Hi,
I'd like a sanity check on my calculations for a zig zag transformer. I followed IEEE Std C62.92.4
System Voltage - 44 kV
Using 100 MVA base
Base Ohms = (44000)^2/100000000 = 19.36 Ohms
Base Amps = 100000000/(44000)*(1.732) = 1313 Amps
Three Phase Fault Duty = 6.4 kA
Three Phase Fault MVA...
Hi,
I have a project requiring a 44 kV transformer rated at 250 kV BIL primary. The vendor is stating that expulsion and current limiting fuses cannot be supplied at 250 kV BIL. Do I forego these components in the transformer or have them supplied with a 200 kV BIL rating?
Thanks in advance.
Just getting into using AmpCalc and trying to model cables that are not within the default libraries provided with the program. How do you all go about inputting your own cable library typically? The manufacturer data sheets does not have half the data that is required in the program.
Does...
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Thanks
Hi,
I am doing a grounding study for a wind farm. The turbine areas have high resistivity layers (granite) and it is hard to obtain low step and touch potentials and GPR.
The system is as follows:
YY autotransformer with a buried delta
several mile long overhead collector line of ACSR with 5...
So I have been working as a field engineer for the past four years. I have the opportunity now to complete my P. Eng and have been toying with the idea of leaving the company or switching to another department. I have been offered a job in another department as a construction project coordinator...
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