davidbeach,
That is an excellent point, I would have to say that there would be no way to transition away from the VFD that I could see that would prevent what we are trying to solve in the first place. Essentially they want a VFS (variable frequency starter) but that doesn't really exist...
Hello,
Here is the situation, I am having a debate and am trying to determine if it is possible to use a smaller rated VFD then one that would typically be installed for a given load to be used solely as a soft-start for a large compressor.
The utility requires a small inrush current that...
Turns out the line is to be Linnet ACSR, in a typical T pole construction with 88" spacing between the furthest conductor and the middle one in the center @ approx 5" height.
After looking up the specs on the conductor here...
It will be a 3 phase, but no knowledge yet on PF.
Thanks for the input dpc. I will give those books a look over.
I guess I was looking for a rule of thumb or a basline to use for approximate voltage drop over given lengths. Stictly for observation purposes.
davidbeach
Normally I think you would need to know the code name for the conductor and for a 336 kcmil I beleive there are a couple choices :
Merlin
Oriole
Linnet
...
Ok so stay with me here,
if we select Merlin, we know
R(AC@75C) = 0.0625 ohm/1000ft
519 allowable amps
then I would think...
Hello,
I am trying to figure out a rough calculation of the voltage drop of a 25kv, 336 kcmil ACSR conductor over given lengths (40km or more) from 2 8MW feeders.
It has been a while since I have touched this stuff and can't remember the equations I should consider for a rough estimate or any...
