5(10)
Datum/Date
Rev
Dokumentnr/Documentnr
Uppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved
Kontr/Checked
Tillhör/Referens-File/Reference
1998-05-29
A
1531-BML 351 048 Uen
INSTALLATION INSTRUCTION
Faktaansvarig - Subject responsible
Make the connections in the battery cabinet according
to the wiring diagram below, using the supplied cables.
WARNING: TAKE CARE WHEN USING
METAL NON-INSULATED TOOLS AS THE
BATTERIES DELIVER HIGH CURRENTS IN
CASE OF SHORT CIRCUIT.
This unit is equipped with a circuit breaker
disconnecting the batteries from the power supply unit.
to the BML unit
to the BML unit
-
-
-
+
-
+
+
+
5
INSTALLATION
1
If the system is already installed and
operating, inform the customer that your
work is going to shut down his exchange.
2
Unscrew and remove the front cover from
the exchange cabinet and note the
position and connections of all boards.
3
Lower the bottom plate and switch OFF
the power switch. Then remove the 36
VAC power cable, entering the bottom of
the cabinet (E), coming from the trans-
former or similar equipment.
4
Note the position of the boards and re-
move them all. Position the BML unit so
that the connectors are facing the bottom
of the cabinet and the four mounting holes
facing the back of the cabinet.
5
Slide the BML unit in at the back of the
cabinet and secure it with the supplied
four screws. For safety reasons on class I
units verify that the screws are tightened
to the cabinet as they ensure the
connection to protective earth.
6
Connect the power cord to the BML unit
and plug into mains. Connect cable
TRE 990 113/0850 to one of the two four-
pin outlets (D1 and D2) on the BML unit. It
is good practice to measure the -48 volt (-
54 volt) before installing the rest of the
equipment.
7
Connect the other end with the flat-pin
connectors (E) on the bottom of the
cabinet. This is polarity independent.
8
Re-install all boards according to your
notes of the initial configuration.
9
If you just had to install the BML 351 048
with no backup battery take the 6-pin plug
delivered with the BML unit. Plug it into
position (A) to prevent ESD discharges
directly to the connector. Then switch the
cabinet ON and start up the exchange
(see under 5.4). Otherwise continue with
the installation of the appropriate battery
backup.