Input Connection; Input Fuse And Supply Wire Considerations - Lincoln Electric POWER WAVE SVM156-A Service Manual

A-5
(K1761-1) CONNECTION DIAGRAM ON CONNECTION/INPUT ACCESS DOOR
INPUT SUPPLY CONNECTION DIAGRAM
WARNING
ELECTRIC
SHOCK
CAN KILL
(K1761-2) CONNECTION DIAGRAM ON CONNECTION/INPUT ACCESS DOOR
INPUT SUPPLY CONNECTION DIAGRAM
WARNING
ELECTRIC
SHOCK
CAN KILL
VOLTAGE = 220-230V
NOTE: Turn main input power to the machine OFF before performing connection procedure. Failure to do
so will result in damage to the machine.

INPUT CONNECTION

WARNING
Only a qualified electrician should connect the input
leads to the Power Wave. Connections should be made
in accordance with all local and national electrical 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 upper left case back next to the input access door.
Connect L1, L2, L3 and ground according to the Input
Supply Connection Diagram decal located on the
inside of the input access door, or refer to Figure A.1.
INSTALLATION
FIGURE A.1
W / L3
V / L2
CR1
U / L1
VOLTAGE = 440-460V
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 circuit
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.
POWER WAVE 455/R
VOLTAGE = 200-208V
VOLTAGE = 550-575V
A-5