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
- 7956 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 are carbondioxide and dcp used in fire extinguishers
Which type of DG need Netral Earthing?
What is mean 2XWY
i want design of D.C.MOTOR 1HP 960RPM AND 2HP 960RPM ITS URRGENT
define as synchronous generator
Testing report of Earthing of 3.15 MVa PTR.
what are pilot cells
how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps
how to build a network which step down 415v to 1v rms
what is vA rating and class of a ct.
how give earthing conection to household equipment?
Hello sir i m student of gtu .what is idp.
how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .
1.how many types of relays? 2.difference between ATS& STS?
How does cost of generation from hydropower plant compare with other sources of electricity?
