Charging The Battery; Manual Characteristic Curve Switchover; Battery Tests - AEG Protect 5.31 Series Operating Instructions Manual

5.4

Charging the Battery

5.5

Manual Characteristic Curve Switchover

5.6

Battery Tests

Protect 5.31/xxx-480-220-120 10 kVA - 120 kVA
ATTENTION:
If the SBS is blocked, there is no switchover to the SBS circuit!
This means that if the INV fails or is switched off by the operator,
the load circuit is no longer connected to the power supply. The
loads must then be manually reconnected by switching the INV
back on or activating the SBS (switch Q28 off and back on).
The battery is charged according to DIN 41772 in accordance with a
CVCC curve. This ensures that the battery is charged in the shortest
possible time and also prevents overcharging.
Battery charging is electronically controlled and monitored. Operating
faults are registered, causing the charging process to be interrupted.
Charging:
After a mains failure, for example, the battery is charged with a
constant current (e.g. 10 A/100 Ah). When the charging voltage is
reached (e.g. 2.35 V/cell for lead-acid cells), the control electronics
maintains this voltage constant at ±1% with decreasing current. When
the calculated charging time has elapsed, the battery is switched over
to trickle charging.
Trickle charging:
When the electronically controlled charging has been carried out, the
control unit switches over to trickle charge voltage (e.g. 2.27 V/cell).
Additional operating modes are available for special treatment of the
battery. These can be manually activated via the DOU using the
"SERVICE / REC OP. MODE" menu.
The works setting of the characteristic values can be changed via the
DOU in the menu "SERVICE / BATTERY VALUES". This allows ideal
adaptation to the existing battery.
Equalising charging:
Equalising charging is carried out in accordance with a CVCC curve,
including automatic switchover back to trickle charging after 8 hours.
As standard, the characteristic curve values correspond to the
charging values. The charging voltage can be adjusted separately.
Start-up charging:
Start-up charging is carried out in accordance with a CVCC curve,
including automatic switchover back to trickle charging after 8 hours.
The charging current and charging voltage can be adjusted
separately from the other characteristic curves.
The implemented battery tests can be started via the DOU in the
menu "SERVICE / BATTERY TEST", if they are enabled. The yellow
LED on the DOU signals an ongoing test. Status messages and
measured values of the battery tests are shown on the display.
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