User's Manual

Installing the BSPS Hardware Installation Manual
7-4 Airspan Networks Ltd. 02030311-03
7.2. BSPS Components
The BSPS consists of the following basic components:
! DC Rectifier modules: The Rectifier converts the AC current to DC. The BSPS
can house up to four rectifiers. The rectifiers are “hot plugged” and operate in
parallel. This enables the user to define an “N+1”or “N+2”redundant system.
Each rectifier has its own current sharing system, satisfying a complete sharing
among rectifiers.
! System controller
! Electronic Low Voltage Detector (ELVD): The LVD disconnects the battery
from the load, avoiding damage to the battery when over-discharged.
! Battery
! Load and battery circuit breakers for DC protection and distribution
! DC Distribution unit: The DC Distribution unit provides circuit breakers for
distributing the output current to multiple BSDUs.
The unit also contains a bypass switch to bypass the LVD.
Note: For power redundancy, at least two rectifiers must be installed.
The main power rack is housed in a 19” (inches) front mountable chassis.
Figure 7-2 displays the BSPS main components.