Input Power Supply Connections; Reconnect Procedure - Lincoln Electric CV-655 Operator's Manual

A-4

INPUT POWER SUPPLY CONNECTIONS

A qualified electrician should connect the input power
supply leads.
1. Follow all national and local electrical codes.
2. Use a three-phase line.
3. Remove the input access door at upper rear of the
machine.
4. Follow input supply connection diagram located
on the inside the door.
5. Connect the three-phase AC power supply leads
L1, L2, and L3 to the input contactor
terminals in the input box assembly. See Figure
A.1.
Do not operate with covers
removed
Disconnect input power before
servicing
W CR1
L3
INPUT
L2
V
LINES
CONTACTOR
L1
U
H1
GND
H3
CONTROL
TRANSF.
LINKS
CR1
L3
W
INPUT
L2
V
LINES
CONTACTOR
L1
U
H1
GND
H2
CONTROL
TRANSF.
LINKS
THE LINCOLN ELECTRIC CO., CLEVELAND OHIO U.S.A.
FIGURE A.2 Dual Voltage Machine Reconnection Procedure
INSTALLATION
Do not touch electrically live parts
Only qualified persons should install,
use or service this equipment
CONNECTION FOR HIGHEST RATING PLATE VOLTAGE
H2
CONNECTION FOR LOWEST RATING PLATE VOLTAGE
H3

RECONNECT PROCEDURE

Electric Shock Can Kill
• Disconnect input power before per-
forming this procedure.
------------------------------------------------------------------------
Multiple voltage machines are shipped connected to
the highest input voltage listed on the machine's rating
plate. Before installing the machine, check that the
reconnect panel in the input box assembly is connect-
ed for the proper voltage.
Failure to follow these instructions can cause immedi-
ate failure of components within the machine.
------------------------------------------------------------------------
When powering welder from generator be sure to turn
off welder first, before generator is shut down, in order
to prevent damage to welder!
To reconnect a multiple voltage machine to a different
voltage, remove input power and follow the input con-
nection diagram located on the inside of case back
input access door.
1. For dual voltage sample machine reconnect
instructions, see Figure A.2.
DUAL VOLTAGE MACHINE
INPUT SUPPLY CONNECTION DIAGRAM
IMPORTANT: CHANGE LINK POSITIONS AND CONTROL TRANSFORMER CONNECTIONS.
NOTE: MACHINES ARE SHIPPED FROM FACTORY CONNECTED FOR OVER 300 VOLTS
1 . T U R N O F F T H E I N P U T P O W E R U S I N G T H E D I S C O N N E C T S W I T C H A T T H E F U S E B O X .
2 . D I S C O N N E C T A N D I N S U L A T E T H E H 2 L E A D T E R M I N A L W I T H T A P E T O P R O V I D E A T
L E A S T 6 0 0 V O L T I N S U L A T I O N .
3 . C O N N E C T L 1 , L 2 & L 3 I N P U T S U P P L Y L I N E S A N D H 1 & H 3 C O N T R O L T R A N S F O R M E R
L E A D S T O T H E I N P U T S I D E O F C R 1 C O N T A C T O R A S S H O W N .
4 . C O N N E C T T E R M I N A L M A R K E D T O G R O U N D P E R L O C A L A N D N A T I O N A L E L E C T R I C
C O D E S .
5 . M O U N T T H E L I N K S I N T H E P O S I T I O N S S H O W N ; D O U B L E O R T R I P L E S T A C K T H E L I N K S
I N T H R E E P O S I T I O N S . L O O P T H E F L E X L E A D I N T H E P O S I T I O N S H O W N ; P O S I T I O N I N G
T H E L U G S T O M A I N T A I N M A X I M U M C L E A R A N C E T O T H E L I N K S . I N S T A L L A N D T I G H T E N
A L L O F T H E H E X N U T S .
1 . T U R N O F F T H E I N P U T P O W E R U S I N G T H E D I S C O N N E C T S W I T C H A T T H E F U S E B O X .
2 . D I S C O N N E C T A N D I N S U L A T E T H E H 3 L E A D T E R M I N A L W I T H T A P E T O P R O V I D E A T
L E A S T 6 0 0 V O L T I N S U L A T I O N .
3 . C O N N E C T L 1 , L 2 & L 3 I N P U T S U P P L Y L I N E S A N D H 1 & H 2 C O N T R O L T R A N S F O R M E R
L E A D S T O T H E I N P U T S I D E O F C R 1 C O N T A C T O R A S S H O W N .
4 . C O N N E C T T E R M I N A L M A R K E D T O G R O U N D P E R L O C A L A N D N A T I O N A L E L E C T R I C
C O D E S .
5 . M O U N T T H E L I N K S I N T H E P O S I T I O N S S H O W N . C O N N E C T T H E F L E X L E A D A S S H O W N ;
P O S I T I O N I N G T H E L U G S T O M A I N T A I N M A X I M U M C L E A R A N C E T O T H E L I N K S .
I N S T A L L A N D T I G H T E N A L L O F T H E H E X N U T S .
CV-655
WARNING
CAUTION
M18225
A-4
D - U F