Interested to Buy Any Domain ? << Click Here >> for more details...
Why SF6,VCB,Oil Ckt Breakers are use in HT Side need brief
information ?
- 5 Answers
- 19456 Views
- Shell, I also Faced
- E-Mail Answers
Answer Posted / md ahmeduddin farooqi
the maintenance cost, I believe that SF6 Breaker is still
cheaper than the Vacuum Circuit Breaker because Vacuum
Circuit Breaker does have any limited operation life. For
Vacuum Circuit Breaker, there is limited operation life. You
need to change all the Vacuum breaker poles if the operation
life is up.
I don't know what is your intake voltage in this case, for
us, we use SF6 Circuit breakers for all the 11KV, 33kv.
Current interruption in a high-voltage circuit-breaker is
obtained by separating two contacts in a medium, such as
SF6, having excellent dielectric and arc quenching
properties. After contact separation, current is carried
through an arc and is interrupted when this arc is cooled by
a gas blast of sufficient intensity.
Gas blast applied on the arc must be able to cool it rapidly
so that gas temperature between the contacts is reduced from
20,000 K to less than 2000 K in a few hundred microseconds,
so that it is able to withstand the transient recovery
voltage that is applied across the contacts after current
interruption. Sulphur hexafluoride is generally used in
present high-voltage circuit-breakers (of rated voltage
higher than 52 kV).
| Is This Answer Correct ? | 18 Yes | 6 No |
Post New Answer View All Answers
why the neutral line is not giving shock to us if we touch it ?
Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?
how to select the no. of brushes in a lap winding?
what is the formula for computing cable tray size & capacity
what are the applications of PLC?
hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks
In power transmission using open belts or horizontal shafts it is preferable to have the slack side of the belt on the top because
What kind of socket shall be provided for window type air conditioner with cooling capacity upto 18000 BTU/hr
What is the actual calculation for transformer short circuit test?.
What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?
i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.
before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
What is the RME and explain the full form and what is the RME work?
What is self exciting?
