ESAB LAF Series User Manual

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Parallel connection of
LAF-welding power source
Instruction manual

ESAB LAF Series Specifications

General

Duty Cycle	100% at rated current (depending on model)
Input Frequency	50/60 Hz
Current Range	30-500 A
Input Voltage	380-415V/440-460V
Output Current Range	30-500 A
Efficiency	85%
Cooling	Water-cooled (depending on model)
Power Factor	0.93

Summary

SAFETY

INTRODUCTION

General

Introduces parallel connection of LAF welding power sources and current distribution methods.

Connection instructions for two parallel-connected welding power sources and one PEK control box

Detailed step-by-step guide for connecting two welding power sources with a PEK control box.

Location Drawing

Location drawing - Welding Power Source LAF 631

Illustrates the internal component layout for the LAF 631 welding power source.

Location drawing - Welding Power Source LAF 1001

Illustrates the internal component layout for the LAF 1001 welding power source.

Location drawing - Welding Power Source LAF 1251/1601

Illustrates the internal component layout for the LAF 1251/1601 welding power sources.

Connection in Parallel Using Six-Thyristor Operation

DIAGRAM

SPARE PARTS LIST

ESAB subsidiaries and representative offices