why corona ring is used in out door switchyard lightning
arrestor
- 3 Answers
- 13275 Views
- I also Faced
- E-Mail Answers
Answer Posted / hardik bhesaniya
Corona is a effect of Extra High Voltage either due to switching over voltage or sue to lightning over voltage. The role of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Please explain me abt PQ diagaram in the power sector.
Single line digram for 11 kV to distribution use go,la and do
Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected
HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ?
what is difference between 2 pole structure and 4 pole structure in transformer yard
Which motor connection is preferable star-delta or delta-star?
why are distributed windings generally used in alternators?
Why a Permanent Magnet Generator has higher frequency as compared to frequency of main alternator?
How can we increase the capacity of Energy.?
what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW
what is the difference between gas group b and gas group c electrical equipment construction wise?
what are the analog quality input for protection function?what are minimum reqiments?
What is voltage ratio of a transformer?
What is the end effect of linear induction motor ??
we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain
