Miller Subarc DC 1250 Manuale d'uso - Pagina 16

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Miller Subarc DC 1250 Manuale d'uso

4-1. Specifications

Rated Welding
Amperage/Voltage
Model
Output
Output
100 − 1250 A In CC
1000 A @ 44
1000
1000
Volts DC, 100%
Volts DC, 100%
Amp
Amp
Duty Cycle
100 − 1250 A In CC
900 A @ 44
1250
1250
Volts DC, 100%
Volts DC, 100%
Amp
Amp
Duty Cycle
*While idling

4-2. Duty Cycle And Overheating

2000
1800
1600
1400
1200
1000
800
700
600
500
10
Overheating
OM-2223 Page 12
SECTION 4 − INSTALLATION
Max
Range DC
Range DC
OCV−DC
OCV−DC
Mode
66 VDC
66 VDC
10 − 60 V In CV
Mode
Mode
66 VDC
66 VDC
10 − 60 V In CV
Mode
20
% DUTY CYCLE
100% Duty Cycle
Continuous Welding
0
Minutes
Amperes Input at Rated
Load Output,
60 Hz, Three-Phase
230 V 460 V 575 V 380 V 400 V 440 V
180
90
72
5.8*
5.8*
2.9*
2.9*
2.4*
2.4*
DIMENSION 1000
DIMENSION 1250
30
40
50
60
70
15
Reduce Duty Cycle
Amperes Input at Rated
Load Output,
50 Hz, Three-Phase
KVA
101
96
87
66.3
5.2*
5.2*
5.0*
5.0*
4.5*
4.5*
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
warranty.
80
90
100
A/V
OR
duty1 4/95 / SA-191 157-A
KW
73
53
3.2*
3.2*
0.5*
0.5*
48.4
3.4*
3.4*
0.56*
0.56*
and
void