Hi gentleman,
I have done it many times but need a bit of scientific explanation to the approach I have taken.
I have a feeder entering a 2 MVA 13.8 kV transformer stepping it down to 4.16 kV Secondary which is resistance grounded with ground fault limited to 10 A NGR.
I need to have a...
Hi All,
I have two completely unrelated questions and would appreciate your input. Ist topic is D20RTU and Second topic is AEG Vacuum type 38 kV outside metal class enclosed moisture isssue.
Q#1 A) What would be the purpose of a test relay in old
Datrac GE RTU ?
B) My setup has...
Hi,
I am sure you have seen it and done it all. I am not used to electromechanical relays and had my first encounter with them recently. I have a GE PJC32 relay
http://www.gedigitalenergy.com/app/ViewFiles.aspx?prod=pjc&type=3
It is a instantenous relay with a curve charc. Customer has a...
Hi...
Thanks for your earlier valuable suggestions. A new entry into my work is to estimate cost involved in retrofiting medium voltage 13.8 kV oil breakers with vacuum breakers. Could you kindly advise me where I can find construction cost estimates for utility environment.
Thanks
Hi Jghrist,
In one of the last posts, you had commented
"Keep in mind that if you have R-Y-B East to West for a DYn1 transformer facing North and R-Y-B East to West for a DYn1 transformer facing South, you will have a 60° phase difference in the secondaries and you won't be able to get the...
Hi All,
I just started a new position at a intermediate level in a electric utility. To my surprise the environment is completely different than I expected, it is probably more
cold hearted than a consulting environment but that is besides the point now I just have to deal with it for a better...
Hi,
I am supposed to work on a substation battery charger schematic and am working on getting some basic conceptual info.
In this system, when station service transformer supply is avilable, the recifier will supply the DC panel but as soon as the AC supply will be off, the batteries will...
