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.
1417How 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.....
1535what is conductor constant of raccun conductor
CSPDCL-Chhattisgarh State Power Distribution Company Limited,
1744Please 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)
1654What is the difference Marshaling box and RTCC (Relay tap changer circuit) Panel of transformer ?
1 5033Do you know what is dry-out test in x'mer
First American Corporation, GPSC Gujarat Public Service Commission, Jindal,
2194Post New Electrical Engineering Questions
What is error of a measurement?
what is a synchronizing lamp ?
why high speed tripping relay is used in protection circuit why not normal relay
c++ write a program to use a fuction call "max"which accepts an intger arrey of size5.as an arrument and return the larger and smallest of the arrey to main without changing. the original changing of the original position of the element of the arrey.
Dear all, how we select the cable size according to current with or without including different correction factor , is there any direct method for sizing of cable...
How Can You Relate Power Engineering With Electrical Engineering?
please explain how to do 'pole drop test' on generator?
What is boucholz relay and the significance of it in to the trformer?
What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB
in dc series motor if field wdg is shorted then
Mention the disadvantages of low power factor? How can it be improved?
What is the actual meaning of thermal power efficiency ?
wow to calculate the transformer rating(KVA)
how to find the Motor,s insulation Power?
why impudance relay used for medium transmission power system? why not others?