I work with several "old school" power engineers, all are very good utility engineers. Many use 1HP=1KVA for calculating ampacity. For instance; a 4160V plant bus has 6650HP worth of motors, they assume 6650Hp=6650KVA for estimating current. This omits motor eff, and power factor. Any...
Does anyone know if bollards in a eletric utility substation must be grounded. The Bollards are 4 inch diameter steel pipes filled with concrete, which are used as a protective barriers for equipment. There is an extensive ground grid in the sub to which the bollards are not currently...
Thanks for the info. And no, its not a homework problem. I assume I would use the LV value? hence that would provide the total available fault current? I'm a T-line engineer trying to assist some overworked substation co-workers!