Uninterruptible Power Supply (Ups) - Mitel 470 System Manual

Connection panel FOP
Fastening
board
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
Communication server
Internal power supply unit only
External auxiliary power supply unit only
Internal power supply unit + external auxiliary power supply
unit
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.
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016
Auxiliary power
suply unit (APS2)
Maximum power requirements
210 VA
400 VA
610 VA
Installation
Fastening
board
105