6. Connection
WMD078TE0PAA07
42
1) Connecting grounding wire
(1) Remove the input terminal cover from the
rear side panel.
(2) Connect the grounding wire to the terminal
PE (ground terminal) at the far right of the
terminal block.
* Tightening torque: 1.7 N
•
m to 2.3 N
•
m
< Note >
Draw the grounding wire loosely.
(3) Provide 100-ohm or less grounding work of
the appropriate level to the other end of the
grounding wire, either to the switch box or to
the ground.
(See the figure on the right.)
2) Connecting input cable
Provide one switch box for one welding power
source and connect according to the figure.
(1) Turn off the power at the power distribution
box (customer supply).
(2) Remove the input terminal cover.
(3) Connect one end of the input cable (L
1
(U),
L
2
(V), L
3
(W)) through the saddle to the input
terminal.
* Tightening torque: 1.7 N
•
m to 2.3 N
•
m
< Note >
•
No particular phase order to connect.
•
Do not use a wrench to avoid overtighten-
ing of the crimp terminal.
(4) Wrap the input cable with the grounding wire
with the supplied rubber cover and then set
the saddle over the rubber cover to fix the
cable.
< Note >
Cut the rubber cover to fit the input cable if
necessary.
(5) Place the input terminal cover back in place.
< Note >
To ensure safety, fix the input terminal cover
with a screw.
(6) Connect the other end of the input cable to
the load terminal of the switch box.
Saddle
(*)
Ground
Input cable
L
1
L
2
L
3
PE
Rear side
Remove the
input terminal cover
(M5 bolt)
Ground terminal
terminals
Input
Grounding
input terminal
cover
Switch box
cover
Rubber
wire
<Grounding work to the ground>
PE
(M5 bolt)
Ground terminal
Grounding
wire
Do not use a wrench
to avoid overtightening.
