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2. Electrical fault - Wikipedia

   en.wikipedia.org/wiki/Electrical_fault

   In an electric power system, a fault or fault current is any abnormal electric current. For example, a short circuit is a fault in which a live wire touches a neutral or ground wire. An open-circuit fault occurs if a circuit is interrupted by a failure of a current-carrying wire (phase or neutral) or a blown fuse or circuit breaker.

3. Residual-current device - Wikipedia

   en.wikipedia.org/wiki/Residual-current_device

   A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.

4. Ground continuity monitor - Wikipedia

   en.wikipedia.org/wiki/Ground_continuity_monitor

   A GCM or ground continuity monitor (also called a ground integrity monitor or ground continuity tester) is an electrical safety device that monitors the impedance to ground of a temporary electrical circuit and can provide indication (or protective trip) in the event impedance rises to an unsafe value. A GCM is either an external testing device ...

5. Ground (electricity) - Wikipedia

   en.wikipedia.org/wiki/Ground_(electricity)

   If a second ground fault occurs, a ground fault protection relay must trip the breaker to protect the circuit. On an HRG system, a sensing resistor is used to continuously monitor system continuity. If an open-circuit is detected (e.g., due to a broken weld on the NGR), the monitoring device will sense voltage through the sensing resistor and ...

6. Fault detection and isolation - Wikipedia

   en.wikipedia.org/wiki/Fault_detection_and_isolation

   Fault detection, isolation, and recovery (FDIR) is a subfield of control engineering which concerns itself with monitoring a system, identifying when a fault has occurred, and pinpointing the type of fault and its location. Two approaches can be distinguished: A direct pattern recognition of sensor readings that indicate a fault and an analysis ...

7. Iddq testing - Wikipedia

   en.wikipedia.org/wiki/Iddq_testing

   This makes it difficult to tell a low leakage part with a defect from a naturally high leakage part. Also, increasing circuit size means a single fault will have a lower percentage effect, making it harder for the test to detect. However, Iddq is so useful that designers are taking steps to keep it working.

8. Electrical isolation test - Wikipedia

   en.wikipedia.org/wiki/Electrical_isolation_test

   The test often reveals problems that occurred during assembly, such as defective components, improper component placement, and insulator defects that may cause inadvertent shorting or grounding to chassis, in turn, compromising electrical circuit quality and product safety. [2]

9. Ground loop (electricity) - Wikipedia

   en.wikipedia.org/wiki/Ground_loop_(electricity)

   Circuit 1 (left) and circuit 2 (right) share a common path to ground of resistance . Ideally, this ground conductor would have no resistance ( R G = 0 {\displaystyle \scriptstyle R_{G}=0} ), yielding no voltage drop across it ( V G = 0 {\displaystyle \scriptstyle V_{G}=0} ), keeping the connection point between the circuits at a constant ground ...