Miller Electric Big 40 WG Owner's Manual download pdf (Page 35)

OM-4405 Page 31

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

Ref. 197 399 / 802 332-E

 Place Process/Contactor switch

in Electrode Hot - Stick position

when using auxiliary power plant

(see Section 6-3).

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 Auxiliary Power

 Stop engine.

 Power 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

4 Lead 92

5 Lead 91

6 Lead 42 (Circuit Grounding

Lead)

7 Lead 90 (Neutral)

8 Isolated Neutral Terminal

9 Jumper Lead 42

10 Grounding 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.

11 User-Supplied Leads

12 Circuit 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.

Tools Needed:

Volts

Amps

KVA/KW

Single

120/240

50

12

Three

240

48

20

60 HzFrequency

Engine Speed 1850 RPM

AC

Phase

1

Phase

3

Output

Lead 42 connects to GROUND stud on

front of unit.

Jumper 42 is connected to 90 at factory.

12

91 92 93

240V

120V

120V

240V

240V

1-Phase

3-Phase

3

4

5

6

7

8

9

10

11

12

Rear Of Panel

Three-Phase Power Connection

2

Single-Phase Power Connection

92

90

91

93

 Close panel opening

if no connections are

made to power plant.

 Close panel

opening if no

connections

are made to

power plant.

240V

Remove plug

before inserting

leads. Reinstall

bushing.

1 ... 34 35 36 ... 80

Comments to this Manuals

No comments