Miller Electric 1250, 1000 Connecting Input Power, Welding Power Source Input Power Connections

Models: 1250 1000

1 40
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4-13. Connecting Input Power

 

 

= GND/PE Earth Ground

9

 

 

 

 

 

8

 

 

 

11

 

 

 

10

 

 

 

 

2

4

 

 

 

 

7

 

 

 

 

1

 

 

 

IMPORTANT

 

 

6

Input Terminal Board

 

 

 

 

 

L1 (U)

 

 

7

L2 (V)

 

4

 

L3 (W)

 

 

 

 

5

4

 

 

 

3

 

 

 

 

 

 

GND/ PE Earth Ground

Tools Needed: 3/8 in

3/8 in

YInstallation must meet all National and Local Codes − have only quali- fied persons make this installation.

YDisconnect and lockout/tagout in- put power before connecting input conductors from unit.

YMake input power connections to the welding power source first.

YAlways connect green or green/ yellow conductor to supply grounding terminal first, and never to a line terminal.

See rating label on unit and check input voltage available at site.

1Input Power Conductors (Customer Supplied Cord)

Select size and length of conductors using Section 4-11.Conductors must comply with national, state, and local electrical codes. If applicable, use lugs of proper amperage capacity and correct hole size.

Welding Power Source Input Power Connections

2 Strain Relief

Route conductors (cord) through strain re- lief and tighten screws.

3Machine Grounding Terminal

4Green Or Green/Yellow Grounding Conductor

5Reed Switch (Ground Current Sensor) (Optional)

Connect green or green/yellow grounding conductor to welding power source grounding terminal first. If unit is equipped with optional ground current sensor, route grounding conductor through reed switch two times and connect to grounding termi- nal.

6Welding Power Source Line Terminals

7Input Conductors L1 (U), L2 (V) And L3 (W)

Connect input conductors L1 (U), L2 (V) and L3 (W) to welding power source line terminals.

Close and secure access door on welding power source.

Disconnect Device Input Power Con- nections

8Disconnect Device (switch shown in OFF position)

9Disconnect Device (Supply) Grounding Terminal

Connect green or green/yellow grounding conductor to disconnect device grounding terminal first.

10 Disconnect Device Line Terminals

Connect input conductors L1 (U), L2 (V) And L3 (W) to disconnect device line terminals.

11 Overcurrent Protection

Select type and size of overcurrent protec- tion using Section 4-11(fused disconnect switch shown).

Close and secure door on line disconnect device. Remove lockout/tagout device, and place switch in the On position.

Ref. 800 103-C / Ref. 802 295

OM-2223 Page 20

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Miller Electric 1250, 1000 manual Connecting Input Power, Welding Power Source Input Power Connections

1250, 1000 specifications

Miller Electric is a renowned name in the welding and fabrication industry, providing high-quality machines and equipment that cater to a range of applications. Among its impressive line of products are the Miller Electric 1000 and 1250 arc welding machines, designed to offer exceptional performance in both industrial and commercial environments.

One of the main features of the Miller Electric 1000 model is its robust construction, making it ideal for heavy-duty welding tasks. It boasts a powerful output that provides a significant range of welding power, accommodating various electrode sizes and types. This flexibility allows for effective use in a variety of welding processes, including Stick, TIG, and MIG, ensuring that users can tackle a wide array of jobs without needing multiple machines.

The Miller Electric 1250 takes things a step further, delivering even more power and efficiency. With advanced inverter technology, the 1250 offers increased duty cycles and improved energy efficiency, which can lead to cost savings over time. The inverter design also allows for a lighter weight compared to traditional transformer-based machines, enhancing portability and ease of use on job sites.

Both models are equipped with intuitive digital controls and advanced monitoring systems, allowing users to make precise adjustments easily. Features like the Auto-Set functionality simplify the setup process, enabling welders to select materials and thicknesses, and the machine automatically adjusts parameters for optimal results. This is especially beneficial for those who may not have extensive experience, providing a level of confidence in achieving high-quality welds.

Another important characteristic of both the 1000 and 1250 is their adaptability to different environments. They are designed to withstand challenging conditions, including extreme temperatures and dust, making them suitable for outdoor applications and remote job sites. Additionally, Miller Electric prioritizes user safety and comfort, incorporating features like integrated thermal overload protection and ergonomic designs that reduce operator fatigue during prolonged use.

In summary, the Miller Electric 1000 and 1250 arc welding machines represent the pinnacle of modern welding technology. With their powerful output, advanced features, and durable construction, they are well-suited for a range of industrial applications. Whether for routine maintenance or heavy fabrication tasks, these machines deliver reliability and precision, essential for any professional welder.