
30
Cl)
0
>
0
20
10
The volt-ampere
curves
show the
50
minimum and maximum
voltage
and
amperage
output
capabilities
of the
welding
power source.
Curves of
other settings fall be
tween the
curves
shown.
ssbl.1
10/91
SB-049424-D
0
DC AMPERES
WELDING LONGER THAN RATED DUTY CYCLE
can
damage
unit
or
gun
and void
warranty.
Do
n
ot weld at rated load longer than shown below.
wtwam8.2 8/93
Definition
Duty Cycle
is
percentage
of 10
I~
10
minutes that unit
or gun can
weld
at
rated load without
over
Minutes heating.
UNIT
60% Duty Cycle At 200 Amperes
g
6 Minutes Welding 4
Minutes
Resting
Chart GUN
~r~o ouwtir1
60%
Duty
Cycle At 200 Amperes Using CO2
~
6 minutes Welding 4 minutes
Resting
GUN
I
60% Duty Cycle
At 180 Amperes Using Mixed Gas
g~-g~
6 minutes Welding 4 minutes Resting
sbl .38/93 SB.150 215
-
-
I
-------~------
30 40 60 80
70
60
90~0
Z DUTY CYCLE
OM-154
501
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