2.2.6
Backup Batteries Connection
The backup batteries and Back-up Battery Cable (KX-A228 for PSU-S and PSU-M, or KX-
A229 for PSU-L) provide backup power supply to allow full use of the Hybrid IP-PBX in the
event of a power failure. In case of power failure, the backup batteries automatically maintain
the power for the Hybrid IP-PBX without interruption.
Be sure to comply with applicable local regulations (e.g., law, guidelines).
1.
Turn off the battery switch on the PSU.
2.
Connect the Back-up Battery Cable with 3 identical VRLA (Valve Regulated Lead Acid)
batteries (12 V DC × 3).
Fuse
Red
•
Turn on the battery switch on the PSU only after the installation of the Hybrid IP-PBX is
finished and AC power is turned on.
•
For 1 backup battery, battery capacity of 28 Ah or below is recommended (otherwise, the
backup battery may not be charged).
•
Make sure that the type and capacity of the 3 backup batteries are identical.
•
The Back-up Battery Cable should not be exposed to direct sunlight. Keep the Back-up
Battery Cable and the backup batteries away from heating appliances and fire. Place the
backup batteries in ventilated place.
•
For details about the backup batteries, refer to the manual intended for the batteries.
CAUTION
•
Make sure that the polarities of the backup batteries and wiring are correct.
•
Make sure that you do not short the backup batteries or cables.
•
There is a danger of explosion if backup batteries are incorrectly replaced. Replace
only with the same or equivalent type recommended by the manufacturer. Dispose of
used batteries according to the manufacturer's instructions.
•
Use the correct type of Back-up Battery Cable for the type of the PSU.
Back-up Battery Cable
Backup Batteries (12 V DC x 3)
Battery Connector
Black
2.2 Installation of the Hybrid IP-PBX
ON
Battery Switch
OFF
Installation Manual
43