Section 4 − Installation; Specifications; Duty Cycle And Overheating - Miller Electric Subarc DC 800 Owner's Manual

4-1. Specifications

Rated
IP
Model Welding
Rating
Output
650 A @ 44
650 Volts DC,
21M
Amp 100% Duty
Cycle
*While idling
( ) Indicates specification differences for CE models

4-2. Duty Cycle And Overheating

Overheating
OM-236 684 Page 14
SECTION 4 − INSTALLATION
Amperage/
Max
Voltage
OCV−DC
Range DC
72 (70) VDC
50 − 815 A
In
In CC Mode
CC Mode
70 (66) VDC
10 − 65 V In
In
CV Mode
CV Mode
100% Duty Cycle
Continuous Welding
0
15
Minutes
Amperes Input at Rated Load Output,
50 or 60 Hz, Three-Phase
230 380 400 440
V V V V
126 77 73 66
3.8* 1.9* 1.8* 1.6*
OR
Reduce Duty Cycle
460 520 575
V V V KVA
63 54 50.4 50
1.9* 1.1* 1.4* 1.52*
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
A/V
duty1 4/95 / Ref. 168 918
KW
34.8
0.76*