Lincoln Electric IM602-A manual Reconnect Procedure, Input Power Supply Connections

A-4 INSTALLATION 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. For multiple voltage machines, follow the diagram for the voltage that is within 10% of your actual input line voltage.

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.

RECONNECT PROCEDURE

WARNING

Electric Shock Can Kill

•Disconnect input power before perform- ing this procedure.

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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.

CAUTION

Failure to follow these instructions can cause immedi- ate failure of components within the machine. When powering welder from a generator be sure to turn off welder first, before generator is shut down in order to prevent damage to welder.

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To reconnect a multiple voltage machine to a different voltage, remove input power and refer to the input connection diagram located on the inside of case back input access door. Follow the diagram for the voltage that is within 10% of your actual input line voltage.

1.Figure A.2 shows a sample of the reconnect instructions for a dual voltage machine.

Do not operate with covers	Do not touch electrically live parts
removed	Only qualified persons should install,
Disconnect input power before
servicing	use or service this equipment

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

L3	W CR1
INPUT	V
LINES L2
	CONTACTOR
L1	U
GND	H1
	H3
	CONTROL
	TRANSF.

LINKS

CONNECTION FOR HIGHEST RATING PLATE VOLTAGE

	1	. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX.
	2	. DISCONNECT AND INSULATE THE H2 LEAD TERMINAL WITH TAPE TO PROVIDE AT
		LEAST 600 VOLT INSULATION.
	3. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H1 & H3 CONTROL TRANSFORMER
		LEADS TO THE INPUT SIDE OF CR1 CONTACTOR AS SHOWN.
	4	. CONNECT TERMINAL MARKED	TO GROUND PER LOCAL AND NATIONAL ELECTRIC
		CODES.
H2	5. MOUNT THE LINKS IN THE POSITIONS SHOWN; DOUBLE OR TRIPLE STACK THE LINKS
		IN THREE POSITIONS. LOOP THE FLEX LEAD IN THE POSITION SHOWN; POSITIONING
		THE LUGS TO MAINTAIN MAXIMUM CLEARANCE TO THE LINKS. INSTALL AND TIGHTEN
		ALL OF THE HEX NUTS.

				CONNECTION FOR LOWEST RATING PLATE VOLTAGE
					1. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX.
		L3		W CR1	2. DISCONNECT AND INSULATE THE H3 LEAD TERMINAL WITH TAPE TO PROVIDE AT
INPUT					LEAST 600 VOLT INSULATION.
		L2		V	3. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H1 & H2 CONTROL TRANSFORMER
LINES				CONTACTOR	LEADS TO THE INPUT SIDE OF CR1 CONTACTOR AS SHOWN.
		L1		U	4. CONNECT TERMINAL MARKED	TO GROUND PER LOCAL AND NATIONAL ELECTRIC
	GND			H1	CODES.
			H2		5. MOUNT THE LINKS IN THE POSITIONS SHOWN. CONNECT THE FLEX LEAD AS SHOWN;
				H3
				CONTROL	POSITIONING THE LUGS TO MAINTAIN MAXIMUM CLEARANCE TO THE LINKS.
					INSTALL AND TIGHTEN ALL OF THE HEX NUTS.
				TRANSF.
LINKS						D-UF
THE LINCOLN ELECTRIC CO., CLEVELAND OHIO U.S.A.						M18225

FIGURE A.2 Dual Voltage Machine Reconnection Procedure

DC-655