9(48)
Date
Rev
Documentnumber
Prepared
Doc respons/Approved
Checked
Reference
1999-07-15
A
1531-BDV BS 101 05 Uen
INSTALLATION INSTRUCTION
Subject responsible
5.2
Power feeding with an external DC supply
When the PBX is supplied with power by an external battery with 48V nom. (44 - 56V), the installation of a power
supply equipped with a battery charger (BML BS 101 01/_) is required. The DC supply is connected directly to the
PSU.
An externally accessible fuse 250VAC 6,3 A T is provided on the PSU, but additionally a fuse must be installed in the
supply line with DC current switching capability greater than 160 A.
Note: To prevent arcing never connect the DC source when the PSU has not started-up.
Use the mains to power up or use an external switch to connect the DC source. This is a precaution to minimise the
contact loads on the plug. For further details see
INSTALLATION INSTRUCTION (1531-BML BS 101 01)
As battery operation often requires different preconditions, only an overview can be provided with regard to battery
capacity/charging capacity. The batteries should be supplied locally. The type is described in detail in
INSTRUCTION (1531-BML BS 101 01)
6
ALLOCATION
In principle, all board positions in cabinet BDV BS 101 05 can be used for arbitrary configurations with PBAs
belonging to PBX-system ASB 150 02.
The boards are equipped with ground brackets on the top and bottom. Make sure to fasten the boards with the
supplied screws during installation.
There are recommendations for configurations in order to simplify operation and maintenance. For further information
see document collection EN/LZB 103 1233.
Sub-equipped boards:
Install sub-equipped boards in the last position after the standard boards to enable easy upgrading without having to
re-number trunks and extensions.
6.1
Power supervision of ELU-A (ROF 157 5114/_)
The board is equipped with an automatic traffic limiter restricting the internal power dissipation on the board to a
maximum of 12W. This depends on both the line length and the number of lines busy.
If the power consumption exceeds the limit, no further lines can access service, and at least two lines have to go on
hook, for all lines to work normally again.
When connecting external voice systems a maximum of 8 lines are recommended on each board. The remaining
lines on the board are to be connected to low-traffic extensions.