If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB?
Explain in detail.
Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.
-What should be minimum value of insulation resistance
and maximum value of earth resistance at any electrical
instillation and what is method of testing the same.
WHAT IS THE PARTIAL DISCHARGE TEST?
how we can do the insulation on secondary of ct explain and
so that tan delta will within limit
please send me the L&T Emb. sys. placement papers and
entire details of pattren
I am selected in OCL(Orissa cement Limited), but they have a Tech PI round their at their plant.Anybody has any idea that what kind of questions they are going to ask??Please guies help me. I am in serious headache.I have heard that huge elimination is done at there.
Can anyone explain me the operating principle of the megger
tester?( I just know that its diflection relates with the
ratio of currents of control & diflecting coil. I need more
information as breif as possible)
HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?
I want to put this query to SENIOR & EXPERIENCED ELECTRICAL
1)I want to know about the control circuit diagrams for
control panels. I found it difficult to understand. Is
there ant booklet through which we can learn the circuit
2)I want to learn about conduiting, laying cables,
preparing cable schedules and various techniques which is
the part of building infrastucture(construction field). I
don't have any experience in this area. I have experience
in control panels only. that's why i am not getting any
opening in building infrastucture (construction field).Can
I get the job in this field as Trainee Engineer? How to
enter this field? I need job in PUNE
How we calculate DC inducation moter Amp?
Sir pls give me formula......
How to get Electrical Supervisory Licence in chennai Tamil
Nadu from TNEB. I am BE EEE graduate.
In case of generator when we consume more power produces by
it why load on generator increase and starts sound more.
and how it is adjusted..
Difference between drift current and diffusion current?
what clearance required for 4.5 mva dry type transformer?
WHAT IS SPEC OF CLEANROOM MOTOR AND LIGHT FITTINGS?
What is the method of estamating of cable, CB,MCB ?