7-2. Connecting To Optional Auxiliary Power Plant (CC/CV Models Only)

. Place Process/Contactor switch in Electrode Hot - Stick position when using auxiliary power plant (see Section 6-3).

Single-Phase Power Connection

1

2

Single-Phase Auxiliary Power

1 120/240 V 50 A Receptacle RC5

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

2 Circuit Breaker CB7

Circuit breaker CB7 protects single- phase receptacle RC5 and the load wires from overload. If CB7 opens, all auxiliary power plant output stops and the receptacle does not work.

Three-Phase Power Connection

Y 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

Three-Phase Auxiliary Power

YStop engine.

YPower and weld outputs are live at the same time. Discon- nect or insulate unused cables.

.Have qualified person install ac- cording to circuit diagram and Auxiliary Power Guidelines (see Section 10).

Remove auxiliary power panel mounting screws. Tilt panel forward.

3 Lead 93

Remove plug before inserting leads. Reinstall bushing.

Rear Of Panel

914 Lead 92

5 Lead 91

906 Lead 42 (Circuit Grounding Lead)

4

92

7 Lead 90 (Neutral)

 

 

 

5

6

7

9

8

91

92

93

240V

120V

1-Phase

120V

 

 

240V

240V

3-Phase

3

2

12

10

11

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

Tools Needed:

8Isolated Neutral Terminal

9Jumper Lead 42

10Grounding Terminal

Jumper 42 is connected to lead 90 at factory. Jumper 42 may be discon- nected from neutral to meet applica- ble electrical codes.

Lead 42 connects to front panel Ground stud.

11User-Supplied Leads

12Circuit Breaker CB7 User Terminals

Connect user-supplied leads to ter- minals on CB7 and to the isolated neutral terminal and grounding termi- nal as necessary.

.Circuit breaker CB7 protects single-phase receptacle RC5 and the load wires from overload. If CB7 opens, all auxiliary power plant output stops and the recep- tacle does not work.

Reinstall auxiliary power panel.

240V

Ref. 197 399 / 802 332-E

OM-4405 Page 31

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Miller Electric Big 40 WG manual Single-Phase Power Connection Single-Phase Auxiliary Power, Three-Phase Power Connection

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.

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