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Installation, commissioning and operating instructions for valve-regulated stationary lead-acid batteries
7140203153 V1.4 (09.2018)
Installation, commissioning and operating instructions for valve-regulated stationary lead-acid batteries
7140203153 V1.4 (09.2018)
battery discharge
discharge characteristic
refer to the data sheet
and project data
refer to the data sheet
and project data
recommended (DOD) cycle operation
50%
50%
max. depth of discharge (DOD),
immediate recharge is necessary
80%
80%
max. discharge
limited by battery fuse
and cable
limited by battery fuse
and cable
proposal for characteristic for deep discharge
protection [U=f(I)]
comment:
deep discharge protection by switching off
relating to a constant voltage value is forbidden!
2.01 V/c at I<=0.16 x I10
1.81 V/c at I>=4 x I10
linear interpolation at
0.16 x I10 < I < 4 x I10
2.01 V/c at I<=0.16 x I10
1.90 V/c at I>=4 x I10
linear interpolation at
0.16 x I10 < I < 4 x I12
Tab. 7-1: Charge and discharge parameters
7.2 Alternating currents
Depending on the charging equipment, its specification and its characteristics, superimposed alternating
currents may contribute to battery charging current. Alternating currents and the corresponding reaction by the
connected electrical loads may lead to an additional battery temperature increase, and – consequently – to a
shortened battery service life as a result of stressed electrodes (micro cycling).
The alternating current must not exceed 1 A (RMS)/100 Ah nominal capacity.
7 Settings for charging HOPPECKE sun
| power
VR L
(OPzV solar.power/
OPzV bloc solar.power)
and sun
| power
VR M
(solar.bloc)
batteries
This chapter contains instructions for charging of HOPPECKE
sun
| power
VR L
(OPzV solar.power/OPzV bloc
solar.power) battery cells and battery blocks in solar applications.
7.1 Charge and discharge parameters
Parameter
sun
| power
VR L
OPzV solar.power
sun
| power
VR M
solar.bloc
battery charge
max. charging current
6 x l10
6 x l10
standard charge (regular operating cycles)
characteristic
IU
(with subsequent
switchover to float)
IU
(with subsequent
switchover to float)
max. current (consider the fuses and cable lengths)
6 x l10
6 x l10
max. voltage absorption phase
2.4 - 2.5 V/cell
2.4 V/cell
recommended absorption time
180 min
180 min
absorption time full charge
6 h
6 h
frequency/cycle, based on time period (full charge)
14 days
14 days
float charge
No change-over due to a
current threshold!
No change-over due to a
current threshold!
voltage
2.25 V/cell +/- 1%
2.25 V/cell +/- 1%
temperature correction
<20 °C: -3 mV/K
>=20 °C: 0 mV/K
<20 °C: -3 mV/K
>=20 °C: 0 mV/K
equalization charge (frequency depending on which of the following two criteria occurs first)
frequency/cycle, based on capacity throughput
10 x Cn
10 x Cn
frequency/cycle, based on time period
40 days
40 days
characteristic
IU/IUIa
(with subsequent
switchover to float)
IU/IUIa
(with subsequent
switchover to float)
comment to the characteristic
At IUIa characteristic:
current in Ia phase max.
0.8 A/100 Ah
C
10
for 2 to 4 h
At IUIa characteristic:
current in Ia phase max.
5 A/100 Ah
C
10
für 2 bis 4 h
max. current (note the fuses and cable lengths)
6 x l10
6 x l10
max. voltage absorption phase
2.55 V/c
at IU-characteristic
2.4 V/c
at IUIa-characteristic
2.5 V/c
absorption time
6 h
4 h
