Miller DIMENSION NT 450 WCC, Owner'S Manual

Page: 16 / 44

OM-240 044 Page 12
SECTION 4 − INSTALLATION
4-1. Serial Number And Rating Label Location
The serial number and rating information for the power source is located on the front or the rear of the machine. Use the rating labels to determine
input power requirements and/or rated output. For future reference, write serial number in space provided on back cover of this manual.
4-2. Specifications
Model
Rated Welding
Output
Amperage/
Voltage Range
Max OCV−DC
Amperes Input at Rated Load
Output 50/60 Hz, Three-Phase
230 V 460 V 575 V KVA KW
450 Amp
450 A @ 38 Volts
DC, 100% Duty
Cycle
5 − 500A In CC
Mode
78 VDC In
CC Mode For 60 Hz
57
*2.18
29
*1.04
23
*0.84
22.6
*0.87
21.0
*0.29
10 − 38V In CV
Mode
78 VDC In
CV Mode For 60 Hz
*While idling
4-3. Duty Cycle And Overheating
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.
100% Duty Cycle
Overheating
0
15
A/V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 / 210 976-B
Continuous Welding