Mitel 470 - Uninterruptible Power Supply (UPS)

Installation
105
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016
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 maxi-
mum power requirements of the communication server in its maximum configuration
and maximum traffic volume for different types of power supply.
Tab. 41 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 approx. 60% of the
maximum power requirements is needed.
Note
The uninterrupted operation of the communication server is ensured if the UPS takes over the
power supply within 20ms of the mains outage.
See also
For more technical details see "Technical data", page 256.
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