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OUTPUT CONNECTIONS
The output (welding) cables are connected to the output
terminals marked “+” and “-”. See Table A.1 for recom-
mended cable sizes for the combined lengths of elec-
trode and work cables. They are located at the lower
right and lower left corners of the front panel. Strain
relief for the cables is provided by routing them through
the rectangular holes in the base before connecting
them to the output terminals. Lift the output terminal
cover to access the output terminals. Lower the cover
after making the connections. See Figure A.6.
INSTALLATION
A-7 A-7
LINCOLN
®
ELECTRIC
IDEALARC DC-400
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FIGURE A.5 - INPUT CONNECTION DIAGRAM FOR 230/460/575 VOLTS AC, 60 HZ
THE LINCOLN ELECTRIC CO., CLEVELAND OHIO U.S.A.
M15666
INPUT SUPPLY CONNECTION DIAGRAM
H3
GND
H2
Do not touch electrically live parts
Only qualified persons should install,
use or service this equipment
removed
servicing
Do not operate with covers
Disconnect input power before
INPUT
LINES
L1
H1
L2
L3
{
CR1
V
U
W
CONTACTOR
H4
PILOT
TRANSF.
1. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H1 & H4 PILOT
TRANSFORMER LEADS TO THE INPUT SIDE OF CR1 CONTACTOR AS SHOWN.
2. INSULATE UNUSED H2, H3 LEAD TERMINALS SEPERATELY TO PROVIDE
AT LEAST 600V INSULATION.
4. CONNECT TRANSFORMER LEADS 16, 17, 18, 4 & 13, 5 & 14, 6 & 15 TO RECONNECT PANEL.
5. TAPE SEPERATELY TO PROVIDE AT LEAST 600V INSULATION 1, 2, 3, 7, 8, 9.
TAPE INSULATED UNUSED LEADS TOGETHER AWAY FROM LIVE METAL PARTS.
IDEALARC (230 / 460 / 575)
NOTE: MACHINES ARE SHIPPED FROM FACTORY CONNECTED FOR 575V
CONNECTION FOR 575 VOLTS, 60 HZ.
3. CONNECT TERMINAL MARKED TO SYSTEM GROUND PER NATIONAL ELECTRIC CODES.
1. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H1 & H3 PILOT
TRANSFORMER LEADS TO THE INPUT SIDE OF CR1 CONTACTOR AS SHOWN.
2. INSULATE UNUSED H2, H4 LEAD TERMINALS SEPERATELY TO PROVIDE
AT LEAST 600V INSULATION.
CONNECTION FOR 460 VOLTS, 60 HZ.
3. CONNECT TERMINAL MARKED TO SYSTEM GROUND PER NATIONAL ELECTRIC CODES.
1. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H1 & H2 PILOT
TRANSFORMER LEADS TO THE INPUT SIDE OF CR1 CONTACTOR AS SHOWN.
2. INSULATE UNUSED H3, H4 LEAD TERMINALS SEPERATELY TO PROVIDE
AT LEAST 600V INSULATION.
CONNECTION FOR 230 VOLTS, 60 HZ.
3. CONNECT TERMINAL MARKED TO SYSTEM GROUND PER NATIONAL ELECTRIC CODES.
RECONNECT
PANEL
4. CONNECT TRANSFORMER LEADS 1, 2, 3, 4 & 7, 5 & 8, 6 & 9 TO RECONNECT PANEL.
5. TAPE SEPERATELY TO PROVIDE AT LEAST 600V INSULATION 13, 14, 15, 16, 17, 18.
TAPE INSULATED UNUSED LEADS TOGETHER AWAY FROM LIVE METAL PARTS.
4. CONNECT TRANSFORMER LEADS 1 & 7, 2 & 8, 3 & 9, 4 & 5 & 6, TO RECONNECT PANEL.
5. TAPE SEPERATELY TO PROVIDE AT LEAST 600V INSULATION 13, 14, 15, 16, 17, 18.
TAPE INSULATED UNUSED LEADS TOGETHER AWAY FROM LIVE METAL PARTS.
18
17
16
6
15
5
14
4
13
9
8
7
32
1
H4
GND
H2
INPUT
LINES
L1
H1
L2
L3
{
CR1
V
U
W
CONTACTOR
H3
PILOT
TRANSF.
RECONNECT
PANEL
3
2
1
6
9
5
8
4
7
15
14
13
1817
16
H4
GND
H3
INPUT
LINES
L1
H1
L2
L3
{
CR1
V
U
W
CONTACTOR
H2
PILOT
TRANSF.
RECONNECT
PANEL
6
5
4
9
3
8
2
7
1
15
14
13
1817
16
IMPORTANT: CHANGE LINK POSITIONS AND PILOT TRANSFORMER CONNECTIONS
.
5-26-95
FIGURE A.6 - OUTPUT TERMINAL CONNECTIONS
1. NEGATIVE (-) WELDING CABLE CONNECTION
2. POSITIVE (+) WELDING CABLE CONNECTION
3. CABLE STRAIN RELIEF HOLE LOCATION