Answer Posted / nitin lothe
Its the protection scheme used for Power Transformers to
detect internal faults n also termed as Differential
Protection. If there is difference in currents on HV and
corresponding LV side of transformer of the same phase,
protection will operate.
| Is This Answer Correct ? | 118 Yes | 18 No |
Post New Answer View All Answers
previous year paper of ntpc bhel for degree in electrical enng
Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.
What is meant by control system?
whate is the meaning of balance/unbalance,in stabilizers type
How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?
What is the types of HT motor testing
What is difference between insulating medium and fault current interruption medium in a switching device.
We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
how to generator maintenance (A Check, B check,Etc)
Why we use duplex coil and hook switch in telephone system?
1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.
Write down the design procedure of commutaj.
Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT
What conditions are required for transformer to operate at low frequencies ?