HI - We have a customer with 10, 1 MVA transformers connected to our utility system at 13.8 kV three phase. Our current practice for fuse sizing is to assume that the inrush current would be the same as for 1 - 10 MVA transformer. Does anyone know if the total inrush for multiple transformers...
Hi,
We've found a relatively new cable installation where 2 underground feeders have been installed to service an industrial park. The cable is 750MCM Cu, 28kV concentric neutral, 3 conductors per circuit. The system voltage is 27.6kV. A separate 350 MCM Cu neutral has been installed and...
Hi,
We had an incident where a lineman was installing a new line across a road. There are two parallel circuits with one disconnected and grounded at one end. There was a high voltage measured at the other end of the disconnected line.
Does anyone know where I might find information on how...
We have a 1200' run of 13.8 kV underground cable feeding a 3 phase padmounted 500 kVA Yg-Yg transformer from 3 single phase fuses. I have found some new information on ferroresonance that suggests that there still may be ferroresonace occuring in the YY transformer because of the newer low loss...
