Current is the rate of flow of charge and volatge is the measure of energy carried by the charge .
voltage is said to be at ZERO potential during a short circuit but what i cant comprehend is how current exist without voltage being present? doesnt the current need voltage to carry it along the cable towards the fault location?
now imagine a Generator(source) supplying distribution transformer 11/0.433kV supplying a switchboard. lets say a 3 phase fault happened within the switchboard and the main circuit breaker of the switchboard failed to trip and upstream protection protecting the 11kV line failed to trip as well. just imagine all protections have failed to act.
Now at this point of time what will be the voltage on the primary and secondary side of the distribution transformer and the volatge at the (source) generator.
please help me to understand better. thank you
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