Answer / arun

yes. by using step down transformer (33Kv to 430V

Answer / jeff

yes you can, normally they use 33kv/11kv tranformer because
the side have more than 2 sustation and need more
transformer, for the 33/.433kv transformer is expensive
than 11/.433 transformer. so they just step down the HT
33KV to 11KV first than supply to two substation by using
11/.433kv transformer

Answer / engineering.force

One more important point you all have missed is about the
secondary winding current. If we step down from 33/11 KV the
secondary current will be less than if we step down from 33
KV/440 V, hence the secondary winding has to be accomodated
with above high value of current. This will lead to increase
in winding diameter, thus increasing the overall size of the
transformer, and also increase in the heating of the
secondary, thereby reducing the efficiency of the
transformer. And hence costly. So taking in the above
considerations, we have to design the step down voltage
level so as to make it cost effective and economical.

Answer / puneet kulshreshtha

IN PAST MANY OF TIMES WE USE 33/.430 KV S/S

BUT IT IS VERY EXPENSIVE SO WE USE 11/.430 S/S FOR EASY
COST AND TRANSPORTATION

Answer / gsamguna

we can use 33kv/ 440 transformer
who said cannot
if u want 33kvto 440 u want to install two transformer
33kv/11 and 11/440v
this s stupit answer ..
sure we can use 33kv/ .44 kv directly step down

Answer / ghanshyam singh

it will be dangerous as the transformers which converts 11
kv to 430 volts cant be installed in colonies

Answer / arup

for the industrial purpose we have to step down the voltage from 11kv to 430 v.no we can't step down 33kv to 430v

why we can stote dc? why we cant store ac?

0 Answers  

what is allowable current flows from phase to ground with out tripping the breaker

1 Answers  

How does frequency affect KVA rating of a transformer? If a 500 kva, 500 to 250 v, 60 hz t/f normally used in Canada is to be operated in Europe on 50 hz frequency then how will its KVA rating change? a-increase b-decrease c-remains same

1 Answers  

Transformer how to maintaince a check b check c check d check

0 Answers   DIC India,

what is v/f control in VFD?

0 Answers  

in DG synchronization system can i short R,Y,B- phase(DG-1) to R,Y,B Phase (DG-2), HOW IT WORK . WHAY WE NEED TO SYNCHRONIZATION.

1 Answers  

How to make two bulbs glow Alternatively?

2 Answers  

On load tap changer (OLTC) explode? Transformer Vector group: Ynd11 Rated Power: 353MVA Rated Current: 693A Voltage:294/20KV OLTC Type: T III Y1000 110/c 12193w Max Operation Current: 295A Step Voltage: 550V Arrangement in Tx windings: Y Connection Problem: Damage of Unit 1 Generator Transformer On Load Tap Changer (OLTC) Description of Incident: 9.00 a.m. :- Generator No Load test on excitation system started 10.30 a.m :- Carried out AVR change over test 11.30 a.m :- Preparation for Generator Manual Synchronizing test 12.00 a.m :- Manual Synshronizing test started. Observed incoming generator voltage higher than running voltage. CECR operator operated Generator Transformer OLTC to bring down the incoming generator voltage 12.03 a.m :-Generator Transformer abnormal alarm operated at Gen.Control Desk (CECR) CECR operater at Generator transformer bay informed that the transformer oil splashed out from OLTC. CECR operater informed that he heard explosion inside OLTC. Observed Oil level & Oil Flow alaram operated at Tranformer local annunciator. 12.05 am :- CECR operator 'Open Gen Field Breaker” 12.10 a.m. :- Elec1 team inspected the OLTC and found the OLTC rupture disk was broken and oil spilled at OLTC area. - Elec1 found the OLTC top cover bulging. Do anyone know why and possibility cause happen in this OLTC.

9 Answers  

will a transformer work when pulsating dc id applied to its primary?? what will be the result??

2 Answers   cemp,

hou we find and calculate the maximum lode capesity of transforer?

1 Answers  

when the PFR (POWER FACTOR REGULATOR)change a step to zero,one of the RCCB will triped off,is it the changing step of this PFR effect the RCCB?

2 Answers  

In Aeroplane what circuitry or method use for earthing?

9 Answers   Bhel, EDA, Wind World,