Calculate, Using A 40 MVA Base, The Fault Level For A
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Last Updated:
26-Aug-23
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Question 1. FIGURE 1 shows four generators feeding into a sectionalised busbar with a fault limiting reactor.
Each generator is rated at 11 kV and 30 MVA and has a reactance of 0.2 p.u.
Calculate the value of the reactance to limit the fault level on a feeder to 500 MVA.
Question 2. FIGURE 2 shows the sectionalised busbar of a two generator power station connected to the national grid.
Calculate, using a 40 MVA base, the fault level for a 3-phase symmetrical short circuit on the 11 kV feeder.
