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.
1462Post New Premier Electrical Engineering Interview Questions
- Premier SAP Basis Interview Questions (1) Premier Electrical Engineering Interview Questions (2)
What is a trigger? Why we need it?
when to start the automation?
Integration between personnel administration & time management?
How to set default controller on yii project ?
What does it mean to restore default settings?
When is a functional dependency F said to be minimal?
What are heavy weight components ?
what are the steps you will take, if you are tasked with securing an sql server? : Sql server database administration
mention which resource can enhance ears support apart from shared libraries and data sources?
Describe about the spectrum of activity, side effects, and uses of the antibiotic chloramphenicol?
what is different between oops and c++
What is dbms introduction?
Explain how selenium grid works?
What molecule is characteristically prevalent in sour milk and tired muscles?
what are the installation procedure of high voltage power transformer,CT,CB&PT?
