1. specifications, 2. duty cycle and overheating – Hobart Welding Products STELLAR AT OM-2208 User Manual

Page 13

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OM-2208 Page 9

SECTION 2 – INTRODUCTION

2-1. Specifications

Voltage

Amperage

Max. Open-

RMS Amps Input at Rated Load

Output, 60 Hz 3-Phase at NEMA Load

Voltages and Class I Rating

Rated Output at

60% Duty Cycle

Range in

CV Mode

Range in

CC Mode

Circuit

Voltage

230 V

460 V

575 V

KVA

KW

300 A at 32 VDC, 3-Phase

10–35 V

5–400 A

90 VDC

30.5

(0.21*)

18.9

(0.10*)

15.2

(0.08*)

12.2

(0.09*)

11.6

(0.04*)

225 A at 29 VDC, 1-Phase

47.4

(0.34*)

24.5

(0.14*)

– –

11.3

(0.09*)

7.6

(0.04*)

*While idling

**See Section 3-5 for additional information.

6 Minutes Welding

4 Minutes Resting

2-2. Duty Cycle And Overheating

Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.

If unit overheats, output stops, a
Help message is displayed (see
Section 5-2), and cooling fan runs.
Wait fifteen minutes for unit to cool.
Reduce amperage or voltage, or
duty cycle before welding.

Y

Exceeding duty cycle can
damage unit and void
warranty.

60% Duty Cycle

Overheating

0

15

A or V

OR

Reduce Duty Cycle

Minutes

sduty1 5/95 / SA-207 877

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