Xilin CDDR, Руководство по эксплуатации, Страница: 22 / 60

18
charge. The temperature of electrolytic solution during the process of charging must not exceed 45
℃
and
when it is close to 45
℃
, the charging current should be reduced by 50% or the charging should stop
temporarily. Wait till the temperature reduces to 35
℃
to continue the charging. The charging time,
however, should be properly prolonged.
6
．
1
．
6 Fully charged basis: When the voltage during the second stage charging reaches 31.2V (12
×2.6V = 31.2V), the variation of the voltage is no greater than 0.005 (V); the density of the electrolytic
solution reaches 1.280 ±0.005 (25
℃
), no obvious variation in 2 hours and there are fine air bubbles
appear violently, it can be deemed that the batteries are fully charged. The charged power capacity is 4-5
times of the rated capacity and the charging time is about 70 hours.
6
．
1
．
7 In order to accurately control the sulfuric acid content of the electrolytic solution, the
electrolytic solution density of the batteries should be examined during the last period of charging. If
there is inconsistence, adjust with distilled water or sulfuric acid with a density of 1.40. The electrolytic
solution density and the liquid surface should be adjusted to the stipulated value within two hours in the
charging state.
6
．
1
．
8 After the initial charging is completed, the surface of the batteries should be cleaned. Close
the cover of the open cover type liquid hole plug and then the batteries can be used.
6
．
． ．
．
2 Use and maintenance
6
．
2
．
1 In order to guarantee the service life of the batteries, the batteries in use should be fully
charged. Insufficiently charged batteries must not be used. During the process of use, close attention
should be paid to the discharge extent. Over discharge is prohibited---the voltage reduces to 1.7V per
battery (when the total voltage reduces to 1.7V×12 = 20.4V). When the density of the electrolytic
solution reduces to 1.17, discharging should be stopped and charging should be conducted at once. The
batteries should not be placed idle for a long period of time. The supplementary charging frequently
conducted during the process of use is called common charge.
6
．
2
．
2 Common charge: The first stage current of common charge is 30A and that of the second stage
is 15A. The charging method is the same as that of initial charge. The charged volume is
130-140 % of the discharged volume and the charging time is about 12 hours.
6
．
2
．
3 The batteries in normal use should avoid over-charge, but over-charge must be properly
conducted for the batteries in following situations, i.e. equalizing charge.
a. The “lag-behind” batteries--- batteries with a voltage lower than that of the other batteries in
the discharging process and the batteries having been repaired for failure. (When equalizing
charge is conducted, the positive and negative poles of the “lag-behind” battery should be
respectively connected with the positive and negative ends of the charger, the DC power supply,
and the charge should be conducted independently.)
b. Equalizing charge should be conducted for the batteries in normal use every 2-3 months.
c. Equalizing charge should be conducted for the batteries that have not been used for a long
period of time before use
2
．
4 Equalizing charge
：
a. Charge with a 4A current
b. When the charge voltage reaches 31.2V (12 ×2.6V = 31.2V) and air bubbles occur in the
electrolytic solution, the current should be reduced by 50% (2A) and continue to charge.
c. When the batteries are in the state of fully charged, stop for 0.5 hour and charge again
with a 1A current for one more hour.
d. Stop for another 0.5 hour and charge with a 1A current for another one hour.
e. Repeat according to item d till air bubbles occur violently in the batteries once the charger
is switched on.