Output Connections - Lincoln Electric DC-650 PRO IM463-A Operator's Manual

Output Connections

See Figure 2 for locations of the various case front
connection points.
Output
700A
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.
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.
so will adversely affect the output characteristics of
the machine, giving poor welding performance.
RECOMMENDED CABLE SIZES
(RUBBER COVERED COPPER - RATED 75°C)
Cable Sizes for Combined Length of Work and Electrode Cables
Duty Cycle 0 - 100 ft
(0 - 30 m)
100% 2 - 2/0
(2 - 70 mm
3
Figure 2
Doing
–
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.
100 - 200 ft
(30 - 60 m)
2 - 3/0
2
) (2 - 95 mm
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.
4
5
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
200 - 250 ft
(60 - 75 m)
2 - 4/0
2 2
) (2 - 120 mm )