Miller Electric Millermatic 350, 350, 350P manual Specifications, Duty Cycle And Overheating

.A complete Parts List is available at www.MillerWelds.com

SECTION 3 − INSTALLATION

3-1. Specifications

Max. Open

Amps Input at Rated Output

Rated Output

Circuit

60 Hz

Voltage

200 V

230 V

460 V

575V

KVA

KW

300 A at

350 A at

90

Single-Phase

69

61

30

24

13.1

11.2

32 VDC,

32 VDC,

(1.7*)

(1.5*)

(0.75*)

(0.5*)

60% Duty

40% Duty

34

30

15

12

11.6

11.5

Cycle

Cycle

Three-Phase

(1.7*)

(1.5*)

(0.75*)

(0.5*)

* While idling

Wire Type and Diameter

Wire Feed Speed

Dimensions

Net Weight

Solid Steel

Stainless Steel

Aluminum

50−700 IPM

H: 34 in (864 mm)

181 lb

(1.3−17.8 m/min)

W: 19 in (483 mm)

(82 kg)

.023 − .045 in

.030 − .045 in

.035 − .047 in

D: 41 in (1041 mm)

(0.8 − 1.1 mm)

(0.8 − 1.1 mm)

(0.9 − 1.2 mm)

Operating Temperature Range: −20C to +40C

Storage Temperature Range: -30C to + 50C

3-2. Duty Cycle And Overheating

500

AMPERES	400
	300
	250
WELDING	225
	200
	150
	100
	10	15	20	25	30	40	50	60	70 80 90 100

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.

% DUTY CYCLE

60% Duty Cycle At 300 Amperes

40% Duty Cycle At 350 Amperes

6 Minutes Welding 4 Minutes Resting

4 Minutes Welding 6 Minutes Resting

Overheating

0

A or V

15

OR

Reduce Duty Cycle

Minutes

sduty1 5/95 / 217 442-A

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