363-206-305
Power
4-14  
Issue 3 June 2000
Power Distribution 
4
See "Power Requirements" in Chapter 10, "Technical Specifications," for power 
dissipation values. 
Figure 4-10 shows a typical battery feeder interface for a single shelf. 
!
CAUTION:
This information is for a typical application only. Consult 801-525-168, DDM-
2000 Floor Plan Data Sheets, and T-82046-30, Power Systems DC 
Distribution Circuit for Digital Transmission System, for proper engineering 
of battery plant and feeders. 
Figure 4-10. Typical 
−
48 Volt Power Supply for DDM-2000 FiberReach Multiplexer 
Single Shelf 
Protection
Distribution
Fuse Board
RTN (A)
RTN (B)
At -48 V Battery
-48 V (A)
-48 V (B)
-48 V (A)RTN (A)RTN (B) -48 V (B)
12 GA
To DDM-2000 FiberReach Shelf
To Fuse
NOTE
NOTE: Feeder size is selected per T82046-30 and EIM 90MV001, Issue 5.