how do you manually calculate the fault level at a substation for big multi source network for the purpose of specifying CTs, CVTs, Transformers, Circuit Breakers, earthing transformers.
We are installing curent transnformers type SBD 88 manufactured by Balteau in 1983 (S/No. 4616/1/1 for one of them). These units were procured from Lesotho Electricity board. This design compared to the SBD 82/2 has a pressure gauge at the bottom. Now, on two units these gauges are reading Zero...
