7(48)
Date
Rev
Documentnumber
Prepared
Doc respons/Approved
Checked
Reference
1999-07-15
A
1531-BDV BS 101 05 Uen
INSTALLATION INSTRUCTION
Subject responsible
4.2
Safety and EMC
To fulfil electrical safety requirements IEC 950 and
EN 60950, the exchange must be connected to
protective earth via a flexible wire with a cross
sectional area of at least 6 mm
2
.
Local requirements shall be adhered to.
The electrical connection must be carried out by
authorised personnel.
Before operating, make sure that the chassis is
connected to a hard-wired protective earth.
Note: The wrist strap must have a 1MOhm series
protection resistor to comply to the safety
standards. If this resistor is missing, then
accidentally touching live wires can be leathal.
All line interfaces in the PBX are protected in
accordance with K.21 (voltage transients up to 1.5 kV).
BTU-A, BTU-A2, BTU-B, BTU-C, BTU-D, BTU-E and
MFU are working with interface TNV.
All other boards and the V.24 port work with interface
SELV.
4.2.1
EMC
The ferrites, with the ERICSSON ordering number
STF 82 601, should be situated close to the slot where
the cables are led out of the cabinet. Two turns through
the ferrite core are sufficient to comply with EN 55022
Class B and to avoid disturbances in non-industrial,
residential (home) usage.
4.3
Access to the boards
Turn out the transport screws (A) about 1 cm at the top
and bottom of the swivel shelf. See figure in
. Hold the bottom of the shelf, lift the shelf slightly
and turn the swivel shelf counter clockwise (ccw). Turn
the screw (B) two turns at the top of the shelf cover
and remove the cover.
PSU
to protective earth
Connection
for protective
earth
A
A
cross sectional area greater than 6 mm
2
B
Shelf
cover
Turn
out
SWIVEL-
SHELF
NOTE:If the earth is not connected,
a possible strike of lightning
might cause a fire!
wrist strap
connector
snap-on
C
C
Remove this screw located behind the swivel shelf
to access the wall mounting plate
Attach label delivered with the PSU!
Latch to release cover
Bottom view of cabinet BDV BS 101 05
Note: The mains current rating stated on the label is the
maximum current of the charger version.
168
Label: LZFBS 083 013/3L03
NOTE:
Make sure that a sound ground connection to
the exchange has been established. Other-
wise this can be hazardous in case of light-
ning. Use a grounding wrist strap when
handling PBAs sensitive to electrostatic dis-
charges.