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A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...
In practice RCD nuisance trips are much more common. Another cause of nuisance tripping is due to accumulated or burden currents caused by items with lowered insulation resistance. This may occur due to older equipment, or equipment with heating elements, or even wiring in buildings in the tropics where prolonged damp and rain conditions can ...
to test series and interpoles (commutating) fields from a DC motor; to determine phasing and polarity in multiwinding armatures; to test rotors in rotating frequency changers, as well as in wound rotors; to test shorts between turns in taped coils before installation into an armature or a stator; as a low voltage isolation transformer
Squish is a commercial cross-platform GUI and regression testing tool that can test applications based on a variety of graphical user interface (GUI) technologies (see list below). Squish was initially developed by Froglogic in 2003. On April 13, 2021, the Qt Group acquired froglogic GmbH. Since then, Squish and the other froglogic products ...
The following post was written and/or published as a collaboration between Benzinga’s in-house sponsored content team and a financial partner of Benzinga. A massive and continually growing ...
RRDtool (round-robin database tool) aims to handle time series data such as network bandwidth, temperatures or CPU load. The data is stored in a circular buffer based database, thus the system storage footprint remains constant over time. It also includes tools to extract round-robin data in a graphical format, for which it was originally intended.
Entry-level cable testers are essentially continuity testers. A continuity tester is an item of electrical test equipment used to determine if an electrical path can be established between two points; [1] that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the apparatus. [1]
US stocks mostly rose on Thursday as investors look at earnings. Amazon issues weak sales outlook after the close. Monthly jobs data due Friday.