Interested to Buy Any Domain ? << Click Here >> for more details...
in our sub station why we step down firstly 33kv\11kv then
11kv to 430v. can we direct step down 33v to 430.v.
- 18 Answers
- 43462 Views
- Eaton, Siemens, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / prateek lau
yes it is possible to step down 33kv directly to 430v but
in that the turn ratio of the transformer would be large
and it will increase the size as well as cost of the
transformer.
| Is This Answer Correct ? | 29 Yes | 6 No |
Answer / devesh mishra
yes we can directly step down from 33/.433kv.
the lv side remains constant for 11 or 33kv & hv side
depends on load i.e,
for load upto 4 mva 11kv ht line is required,whereas
for load above 4 mva 33kv ht line is required.
| Is This Answer Correct ? | 40 Yes | 25 No |
Answer / cv raman
Genarally load centers are very away from the Generating
stations & scattered too.No of 11/.430KV SS are very high
compared to 33/11KV SS. In the view of construction cost of
the 33/11KV SS is high compared to the 11/.430KV SS. At
this condition , construction cost of 33/0.420KV is very
high compared to the cost of 33/11KV SS. If we propose
33/0.420KV SS in all load centers the no. of ss will become
very high and construction cost will be very high.
Technically we can go for strigh step doun but it is not
economical.
| Is This Answer Correct ? | 16 Yes | 4 No |
yes we can do it.
But it is not feasible since
1]feeder were design on constant current (44kV/11Kv-line
from nearest substation to distribution transformer)
2]Distributor lines designs for constant voltage(11kV/440V-
line from distribution transformer to home)
It is normal practise to have less flctuation at load end.
please revert back for any query?
Nilkanth--SIEMENS
| Is This Answer Correct ? | 16 Yes | 7 No |
Answer / paramesh dutta
Yes, it can be done and it is being done. There are many
such substations with voltage ratio of 33kV/0.433kV.
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / gurucharan singh
because of LV circuit breaker current capacity limitation
upto 3 MVA. Can directly step down from any voltage level
to 415V. but 3 MVA only that around 3150 A in Aluminium Bus
bar or 4000A in cu. bus bar. that about 3.5 MVA.
| Is This Answer Correct ? | 12 Yes | 9 No |
Answer / anuj
Yes we can step-down the voltage directly from 33kV to 430V
but it is not feasible since transformers turns will
increase which will ultimatly increases the cost and
secondly laod centres are far more distance than the S/S
which will increase the LT line and eventually the losses
are more in LT line than the HT line.Therefore from S/S to
the load centres, HT lines are running and near the load
centre distribution transformer is installed.By this way we
can reduce the LT line and ultimatly the losses
| Is This Answer Correct ? | 5 Yes | 2 No |
Answer / ramesh
Generally we can step up high voltage to low
or low voltage to high voltage for a possible range.
which is balance for our economical stage
but technically it is possible the turn ratio of the
transformer would be large and it will increase the size as
well also differs cost of the transformer.
so that generation for 11 kv increases up-to level ll 750kv
11kv-33kv-66kv--132kv---400kv--750kv
step down as 11kv-440V- 230V-110V
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / bk
Technically it is possible to step down voltage level to
430V directly from any upper voltage level. However, our
power system network is connected to local power plant (may
be a CPP) that generates power at 11KV level. therefore it
is requred bring the network power voltage level to 11KV
for distribution purpose.
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / vrs rathore
Yes we can, but if our exixting system is workable for only
11kv and required capacity is more then 4000kva then we
have to take 33kv connection and after that it has to step
down 11kv for supplying our esisting system, which is
working only for 11kv/430v.
| Is This Answer Correct ? | 3 Yes | 2 No |
What information we need to prepare relay coordination chart
what is FS cable?? Difference between FS and FRLS??
why neutral and earth should not be connected on 3 phase 440v/50c/s supply at consumer side. where as on 25kv/ac/50c/s railway traction substation neutral and earth will be connected and track at substation. and track will act as neutral and earth. Reasons for this is needed urgently
why do we need a 4th wire in 3phase 3wire transmission line
As we know induction squirrel cage motor torque Directly praprortinal to applied voltage in star connection & delta also. If I connect 55KW Motor to DOL starter in load condition does motor withstand the load & what will be the current withdrawn ? motor will not fail ?
how much air gap in induction motor as per the Indian standards?
For my plant the electricity department charging some amount for t/f losses. May i know what are transformer losses
what is meant by ceiling voltage, ceiling current?? pl reply asap
what is the difference between inverter and ups & what is the earth resistance for ups , if its high why so
Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?
Why High voltage are generate noise ?
what is the difference between 11kv and 13.8 kv? why we can't used one of these 2 sources?
-
Civil Engineering (5086) - Mechanical Engineering (4453)
- Electrical Engineering (16638)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
