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Performance Data
FUEL CONSUMPTION CURVE
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
0 50 100 150 200 250 300 350 400 450 500 550 600
DC WELD AMPERES AT 100% DUTY CYCLE
US Gal./Hr.
VOLT/AMP CURVE – STICK MODE
0
20
40
60
80
100
0 100 200 300 400 500 600 700 800 900 1000
DC AMPERES
DC VOLTS
VOLT/AMP CURVE – AC TIG MODE
0
20
40
60
80
100
0 100 200 300 400 500 600 700
AC AMPERES
AC VOLTS
WELD AND AIR
WELD ONLY
IDLE WITH AIR
IDLE
AIR SUPPLY CURVE
0
20
40
60
80
100
120
140
0 10203040506070
CFM
PSI
IDLE
300–Max
185–525
125–400
55–125
VOLT/AMP CURVE – MIG MODE
0
10
20
30
40
50
60
70
80
90
100
0 100 200 300 400 500 600 700 800 900 1000
DC AMPERES
DC VOLTS
MAX
MIN
VOLT/AMP CURVE – DC TIG MODE
0
20
40
60
80
100
0 100 200 300 400 500 600
DC AMPERES
DC VOLTS
60–450
40–330
30–220
20–110
GENERATOR POWER CURVE OPTION
180
200
220
240
260
280
010203040506070
AC AMPERES
AC VOLTS
12 kW
1-PHASE
BATTERY CHARGE OUTPUT
0
5
10
15
20
25
30
35
40
45
50
0 100 200 300 400 500 600 700 800 900 1000
DC AMPS
DC VOLTS
20 kW
3-PHASE
Ingersoll-Rand Rotary Screw Air
Compressor
This industrial grade compressor, has a life
expectancy of 30,000 hours, is belt driven and
utilizes an electric clutch control to allow the
compressor to be turned off if not needed.
This design increases efficiency, reduces fuel
consumption and saves you money at the
pump. An automatic belt tensioner provides
proper belt tension even after years of service.
The compressor is protected by a high
temperature shutdown switch.
Toolless
Generator
Brushes
100% copper-
wound
generator
features quick
and easy brush and slip ring inspection.
Brushes can be removed and/or replaced
in a matter of seconds.
The Vault
Superior Circuit Board Design
Miller’s critical circuit boards are engineered
to carry
low power
and
low heat
to reduce
thermal stress and minimize expansion and
contraction. In contrast, our competitor’s
boards carry
high power
and
high heat
, making
them more vulnerable to failure.
“The Vault” Makes Upgrading to Miller CC/CV
Units Worry-Free
Concerns with circuit board reliability have
resulted in some operators steering clear of
CC/CV welder/generators — even though they
offer a superior arc and multiple welding
processes. Miller’s circuit board reliability isn’t
a concern since all PRO 300 and Big Blue
multiprocess industrial engine drives feature
the Vault.
Created out of two aluminum halves sealed
with silicone, as well as watertight harness
connections, the Vault provides a clean circuit
board environment, protecting the electronics
— and controlling output — in heavy industrial
applications. No other competitor protects their
electronics with a sealed vault, leaving critical
circuit boards exposed to harsh elements that
can disrupt the machine’s electronics, and
therefore, its operation.