References/rules of thumb for generator stator capacitive charging current

[rme291]

Can anyone point me to a reference that gives values/equations/rules of thumb for either the capacitive charging current or the capacitance value for a generator stator?

I am sizing a high-resistance ground resistor for a project, and I need to verify that the resistor current is greater than the system charging current, and I cannot find any references to give me these values.

Initially, we used a rule of thumb of 0.15A/1000HP, a value given in the Post Glover HRG Application Guide, but this value is for motors, not generators.

For reference, the generator information I have is:

• 7372.5 HP (not sure where this value came from...)
• 12,470V line-line, 7,200V line-neutral
• Generator X/R: 29.8
  

 

[synchro]

I found the reference below, but I'm sure there are others.

Request Rejected

This link has previews of figures and tables from the paper that give you some idea about the content of the article:

Charging Current Data for Guesswork-Free Design of High-Resistance Grounded Systems | Semantic Scholar

The design of high-resistance grounded power systems requires the sizing of the grounding resistor to provide a current flow equal to or greater than three times the system charging current (Ico) of each phase. In industrial power systems the insulated power cables are a major source of system...

www.semanticscholar.org

 

[rme291]

That's what I needed, thanks @synchro