Tweco Fabricator 141i Operating Manual Instrukcja Użytkownika Pobierz pdf (Strona 27)

Fabricator 141i

Manual 0-51

2-3 INTRODUCTION

2.08 Duty Cycle

The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated weld-

ing current output without exceeding the temperature limits of the insulation of the component parts. To explain

the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is designed to

operate at a 20% duty cycle, 100 amperes at 19 volts. This means that it has been designed and built to provide

the rated amperage (100 A) for 2 minutes, i.e. arc welding time, out of every 10 minute period (20% of 10 minutes

is 2 minutes). During the other 8 minutes of the 10 minute period the Welding Power Source must idle and be

allowed to cool.

100

0102030405060708090100 110120 130140 150

Fabricator 141i

Welding Current (amps)

Duty Cycle (percentage)

Safe

Operating

Region

STICK (SMAW)/ MIG (GMAW/ FCAW)

TIG (GTAW)

Art # A-11276_AB

Figure 2-1: Fabricator 141i Duty Cycle

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 103 104

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Tweco Fabricator 141i Operating Manual Instrukcja Użytkownika Strona 27