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This drains the capacity of the battery and it is discharged. This status is
signaled by the battery symbol (LED Battery) lighting up, as well as an
intermittent acoustic signal every 4 seconds and every second before
switching off. With decreasing battery capacity, the alarm is activated
automatically. Depending on the expansion level, age and condition of the
battery and in particular on the load to be supplied, the standby time can
vary from a few minutes to several hours.
The inverter is switched off if the battery voltage drops below a factory-set
minimum voltage value. Never store the unit in this condition! The
discharged battery system should be recharged within a week at the
latest. When the voltage and frequency are within the tolerance range
once more, the inverter and the battery charger switch back on
automatically. The inverter then continues supplying the inverter and the
battery charger takes over charging the battery.
6.1.3 Bypass operation
If the inverter is overloaded or if overtemperature is detected, e.g. also if
an inverter defect is detected, voltage is supplied to the load via the
bypass that switches on automatically.
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