Product manual
Installation instructions, Modular cabinet power cabling
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
103
Chapter 20 Modular cabinet power cabling
20.1 Introduction
This chapter describes the installation of the power cables of the modular cabinet. The installation
depends on whether the modular cabinet is powered by an AC source or a DC source and on how
the base station are powered.
Figure 64 gives the power distribution in the modular cabinet for the three basic powering methods:
the transformer, the Battery Power Unit (BPU) or an external 48 Vdc supply.
Fig. 64 Power distribution
WARNING
Disconnect or switch off all power supply sources before servicing any
power supply circuit.
Mains
filter
+
5 V
+ 12 V
− 12 V
To
System
Boards
BACKPLANE
To
CLUs,
CLU-Ss
or SLUs
PW1
PW2
PW3
PW4
PW5
PW6
PW3
MCCB
MODULAR
CABINET
TSRNB
101 33
X1
12, X1
13
PW-EXT
TRENB
101 03
PW-BP
TRENB
101 03
TRENB
101 05
or
X102
Piggy-back
FASTON
Piggy-back
FASTON
15 A
15 A
15 A
48 Vdc
PW1
PW2
PW7
F1
F2
BPU
TRENB
101 01
TRENB
101 01
TRE 990 1
13/850
36 V
ac
48 Vdc
External 48 Vdc
T
ransformer
Battery Power Unit
External 48 Vdc
Powered by:
(BPU)
1
1
1
1
3
3
3
3
2
2
2
2
049