B-2
INSTALLATION
FLEXTEC™ 500 P
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. Remove the
reconnect access panel located on the case back and connect L1, L2, L3
and ground according to the Input Supply Connection Diagram decal.
(See Figure B.1)
Input Fuse and Supply Wire Considerations
Refer to
Page A-1
for recommended fuse, wire sizes and type of the
copper wires. Fuse the input circuit with the recommended super lag
fuse or delay type breakers (also called "inverse time" or
"thermal/magnetic" circuit breakers). Choose input and grounding
wire size according to local or national electrical codes. Using input
wire sizes, 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.
Figure B.1
Power Supply Access Hole
•
Route input power cable through
this hole.
•
Strain relief required. See your
local and national electrical
codes for proper strain relief.
Reconnect Terminal Block
•
Reconnects auxiliary
transformer for the proper input
voltages
Power Supply Terminal Block
•
Line Cord/Cable attaches here.
•
A ground terminal marked with
the symbol shown
is
provided separate from this
block for connecting the ground
lead of the line cord. See your
local and national electrical
codes for proper grounding
methods.