How big (size) can the tertiary winding be in transformer?
Can we load the tertiary winding, if yes then how much we
can load it?

Answer Posted / rabramovitz

Tyically for stabilizing an oscillating neutral, about 35%
of the KVA (or VA) supplied. Yes, it can be loaded, as long
as you don't exceed the current rating for its gage (do not
exceed current which causes a temp rise at or below the
class of the transformer). The current capability (if
properly designed)will be about a third of a primary phase
current normalized to the tertiary ratio. (call it NI/3)on
a per phase basis.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

ANY ONE TELL ME ABOUT generator synchronization panel panel to synchronise 3 gen of 250kva both automatic and manual. 2 gen output vol 415 3ph, 1 gen output vol 400 3ph SEND THE DETAILS DIAGRAM ON THIS EMAIL ADDRESS ayazleo@hotmail.com as soon as possilble best ragrds electrical engineer ayaz mahmood SAUDI TECH

3711


What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?

538


what is self capacitance of inductor

1844


What is transient response?

670


what is the differencce inn series and cascade connection??

4244






why connecting surge unit in contactor coil

1390


how to measure dc earth leakage current?

2604


How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.

1342


what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?

1901


How earthing of switchgear system to be done.

1460


we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

1071


Which motor is 3.3 or 11kV more reliable, in terms of efficeancy,maintenance, reliability.

1614


Why neutral point is consider as zero potential?

2043


what is the formula for computing cable tray size & capacity

1716


difference between servo motor and synchronous motor

1882