GNB CLASSIC EnerSol 50 Instrucciones De Uso página 7

points 2.6, 2.7 and 2.8)! On reaching a fully
charged state, the charging process must be
stopped or switched to the float charge voltage
as in table 1. For charge current see point 2.8.
b) with alternative power supply
When using power supply units with solar mod-
ules or wind generators, the battery charger is
not able to supply the maximum load current at
all times. The load current intermittently exceeds
the nominal current of the battery charger. Dur-
ing this period the battery supplies power. This
results in the battery not being fully charged at
all times. Therefore, depending on the load the
charge voltage must be set at 2.23 V – 2.35 V x
number of cells. This has to be carried out in
accordance with the manufacturers instructions.
Recommended charge voltage for cyclical appli-
cation: Depending on the depth of discharge
and the load the charge voltage is adjusted
according to the specified values on table 1.
Range Charge voltage [Vpc]
EnerSol 2.32 - 2.40
EnerSol T 2.30 - 2.40
OPzS Solar 2.28 - 2.40
Table 1: Recommended charge voltage for cyclical
application
The charge voltage has to be adjusted to reach
the nominal electrolyte density ± 0.01 kg/l (see
technical data) once a month. If this is not the
case, it is necessary to increase the recom-
mended charge voltage stepwise by approxi-
mately 20 mVpc to a maximum of 2.40 Vpc
according to table 1 or carry out an equalizing
charge acc. to 2.6 every month.
2.3 Maintaining full charge
(float charging)
The devices used must comply with the stipula-
tions under DIN 41773. They are to be set so that
the average cell voltage is as in table 2 and the
electrolyte density should not decrease over a
lengthy period, if necessary the charge voltage
must be increased acc. to table 1.
Range Float charge voltage [Vpc]
EnerSol
EnerSol T
OPzS Solar
Table 2: Float charge voltage
2.4 Operating in uncontrolled partial state of
charge
Solar batteries have to be operated also at
states of charge less than 100 % due to sea-
sonal or other conditions, for instance summer:
80 to 100 % state of charge, winter: down to
20 % state of charge. The charge voltage must
be increased or an equalizing charge acc. to item
2.6 must be given if the nominal electrolyte den-
sity is not achieved at least monthly.
2.5 Operating in controlled partial state of
charge
The cycle life during daily cyclical application
can be increased when working in partial state of
charge if the installation and operating instruc-
tions, a maximum depth of discharge 80 % C
and following special operating conditions are
fulfilled:
Carrying-out of full re-charge plus equalizing
charge at 2.4 Vpc for at least 12 h (better 24 h)
and a current of at least 20 A /100 Ah C
35 A/100 Ah C )
10
– at least weekly with daily recharging up to
90 % C
10
– at least every 14 days with daily recharging
up to 95 % C
10
2.6 Equalizing charge
Because it is possible to exceed the permitted
load voltages, appropriate measures must be
taken, e.g. switch off the load.
Classic_Solar_de_e_fr_it_sp.indd 7
Equalizing charges are required after deep dis-
charges and/or inadequate charges, e.g. as des-
cribed in item 2.4.
They can be carried out as follows:
a) Using alternative form of power supply
– at constant voltage of max. 2.4 Vpc up to
72 hours (the number of hours increases
with less charging current acc. to table 3).
b) Using an external charger
– at constant voltage of max. 2.4 Vpc up to
72 hours
– with I- or W-characteristic as in point 2.8.
The electrolyte temperature must never exceed
55 °C. If it does, stop charging or revert to float
charge to allow the temperature to drop. The
end of the equalizing charge is reached when the
electrolyte density and the cell voltages no lon-
ger increase over a period of 2 hours (2 h-crite-
rion only applies to I- and W-characteristics).
2.7 Alternating currents
When recharging or boost charging up to 2.4
Vpc under operation modes 2.2 the value of the
alternating current is occasionally permitted to
reach 10 A (RMS) per 100 Ah C
In a fully charged state during float charge or
standby parallel operation the value of the alter-
nating current must not exceed 5 A (RMS) per
100 Ah C .
10
2.8 Charging currents
When charging with the IU-characteristic, the
charging current should be 10 A to 35 A / 100 Ah
C (reference values).
10
Exceeding this voltage of 2.4 Vpc increases
water decomposition. Charging in cyclical appli-
cation generates more heat. For that reason the
charging currents shown in the following table 3
must not be exceeded.
Charging
procedure
IU-characteristic
I-characteristic
W-characteristic
Table 3: Maximal charging currents with different
2.27
characteristics
2.25
2.9 Temperature
2.23
The recommended operating temperature range
for lead acid batteries is 10 °C to 30 °C. All tech-
nical data apply to the nominal temperature 25 °C.
