From, which load current range ( upper - lower limit current)can Air circuit b

From, which load current range ( upper - lower limit
current)can Air circuit breaker used for in electrical
circuit.

Question Posted / rajan

4 Answers
7983 Views
ABC, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in e..

Answer / satya dev ( knight frank)

As per IS- we can use the ACB for 800 Amp.- 4000 Amp.

Is This Answer Correct ?

5 Yes

0 No

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in e..

Answer / rvg

For ACB's the upper load current range shall be selected
with some safety margin and some future capacity also to be
considered.

Is This Answer Correct ?

1 Yes

1 No

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in e..

Answer / 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

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in e..

Answer / abid ali khattak

we can use the air circuit breakers for 2amps upto 2,000
amps.as per the british standard.

Is This Answer Correct ?

0 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

what you mean by frequency of an igbt& how to find it?

1 Answers

What core magnetic balance test of transformer? How to do this test in a three phase Star delta (star-LV, Delta-HV) transformer? How to measure and where to measure? thanks and regards Austin

22 Answers Neutech, Power Grid, TSSPDCL,

what does the transformer connection symbol YNaod1 mean ?

3 Answers

2. A current i=(10+10 sin t)amperes is passed through MI type ammeter. its reading will be.........

0 Answers SSC,

how current flows in circuit?

11 Answers

can we calculate the diameter of the cable by its cross section?

1 Answers

We use ACB in LT and VCB in HT.But if we use VCB in LT and ACB in HT that what will be the effect on the system or any power range?

6 Answers Honda,

Draw a SLD of HT distribution EB grid up to users Transformer?