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.
1855Post New Premier Interview Questions
Explain about measure() method? When this measure() method is called?
How do you start a database?
How can I do serial ("comm") port I/O?
What are ways to inject dependency in spring?
Does python require coding?
i am currently working in mainframes in cobol(old version without OOPS concepts. I wish to be more specialised in specific product or language or tool in mainframes, so willing to take up training and learn one.what is the most widely asked tool or specific package in mainframes that has a great demand in market as of now?
Explain Catch Command in ABAP?
What are major differences between Java-Based and Scala-Based Maven Project’s structure?
Explain virtual desktop.
What is the Automation Anywhere TaskBot file extension?
Explain amp in teradata?
Explain the new trends and improvements in erp.
What is machine learning artificial intelligence?
What is the current root password of mysql?
How does free() know explain how much memory to release?