arc flash relay
arc flash relay
(OP)
Here you tell us what is arc flash relay...İ think most of us dunno what it is...
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RE: arc flash relay
One solution to this problem is to install an optical detection relaying system that detects the intense light given off by the arc-flash and instantaneously trips the main circuit breaker. This type of detection system is available through at least one manufacturer and consists of a light-detecting relay that is connected by a fiber optic cable to the light sensor(s).
In order to prevent false trips due to flash bulbs, arcs from circuit breakers performing switching, strong sunlight, etc., phase and ground peak over current detectors are used to supervise the optical sensors. Solid-state tripping outputs provide a typical arc flash sensing time less than 2.5 milliseconds. Total clearing time is reduced to the breaker operating time plus 2.5 milliseconds. This speed advantage over more conventional protective schemes can significantly reduce the hazard risk category, allowing maintenance personnel to wear a more manageable level of PPE
RE: arc flash relay
RE: arc flash relay