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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.
1880How 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.....
2025what is conductor constant of raccun conductor
CSPDCL-Chhattisgarh State Power Distribution Company Limited,
2236Please 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)
2105What is the difference Marshaling box and RTCC (Relay tap changer circuit) Panel of transformer ?
1 6105Do you know what is dry-out test in x'mer
First American Corporation, GPSC Gujarat Public Service Commission, Jindal,
2651Post New Electrical Engineering Questions
What is transient Phenomenon?
it is possible to rotate the DG engine dc starter with wrong polarity connections? why?
1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?
any application of back emf
What current position are you holding in your current company?
ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine
how braking & making capacity of circuit breaker is calculated?
how to put cable sizing and cable glands size for respective cable & Cable Lug size in a DB sectors???
why servomotor motor? where i apply for best output?
which stabilizer is better ? AVR, Servo Stabilizer, Static stabilizer etc & why explain it
'documenˁ
What are the two segments of nyquist contour.
what is draiv work
How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?
can we use NPT glands in LT panel
