8-9. Overload Protection

 

 

Y Stop engine.

 

 

. When a circuit breaker or fuse

 

 

 

opens, it usually indicates a

 

 

 

more serious problem exists.

 

 

 

Contact Factory Authorized

 

 

 

Service Agent.

 

 

1

Fuse F1

 

 

2

Fuse F2

 

 

F1 and F2 protect the stator exciter

 

 

winding from overload. If F1 opens,

 

 

weld and auxiliary power is low or

 

 

stops entirely. If F2 opens, weld out-

 

 

put is low or stops entirely. 4 kVA/

 

 

kW auxiliary power is still available.

2

1

3

Circuit Breaker CB4 (Not

 

 

 

Shown)

 

 

4

Circuit Breaker CB5

 

 

 

(CC/CV Models Only)

 

 

5

Circuit Breaker CB10 (Not

 

 

 

Shown)

8

 

6

Circuit Breaker CB11

 

7

Circuit Breaker CB12

7

 

 

 

 

6

 

8

Circuit Breaker CB13

CB4 protects the welding arc drive (dig) circuit. If CB4 opens, electro- de may stick to the workpiece more frequently during low voltage (short arc length) conditions. CB4 auto- matically resets when the fault is corrected.

CB5 protects the 24 volt ac output to remote receptacle RC14, and 24

4volt output to field current regulator board PC1 (CC/CV models only). If CB5 opens, weld output and 24 volt output to RC14 stops. On units with optional auxiliary power plant, aux- iliary power output at receptacle RC5 also stops if CB5 opens.

CB10 protects the engine battery circuit. If CB10 opens, the engine will not crank. CB10 automatically resets when the fault is corrected.

CB11 protects the engine wiring harness. On CC models, if CB11 opens the max OCV circuit does not work and open circuit voltage is variable at all times (see max OCV note under Weld Controls in Sec- tion 5-2). If CB11 opens on CV mod- els, weld output stops (auxiliary power is still available).

CB12 protects the field flashing cir- cuit. If CB12 opens, the generator may not excite at start-up and weld and auxiliary power output may not be available.

CB13 protects the engine shut- down circuit. If CB13 opens, the en- gine cranks but does not start.

Press button to reset breaker.

802 729 / Ref. 802 789

OM-4405 Page 41

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Image 45
Miller Electric Big 40 WG manual Overload Protection, Press button to reset breaker
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Big 40 WG specifications

The Miller Electric Big 40 WG is a versatile and powerful welding generator designed to meet the demands of professionals in the field. Known for its reliability and robust performance, the Big 40 WG is the ideal choice for those who require both welding capabilities and a portable power source.

One of the standout features of the Big 40 WG is its ability to produce a substantial output of up to 10,000 watts of continuous power. This ensures that users have enough capacity to run various tools and equipment, making it perfect for job sites where electricity may not readily be available. The generator is powered by a Kohler Command PRO engine, renowned for its durability and efficiency, ensuring that users can depend on its performance even in the toughest conditions.

The machine offers a dual capability for electric welding and stick welding, which enables users to tackle a variety of applications, from light maintenance tasks to heavy-duty industrial jobs. The Big 40 WG features an easy-to-use control panel, equipped with clear indicators and outputs that simplify operation. Whether you need to switch between welding modes or adjust settings, the intuitive design allows for quick responses and seamless operation.

In terms of technology and innovation, the Big 40 WG includes advanced features such as an automatic idle speed adjustment, which increases fuel efficiency and reduces wear on the engine. This technology not only helps save on fuel costs but also minimizes noise levels, providing a more pleasant working environment.

Another key characteristic of the Big 40 WG is its portability. Engineered with a lightweight frame and built-in lifting hooks, it is easy to transport and maneuver, making it an excellent choice for on-site work. The rugged construction ensures that the generator can withstand the rigors of outdoor use, enhancing its lifespan and reliability.

For those in search of a welding generator that delivers on performance, functionality, and portability, the Miller Electric Big 40 WG stands out as a preferred option. Its combination of powerful output, advanced technologies, and user-friendly features makes it a valuable tool for professionals across various industries, ensuring they can complete their jobs effectively and efficiently, no matter where they are.
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