D.F load of Equipments - 10/16/15 07:50 AM

I have seen an excel sheet in calculator to calculate the size of transformer.

There are option to put the vales of Kw,PF,Qty and Equipment D.F.

I could not understand what is D.F.

What is the equation to calculate the D.F and equation to calculate the total load D.F?

There are option to put the vales of Kw,PF,Qty and Equipment D.F.

I could not understand what is D.F.

What is the equation to calculate the D.F and equation to calculate the total load D.F?