The SUVT UPS normally has a charging current of 10% (FW 6.8 could be as high as 20%) of the capacity of the UPS. However there are cases where it may be necessary to limit or reduce this current. The reasons for this could be for example capacity limitations during Generator Operation or a requirement to reduce temperature in the event of problems with Air Conditioning.
Note: When this function is active, no fault will appear on the SUVT UPS.
The attached document describes this in greater detail.