Section 3 − Introduction; Specifications; Duty Cycle And Overheating - Miller Electric 230Volt Owner's Manual

3-1. Specifications

Rated Output at Rated Output at
60% Duty Cycle
300 A at 32 VDC, 3-Phase
225 A at 29 VDC, 1-Phase
*While idling
** Information based on 230 V, 3-phase input line.

3-2. Duty Cycle And Overheating

6 Minutes Welding
Overheating
SECTION 3 − INTRODUCTION
Voltage Amperage Max. Open-
Range in Range in Range in Range in
CV Mode CC Mode
10−35 V 5−400 A
60% Duty Cycle
4 Minutes Resting
0
Minutes
RMS Amps Input at Rated
Load Output, 60 Hz 3-Phase
at NEMA Load Voltages and
Class I Rating
Circuit Circuit
230 V
Voltage
90 VDC 30.5
(0.21*)
47.4
(0.34*)
15
OR
Reduce Duty Cycle
460 V
KVA**
18.9 12.2
(0.10*) (0.09*)
24.5 11.3
(0.14*) (0.09*)
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 7-3), and cooling fan runs.
Wait fifteen minutes for unit to cool.
Reduce amperage or voltage, or
duty cycle before welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
A or V
sduty1 5/95 / SA-207 877
OM-188 304 Page 11
KW**
11.6
(0.04*)
7.6
(0.04*)