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.
1931Post New Premier Interview Questions
can anyone tell me few critical bugs in ecommerce project.
Does Amazon redshift based on concept cluster?
How do you create a subfolder?
What interface is extended by awt event listeners?
You are getting busy buffer waits. Is this bad? How can you find what is causing it?
What are value tables?
How is the memory used within an object in delphi?
What is the different method to control the robot?
tell me some type of questions throught which i can prepare for exam and do my best
What is the partitioning method?
How will net of things (IoT) impact the sustainability of environment or business?
What is syswow64 rundll32 exe?
What are sql constraints?
How to increment dates by 1 in oracle?
Describe and interpret qualitatively the evidence provided by electron diffraction for the wave nature of particles. : quantum physics