TSBC Series System Installation Guide
30
4.4.2
Connecting to DC Power
The TSBC-HW-TRANS DC model is furnished with two DC power connection ports. In addition, each
DC powered unit is supplied with two DC power cables.
Fuse and Cabling Requirements
16 AWG wiring must be used and the 48V supply must be protected with a customer provided 5A 48V
fuse.
To connect to DC power:
1.
Connect one wire from the positive terminal of the TSBC-HW-TRANS to the return side of DC
power source one, as shown in
Figure
4.5 on page
30.
2.
Connect another wire from the negative terminal of the TSBC-HW-TRANS to the -48V side of DC
power source one.
3.
Connect a ground wire from the ground terminal of the TSBC-HW-TRANS to earth ground.
4.
Repeat steps 1-3 for the second power DC power source.
Figure
4.5
DC Power Connection
MGMT0
ETH
VOIP
0
1
0
1
TMS
0
1
DC
Power
Source 1
Return
-48V
Earth
Ground
Power Supply
Mounting Screws
Do not unscrew
Earth
Ground
5A fuse
Return
-48V
5A fuse
DC
Power
Source 2
