Miller Electric 3080 - Manual (Page 13)

OM-2225 Page 9
SECTION 3 − INSTALLATION
3-1. Specifications
Amperes Input at
Rated Load
Output 60 Hz
Rated
Output
Type of
Output
Plasma
Gas
Rated
Cutting
Capacity
Maximum
Open-Circuit
Voltage DC
230 V 460 V KVA KW
Output Output Gas
Capacity Voltage DC
Single-
Phase
63 −− 14.6 13.9
80 A @ 140
Volts DC,
40% Duty
Cycle
Direct
Current,
Straight
7.2 CFM
(204 L/min)
At 80 PSI
(552 kPa)
7/8 in
(22 mm) 350
3-Phase 35 18 14.1 13.4
80 A @ 140
Volts DC,
60% Duty
Cycle
Straight
Polarity
(DCEN)
(552 kPa)
Air Or
Nitrogen
Only
(22 mm)
At 10 IPM
350
3-2. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can cut 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 cutting.
Y Exceeding duty cycle can
damage unit and void war-
ranty.
Three-Phase Input Power:
60% Duty Cycle
Overheating
0
15
A
OR
Reduce Duty Cycle
Minutes
duty1 4/95
Single-Phase Input Power:
40% Duty Cycle
4 Minutes Cutting 6 Minutes Resting
6 Minutes Cutting 4 Minutes Resting