Answer / tanmay kumar

No,we have to make it manually by reseting the operated relay.

Answer / jaydeep

FIRST OF ALL SWITCHGEAR ARE CONECTED AND THAN AFTER C.B.
ARE CONNECTED B'Z SWITCHGEAR ARE USED TO DISCONNECT OR
RECONNECTION OF THE SYSTEM FROM LIVE ENERGIES .

Answer / yusuf

Once the Fault Cleared the CB Can be closed automatically
using Auto Re closure Relays... Auto reclosing relays are
available on different brands like SIEMENS, ABB and etc.,

Answer / gavin

Circuit breaker miniture as found in a consumer unit or
air as in a switch panel. MCB will not auto reclose as per
BS7671.
ACB will auto reclose using shunt coil but not if earth
fault is not reset first manually

Answer / mg

There is autoreclose function in protection relay(autoreclose relays) if fault is cleared the relay give close command to CKT breaker.

Answer / iqbal.aizza

with the help of springs which are placed both sides of
contacts.

how will calculate the safe starting current of 3-phase squirrel cage induction motor?

0 Answers  

Where is 2 phase supply used commercially?

3 Answers   NTPC,

For 300 MW plant what is the distribution voltage

6 Answers  

If we have 630kva step down transformer to operation 3 phase motor 150 kva which size of cable is used? at circuit breaker to 3 phase motor or to electrical board

1 Answers  

I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV this type of ratio. why cant we use other voltage ratio like 54KV / 99KV et.,

8 Answers   College School Exams Tests, Hino, ITC Infotech, Reliance, UPRVUNL,

How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?

0 Answers  

as per BIS supply voltage in India is ......

9 Answers  

Why PT is fitted in incomer panel.....?

1 Answers  

why a motor rating in KW?

7 Answers   ABG Shipyard,

is emf is indued if dc is passed through coil

5 Answers  

any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.

0 Answers