Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / tej4fun
VCB stands for Vacuum Circuit Breaker
As the name suggests that the phenomenon of arc quenching will happen in Vacuum medium.
It is generally used in MV applications(3.3-36KV)
The main advantages of VCB being it has high dielectric strength(8 Times higher than air and 4 times higher than SF6) which makes it easier to quench the arc with less gap between the contacts. Also the life of VCB is considerably high owing to less maintenance and ease of Vacuum bottle replacement. Also unlike SF6 it is not a harmful to environment and less dangerous comparative to OIL CB. Generally the pressure maintained in Vacuum chamber is 10^-6 bar.
Regards
Raviteja V
| Is This Answer Correct ? | 2 Yes | 3 No |
Post New Answer View All Answers
armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?
what reactive how to maintain
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?
what is the difference between electrical and electronic choke?
How will be the single line diagram of series trip HT breaker? how it works?
What are the effects of electrical faults?
I don't understand why when we connect high voltage source in DC to electronic motor , we must add capacitor and resistor in parallel ? (I know that we use capacitor because we want to absorb the current that in the first second electronic motor in opposed with current course produce. ) what are the feature of Resistor and in such situation ?
How to calculate capacitor bank value to maintain unity power factor with some suitable example?
Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.
If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma
how the works electronic energy meter?
what is distribution board?
What is meant by rotor?
What do you mean by cogeneration? What its working principle?
