Lincoln Electric IM619 POWER WAVE 455 - Manual (Page 10)

A-3 INSTALLATION
POWER WAVE 455
A-3
INPUT FUSE AND SUPPLY WIRE
CONSIDERATIONS
Refer to the Technical Specifications at the beginning
of this Installation section for recommended fuse and
wire sizes.
Fuse the input circuit with the recommend-
ed super lag fuse or delay type breakers (also called
“ inverse time ” or “ thermal/magnetic ” circuit breakers).
Choose an input and grounding wire size according to
local or national electrical codes. Using fuses or cir-
cuit breakers smaller than recommended may result in
“ nuisance ” shut-offs from welder inrush currents, even
if the machine is not being used at high currents.
INPUT VOLTAGE CONNECTION
PROCEDURE
Only a qualified electrician should connect the input
leads to the Power Wave. Connections should be
made in accordance with all local and national electri-
cal codes and the connection diagram located on the
inside of the reconnect/input access door of the
machine. Failure to do so may result in bodily injury or
death.
Use a three-phase supply line. A 1.75 inch (45 mm)
diameter access hole for the input supply is located on
the case back. Connect L1, L2, L3 and ground
according to the Input Supply Connection Diagram
decal located on the inside of the input access door.
OUTPUT CONNECTIONS
Use the largest welding (electrode and ground) cables
possible
— at least 70 mm (2/0), 95 mm (4/0) pre-
ferred, copper wire — even if the average output cur-
rent would not normally require it. When pulsing, the
pulse current can exceeds 650 amps. Voltage drops
can become excessive, leading to poor welding char-
acteristics, if undersized welding cables are used.
To avoid interference problems with other equipment
and to achieve the best possible operation, route all
cables directly to the work or wire feeder. Avoid
excessive lengths, bundle the electrode and ground
cables together where practical, and do not coil
excess cable.
FIGURE A.1 - CONNECTION DIAGRAM ON CONNECTION/INPUT ACCESS DOOR
W / L3
V / L2
U / L1
THE LINCOLN ELECTRIC CO. CLEVELAND, OHIO U.S.A.
XA S24190
use or service this equipment.
Do not touch electrically live parts.
removed.
Only qualified persons should install,
Do not operate with covers
inspecting or servicing machine.
Disconnect input power before
.
.
.
.
CR1
INPUT SUPPLY CONNECTION DIAGRAM
NOTE: Turn main input power to the machine OFF before performing connection procedure. Failure to
do so will result in damage to the machine.
WARNING