Hoppecke OPZV Series Operating Instructions

Operating instructions
Valve regulated stationary lead-acid batteries

Specifications:

Nominal voltage U : 2.0 V x number of cells
N
connected in series
Nominal Capacity C = C : 10 hour
N 10
discharge (see type label)
Nominal discharge current: I = I
N
Final discharge voltage U : 1.80 V/Cell
s
Nominal temperature T : 20°C
N
Valve regulated stationary lead-acid batter-
ies consist of cells which for their entire ser-
vice life must not be topped up with water.
Excess pressure valves are used as vent
plugs and will be destroyed if opened.
Observe operating instructions
and display visibly near to the
battery.
Work on batteries only after
instruction by qualified staff.
No smoking. No open flame,
embers or sparks in the vicinity
of the battery, to avoid risk of
explosion and fire.
Wear eye protection and protec -
tive clothing when working with
batteries.
Observe accident prevention re-
gulations, also DIN EN 50272 T2,
DIN EN 50110 Part 1!
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
splashes on clothing should be
washed out with water!
Explosion and fire risk, avoid
short-circuits.
Warning! Metal parts of the bat-
tery cells are always live. Never
place foreign objects or tools on
the battery.
Electrolyte is highly corrosive. In
normal operation there is no
possi bility of contact with the
electrolyte. Should the casing be
destroyed, the combined electro-
lyte released is as corrosive as
liquid electrolyte.
Monobloc batteries/cells are very
heavy!
Ensure secure installation! Use
only suitable conveying equip-
ment!
Dangerous electrical voltage.
Installation by:
on:
Commissioning by:
on:
C
N
:
10
10 h
Safety markings affixed by:
on:

1. Commissioning

Before commissioning all cells/blocks must
be inspected for mechanical damage, cells
must be connected with the correct polarity
and connectors firmly seated.
The following torque applies for screw
connec tors:
M8 with 20 Nm ± 1 Nm,
M5/M6 with 8 Nm ± 1 Nm.
If necessary the terminal covers must be
put on.
With charger off and loads isolated, connect
battery to the direct current power supply,
maintaining correct polarity (positive termi-
nal to positive post).
Switch on the charger and charge as de -
scribed in section 2.2.

2. Operation

For the assembly and operation of statio nary
battery installations DIN EN 50272 Part 1
and DIN EN 50272 Part 2 resp. IEC 62485-
2 apply.
The battery must be installed in such a way
that an ambient temperature difference of
> 3°C cannot occur between individual
cells/blocks.

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, including par-
tial discharge.

2.2 Charging

The charging procedure with limit values as
defined under DIN 41 773 (IU characte ris -
tic) may be used.
Depending on the system at hand, char-
ging may be carried out under the following
operating modes (in accordance with DIN EN
50272 Part 1 draft).
a) Stand-by parallel operation and floating
operation
Here the load, direct current source and bat-
tery are continuously connected in parallel.
This means that the charging voltage is the
operating voltage of the battery and at the
same time the battery system voltage.
Under stand-by parallel operation, the direct
current source is at any time capable of sup-
plying the maximum load current and the
battery charging current. The battery only
supplies current when the direct current
source fails. The charge voltage should be
set at 2.25 V ± 1% x number of cells in
series, measured at the battery's terminals.
To reduce the recharging time a charging
stage can be applied in which the charging
voltage is max. 2.35 V x number of cells
(stand-by parallel operation with recharging
stage). Automatic changeover to the char-
ging voltage of 2.25 V ± 1% (2,27 V ± 1%
for power.com H.C, power.com XC, dry.power
and net.power 12 V 92 as well as 12 V 170)
x number of cells in series follows.
With floating operation the direct current
source is not able to supply the maximum
load current at all times. The load current
intermittently exceeds 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 approx. 2.27 to 2.30 V x
number of cells following consultation with
the battery manufacturer.
b) Switch mode operation
When charging, the battery is separated from
the load. The charge voltage of the battery is
max. 2.35 V/cell. The charging process must
be monitored. When the charge current has
decreased to 1.5 A/100 Ah nominal capacity
at 2.35 V/cell, the battery is switched to
float charging as under section 2.3 or switch -
ing takes place on reaching 2.35 V/cell.
c) Battery operation (charge/discharge)
operation
The load is supplied only by the battery. The
charging method depends on the user and
must be clarified with the battery manufac-
turer.
2.3 Maintaining the full charge (float
charging)
Devices complying with the provisions of
DIN 41773 must be used. They are to be
set so that the average cell voltage is 2.25 V
± 1% (2,27 V ± 1% for power.com H.C,
power.com XC, dry.power and net.power 12 V
92 as well as 12 V 170).

2.4 Equalising charge

Because it is possible to exceed the permitted
load voltages, appropriate measures must be
taken, e.g. disconnection of the load.
An equalising charge is necessary after an
exhaustive discharge and/or after an inade-
quate charge; it can be carried out at a con-
stant voltage of max. 2.35 V/cell for up to
48 hours. The end of equalising charge is rea-