Arc Flash Calculation at voltages over 15 kV
Arc Flash Calculation at voltages over 15 kV
(OP)
Hello everybody,
I know that IEEE Std 1584 is valid only in voltages up to 15 kV and for voltages above it, Lee equations are applicable.
Does anyboy have an example or reference that shows in detail the way to calculate the incident energy, distances and so on?
We have followed the Lee equations and the results are not believable in all cases, despite having very fast trip times and fault currents in the range of 5 kA at 34.5 kV, incident energy is over 100 cal/cm2.
I thank you in advance for your help!
I know that IEEE Std 1584 is valid only in voltages up to 15 kV and for voltages above it, Lee equations are applicable.
Does anyboy have an example or reference that shows in detail the way to calculate the incident energy, distances and so on?
We have followed the Lee equations and the results are not believable in all cases, despite having very fast trip times and fault currents in the range of 5 kA at 34.5 kV, incident energy is over 100 cal/cm2.
I thank you in advance for your help!






RE: Arc Flash Calculation at voltages over 15 kV
Suggest ArcPro.
RE: Arc Flash Calculation at voltages over 15 kV
I thank your comment.
One final point:
And the results are believable? despite being 100 cal/cm2?
What do people typically do?
Because, you would need a very extreme clothes, distances of more than 100 meters and so on.
Best Regards
RE: Arc Flash Calculation at voltages over 15 kV
RE: Arc Flash Calculation at voltages over 15 kV
RE: Arc Flash Calculation at voltages over 15 kV