Miller Electric Millermatic 350 - Manual (Page 15)

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A complete Parts List is available at www.MillerWelds.com
OM-1327 Page 11
SECTION 3 − INSTALLATION
3-1. Specifications
Rated Output
Max. Open
Circuit 60 Hz
Amps Input at Rated Output
Rated Output Circuit
Voltage
60 Hz
200 V 230 V 460 V 575V KVA KW
300 A at
32 VDC,
60% Duty 350 A at
32 VDC,
40% Duty 90
Single-Phase
69
(1.7*) 61
(1.5*) 30
(0.75*) 24
(0.5*) 13.1 11.2
60% Duty
Cycle 40% Duty
Cycle
Three-Phase
34
(1.7*) 30
(1.5*) 15
(0.75*) 12
(0.5*) 11.6 11.5
* While idling
Wire Type and Diameter Wire Feed Speed Dimensions Net Weight
Solid Steel Stainless Steel Aluminum 50−700 IPM
(1.3−17.8 m/min) H: 34 in (864 mm)
W: 19 in (483 mm) 181 lb
(82 kg)
.023 − .045 in
(0.8 − 1.1 mm) .030 − .045 in
(0.8 − 1.1 mm) .035 − .047 in
(0.9 − 1.2 mm)
(1.3−17.8 m/min) W: 19 in (483 mm)
D: 41 in (1041 mm) (82 kg)
Operating Temperature Range: −20C to +40C Storage Temperature Range: -30C to + 50C
3-2. Duty Cycle And Overheating
6 Minutes Welding 4 Minutes Resting
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
If unit overheats, thermistors open,
output stops, 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.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
60% Duty Cycle At 300 Amperes 40% Duty Cycle At 350 Amperes
sduty1 5/95 / 217 442-A
4 Minutes Welding 6 Minutes Resting
10 15 20 25 30 40 50 60 70 80 90 100
100
150
200
225
250
300
400
500
% DUTY CYCLE
WELDING AMPERES