Miller Electric 575Volt, 460Volt, 230Volt Introduction, Specifications, Duty Cycle And Overheating

SECTION 3 − INTRODUCTION

3-1. Specifications

				RMS Amps Input at Rated
				Load Output, 60 Hz 3-Phase
	Voltage	Amperage	Max. Open-	at NEMA Load Voltages and
Rated Output at				Class I Rating
	Range in	Range in	Circuit
60% Duty Cycle	CV Mode	CC Mode	Voltage	230 V	460 V	KVA**	KW**
300 A at 32 VDC, 3-Phase	10−35 V	5−400 A	90 VDC	30.5	18.9	12.2	11.6
				(0.21*)	(0.10*)	(0.09*)	(0.04*)
225 A at 29 VDC, 1-Phase				47.4	24.5	11.3	7.6
				(0.34*)	(0.14*)	(0.09*)	(0.04*)

*While idling

** Information based on 230 V, 3-phase input line.

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, output stops, a Help message is displayed (see Section 7-3), and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or voltage, or duty cycle before welding.

NOTICE − Exceeding duty cycle can damage unit and void warranty.

60% Duty Cycle

6 Minutes Welding 4 Minutes Resting

Overheating

0	A or V
	15
	OR
Minutes	Reduce Duty Cycle

sduty1 5/95 / SA-207 877

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