Connecting Input Power - Miller Deltaweld 652 Owner's Manual

4-13. Connecting Input Power

7
3
When making connections in
the line disconnect device,
connect the Green Or
Green/Yellow conductor first.
Install conductors into
a deenergized line
disconnect device.
Make connections
to machine first and
supply last.
3
10
Tools Needed:
3/8 in
3/8 in
= GND/PE Earth Ground
1
9
8
4
IMPORTANT
6
Input Contactor
L1 (U)
2 L2 (V)
L3 (W)
3
5
PE Connect Green Or Green/Yellow
GND/
GND/PE Conductor First.
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Y Disconnect and lockout/tagout in-
put power before connecting input
conductors from unit.
Y Have only qualified persons make
this installation.
See rating label on unit and check input
voltage available at site.
1 Line Disconnect Device
2 Input Conductors
3 Grounding Conductor
Select size and length using Section 4-11.
Conductors must comply with national,
state, and local electrical codes. If applica-
ble, use lugs of proper amperage capacity
and correct hole size.
4 Strain Relief
Route conductors through strain relief.
5 Machine Grounding Terminal
6 Line Terminals
Y Make input power connections to
the welding power source before
making connections into a deener-
gized line disconnect device.
Connect green or green/yellow grounding
conductor to machine grounding terminal
first. Then connect input conductors to line
terminals.
Close access door.
7 Disconnect Device (Supply)
Grounding Terminal
3
8 Disconnect Device Line Terminals
Y In the deenergized line disconnect
device, connect green or green/
yellow grounding conductor to
supply grounding terminal first,
never to a line terminal. Be sure
grounding conductor goes to an
earth ground.
Connect input conductors to line termi-
nals.
9 Overcurrent Protection
Select type and size using Section 4-11
(fused disconnect switch shown).
Close door on line disconnect device.
10 Reed Switch (Ground Current
Sensor) (Optional)
If unit is equipped with optional ground cur-
rent sensor, route grounding conductor
through reed switch two times and con-
nect to ground terminal.
Close access door.
ST-800 103-B / Ref. ST-801 116
OM-223 Page 21