Power System; Fan Assembly (3C16856); Switch Specifications - 3Com Switch 7700 Installation Manual

Table 18 Description of the 24FX (3C16861) port cable
Card type
24FX

3.1.7. Power System

Two power modules are sufficient to power a fully loaded Switch 7700 system. However, the switch provides 3 slots
of power modules to implement N+1 redundancy backup.
The power distribution box of Switch 7700 is installed on the chassis floor close to the back of the chassis. It controls
current connection, disconnection and distribution.
AC Power Module (3C16854)
The AC power source requires an AC power module and an AC distribution box.
The AC power module is connected to the external power source through an AC socket and is connected to the
backplane. Specifications for the AC power module are listed in Table 19.
Table 19 AC power module specifications
AC input
Maximum output power

3.1.8. Fan Assembly (3C16856)

The fan assembly, shown in Figure 12, is installed on the right side of the Switch 7700. There are 4 120mm fans to
cool the system. The fans are directly connected to the backplane through connectors. Operation fault signals are
collected and transmitted to the system alarm board through the backplane.
Figure 12 Fan Assembly (3C16856)

3.1.9. Switch Specifications

This section provides detailed information about features of the Switch 7700. Table 20 below describes system
specifications for the Switch 7700.
Central
Connector type
wavelength
850nm MT-RJ
Item
100V to 240V, 47 to 63Hz
460W
S W I T C H 7 7 0 0
Interface cable
62.5/125µm multi-mode optical fiber
AC power module
C O M P O N E N T S
Transmission
distance
2km
19