text: <s>[INST] 700S F43 VoltageFdbk Loss Summary: DC=940V NO FAULT, DC=990V FAULTThe site use Ansaldo rectifier ,and the DC voltage is DC940V. 700S works well(Frame 10 385A) When change to AFE rectifer, and the DC voltage changed to DC990V. 700S generated F43 VoltageFdbk Loss.... Unbelievable!!! Thanks [/INST] nan \\n </s>