Nokia of America Corporation BBTRX-22 Benutzerhandbuch
DC input voltage range
The normal DC input voltage range (measured at Alcatel-Lucent B25 RRH4x30 input
location), the set point of float voltage for the battery and the maximum float voltage set
points for the B25 RRH4x30 are provided in the following table.
location), the set point of float voltage for the battery and the maximum float voltage set
points for the B25 RRH4x30 are provided in the following table.
B25 RRH4x30
Normal input
voltage range
(volts DC)
Set point of float
voltage
(volts DC)
Maximum float
voltage
(volts DC)
–48‑V DC
–40.5 to –57
–54.48
–57
Notes:
1.
Operating range with all performance met, including startup voltage conditions. The
B25 RRH4x30 has an extended input voltage range of –38 to –57 volts DC at full
performance except for power consumption relaxation. Startup is not guaranteed when the
input voltage is above –40.5 volts DC.
B25 RRH4x30 has an extended input voltage range of –38 to –57 volts DC at full
performance except for power consumption relaxation. Startup is not guaranteed when the
input voltage is above –40.5 volts DC.
Default voltage
If a failure occurs with the DC power system controller, the DC power system output
voltage shall remain within the range specified in the table above.
voltage shall remain within the range specified in the table above.
DC voltage regulation
The DC voltage shall be regulated to within ±0.5% of the voltage set in the table above
under all conditions of line, load and temperature.
under all conditions of line, load and temperature.
DC soft start
The DC voltage at input of the Alcatel-Lucent B25 RRH4x30s shall not overshoot more
than 3.5% of the set voltage in the table above for a period of more than 100 milliseconds,
under any conditions.
than 3.5% of the set voltage in the table above for a period of more than 100 milliseconds,
under any conditions.
Ripple and noise
The following table provides ripple and noise requirements. This requirement applies,
with or without batteries connected to the system, however the system is not intended to
operate without batteries.
with or without batteries connected to the system, however the system is not intended to
operate without batteries.
B25 RRH4x30
Ripple voltage
mV pp
(0 to 100 MHz)
Ripple voltage
mV pp
(mV rms)
DC system
noise
mV
(psophometric)
–48‑V DC
Not to exceed 250
100
Less than 2
Electrical power requirements for –48‑V DC power systems
DC Power requirements
....................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................
C-8
Alcatel-Lucent – Proprietary
Use pursuant to applicable agreements
B25 RRH4x30
3MN-02023-0001-RJZZA
Issue 0.02
January 2015
D
R
AFT
D
R
AFT