Explain the working principle of Vacuum circuit breaker and
Air circuit breaker
- 10 Answers
- 45984 Views
- HP, Trinidad and Tobago Electricity Commission T TEC, I also Faced
- E-Mail Answers
Answer Posted / t eswara rao
During the breaker opening operation an arc will be produced
in between moving contacts and fixed contacts. It require
any medium to produce an arc. If there is no medium, there
is no arc. No medium means it is empty or VACUUM. So this
technique is used for quenching the arc in the vacuum
circuit breakers. So it is very clear that in perfect
vacuum, there is no arc produced.
In Air Circuit Breaker, air is used as arc quenching medium.
it is very simple in construction and cost is also low where
as the Vacuum circuit breaker is very costly due to its its
complicated construction for maintaining the vacuum in the
vacuum chamber
| Is This Answer Correct ? | 68 Yes | 19 No |
Post New Answer View All Answers
how the B-H loop obtain under the static condition
what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?
What is the principle of HIGH SPEED DIRECT DRIVE MOTOR ?
hello friend i wish to study a course related to the electrical construction, controlling and monitoring , which course i want to study? pls give me the name of institute?
can any one suggest paper presentation topies for electrical engg?
how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm
Pl. give me checklist for installation & commissioning of machine tool.
what's the exact magnitude of current, flows through Neutral?
What is the function of attenuator in cro?
What is the lifetime of a Thyristor? Is there a recommended lifetime for thyristors after which they should be replaced?
how i can calculate the size for fire cable
How they LT panel busbar size choose
Can anybody tell abt concrete encased earthing or grounding?
