User's Manual

Table Of Contents

AXELL BSF-4004 BSF0038 SERIES REPEATER

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 Green 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