We have a substation DC loads supplied via a 250 VDC system. The charger float voltage is actually 270-280 VDC. The question that came up was that all the standard breakers are rated for 250 VDC, and none of the application engineers from Schneider, Eaton, ABB etc. are willing to state that the...
Hi,
I have a seemingly simple question, yet its causing some debate in our team. Our client uses equipment's rated currents to determine Substation line bay min. ampacities (breaker, CT, disconnects etc.). In one case, there is a CT with a min. connected ratio of 800:5 which limits the line bay...
Hi Everyone,
I have a Generator Step Up (GSU) Transformer with the HV side at 240kV. The high side terminations are via 'plug-in' bushings that only allow for termination of a 240kV power cable.
My concern is with placement of a surge arrester for Transformer protection. In a standard air...
