oldfieldguy, thank you very much for your time and response. Is there any values I can compute, numbers I can back into using the 240.4 volts low side injection and 1.0186 amps primary observed? NERC PRC-005-1b requires I verify instrument transformer outputs and correctness of connections to...
At the moment CT's are on energized 161 KV OCB's. Can you help me with translating the secondary voltage and primary amperage? 1200:5 ratio. With values of 240.4 volts into secondary and 1.0186 amps out of primary, how do I do the math to reconstruct the amount of fault current that would...
I used a Megger CTER-91, followed procedure and produced a nice saturation curve of 1200:5 CT's. With known sceondary voltage injected and known primary amps measured, how do I proceed to interpret the results? What computations do I do and what nameplate values from tested CT's are pertinent? I...
Gentlemen-
Have contacted Woodward (gas turbine controls division bought by GE) and have
torn into my own operator's manuals. Everyone's input has been helpful.
Many thanks
GBell
In this "blackstart" scenario the city would be isolated from any normal
161KV feed and would lockout the possilbilty of having the grid return
and be out of sync with the city's 69KV. The 161 to 69 stepdown X-formers
(supplies from the outside world) would be locked out.
I am trying...
Would like a down and dirty explanation or references to basic explanation of modes
of generator operation. Particularly "blackstart" of gas turbine power plant in a
municipal power setting, the operation of 3 generators 20MW+20MW+40MW.
What do I expect to happen with no existing grid...
