Miller Electric 452 Owner's Manual download pdf (Page 13)

OM-203 860 Page 9

SECTION 2 – INSTALLATION

2-1. Specifications

Rated

Amperes Input at Rated Load Output, 50 or 60 Hz,

Three-Phase

Model

Welding

Output

Voltage

Range DC

Max OCV

DC

200 V 230 V 380 V 400 V 440 V 460 V 575 V KVA KW

450 Amp

450 A @ 38

(36.5) Volts

DC, 100%

Duty Cycle

10 – 38 48

72

3.2*

63

2.7*

39

2.6*

37

2.2*

33

2.1*

32

1.4*

25

1.1*

25.1

1.09*

21.1

0.26*

*While idling

2-2. Duty Cycle And Overheating

Continuous Welding

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.

Y Exceeding duty cycle can

damage unit and void

warranty.

Overheating

0

15

V

OR

Reduce Duty Cycle

Minutes

duty1 4/95 / Ref. 168 918

100% Duty Cycle

WELD AMPERES

% DUTY CYCLE

300

400

600

800

1000

40 50 60 70 80 90 100

RATED OUTPUT

1 ... 12 13 14 ... 68

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