Alpha Technologies OGi bloc - Manual

Nominal data:
Nominal voltage UN: 2.0 V x number of cells
Nominal capacity CN = C10: 10 hour dis-
charge
(see type plate and technical data in these
instructions)
Nominal discharge current: IN = I10:
Final discharge voltage Us:
see technical data in these instructions
Nominal temperature TN: 20°C
"LA": antimony content < 2% in the grids
(earthcarriers) of the positive electrodes
Non-compliance with operating instruc-
tions, repairsmade with other than original
parts, tamperingor use of additives for the
electrolyte (alleged"enhancing agents")
render the warrantynull and void.
1. Commissioning of filled and charged
batteries
Before commissioning all blocks must be
inspected
for mechanical damage, cells must be
connected with the correct polarity and con-
nectors firmly seated. The following torques
apply for screw connectors:
M 10 with 17 Nm +/ _ 1 Nm
If necessary the terminal covers must be put
on.
Check the electrolyte level in all cells. If nec-
essary
top up to maximum level with purified water
as under DIN 43530 Part 4.
With charger off and loads isolated connect
battery to the direct current power supply
maintaining correct polarity (positive terminal
to positive post).
Switch on the charger and charge as under
Section 2.2.
2. Operation
For the operation of stationary battery
installationsDIN VDE 0510 Part 1 (draft) and
DIN VDE 0510 Part 2 apply.
2.1 Discharging
Never allow the final discharge voltage of the
battery to drop below that assigned for the
discharge current. Unless the manufacturer
has specified otherwise, no more than the
nominal capacity is to be consumed. Charge
immediately after discharge as well as partial
discharge.
2.2 Charging
All charging procedures with their limit values
may be employed as under
DIN 41773 (IU characteristic)
DIN 41774 (W characteristic
DIN 41776 (I characteristic).
Depending on charger type and charging
characteristic alternating currents flow through
the battery superimposing onto the direct cur-
rent.
These alternating currents and the reaction of
the loads lead to an additional warming of the
battery and strain on the electrodes with pos-
sible resulting damage (see 2.5).
Depending on the system at hand charging
may be carried out under the following opera-
tions:
a) Stand-by parallel operation and floating
operation
Here the load, direct current and battery are
continuously connected in parallel.
Thereby the charging voltage is the operating
voltage of the battery and at the same time
the battery installation voltage.
With stand-by parallel operation the direct cur-
rent is at any time capable of supplying the
maximum load current and the battery charg-
ing current. The battery only supplies current
when the direct current source fails. The
charge voltage should be set at 2.23 V +/_1%
x number of cells measured at the battery's
terminals. To reduce the recharging time a
charging stage canbe applied in which the
charging voltage is 2.33 to 2.4 V x number of
cells (stand-by parallelparallel
operation with recharging stage). Automatic
changeover to the charging voltage of 2.23 V +/_ 1% x number of cells follows.
With the floating operation the direct current
source is not able to supply the maximum
load current at all times. The load current
intermittent
Iy supercedes the nominal current of the
direct current source. During this period the
battery supplies power. It is not fully charged
at all times.
Therefore, depending on the load the charge
voltage must be set at 2.23 to 2.30 V x
number of cells.
b) Switch mode operation
When charging the battery is separated from
the load. Towards the end of the charging
process the charge voltage of the battery is
2.6 - 2.75 V/cell. The charging process must
be monitored (see Sections 2.4, 2.5 and 2.6)
On reaching a fully charged state the charging
process must be stopped or switched to float
chargeas under Section 2.3.
c) Battery operation (charge/discharge opera-
tion)
The load is supplied only by the battery.
Hereby the charge voltage of the battery
towards the end of the charging process is 2.6
- 2.75 V/ cell. The charging process must be
monitored (see Sections 2.4, 2.5 and 2.6). On
reaching a fully charged state the charging
process must be
switched off. The battery can be switched to
the load as necessary.
2.3 Maintaining the full charge
(float charge)
Devices complying with the stipulations under
DIN 41773 must be used. They are to be set
so that the average cell voltage is
2.23 V +/_ 1% and the electrolyte density
does not decrease over a protracted period.
2.4 Equalizing charge
Because it is possible to exceed the permitted
load voltages, appropriate measures must be
taken, e.g. switch off the load.
Equalizing charges are required after exhaus-
tive discharges and after inadequate charges;
they can be carried out as follows:
- up to 72 hours at constant voltage of max.
2.4 V/cell - as under Table 1 with I and W
characteristic.
On exceeding the maximum temperature of
55°C charging must either be stopped or pro-
ceed with reduced current or be switched to
float charge to allow the temperature to drop.
The equalizing charge is completed when the
electrolyte densities and cell voltages no
longer increase within 2 hours.
2.5 Alternating currents with periodic
deviations
On recharging up to 2.4 V/cell as under oper-
ation modes a) to c) the actual value of the
alternating current is ocassionally permitted to
reach max. 20 A per 100 Ah nominal capacity.
Above 2.4 V/cells 10 A per 100 Ah nominal
capacity may not be
exceeded.
In a fully charged state with a charge voltage
of 2.23 to 2.30 V/cell the actual value of the
alternating current may not exceed 5 A per
100 Ah nominal capacity.
Observe operating instructions
and affix close within sight of the
battery!
Work on batteries only under
instrustions of skilled personnel!
Smoking prohibitet! Do not
expose battery to open flame
glowing fire or sparks as explo-
sion and fire hazard exists!
When working on batteries wear
protective glasses and
clothing!Observe the accident
prevention rules as well as DIN
VDE 0510, VDE 0105 part 1 !
Explosion and fire hazard, avoid
short circuits!
Caution! Metal parts of the battery
cells are always live, therefore do
not place items or tools on the
battery!
Electrolyte is strongly corrosive!
Monobloc batteries/cells are very
heavy! Ensure secure installation!
Only use suitable transport equip-
ment!
Dangerous voltage!
Acid splashes in the eyes or on
the skin must be washed out or
off with plenty of water.Then see
a doctor immediately. Acid on
clothing should be washed out
with water!
Assembled by:____________________________
on:______________________________________
Start-up by:_______________________________
on:______________________________________
Safety marking
affixed by:________________________________
on:______________________________________
OPERATING INSTRUCTIONS
Stationary vented lead-acid batteries OGi bloc