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It is a double wye

For a 13.8kV ungrounded wye capacitor bank with one main breaker with phase Instantaneous Overcurrent and Time Overcurrent relays and 59N on a neutral VT. How would you calculate the relay pick ups, also for the ground relays neutral to ground alarm and trip settings?? and how would you...

So should this also be sheilded it looks like it should be from documentation. Does anyone know where or a link to where I can find a really good resource with recommendations on what to use for RS485 cable? what guidlines for the communication what is the communication? Thanks

Can someone please tell me how I can calculate the characteristic impedance and the shunt capacitance of a cable, and what variables are required to do so or is there a website with formulas? An exampel of what I am lookign for is I need a cable with 16 pF shunt capacitance and 120 Ohm...

I just need a cable that is suitable for rs 485 communication, I am surprised that so many utilities are not using this communication and outside

I'm not sure these have the the low capacitance you need for this does it?

Because any conduit in the ground fills with water which is what I am trying to avoid is moisture.

Can anyone please tell me what communication cable anyone one reccomends or uses for RS 485 communication outside in conduit? I use to use Belden 9742 but that is not reccomended for outside use the jacket is made out of PVC. Any help would be appreciated. Thanks

Can anyone please tell me what cable you use for any RS485 communication cable for outside use in a substation? I use to use Belden 9742 but it is not rated for moisture outside etc. Any help would be appreciated. Thanks