When a short circuit occurs, the system's current rises to an abnormally high level, while the voltage falls to a low level.
Due to the high current generated by the short-circuit, excessive heating occurs, which might end in fire or explosion. Short-circuits can sometimes take the shape of an arc, causing significant damage to the system. The low voltage caused by the fault has a significant negative impact on the power system's ability to provide service. The consumer's motors may be shut down and the power system's generators may become unstable if the voltage is low for even a few seconds.