Interested to Buy Any Domain ? << Click Here >> for more details...
From, which load current range ( upper - lower limit
current)can Air circuit breaker used for in electrical
circuit.
- 4 Answers
- 8127 Views
- ABC, I also Faced
- E-Mail Answers
Answer Posted / kalirajan.n
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).
In the 1980s and 1990s, the pressure necessary to blast the
arc was generated mostly by gas heating using arc energy. It
is now possible to use low energy spring-loaded mechanisms
to drive high-voltage circuit-breakers up to 800 kV
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
What is cable tray, its type, and its support?
Can anybody just suggest about the scope of Electrical design with ETAP software?Just guide me?
what is the difference between the characteristics of two different phase bushing of any transformer
what is the method of earthing of a transformer using electrodes?
what is the relationship between phase & neutral
if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .
what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.
describe the A.C. Generator Testing procedure
In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?
How many types are using in 220kv/400 kv swith yard
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?
where lt & ht capacitor used
Where is the best place to mount distribution panel in a house.
What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?
What is the drawback of class b amplifier? How is this minimized?
