APC 990-1031 Power Supply User Manual


 
10
System Block Diagram
Figure 4: System Block Diagram
MIM RIM
COM Card
Accessor
y
Cards
PowerView Display
DB9
COM
Port
Battery
Monitor
Bus
External Battery
Power
Input Circuit
Breaker
ACCESSORY PASS THROUGH BUS
Backfeed Relay
Automatic
Bypass
Manual Bypass
External
Battery
Frame
COM
Power or
Battery
Module
Power or
Battery
Module
Power or
Battery
Module
Battery
Module
120 VDC
Power
Module
AC in
155 to 276 VAC
Battery
Module
120 VDC
Battery
Module
120 VDC