Interested to Buy Any Domain ? << Click Here >> for more details...
How to calculate earth flat size for 250 Kva DG and
transformer?
- 8 Answers
- 36343 Views
- Deepak Fertilisers, I also Faced
- E-Mail Answers
Answer Posted / samson
Neutral will come in to picture whenever u start ur DG (
and not paralleing with a Grid as it will create a
circulating current), so worst thing that can happen is L.G
fault on a phase of generator or inside the winding , so
max current that can go is dg rating/ phase volatge ( use
formula above) so ur neutral should be capable of that
much curent ,( neglecting any contact resistance in ideal
case)
the switching of neutral is done through contactor.
use this to size strip
the I = K* A/ sqrt of time ( some of IS standered give u k
for bare conductor) Dg manufacturer will size support for
S.C forces
get k for alumi. or copper u can size to next standered
sizes available 20 x 6, 40 x5 n all
| Is This Answer Correct ? | 4 Yes | 5 No |
Post New Answer View All Answers
how much excitation voltage required to generate 1mw power?
what is cathodic protaction?
What Maximam Gap Taibaar & Bush
what is meant by tranformer impedance?
What is the purpose of using busbar mounting fuse?
What is difference and reason b/w -48V BTS system and 24 V BTS system. Plzzzzzzzzz tel me.
Why Water motor is not taking a load or pressure while everything is correct. (Note: Motor running properly)
i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.
how we sesign the transformer give some specifion regarding design of transformers
How to calculate energy stored in a capacitance
Should power factor be low or high?
Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............
List the advantages of star-delta starter with induction motor?
advantages & disadvantages of Lagging and leading power factor .
Give accurate definitions for these electric terms: Inductor Inductance Inductive Induction Reactance Reactive Esam Baraka ٢١ ساعة
