Miller Electric Invision 456MP manual Specifications, Duty Cycle and Overheating

SECTION 3 − INSTALLATION

3-1.	Specifications
			Maximum	Amperes Input At Rated
Input	Rated Welding	Voltage	Open-	Load Output 60 Hz,				KVA		KW
			Circuit	Three-Phase
Power	Output	Range
			Voltage
				230 V	460 V	575 V	230/460	575	230/460	575
			DC
Three	450 A @ 38 Volts DC,			50.8	27.8	24.4	21.2	24.3	19.2	19.0
	100% Duty Cycle;	10 − 38	95
Phase	565 A @ 43 Volts DC,			(0.14*)	(0.09*)	(0.12*)	(0.06*)	(0.12*)	(0.04*)	(0.07*)
	60% Duty Cycle
*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,	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 At 450 Amperes 60% Duty Cycle At 565 Amperes

Continuous Welding	6 Minutes Welding	4 Minutes Resting
Overheating	0	A/V
	15
		OR
	Minutes	Reduce Duty Cycle

duty1 4/95 − SA-181 560

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