Higher temperatures will seriously reduce ser-
vice life. Lower temperatures reduce the avail-
able capacity. The absolute maximum tempera-
ture is 55 °C.
2.10 Temperature­related charge voltage
A temperature related adjustment of the charge
voltage within the operating temperature of 10° C
to 30° C is not necessary. If the operating tem-
perature is constantly outside this range, the
charge voltage has to be adjusted.
The temperature correction factor is -0.004 Vpc
per K. Thereby 2.4 Vpc must not be exceeded
and the voltage must not come below 2.15 Vpc
(EnerSol T: 2.17 Vpc).
2.11 Electrolyte
The electrolyte is diluted sulphuric acid. The
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nominal electrolyte density ± 0.01 kg/l (acc. to
technical data) is based on 25 °C when fully
charged and with the maximum electrolyte level.
Higher temperatures reduce electrolyte density,
(max.
lower temperatures increase electrolyte density.
10
The appropriate correction factor is -0.0007 kg/l
per K.
Example: electrolyte density of 1.23 kg/l at 40 °C
corresponds to a density of 1.24 kg/l at 25 °C or
an electrolyte density of 1.25 kg/l at 10 °C cor-
responds to a density of 1.24 kg/l at 25 °C.
3. Battery maintenance and control
The electrolyte level must be checked regularly.
If it drops to the lower electrolyte level mark,
purified water must be added in accordance with
DIN 43530 Part 4 (maximum conductivity 30 µS/
cm). Keep the battery clean and dry to avoid
leakage currents. Plastic parts of the battery,
especially containers, must be cleaned with
clean water without additives.
At least every 3 months measurements and
recording:
•
•
•
•
•
It is necessary to carry out an equalizing charge
acc. to 2.6 if the cell/block discharge voltages
differ more than those in table 4 from the aver-
age discharge voltage and/or if the electrolyte
density of the cells of a battery string deviates
from the average-value more than - 0.01/+ 0.02
kg/l (reference values).
.
Table 4
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Annual measurements and recording:
•
•
•
•
Annual visual check:
•
•
•
•
Max. charging Charging
4. Tests
current voltage
Tests have to be carried out according to IEC
[A/100 Ah C ] [Vpc]
60896-11.
10
35 2.40
Capacity test, for instance, acceptance test
5 2.60 - 2.75
on site: In order to make sure the battery is fully
charged the following IU-charge methods must
7 at 2.40
be applied: Option 1: float charge (see table 2),
3.5 at 2.65
≥ 72 hours. Option 2: 2.40 Vpc, ≥ 16 hours (max.
48 hours) followed by float charge (see item 2.3),
≥ 8 hours. The current available to the battery
must be between 10 A/100 Ah and 35 A/100 Ah of
the C
5. Faults
Call the service agents immediately if faults in
the battery or charging unit are found. Recorded
data as described in point 3 simplify the trouble-
shooting and fault clearance. A service contract
for example with Exide Technologies facilitates
detecting faults in time.
6. Storage and taking out of operation
To store or decommission cells/blocs for a lon-
ger period of time, they should be fully charged
and stored in a dry and cold but frost-free room,
away from direct sunlight. To avoid damage, the
following charging methods can be chosen:
1. Refreshing charges every three months as
2. Float charging as under point 2.3.
7. Transport
Cells/block batteries must be transported in an
upright position. Cells/block batteries without any
visible damage are not defined as hazardous
goods under the regulations for transport of haz-
ardous goods by road (ADR) or by rail (RID). They
must be protected against short circuits, slipping,
upsetting or damaging. Bloc batteries may be
suitably stacked and secured on pallets (ADR
and RID, special provision 598). It is prohibited
to stack pallets. No dangerous traces of acid
may be found on the exteriors of the packing
units. Cells/bloc batteries whose cases leak or
Battery voltage during discharge
Voltage of some cells/block batteries
Electrolyte temperature of some cells
Battery-room temperature
Electrolyte density of some cells
2 V-Cell 6 V-Block 12 V-Block
–0.2 V –0.35 V –0.49 V
Battery voltage
Voltage of all cells/block batteries during
discharge
Electrolyte temperature of all cells
Electrolyte density of all cells
Screw connections
Screw connections without locking devices
have to be checked for tightness
Battery installation and arrangement
Ventilation the battery room
-capacity.
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described under point 2.6.
At average ambient temperatures of more
than the nominal temperature shorter inter-
vals can be necessary.
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