Manual Part 5

BFU-22
3.3 Shunt
The shu nt is used to sense the input current. The SM senses the value, w hich
is used for control of the BFU-22.
3.4 TM Supply
There is one high-power TM output f or supply of transmission equipment.
4 Interf aces
The BFU-22 has the following interfaces:
• Battery
• RBS DC distribu tion
• TM su pply 50 A
• EPC bus
4.1 Signal and Power Interfaces
Input Data
The input data is shown in the table below.
Table 2 Input Data
Nominal Input Voltage +24 V DC negative ground
Permi tted Variation Input Volt age +18.0 to +29.0 V DC
Non-destruction Input Voltage 0.0 to +32.0 V DC
Power 4800 W
Nominal Input Current
200 A
Maximum Input Current
220 A
Maximum C urrent Ripple
(20 Hz – 20 kHz)
24 A
rms
5 (6)
EN/LZT 720 0276 Uen R2A