about transformer configuration


by damithfirst
Tags: transformer
damithfirst
damithfirst is offline
#1
Feb17-12, 11:49 PM
P: 2
i may need your help for following question.

15kva, 2300/230v, 50Hz transformer has voltage drop of 2% and 4% of load voltage, due to winding resistance and leakage reactance respectively, at full load. 230v is maintained at the secondary terminal. The full load copper loss is equal to the iron loss. All parameters are referred to the secondary side. find

1. the primary voltage at full load and unity power factor
2. the half load efficiency at 0.8 power factor lagging.
3. The load power factor at which the voltage regulation would be zero.
Phys.Org News Partner Engineering news on Phys.org
SensaBubble: It's a bubble, but not as we know it (w/ video)
WSU innovation improves drowsy driver detection
Faster computation of electromagnetic interference on an electronic circuit board
tiny-tim
tiny-tim is offline
#2
Feb18-12, 06:50 AM
Sci Advisor
HW Helper
Thanks
tiny-tim's Avatar
P: 26,167
hi damithfirst! welcome to pf!
Quote Quote by damithfirst View Post
i may need your help for following question.
you may indeed!
let's find out

show us what you've tried, and where you're stuck, and then we'll know how to help!
damithfirst
damithfirst is offline
#3
Feb18-12, 10:15 AM
P: 2
i am stuck in the begining with this text
"voltage drop of 2% and 4% of load voltage, due to winding resistance and leakage reactance respectively" what is this means? how can i add this data for any formula.

tiny-tim
tiny-tim is offline
#4
Feb18-12, 10:32 AM
Sci Advisor
HW Helper
Thanks
tiny-tim's Avatar
P: 26,167

about transformer configuration


hi damithfirst!
Quote Quote by damithfirst View Post
i am stuck in the begining with this text
"voltage drop of 2% and 4% of load voltage, due to winding resistance and leakage reactance respectively"
i think you are supposed to ignore the words "due to winding resistance and leakage reactance"

just read it as "voltage drop of 2% and 4% of load voltage"
jim hardy
jim hardy is offline
#5
Feb18-12, 09:33 PM
Sci Advisor
jim hardy's Avatar
P: 3,149
""i think you are supposed to ignore the words "due to winding resistance and leakage reactance" …
""

seems to me those words could be mighty important - might they suggest a complex impedance?

Take those "givens" one at a time.


Register to reply

Related Discussions
LCD configuration Electrical Engineering 2
E/Z Configuration Chemistry 5
Configuration comparison. Special & General Relativity 6
Need help with configuration factors Mechanical Engineering 0
IIS configuration Computing & Technology 8