Alpha Technologies CXPS-HD 48-1.2-225 - Manual (Page 26)

0530082-J0 Rev B Page 18 of 31
5.6.1 DC input to panel
The distribution panel contains input bus bars for both -48V hot and common connections. The power system is
configured with adapter bus bars for rectifier shelf integration purposes. The bus bar inputs are fixed for system
-48V hot and common connectivity.
Figure 5–Rear view of distribution panel terminations
5.6.2 Distribution cabling
Refer to the guidelines supplied with the load equipment. Distribution cables are typically sized to provide a 0.5V
loop drop at full load as well as meeting ampacity requirements of the protection fuse or circuit breaker. Terminate
the distribution cables to the distribution panel with two-hole
¼" on ƙ" centers lugs. Refer to the customer
connection drawing at the rear of the manual for more details.
5.6.3 Load breaker -48V output (hot) connections
Connect the load breaker -48V output (hot) cables to their respective breaker outputs on the distribution panel
before connecting the load breaker common (ground) cables. Secure the two hole lugs to the
¼" studs (on ƙ"
centers) using the hardware supplied with the distribution panel. Run the cables directly out of the rear of the
distribution panel. Refer to Figure 5.
5.6.4 Load breaker common (ground) connections
Connect the load breaker common (ground) cables to their respective breaker outputs on the distribution panel.
Secure the two hole lugs to the
¼" studs (on ƙ" centers) using the hardware supplied with the distribution panel.
Run the cables directly out of the rear of the distribution panel below the load -48V breaker output (hot) cables.
Refer to Figure 5.
5.6.5 Battery breaker connections
Connect the battery breaker -48V (hot) connections first using the same guidelines as for the load breaker output
cable installation. Connect the battery common (ground) cables using the same guidelines as the load breaker
common cables. The cables should run directly out of the rear of the distribution panel below the load breaker
-48V output (hot) cables. Refer to Figure 5.
-48V hot system
bus bar Common system bus
bar and system ground
reference
Battery breaker
(-) outputs
Battery breaker
(+) outputs
Load breaker
(+) outputs
Load breaker
(-) outputs
Alarm system and
I/O connectors