Section 3 − Introduction; Specifications; Duty Cycle And Overheating - Miller Electric 625 Owner's Manual

3-1. Specifications

Rated Welding Output
1000 A at 36 VDC,
3-Phase
27% Duty Cycle
*While idling
**See Section 4-2 for additional information.

3-2. Duty Cycle And Overheating

0.750
0.625
0.500
0.375
0.250
0.125
0.000
Overheating
SECTION 3 − INTRODUCTION
Amperage Max. Open-
Range in Range in Circuit Circuit
CC Mode Voltage
50−1000A 70 VDC
16 30
NUMBER OF STUDS IN ONE MINUTE
27% Duty Cycle
.75 second Welding
0
Minutes
RMS Amps Input at Rated Load
Output, 60 Hz 3-Phase at NEMA
Load Voltages and Class I Rating
480 V
55
(0.10*)
40 60
3.00 seconds Resting
15
OR
Reduce Duty Cycle
575 V
KVA
45 46
(0.08*) (0.09*)
Y Exceeding duty cycle can
damage unit and
warranty.
Percent duty cycle = 1.7 times the
number of 1 second (1000ms)
loads/outputs per minute, without
overheating. The one second load
is the rated output.
If unit overheats, output stops. A
HLP 3 message (see Section 8-4)
is displayed, and cooling fan runs.
Wait fifteen minutes for unit to cool.
Reduce amperage or duty cycle be-
fore welding.
A or V
sduty1 5/95 / SA-207 877
OM-216 244 Page 9
KW
42
(0.04*)
void