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D.F load of Equipments #216141
10/16/15 03:50 AM
10/16/15 03:50 AM
J
JUJU  Offline OP
New Member
Joined: Oct 2015
Posts: 1
India
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?

Tools for Electricians:
Re: D.F load of Equipments [Re: JUJU] #216142
10/16/15 01:22 PM
10/16/15 01:22 PM
G
ghost307  Offline
Member
Joined: May 2005
Posts: 943
Chicago Illinois USA
D.F. is probably the Demand Factor.
What percentage of the transformer rating is being used.


Ghost307
Re: D.F load of Equipments [Re: JUJU] #216658
01/15/16 07:44 PM
01/15/16 07:44 PM
H
Highrise  Offline
New Member
Joined: Jan 2016
Posts: 2
WA-CA, USA
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]

Re: D.F load of Equipments [Re: Highrise] #216660
01/15/16 10:25 PM
01/15/16 10:25 PM
H
Highrise  Offline
New Member
Joined: Jan 2016
Posts: 2
WA-CA, USA
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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