A
XELL
BSF-4004
BSF0038
S
ERIES
R
EPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
3.7.2.5 -48V Power Source Connection
Note: The -48VDC version of the power supply is designed to turn off if the supply voltage falls below
-36V (
±
1V), not to drain the feeding battery. It will turn on again as the supply voltage reaches -43V
(
±
1V).
-48V power supply requirements
The 48VDC power supply must comply with SELV requirements, as defined in EN60950, which
implies double isolation. The output power needs to be 48VDC +25%/-15%. The maximum input
current is 8A.
Connect the power cable to the plinth as show below:
•
Phase
linked to the
Brown
cable
•
Neutral
linked to the
Blue
•
Ground
to the G
reen and Yellow
. See illustration below.
Figure
3-19: -48VDC Power Connections
Recommended cable areas for 48VDC
Distance
Cable Area
0 - 10 meters between repeater and
power supply
2,5 mm²
10 – 50 meters between repeater and
power supply
4 mm²
Over 50 meters between repeater
and power supply
Recommendation is to reconfigure the
installation, or to make special
arrangements to increase cable area
© Axell Wireless Ltd
Doc. No. PN 4004 BSF0038 Series-UM Rev. 1.0
17
