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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
1825How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....
1985what is conductor constant of raccun conductor
CSPDCL-Chhattisgarh State Power Distribution Company Limited,
2181Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)
2064What is the difference Marshaling box and RTCC (Relay tap changer circuit) Panel of transformer ?
1 6006Do you know what is dry-out test in x'mer
First American Corporation, GPSC Gujarat Public Service Commission, Jindal,
2606Post New Electrical Engineering Questions
how we design a pannel to start 10HP motor with the help of star delta starter?
If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables
How do u analyse protection fault when vcb tripping on load
Hi I'm doing my MBA(3rd semester).I applied for the post of ET conducted by BHEL the last year.I cleared the written and lost in personal interview.Again I wrote the exam this time and cleared the written n yet to take the personal interview.Shall I disclose in the interview about my studies.What shall i say if they ask about my change from studies to job
how to select the isolation tranformer for siemens 802dsl cnotroller
Define the term Capacitance and Inductance?
how to store the thunder power?
why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?
Why two phase welding machine is used instead of three phase welding machine.
Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?
what is meant by moulded case circuit breaker ?
What are the specifications for conducting earth leakage test as per IEC standard?
how brushed dc motor operating ?
Refernce currents are to be generated using refernce cueernts how can this be done??
what is meant by flywheel and its role in retardation test
