Whisper Power Supreme WP-BC 12/100-3 User Manual page 19

Understanding the Protection Features
Derating the Charging Current: When the charger senses the environmental temperature is
above 50°C, the maximum charger current will de-rate to 1/2 of the value (A02 warning code
will display). The charger will recover automatically back to the maximum charging current
when the environmental temperature drops to below 45°C.
Over Temperature Shutdown: When the charger senses the environmental temperature is
above 60°C, the charger will shut down. It will recover automatically when the environmental
temperature drops to below 45°C.
Battery Reverse Polarity: When a reverse polarity is connected to the battery bank, Fault Code
E03 on display will appear. In some case, the user replaceable DC fuse located near the DC
Output terminals may blow and Error code E08 will display.
AC Input Voltage Protection: The charger will shut down when it senses the AC input voltage is
outside of the operating range. A fault code will display. The charger will recover automatically
when it senses the AC input voltage has returned to the normal operation range.
Disconnecting the Battery Bank: To avoid any spark on the battery terminal, always disconnect
AC Input before removing or disconnecting the battery.
BTS Shutdown (with optional BTS in use): To avoid any battery damage especially when a
Lithium battery is used, the charging cycle will be terminated when the optional BTS senses the
battery temperature is above 60 C or below 0C.
Charging Dead Batteries
The charger is designed to charge batteries with the voltages on their terminals greater than 3Vdc.
For lower voltages, the batteries can be temporarily and partially charged using the charger's
"Program" ("Power Supply") setting, before returning to the proper battery type setting.
Reinitiating the charging cycle and the battery connection status manually
When all the channels in use (the ones with battery connected) are already in 'Floating' stage, with
the display showing "FUL", you can reinitiate manually and immediately the charging algorithm
from the Bulk stage. To do so, you need to reset the unit by disconnecting the AC power that feeds
the charger, and then, the battery positive on CH1 as well. Wait until the display goes off, and then
reconnect both the CH1 positive and the AC-Input power.
Understanding the Error Codes
Error codes will be shown on the display when either an internal fault such as high internal
temperature or external fault like AC input voltage out of range is detected. The unit will shut
down.
WhisperPower Battery Charger 12 V 100 A 19