our company have 750 kva oil transformer.still we have
facing a problem that is when voltage is 11.5 kv coming
from HT side then LT-side voltage is 420v or above at tape
1.please give me best solution to decrease the voltage.

Answer Posted / bhupendra k. patel

We have started our own consultancy service on the same
field. We have solved no. of problems related to transformer
design.

The problem you have posted seems quite interesting for us
and we are in a position to solve it. Can you provide us
some elaborative details of your above mentioned problem.
You can send us the problem details through mail.

With regards,
B.K.Patel (R&D Division)

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What are the weight of 800KV DA,DB and DC type tower ?

2711


how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.

2304


What is current divider rule (cdr)?

839


how can calculate resistance box for 15 kw, 6 pole, RV-230, RA-42 motor

2891


what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)

2140






how to select the no. of brushes in a lap winding?

1761


how to avoid Saturation in C.T?

1578


What is mean by hot and cold loop testing? What is the difference between them?

610


Meaning of ingrace protection for motor.for ex IPXY

2362


For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

1530


How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

1634


1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

1772


i am electrical and elctronics engg passed out in 2009 want to attend for reliance placements.plz send me apttitude ,technical and hr question answers to my mail plz. my mail id-kat.bindas@gmail.com

1562


what is doid

2313


What are the material used for inductance coil?

703