7-2. Connecting To Optional AC Power Plant

Single-Phase Power Connection

1

2

.Do not weld while using optional ac power plant.

.Place Process/Contactor switch in

Weld Terminals Always On - Stick position when using optional ac power plant (see Section 6-3).

Single-Phase Generator Power

1 120/240 V 50 A Receptacle RC5

RC5 is connected to the optional ac power plant and supplies 60 Hz single- phase power at weld/power speed. Maximum output from RC5 is 12 kVA/ kW. Power available at RC5 is reduced when welding.

2 Supplementary Protector CB7

Three-Phase Power Connection

! Close panel opening if no connections are made to power plant.

AC

Single

Three

Phase

Phase

Output

 

1

3

Volts

120/240

240

 

 

 

Amps

50

48

KVA/KW

12

20

Frequency

60 Hz

Engine Speed

1850 RPM

 

 

 

Lead 42 connects to GROUND stud on front of unit.

Jumper 42 is connected to 90 at factory.

93

Supplementary protector CB7 protects single-phase receptacle RC5 and the load wires from overload. If CB7 opens, all generator ac output stops and the receptacle does not work.

Three-Phase Generator Power ! Stop engine.

! Power and weld outputs are live at the same time. Disconnect or insulate unused cables.

.Have qualified person install ac- cording to circuit diagram and Generator Power Guidelines (see Section 16).

Remove power panel mounting screws. Tilt panel forward.

Remove plug before inserting leads. Reinstall bushing.

5

6

7

9

8

Rear Of Panel

91

92

93

240V

120V

1-Phase

120V

 

 

240V

240V

3-Phase

 

240V

 

 

91

3

Lead 93

 

 

 

4

Lead 92

 

 

90

5

Lead 91

4

 

92

6

Lead 42 (Circuit Grounding Lead)

 

 

7

Lead 90 (Neutral)

 

 

 

8

Isolated Neutral Terminal

3

 

 

9

Jumper Lead 42

2

 

 

10

Grounding Terminal

 

 

Jumper 42 is connected to lead 90 at

12

 

 

 

 

factory. Jumper 42 may be discon-

 

 

 

nected from neutral to meet applicable

 

 

 

electrical codes.

10

 

 

Lead 42 connects to front panel

 

 

Ground stud.

 

 

 

 

 

 

11

User-Supplied Leads

11

 

 

12

Supplementary Protector CB7

 

 

 

User Terminals

 

 

 

 

! Close

panel

Connect user-supplied leads to termi-

nals on CB7 and to the isolated neutral

opening

if

no

terminal and grounding terminal as

connections

necessary.

are made

to

 

 

power plant.

 

. Supplementary protector CB7 pro-

tects single-phase receptacle RC5 and the load wires from overload. If CB7 opens, all ac power plant

Tools Needed: output stops and the receptacle does not work.

Reinstall power panel.

Ref. 197 399 / 802 332-B

OM-4409 Page 37

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Image 41
Miller Electric OM-4409 manual Connecting To Optional AC Power Plant

OM-4409 specifications

The Miller Electric OM-4409 is a remarkable welding machine designed for both professional welders and enthusiastic hobbyists. Known for its reliability and efficiency, the OM-4409 stands out in the industrial landscape due to its advanced features and innovative technologies.

One of the main features of the OM-4409 is its impressive power output. With a rated output of 400 amps, it is capable of tackling a variety of welding applications, including MIG, TIG, and stick welding. This versatility allows users to switch between welding processes depending on the project requirements while ensuring consistent quality and performance.

The machine incorporates advanced inverter technology, which enhances its overall efficiency. Inverter technology allows for a compact design without sacrificing performance. The OM-4409 weighs significantly less than traditional transformer-based machines, making it more portable and easier to transport. Additionally, the inverter technology ensures that energy consumption is kept to a minimum, reducing operational costs.

Another notable characteristic of the Miller Electric OM-4409 is its user-friendly interface. The intuitive control panel provides easy access to settings and adjustments, allowing welders to fine-tune the machine to their specific needs. The digital display shows crucial parameters such as voltage, amperage, and wire feed speed, enabling welders to monitor their progress in real-time effectively.

Safety is paramount in industrial applications, and the OM-4409 does not disappoint. It is equipped with advanced safety features, including thermal overload protection and fault indication systems. These features ensure that the machine operates within safe limits, protecting both the user and the equipment.

The OM-4409 also boasts a robust build quality, designed to withstand the rigors of daily use in demanding environments. Its durable construction ensures longevity, minimizing maintenance and downtime.

In summary, the Miller Electric OM-4409 welding machine is a powerhouse that combines power, efficiency, and user-friendliness. With its inverter technology, versatility across various welding processes, advanced safety features, and robust design, it represents an excellent investment for any welding professional looking to enhance their capabilities. Whether for heavy-duty industrial applications or intricate metalwork, the OM-4409 delivers unmatched performance and reliability.