3 - 4

B e n c h S e t u p

Table 3-1 identifies and describes the ac fuse options:

T a b l e 3 - 1

AC f u s e s

Fuse Functi o n

Rati ng

T ype

F1

This fuse delivers ac power to all ports. It is always required

20

A,

Auto,

 

except when power from the ac input (port 2) must be

32

Vdc

plug-in, fast

 

blocked at this location.

 

 

blow

F2

This fuse passes ac power to/from port 1.

20

A,

Auto,

 

 

32

Vdc

plug-in, fast

 

 

 

 

blow

F3

This fuse passes ac to/from port IN.

20

A,

Auto,

 

 

32

Vdc

plug-in, fast

 

 

 

 

blow

F4

This fuse is always required for the dc power supply.

10

A,

Auto,

 

 

32

Vdc

plug-in, fast

 

 

 

 

blow

F5

This fuse passes ac to/from port OUT.

20

A,

Auto,

 

 

32

Vdc

plug-in, fast

 

 

 

 

blow

F6

This fuse passes ac to/from port 3.

20

A,

Auto,

 

 

32

Vdc

plug-in, fast

 

 

 

 

blow

F7

This jumper ties two sections of the ac power bus together

Jumper

Auto,

 

thus delivering ac power to both sides of the node. It should

 

 

plug-in,

 

be removed only when dual power supplies are fed from

 

 

shunt

 

separate ac sources.

 

 

 

F8

The 5V circuit includes Fuse F8 which protects the lid and

5 A, 32 Vdc

Auto,

 

RF board under short-circuit conditions in conjunction with

 

 

plug-in, fast

 

redundant power supplies.

 

 

blow

F9

The 24V circuit includes Fuse F9 that protects the lid and

10

A,

Auto,

 

RF board under short-circuit conditions in conjunction with

32

Vdc

plug-in, fast

 

redundant power supplies.

 

 

blow

 

 

 

 

 

CA U T ION!

Voltages up to 90 Vac are accessible. To avoid shock hazard, confirm that no power is applied to the node before removing cover or replacing fuses.

S G 2 0 0 0 I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l

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Image 37
Motorola SG 2000 operation manual Fuse Functi o n Rati ng Ype