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A-4
PARALLEL OPERATION
The EX350i are operable in parallel in CC mode. For
best results, the currents of each machine should be
reasonably well shared. As an example, with two
machines set up in parallel for a 400 amp procedure,
each machine should be set to deliver approximately
200 amps, not 300 amps from one and 100 amps
from the other. This will minimize nuisance shutdown
conditions. In general, more than two machines in
parallel will not be effective due to the voltage require-
ments of procedures in that power range.
To set machine outputs, start with output control pots
and arc control pots in identical positions. Use the
output control pots to balance the currents and main-
tain the desired voltage or current. The arc control
pots should be kept identical on the two machines.
QUICK DISCONNECT PLUGS
A quick disconnect system is used for the welding
cable connections. The welding plug included with the
machine is designed to accept a welding cable size of
1/0 to 2/0.
•
Remote 25mm (1 in.) of welding cable insulation.
•
Slide rubber boot onto cable end. The boot end
may be trimmed to match the cable diameter.
Soap or other lubricant will help to slide the boot
over the cable.
WELDING CABLE
25 mm
1 in.
•
Slide the copper tube into the brass plug.
•
Insert cable into copper tube.
COPPER TUBE
•
Tighten set screw to collapse copper tube. Screw
must apply pressure against welding cable. The
top of the set screw will be well below the surface
of the brass plug after tightening.
•
Slide rubber boot over brass plug. The rubber
boot must be positioned to completely cover all
electrical surfaces after the plug is locked into the
receptacle.
INSTALLATION
BOOT
TRIM
SET SCREW
BRASS PLUG
EX350i
A-4
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Troubleshooting
