Lincoln Electric SVM151-A service manual Product Description, Versatile, Portable

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B-3	B-3
OPERATION
PRODUCT DESCRIPTION
The Multi-Weld 350 Arc Converter (K1735-1) is part of	control of up to 350A continuous with each Converter
a Multi-Weld system, ideally suited for construction site	arc for + polarity stick and wire processes, as well as
welding. It uses a single DC power source as the	for arc-air gouging. (See Figure B.1.)
only input supply and provides independent, full-range

FIGURE B.1 – MULTI-WELD SYSTEM

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The Multi-Weld 350 is a DC to DC Converter that con- verts higher voltage/lower current input power to lower voltage/higher current output power with over 90% effi- ciency.

For example, a single 600A continuous rated 70-80V power source could supply up to five Multi-Weld 350 converters, each wire welding at 300 amps, or about ten converters for stick welding at 150 amps with 26- 29V at the arcs.

The Multi-Weld 350 Arc Converter is a single “world” model built to IEC and CSA standards and meeting the specific needs inherent to construction site welding:

Versatile

•Constant Current (CC) mode for stick and gouging. Includes Hot Start and Arc Force controls to optimize CC performance, and can be paralleled for higher capacity welding and arc gouging.

•Constant Voltage (CV) mode for positive polarity cored and solid wire welding with arc-powered feed- ers (such as the LN-25).

Portable

•The Multi-Weld 350 can be moved quickly. The light- weight Converter is easy to carry or pull and is small enough to fit through a 15" (38 cm) diameter or 12" x 16" (31x 41 cm) elliptical man-hole.

•The Converter is powered by the welding cable from the DC power source, without the safety hazard of high AC input supply voltages.

•Welding controls are near the arc without long con- trol cables, and a receptacle is provided for an optional remote for even closer user output control.

MULTI-WELD 350