Miller Electric 852 manual Installation, Specifications, Duty Cycle And Overheating

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

SECTION 4 − INSTALLATION

4-1. Specifications

Rated

Amp

Maximum

IP

Amperes Input at Rated Load Output, 50 or 60 Hz,

Model

Open-

Three-Phase

Welding

Range DC

Circuit

Rating

Output

Voltage DC

200 V

230 V

380 V

400 V

440 V

460 V

575 V

KVA

KW

300

300 A @

68

70

61

35

33

31

31

25

24.5

13.8

32 Volts

15 − 395

21M

Amp

DC, 60%

(70)

4.0*

3.6*

1.1*

1.1*

1.0*

3.1*

1.5*

1.3*

0.67*

Duty Cycle

450

450 A @

71

102

89

54

51

47

45

36

35.5

23.3

38 Volts

20 − 590

21M

Amp

DC, 60%

(70)

3.5*

3.1*

1.5*

1.4*

1.2*

1.5*

1.2*

1.2*

0.51*

Duty Cycle

650

650 A @

71

124

75

71

65

62

50

49.4

36

44 Volts

50 − 850

21M

−−

Amp

DC, 60%

(70)

5.2*

1.7*

1.6*

1.5*

2.6*

2.1*

2.1*

0.58*

Duty Cycle

*While idling

( ) Indicates specification differences for CE models

4-2. Duty Cycle And Overheating

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 and void warranty.

Example: 60% Duty Cycle =

6 Minutes Welding	4 Minutes Resting
Overheating	A
0
	15
	OR
Minutes	Reduce Duty Cycle	duty1 4/95 / Ref. SA-168 919
		OM-222 Page 13