Arcing

Arcing Horns - Operation
... Arcing horns form a spark gap across the insulator with a lower breakdown voltage than the air path along the insulator surface, so an overvoltage will cause the air to break down and the ... Design criteria and maintenance regimes may treat arcing horns as sacrificial equipment, cheaper and more easily replaced than the insulator, failure of which can result in complete destruction of the equipment it ... Arcing horns thus play a role in the process of correlating system protection with protective device characteristics, known as insulation coordination ...

Over-arcing
... Over-arcing is a nearly self descriptive term which denotes a radial or parabolic-like "arc" which is extended, for whatever reason, beyond the path of which it was. 4,365,785 issued to Jim Miller in December 1982, regarding rocker arm geometry over-arcing (adjective and verb) relates to the radial path which either end of a rocker arm makes ... Anything else is termed to be "over-arcing," as it inevitably requires a greater period of contact with the respective linear motion components (i.e ...

Diaphragm (contraceptive) - Types
... An arcing spring folds into an arc shape when the sides are compressed ... Unlike other spring types, arcing springs may be used by women with mild cystocele, rectocele, or retroversion ... Arcing spring diaphragms may be easier to insert correctly than other spring types ...

Arc Flash - Protecting Personnel - Reducing Hazard By Design - Arcing Time
... Arcing time can be reduced by temporarily setting upstream protective devices to lower setpoints during maintenance periods or by employing zone-select ... Arcing time can significantly be reduced by protection based on detection of arc-flash light ... The most efficient means to reduce arcing time is to use an arc eliminator that will extinguish the arc within a few milliseconds ...

Arc-fault Circuit Interrupter
... short circuits so they do not protect against arcing conditions that produce erratic, and often reduced current ... The AFCI circuitry continuously monitors the current and discriminates between normal and unwanted arcing conditions ... Once an unwanted arcing condition is detected, the AFCI opens its internal contacts, thus de-energizing the circuit and reducing the potential for a fire to occur ...