Lincoln Electric DC-650 PRO IM463-A User Manual
Page 11
There are two pairs of studs for the negative
connection. It is important to use the correct pair of
studs, depending on the processes in use. NOTE:
DO NOT CONNECT BOTH PAIRS OF NEGATIVE
STUDS TOGETHER. USE EITHER ONE PAIR, OR
THE OTHER, BUT NEVER CONNECT BOTH PAIRS
TO THE WORKPIECE AT THE SAME TIME. Doing
so will adversely affect the output characteristics of
the machine, giving poor welding performance.
Note that the center pair is labeled
“
-
”
and
“
GMAW
FCAW
”
(#4, Figure 2). This pair is to be used for
constant voltage processes requiring low output
inductance, such as gas metal arc welding, and flux-
cored arc welding.
The left hand pair is labeled
“
-
”
and
“
SAW, SMAW
”
(#3, Figure 2). This pair is to be used for constant
current processes, such as stick welding, as well as
for submerged arc welding on constant voltage.
–
11
–
3
4
5
Output
700A
Duty Cycle
100%
0 - 100 ft
(0 - 30 m)
2 - 2/0
(2 - 70 mm
2
)
100 - 200 ft
(30 - 60 m)
2 - 3/0
(2 - 95 mm
2
)
200 - 250 ft
(60 - 75 m)
2 - 4/0
(2 - 120 mm
2
)
Cable Sizes for Combined Length of Work and Electrode Cables
RECOMMENDED CABLE SIZES
(RUBBER COVERED COPPER - RATED 75
°
C)
Figure 2
Output Connections
See Figure 2 for locations of the various case front
connection points.
The DC-650 PRO output studs are mounted in pairs.
The two studs in each pair are internally connected to
each other with a buss bar. The studs have a 1/2-13
thread. Output cable lugs must have a hole large
enough to clear a 1/2 inch stud. Choose the cable
size from the table
“
Recommended Cable Sizes
”
.
Lengths shown are the total cable length, work cable
length plus electrode cable length.
Output cable strain reliefs are built into the DC-650
PRO base. Feed the output cables up through the
strain relief holes before connecting to the output
studs. This will prevent damage to the studs and the
cables in the event the cables are pulled or stretched.
The positive connections can be made to the pair of
studs on the lower right of the case front, marked
“
+
”
(#5, Figure 2). Connection can be made to either or
both of the
“
+
”
studs.