6(8)
Datum/Date
Rev
Dokumentnr/Documentnr
Uppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved
Kontr/Checked
Tillhör/Referens-File/Reference
1999-07-15
C
1531-BML BS 101 01 Uen
INSTALLATION INSTRUCTION
Faktaansvarig - Subject responsible
4.3
Installation of battery backup with greater capacity
Should a higher battery capacity be necessary, please contact the vendor for details. The battery must be capable of
handling a charging current of 3A. The battery must be of lead acid type.
The external batteries must be installed in a separate housing. As the gases are explosive take care of a good
ventilation to the outside to keep vapours from seeping into hazardous areas.
To protect against fire in case of short circuit, install an additional circuit breaker with switch. This is useful to prevent
arching on the DC connector (E) of the power supply when removing and inserting the plugs of the battery cable.
4.4
Installation with an external DC source
If there is no mains supply provided, the system can also be run on an external DC source e.g. large utilities. The in-
put voltage range is 44....54 V DC. The installation must provide a circuit breaker (CB) capable of switching currents
in excess of 150 A DC.
This is mandatory to prevent hazardous fires.
In this case a separate cable (TSR BS 101 10/2000) is required to connect the DC source. This cable inhibits the lock
on discharged batteries. This cable must not be used for larger battery backups.
4.5
Setting the charging voltage
The power supply unit is equipped with a potentiometer to
adjust the battery charging voltage.
This potentiometer is factory set
Any change in the setting may only be done by authorised
personnel as it might reduce battery life. The battery
(BKC BS 101 01/1) used has a trickle charging voltage of
54.5V DC, so this is the maximum output voltage delivered on
the (E) connector. If an external battery with greater capacity
should be connected instead, the charging voltage setting
must comply with the demands of the battery manufacturer.
4.6
Changing the battery fuse
The battery fuse is accessible from the front of the unit. Replace it only by a fuse with the ERICSSON ordering
number
NGH 258 03/630
Ask your local supplier for details.
This fuse meets the requirement of cutting off a DC current in excess of 150 A. This is a mandatory requirement to
prevent hazardous fires.
NOTE:
Always disconnect the battery supply cable before changing the fuse.
PSU
CB = circuit breaker 6,3 A T / >150 A cutoff
capability, should also function as a switch
DC connector
(E)
external battery
CB
BMLBS10101
or ext. DC source