Transcription of Introduction to Short Circuit Analysis - PDHonline.com
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Introduction to Short Circuit Analysis - PDHonline.com
PDH Course E204 Page 1 of 40 Introduction to Short Circuit Analysis Course Content A Short Circuit is a low-resistance connection established by accident or intention between two points in an electric Circuit . This excessive electric current potentially causes Circuit damage, overheating, magnetic stress, arcing, fire or explosion. The amount of current that is available in a Short Circuit is determined by the capacity of the system voltage sources and the impedances of the system, including the fault. In Circuit Analysis , the term Short Circuit is used by analogy to designate a zero-impedance connection between two nodes. This forces the two nodes to be at the same voltage. In an ideal Short Circuit , this means there is no resistance and no voltage drop across the Short . The electrical opposite of a Short Circuit is an open Circuit , which is infinite resistance between two nodes. What causes a Short Circuit ? Several scenarios can lead to a Short Circuit ; #1: When two bare conductors touch, a Short Circuit occurs.
Bolted Fault: A bolted fault is a ... A short circuit always involves the flow of uncontrolled current that isn't restrained by the normal load resistance. When a short circuit occurs, resistance of a circuit or the resistance of a part of a circuit drops in ... corresponds to the tree trunk, and the primary feeder circuits and branch circuits ...
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