This is better. Here's what I have so far.
... We do have a 3-phase system, and we are using 3 of these single-phase capacitors to achieve the 3-ph application.
The only spec I have for this capacitor is as below:
Double Bushing
2400V rating
75BIL KV rating
100KVAR
We have a 2400V delta ungrounded system.
The installation is 300kvars delta connected across a 2400V ungrounded delta syste.
This gives a capacitive curent of 72A.
As for 2008 (2011) NEC, Art 460.8A requiring conductor ampacity 135% FLA - it does not apply. There is no matching article in Part II, Over 600V.
Now let's look at OCP. The governing NEC article is 460.25. And this refers to IEEE 18-1992.
As others have noted: The NEC isn't a design guide. And this is a perfect example. I think the NEC is pretty clear - it acknowledges this is not a cookie cutter design. For Cap Bank installations above 600V, you have an engineering problem.
So, to answer your original question:
IEEE 18 is now at -2002 (and I don't have a copy of -1992)
Other standards are IEEE 1036 Guide for Applictions of Shunt Power Capacitors, IEEE Std C37.99-2000 (capacitor bank protection) and IEEE Std C37.48-2005 (external capacitor fuses)
And there is another reference to a C37.xx on fuse characteristics (that i don't recall but is likely referenced in the others).
Aren't you glad you picked an easy one? :happysad:
ice