Alcatel-Lucent 7450 ESS-7 - Installing an AC PSM

Installing Power Modules
7450 ESS-7 Page 73
Installing an AC PSM
The combination of one AC PSM (AC-to-DC power converter) and one AC PEM can support the
full system current requirements if you are operating the ESS-7 without power redundancy. For
AC power redundancy, two AC PSMs and two AC PEMs must be installed and powered on at all
times.
There are two front and two rear power bays in the ESS-7 chassis. The AC PSMs are installed in
the front power slots 1 and 2 (Figure 21). They correspond to the AC PEMs installed in the
respective rear power slots 1 and 2, directly behind the PSM. For example, the AC PSM installed
in the front power slot 1 corresponds to the AC PSM installed in the rear power slot 1 and the AC
PSM installed in the front power slot 2 corresponds to the AC PEM installed in the rear power slot
2.
Table 24 describes the chassis and power module features depicted in Figure 21 and Figure 22.
Figure 21: AC PEM and AC PSM Installation
1
2
4
2
2
1
2
3
1
1
5
5
6
6
SR70038A
Chassis Top View