Section 3 - Installation; Specifications; Duty Cycle And Overheating - Miller Spectrum 3080 Owner's Manual

3-1. Specifications

Amperes Input at
Rated Load
Model/Rated
Output 50/60 Hz,
Output
Three-Phase
400 V
3080 / 80 A @
140 Volts DC,
23
60% Duty Cycle
2255 / 55 A @
140 Volts DC,
16
60% Duty Cycle

3-2. Duty Cycle And Overheating

6 Minutes Cutting
Overheating
OM-193 410 Page 12
SECTION 3 – INSTALLATION
KVA KW
17.2 15.3
11.9 9.9
Three-Phase Input Power:
60% Duty Cycle
4 Minutes Resting
0
Minutes
Rated Cutting Type of
Capacity Output
1-1/4 in
(30 mm) Direct
At 10 IPM Current,
Straight
7/8 in
Polarity
(22 mm)
(DCEN)
At 10 IPM
15
OR
Reduce Duty Cycle
Maximum
Open-Circuit
Plasma Gas
Voltage DC Voltage DC
Air Or Nitrogen Air Or Nitrogen
350
Only
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.
A
duty1 4/95