Battery Protection - Whisper Power 12-2000 User Manual

DESCRIPTIONS AND FUNCTIONS
If the "Smart Boost" function is activated {1126} and the power required by the consumer exceeds the power of the
source, the battery will be discharged (c) despite the presence of the grid or the generator. In this case the LED "charge"
(4) goes out. The consumers must ensure that they have average consumption that is less than the power of the source
(generator or public grid) in order to avoid a complete discharge of the battery. These situations are set out in the
following figure.
Charge cycle example with input current limitation and "Smart Boost"
If the BST temperature sensor is used, the voltage adjustment thresholds for the battery are corrected in real time by
means of the battery temperature. The value of this correction is set by the parameter {1139} in the parameter table
p34.
Much more complex charge profiles or exclusion of the charger can be configured using the WPC-PSCP/RCC
remote control.
Parameters of the battery charger is under the responsibility of the operator. Incorrect parameter that does
not correspond to the charging methods of the battery recommended by the manufacturer may be dangerous
and/or considerably diminish the battery service life. If the factory settings are modified, it is imperative that
the new values be entered in the parameter table p. 35
7.2.4.2 Battery charger current setting
The maximum charging current can be adjusted by the remote control WPC-PSCP/RCC. The parameter {1138} is part of
the basic parameters of the device and must be adjusted at commissioning, depending on battery capacity. It will be
chosen in principle a value between 0.1 and 0.2 x the nominal battery capacity C10. (eg 10A for a battery of 100 Ah/C10).

7.2.5 Battery protection

The battery is protected in all cases against deep discharge. The indicator (52) flashes once when the battery has reached
the disconnection threshold {1108} and the inverter will stop some time after {1190}. This threshold can be dynamically
corrected {1191} with an advanced algorithm that computes automatically the battery voltage compensation in function
of the instantaneous power (see below *). This correction may also be manually fixed {1532} by setting the low voltage
disconnection at full load {1109}. These dynamic corrections can be deactivated by setting the parameter {1191} . The
inverter will stop immediately if a critically low voltage value set by the parameter {1188} is reached. The inverter will
restart automatically when the battery voltage has reached the restarting threshold {1110}.
This restarting threshold {1110} can be automatically readjusted if the parameter {1194} is activated, in order to better
protect the battery against repeated cycling in an "almost empty " state of charge. The restarting threshold is then
incremented {1298} up to a maximum value {1195}, whenever the LVD (low voltage disconnection) is reached. The
restarting threshold will be reset to its initial value when the value of parameter {1307} is reached.
If the inverter is repeatedly {1304} encountering a low voltage disconnection in a short period {1404}, it will stop
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/ WPC / EN
February 2020