Miller Electric 1000 - Manual (Page 15)

OM-2221 Page 11
SECTION 3 − INSTALLATION
3-1. Specifications
Voltage Amperage Max Open-
RMS Amps Input at Rated Load Output, 3-Phase at
NEMA Load
Voltages and Class I Rating
AC or DC
Rated Output
Voltage
Range in
CV Mode
Amperage
Range in
CC Mode
Max. Open-
Circuit
Voltage
380/400/415 V
(50/60 Hz)
460 V
(60 Hz)
500 V
(50/60 Hz)
575 V
(60 Hz) KVA KW
1000 A at 44 V,
100% Duty Cycle;
25−44 V 250−1250 A 71 V
143 124 114 100 98 53 100% Duty Cycle;
1250 A at 44 V,
60% Duty Cycle
25−44 V 250−1250 A 71 V
143
(3*)
124
(3*)
114
(3*)
100
(3*)
98
(2.37*)
53
(0.95*)
*While idling
3-2. Duty Cycle and Overheating
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, high temperature
shutdown light turns On, thermo-
stat(s) opens, output stops, and
cooling fan runs. Wait fifteen min-
utes for unit to cool. Reduce amper-
age or duty cycle before welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
Overheating
0
15
A/V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − 181 560
Continuous Welding
100% Duty Cycle At 1000 Amperes