SECTION 4 − INSTALLATION

4-1.

Specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amperes Input at Rated

Amperes Input at Rated

 

 

Model

Rated Welding

Amperage/Voltage

Max

Load Output,

Load Output,

 

 

60 Hz, Three-Phase

50 Hz, Three-Phase

 

 

Output

Range DC

OCV−DC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

230 V

460 V

575 V

380 V

400 V

440 V

KVA

KW

 

 

 

 

 

 

 

 

 

 

 

 

 

1000 A @ 44

100 − 1250 A In CC

 

180

90

72

 

 

 

73

53

1000

Mode

 

 

 

 

Volts DC, 100%

 

66 VDC

5.8*

2.9*

2.4*

 

 

 

3.2*

0.5*

Amp

10 − 60 V In CV

 

 

 

Duty Cycle

 

 

 

 

 

 

 

 

 

 

 

Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

900 A @ 44

100 − 1250 A In CC

 

 

 

 

101

96

87

66.3

48.4

1250

Mode

 

 

 

 

Volts DC, 100%

 

66 VDC

 

 

 

5.2*

5.0*

4.5*

3.4*

0.56*

Amp

10 − 60 V In CV

 

 

 

Duty Cycle

 

 

 

 

 

 

 

 

 

 

 

Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*While idling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4-2. Duty Cycle And Overheating

 

 

 

 

 

 

 

 

 

 

2000

 

 

 

 

 

 

 

Duty Cycle is percentage of 10 min-

 

 

 

 

 

 

 

 

utes that unit can weld at rated load

 

1800

 

 

 

 

 

 

 

 

1600

 

 

 

 

 

 

 

without overheating.

 

 

 

1400

 

 

 

 

 

DIMENSION 1000

If unit overheats, thermostat(s)

 

1200

 

 

 

 

 

opens, output stops, and cooling

 

 

 

 

 

 

 

 

 

1000

 

 

 

DIMENSION 1250

 

 

fan runs. Wait fifteen minutes for

WELD

 

 

 

 

 

 

 

unit to cool. Reduce amperage or

 

 

 

 

 

 

 

 

800

 

 

 

 

 

 

 

duty cycle before welding.

 

 

 

 

 

 

 

 

 

 

 

700

 

 

 

 

 

 

 

Y Exceeding duty

cycle

can

AMPERES

 

 

 

 

 

 

 

damage

unit

and

void

 

 

 

 

 

 

 

 

warranty.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600

 

 

 

 

 

 

 

 

 

 

 

 

500

 

 

 

 

 

 

 

 

 

 

 

 

10

20

30

40

50

60

70

80 90 100

 

 

 

 

 

 

% DUTY CYCLE

 

 

 

 

 

 

 

 

 

 

100% Duty Cycle

 

 

 

 

 

 

 

 

 

 

 

Continuous Welding

 

 

 

 

 

 

 

 

Overheating

 

 

0

 

 

 

 

 

A/V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OR

 

 

 

 

 

 

 

Minutes

 

 

Reduce Duty Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

duty1 4/95 / SA-191 157-A

OM-2223 Page 12

 

 

 

 

 

 

 

 

 

 

 

 

Page 16
Image 16
Miller Electric 1250, 1000 manual Installation, Specifications, Duty Cycle And Overheating

1250, 1000 specifications

Miller Electric is a renowned name in the welding and fabrication industry, providing high-quality machines and equipment that cater to a range of applications. Among its impressive line of products are the Miller Electric 1000 and 1250 arc welding machines, designed to offer exceptional performance in both industrial and commercial environments.

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