Section 3 − Installation; Specifications; Duty Cycle And Overheating - Miller Electric Invision 456MP Owner's Manual

3-1. Specifications

Input Rated Welding
Power Power Output Output
450 A @ 38 Volts DC,
Three 100% Duty Cycle;
Phase 565 A @ 43 Volts DC,
60% Duty Cycle
*While idling

3-2. Duty Cycle and Overheating

100% Duty Cycle At 450 Amperes
Continuous Welding
Overheating
SECTION 3 − INSTALLATION
Maximum
Amperes Input At Rated
Open- Load Output 60 Hz,
Voltage
Circuit
Three-Phase
Range Range
Voltage Voltage
230 V
DC
50.8
10 − 38 95
(0.14*)
0
Minutes
KVA
460 V 575 V 230/460
27.8 24.4 21.2
(0.09*) (0.12*) (0.06*)
60% Duty Cycle At 565 Amperes
6 Minutes Welding
15
OR
Reduce Duty Cycle
KW
575 230/460 575
24.3 19.2 19.0
(0.12*) (0.04*) (0.07*)
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.
4 Minutes Resting
A/V
duty1 4/95 − SA-181 560
OM-193 267 Page 11