User Manual

Chapter 2 - Installation Installing the Base Transceiver Station (BTS) Equipment
4Motion 79 System Manual
2.3.6 Power Supply Unit (PSU)
The single Euro PSU module is a 48 VDC power supply unit. Each BTS chassis
can contain up to four PSU modules providing N+1 redundancy configurations.
The following table displays the number of PSU modules (excluding redundant
units) required for various BTS configurations:
CAUTION
It is strongly recommended to always use the power cables available from Alvarion.
Due to the high current that should be supported by the cable, good workmanship is esstential in
preparing it.
Table 2-10: PSU Requirements, Configurations with one NPU (excluding PSU redundancy)
Number of AUs Minimum Required Number of PSUs
1 - 4 2
5 - 6 3
NOTE
The PSU(s) do not supply power to the ODUs. ODUsare powered directly from the power source
via the PIU and the back plane.