Why the bypass transformer input is fed from Normal LV Switchboard and the rectifier transformer is fed from Emergency LV Switchboard? If so, how the outputs are synchronised?
Not sure I've pictured your setup correctly, but often the bypass is there for maintenance purposes - i.e. to keep the loads supplies when something (anything) in the normal chain of supply is down for any reason - including times when the downtime exceeds the duration the UPS can supply for - so it's quite usual to have the maintenance bypass sourced from a supply that's as separate as possible from the "normal" supply.
Not sure I've pictured your setup correctly, but often the bypass is there for maintenance purposes - i.e. to keep the loads supplies when something (anything) in the normal chain of supply is down for any reason - including times when the downtime exceeds the duration the UPS can supply for - so it's quite usual to have the maintenance bypass sourced from a supply that's as separate as possible from the "normal" supply.
