1)we r having one problem .one dry type
transformer(6.6KV/433V)is taking high magnetizing current on
delta connected HV side of "U" phase when compared to other
two phases.could any body tell the reason why it is happening?
2)why CT secondary side protection core has got higher
winding resistance when compared to that of metering core of
same CT?
Answer Posted / tanvir s.
Answerin ur 2nd query:
As we kno the flow of current is inversely proportional to the the resistance. Hence a lower resistance winding on the metering core of the CT would ensure a sensitive/accurate current(ampere) reading. Following the same principle the protection core has high resistance to limit the flow of over current and step it down to the calibration of the metering side.
Pls feel free to correct me if i am wrong or not clear
Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
distribution transformer de-rating formula on over limit iron losses
Why is the starting current high in dc motor?
why transformer tank is in rectangular shape what happen when it is in step shape
What is power in wattage of 8.5 TR AC
What are the different power system losses and how can it be eliminated?
which mm cable should be used for 1.hp immersible pump motor for the distance of 330 metres?
Please sent me some previous year question papers of BSNL-JTO telecom and RRB in ELectrical Engineering to varshashahi@yahoo.com
What magnetic circuit is formed in berry-type constructions and why?
if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please
What is meant by positive and negative feedback?
What we mean by vintage of an engine+Generator?
How to assume answer to electrical questions
Compare jfet’s and mosfet’s.
Is there any Electrical supervisor license which gives permit to work whole India rather than individual state??
What are the types of feedback oscillators?