Section 4 − Specifications; Serial Number And Rating Label Location; Unit Specifications; Duty Cycle And Overheating - Miller XMT 350 CC/CV Auto-Line Owner's Manual

4-1. Serial Number And Rating Label Location

The serial number and rating information for this product is located on the rear. Use rating label 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. Unit Specifications

Input
Power
Rated Output
3-Phase 350 A at 34
VDC, 60%
Duty Cycle
1-Phase 300 A at 32
VDC, 60%
Duty Cycle*
*See Section 4-3 for Duty Cycle Rating.

4-3. Duty Cycle And Overheating

500
425
400
350
300
250
200
150
100
10
15
Overheating
OM-2247 Page 14
SECTION 4 − SPECIFICATIONS
Amperage
Voltage
Range in
Range in CV Mode CC Mode
10−38 V 5−425 A
20 30 40 50 60 70 80 90 100
25
% DUTY CYCLE
60% Duty Cycle
6 Minutes Welding
0
Minutes
RMS Amps Input at Rated Load Output,
Max.
60 Hz 3-Phase at NEMA Load Voltages
Open-
and Class I Rating
Circuit
208 V 230 V
Voltage
75 VDC 40.4 36.1
60.8 54.6
Duty Cycle is percentage of 10 minutes that
unit can weld at rated load without overheating.
If unit overheats, output stops, a Help mes-
sage is displayed and cooling fan runs. Wait fif-
teen minutes for unit to cool. Reduce amper-
age or voltage, or duty cycle before welding.
.
NOTICE − Exceeding duty cycle can damage
unit and void warranty.
THREE PHASE
OPERATION
6AWG POWER CORD
8AWG POWER CORD
4 Minutes Resting
15
OR
Reduce Duty Cycle
400 V 460 V 575 V
KVA
20.6 17.8 14.1 14.2
29.7 25.4 19.9 11.7
Single Phase Operation: The unit is sup-
plied with a 8 AWG power cord. The
rated output with 8 AWG is 300 amps,
32 volts at 40% duty cycle. To achieve
60% duty cycle change cord to 6 AWG.
SINGLE PHASE
OPERATION
A or V
Ref. 216 568-A
KW
13.6
11.2