Good Day,
I am working in several Indoor Substation projects double busbar array 5 bays of 66 kV under protected by a big slab, but since we are running against time here, we are considering to replace the slab by using a steel roof. Any hints regarding desing standards on this or else any other...
Recently I attended a Factory Acceptance Test of Current Transformers for Substations, the tests were accidentally started at 60 Hz, but the CTs were designed for 50 Hz, when I saw the accuracy test results, they were almost the same, what would be the consequences in terms of accuracy and life...
