Installation
87
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
Fig. 25
Fan-out-panel with auxiliary power supply fitted (viewed from below)
4. 4. 3
Uninterruptible power supply (UPS)
The use of an external uninterruptible power supply (UPS) guarantees operation
even in the event of a mains outage.
The UPS battery capacity is rated according to the communication server’s primary
power requirements and the required bridging time. The table below shows the
maximum power requirements of the communication server in its maximum con-
figuration and maximum traffic volume for different types of power supply.
Tab. 38
Maximum power requirements of the communication server
The battery capacity required [Ah] can be calculated using the battery voltage and
the maximum bridging time. It is important to note that the battery must never be
allowed to become completely discharged and that in typical conditions only ap-
prox. 60% of the maximum power requirements is needed.
Communication server
Maximum power requirements
Internal power supply unit only
210 VA
External auxiliary power supply unit only
400 VA
Internal power supply unit + external auxiliary power
supply unit
610 VA
Connection panel FOP
Auxiliary power
suply unit (APS2)
Fastening
board
Fastening
board