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#216141 10/16/15 02:50 AM
Joined: Oct 2015
Posts: 1
J
JUJU Offline OP
New Member
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?

Joined: May 2005
Posts: 984
Likes: 1
G
Member
D.F. is probably the Demand Factor.
What percentage of the transformer rating is being used.


Ghost307
Joined: Jan 2016
Posts: 2
H
New Member
DF= Demand Factor...a ratio portion of the total demand load of a system (or system part) expressed as a percentage calculated for usage allowed. [Art.220]

Joined: Jan 2016
Posts: 2
H
New Member
Note that including the overall Demand Load depends on using a standard or optional method load calculation as permitted in Art.220 for determining the transformer rated capacity size needed.


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