Answer / ratnakar

we step up the voltage for reducing the losses,step down
level of voltages depending on applications&line length b/w
sub station to load centers.we can directly step down the
voltage from 33kv to 433v in various industrial applications

Answer / anil

if we need to step down from 33kv to 415V and same is
possible. but the problem is size of transformer due to
heavy current in secondary side. winding is required. this
will make the transformer bulky. not easy to transport to
load center along with various operation problem.

Answer / edwin

i think it is a question of transformer availability.most
tx have standardised voltages.the other reason is safety.

if the diameter of a conductor is 'R' then what is the distance between two bundle conductor in a phase?

1 Answers   NTPC,

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Wind mill

0 Answers   Suzlon,

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0 Answers  

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A three phase load, around 4 km away from the 11/0.433KV distribution transformer (Neutral of Transformer is solidily earthed) and consisting of mainly very costly and sensitive electronic equipments is giving trouble due to high voltage difference between neutral and body earth. Whether this problem can addressed by connecting neutral at the load point solidly to earth?

3 Answers  

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what is the difference between 2phase & 3 phase?

1 Answers   NTPC,

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How Arc Produced in Circuit Breaker When the contacts of the circuit breaker open.

1 Answers  

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how to differentiate a mpcb,mcb with a contactor? Explain their working operation

0 Answers   L&T,

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What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

0 Answers   JSW,

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list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

0 Answers  

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I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

0 Answers   Jindal,

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HT motors are generally connected in star, what will be the effect if we connect HT motor in Delta?

6 Answers   Equate, Ion Exchange,

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what are the types of electromagnetic forces developed in practical transformer?

0 Answers   APC, BPCL Bharat Petroleum, Electrical Tech,

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