Can anyone explain how to calculate the individual primary 3phase currents with unbalanced secondary load currents on a DY transformer neutral grounded.
Should the ground rod of the utility transformer be connected/bonded to the service entrance ground rod. Is there a minimum separation between the two system rods.
Should the electrode (neutral grounded) of an 11kv/400v DY padmount transformer be bonded to the ground electrode of the distribution panel that the transformer powers. The neutral and ground are bonded together at the panel. If the two ground systems should not be connected then what is the...
Are there any negative issues like interference that could arise from installing the telephone line and the computer cat 5 cable in the same pvc conduit to a desk station?
I propose to install a row of receptacles supplied by a conduit with two circuits and alternate the circuits to the
receptacles. Is it a violation to pass both circuits through the receptacle, one connected to that outlet and the other passing through to the next outlet.
Thanks for the input so far guys. I have a copy of C62.92 and it is silent on the issue of multiple unit connected generation systems.So too is the Westinghouse T&D book. For clarification the bus is 11kv Y and the transformers neutrals are connected to the station ground grid through individual...
With several unit connected generators synchronised on to a bus through DY transformers, should just one transformer neutral be grounded or all transformer neutrals?The bus feeds several uniground wood pole distribution feeders. What are the pros and cons of both arrangements? Any reference...
In the U.K. the earth loop resistance is normally measured. Can anyone advise me if this value is the same as the electrode resistance at a building, assuming a TT system of earthing and only the electrode is used for earthing. If not is there an arithmetic relationship.
