Engineer1916
Electrical
Eng Tip Family,
I know I have asked a similar question before. But I still have some concerns, I am sizing the bay jumpers and I have questions about the behavior of jumpers under fault conditions.
I calculated the jumper size based on steady state current and limited the temp to 160 deg F. But for the same conductor the temp rise under fault condition for 3 cycles is 1400 deg F. Which is more than the melting point of aluminum. So my question is, what is the industry standard? Do you normally look at the temp rise under fault condition for bay jumpers while sizing them?
I know I have asked a similar question before. But I still have some concerns, I am sizing the bay jumpers and I have questions about the behavior of jumpers under fault conditions.
I calculated the jumper size based on steady state current and limited the temp to 160 deg F. But for the same conductor the temp rise under fault condition for 3 cycles is 1400 deg F. Which is more than the melting point of aluminum. So my question is, what is the industry standard? Do you normally look at the temp rise under fault condition for bay jumpers while sizing them?