Electrical Engineering - Re: Determining the Current on the Neutral in a 3 Phase, 4 wire system with both resistive & re

Author

Re: Determining the Current on the Neutral in a 3 Phase, 4 wire system with both resistive & re

mansour

2007-04-21, 8:25 pm

The Vector sum of the current in three phase in any given moment is equal
to
neutral current, this is independent from the connection & the type of the
neutral.
It is clear if forth wire does not exist or if you have balance three phase
load the
sum will be zero.
IA+IB+IC=In
in practice in order to calculate the neutral current you need to know the
angle
between the phases you can choose one of the phases as reference
with angle zero & the other two can be measured or expressed in respect to
"A" phase & if this is known
it will be only vector summation.

rgds
mansour

"myself" <myself@nowhere.com> wrote in message
news:YByVh.6379$Qa.3976@trndny08...
> Could anyone tell me how you would determine the current (amps) on the
neutral in a
> 3 Phase, 4 wire system, with both resistive & reactive circuits of varying
voltages (208 & 120).
> If there is a formula for figuring this out, I would appreciate the
knowledge. Thank you!

LinkBot