ATMN 215 – Mechatronics IICircuit Faults
• Common Circuit Faults–Fault Definition–Open Circuit– Overcurrent• Overload•Short Circuit• Electrical Arc•Short Circuit Fault–Fault Current–Bolted vs. Arcing–Three Phase–Line to Line–Line to Ground
Common Circuit FaultsFault Definition• Equipment failure attributable to some defect in a circuit •Any abnormal situation in an electrical system in which the electrical current may or may not flow through the intended parts
Common Circuit FaultsOpen Circuit•A break in an electrical circuit that prevents normal current flow •A circuit that has been interrupted, typically due to wire breaks or wires detached from devices • Can be:– Intentional: Open switch– Unintentional: Loose contact or open wire•No current flows in the circuit
Common Circuit FaultsOvercurrent•In electricity supply, overcurrent or excess current is a situation where a larger than intended electrical current
