Issue: The UPS reports “Internal RBC Disconnected”, or “Battery Pack X, RBC Y is Disconnected”
Product Line: Smart-UPS SRT models
Note: This does not apply to SRTL3KRM1UC, SRTL5KRM2UI, or SRTL5KRM2UT UPS models, or UPS models with SRTG prefix
Cause: Smart-UPS SRT models require a certain load to be connected to the system depending on the number of battery packs connected to the UPS, to ensure there is sufficient current shared across the batteries for proper battery recognition
Resolution: Ensure there is at least 10% load connected to the UPS, and an additional 5% load for each connected battery pack. If any batteries are still reported as disconnected, initiate a self-test, as a momentary transfer to battery will ensure proper battery detection. If the self-test command is refused, transfer the UPS to battery by disconnecting it from AC input supply for a few seconds.
Note: With lower load the UPS may report erroneous “Internal RBC Disconnected”, or “Battery Pack X, RBC Y is Disconnected” events but in case of a power outage these events will not impact the actual battery runtime of the UPS.
Product Line: Smart-UPS SRT models
Note: This does not apply to SRTL3KRM1UC, SRTL5KRM2UI, or SRTL5KRM2UT UPS models, or UPS models with SRTG prefix
Cause: Smart-UPS SRT models require a certain load to be connected to the system depending on the number of battery packs connected to the UPS, to ensure there is sufficient current shared across the batteries for proper battery recognition
Resolution: Ensure there is at least 10% load connected to the UPS, and an additional 5% load for each connected battery pack. If any batteries are still reported as disconnected, initiate a self-test, as a momentary transfer to battery will ensure proper battery detection. If the self-test command is refused, transfer the UPS to battery by disconnecting it from AC input supply for a few seconds.
Note: With lower load the UPS may report erroneous “Internal RBC Disconnected”, or “Battery Pack X, RBC Y is Disconnected” events but in case of a power outage these events will not impact the actual battery runtime of the UPS.
Publicado para: Schneider Electric Portugal
