Lincoln Electric SVM104-A Theory of Operation, Input Line Voltage and Main Transformer

		E-1	THEORY OF OPERATION
Return to Section TOC	Return to Master TOC		FIGURE E.2. - Input Line Voltage and Main Transformer
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Section TOC	Master TOC	INPUT LINE VOLTAGE AND MAIN
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		TRANSFORMER
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		The desired single-phase input power is connect-			isolated auxiliary windings (115vac, 24vac and
		ed to the Pro-Cut 60 through a line switch located			12vac). The 115vac winding supplies power for
		on the front panel of the machine.			the cooling fan and powers the air solenoid , the
					CR2 relay and the high voltage transformer via
		A reconnect panel allows the user to configure the			the control board. One 24vac winding produces
		machine for the desired input voltage.		This AC	supply power for the control board.	The other
		input voltage is applied to the primary of the main			24vac winding is applied to the control board and
TOC	TOC	transformer. This main transformer changes the			is used in the Pro-Cut 60 torch safety and trigger
		input voltage and current to the voltage and cur-			network. The 12vac winding is required to oper-
		rent levels	necessary for plasma cutting. In addi-		ate the power board.
to Section	to Master
		tion, the	main transformer also has	several
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			Diagram are the subject of discussion

PRO-CUT 60