Lucent Technologies 2VR250E, Руководство по эксплуатации продукта

Страница: 44 / 82

Lucent Technologies Enhanced VR Series Batteries
7 - 4 Operation Issue 5 December 1998
Charging
Voltage Ripple
The amount of ac voltage ripple present on the charging voltage
for the battery can seriously affect battery performance.
Excessive ripple could result in sharply reduced battery life and
increased gassing rates. Refer to “Lead-acid Battery Gassing
Rate.”
Both the amplitude and frequency of the ripple affect the degree
of battery degradation. As a guideline, the charging voltage
ripple for the Enhanced VR Series battery should not exceed
10mV peak to peak per cell or last longer in duration than
8mSec.
Battery and
Ambient
Temperatures
Ambient temperature can affect the capacity and life of the
Enhanced VR battery. The temperature that has the most direct
effect is the battery’s internal temperature. All valve-regulated
lead-acid batteries use oxygen recombination technology, which
generates more heat than conventional flooded batteries. As a
result, the battery temperature is often higher than the ambient
temperature.
Table 7-A: Recommended String Float Voltages
Temperature
Compensation
Feature
Module
Type
23-Module Plants 24-Module Plants
Volts/Module Volts/String Volts/Module Volts/String
None or Step
2VR250E
2.25 51.75 ± 0.23 2.25 54.00± 0.24
2VR375E
Slope
2VR250E
2.27 52.21 ± 0.23 2.27 54.48± 0.24
2VR375E
Temperature
Compensation
Feature
Module
Type
12-Module Plants
Volts/Module Volts/String
None or Step
4VR125E
4.50 54.00± 0.24
4VR125EL
Slope
4VR125E
4.54 54.48 ± 0.24
4VR125EL
Caution
AC charging ripple greater in magnitude than 10mV peak
to peak per cell or longer in duration than 8mSec should
not be used without prior consent of Lucent Technologies;
failure to comply can void the warranty.