8(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
POWER SUPPLY UNIT
The SMPS for the cabinet are AC/DC switch mode
power supplies complying to ETS 61 000-3-2 (power
factor correction but only for the 230V version) for two
mains voltages. Please check whether the label states
the proper mains voltage as required. For mains with
230V to 250V AC, two versions are available:
•
BML BS 101 02/1 (PSU 230V standard)
•
BML BS 101 02/3 (PSU 230V std. w. PFC)
•
BML BS 101 01/1 (PSU 230V equipped with
battery charger).
•
BML BS 101 01/3 (PSU 230V equipped with
battery charger and PFC).
For mains with 115V to 127V AC two versions are
available:
•
BML BS 101 02/2 (PSU 115V standard)
•
BML BS 101 01/2 (PSU 115V equipped with
battery charger).
The PSUs deliver 30 W on the PBA supply voltages
and 101 W on the 48 V supply voltage.
Warning: The power switch does not disconnect
from mains. The mains cord must be unplugged to
disconnect the mains.
The PSU is equipped with a mains fuse rated
250VAC 6,3 A T.
NOTE: This fuse NGH 258 03/630 can be ordered
from Ericsson but is a non-accessible and non-user
serviceable part. Only authorised personnel is
allowed to change the fuse. Contact the local
supplier in this matter.
Battery backup time
The power consumption of the telephones and base
stations on the 48 V should be less than 2.1 A for all
PSU types. The batteries in the integrated battery case
have a capacity of 2Ah. Using fresh batteries, a
backup time of 20 minutes is guaranteed and
depending on the system configuration even longer
backup times might be achieved.
5.1
Replacement of the power
supply unit
On delivery the PSU is already installed in the cabinet.
The procedure of how to dismount the unit is
described below.
a
Switch off the PSU (A) and unplug the mains
from the wall outlet. If the unit is a PSU with
battery charger, disconnect the DC supply line to
the batteries and unplug the alarm connector on
the unit.
b
Disconnect the DC supply cord (D) from the
swivel shelf.
c
Unscrew the transport screw (B).
d
Push the PSU from the bottom and turn out the
PSU clockwise, unhinge and take it out. Then
pull off the mains plug at the bottom of the PSU
and disconnect the ground wire.
e
Install the PSU in the reverse manner.
When installing a power supply unit with battery charg-
er and the backup battery, please refer to the
LATION INSTRUCTION (1531-BML BS 101 01)
Power switch
does not
disconnect
unit from
mains.
Mains power cord plug
IEC 320 C17
Standby only
(B)
(D)
Ground
Label
(A)