Hello,

Is Anyone out there familiar with the NENS 09 Australian AF Calculation method?

This method was published in the "ENA NENS 09-2014 National Guideline PPE Arc" Guideline that's used in Australia. (See equations in attached image)

They list the methodology and equations but I don't see a breakdown of the method limitations.



For example, in IEEE 1584 there is a disclaimer saying the applicable voltage, fault currents, etc that the method is valid for.

Based on the citings this method may have originated from the following document but I can't seem to find it anywhere online.

EESA Electrical Arcing Hazards - A paper by Dr. David Sweeting (Sweeting Consulting) and Professor Tony Stokes (Electrical Engineering University of Sydney) presented at the EESA Conference in Sydney on 12 August 2004;

If anyone can shed some light on this or point out the limitations of the method that would be appreciated!

I realize the method is older in comparison to IEEE 1584 but I'm interested to see how the assumptions of this method compare to the updated IEEE 1584 model.

I too would be interested to know the limitations / applicability, especially in relation to voltage (i.e. is there a minimum and maximum voltage range stated)?