Lincoln Electric SVM188-A Electrical Input Connections, Fuse and Wire Sizes, Ground Connection

		A-4	INSTALLATION			A-4
TOC	TOC	ELECTRICAL INPUT CONNECTIONS		INPUT POWER SUPPLYCONNECTIONS
				A qualified electrician should connect the input power
		Before installing the machine check that the input sup-		supply leads.
Section	Master	ply voltage, phase, and frequency are the same as the		1.	Follow all national and local electrical codes.
		voltage, phase, and frequency as specified on the
to	to	welder Rating Plate located	on the Case Back	2.	Use a three-phase line.
		Assembly. Input power supply entry is through the hole
Return	Return
		in the Case Back Assembly. See Figure A.2 for the		3.	Remove Input Access Door at upper rear of
		location of the machine’s input cable entry opening,
		Input Contactor (CR1), and reconnect panel assembly			machine.
		for dual voltage machines.

				4. Follow Input Supply Connection Diagram located
		INPUT SUPPLY			on the inside of the door.
		CABLE ENTRY	INPUT	5.	Connect the three-phase AC power supply leads
		OPENING
			CONTACTOR (CR1)
					L1, L2, and L3 to the input	contactor
			RECONNECT		terminals in the Input Box Assembly by passing
TOC	TOC				them thru the three aligned .50” diameter holes in
			PANEL ASSEMBLY		the baffle and tighten them in the terminal connec-
SectiontoReturn	MastertoReturn				tors. Be sure to close the baffle by inserting the tab
					into the slot in the baffle. See Figure A.3.

FIGURE A.2 - Rear Panel

FUSE AND WIRE SIZES

TOC	TOC	Protect the input circuit with the super lag fuses or
		delay type circuit breakers listed on the Technical
Section	Master	Specifications page of this manual for the machine
		being used. They are also called inverse time or ther-
		mal/magnetic circuit breakers.
				INPUT
to	to	DO NOT use fuses or circuit breakers with a lower amp	CONTACTOR (CR1)
Return	Return
		rating than recommended. This can result in “nuisance”	INPUT POWER SUPPLY
		tripping caused by inrush current even when machine	CABLE WITH BUSHING	RECONNECT
		is not being used for welding at high output currents.	OR BOX CONNECTOR
				PANEL ASSEMBLY

Use input and grounding wire sizes that meet local electrical codes or see the Technical Specifications page in this manual.

GROUND CONNECTION

TOC	TOC	Ground the frame of the machine. A ground
		terminal marked with the symbol ( ) is located inside
Section				Connections
	Master	of the machine. See your local and national electrical
		the Case Back of the machine near	the input contactor.	FIGURE A.3 - Input Power Supply
		Access to the Input Box Assembly is at the upper rear
to	to	codes for proper grounding methods.
Return	Return		DC-600