Battery Energy Storage Systems Capability Guide - English
Learn how battery energy storage systems (BESSs) make large renewable energy projects more practical and how Littelfuse products help BESSs work.
Link has been copied to clipboardArc Flash Detection
Littelfuse arc-flash relays provide superior protection against the damaging effects of arc flashes. These market-leading, arc-flash relays deliver reliable, easy-to-install protection with plug-and-play functionality, making them as easy to retrofit into existing switchgear as installing them into new equipment. Arc-flash relays are an integral part of an arc-flash protection system that can minimize damage, and save money, time, and lives. The Littelfuse arc-flash relays improve sustainability and the life of electrical equipment.
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Arc Flash Detection Information Center
Arc-flash events are dangerous and potentially fatal to personnel. Arcing and arc-flashes occur when electricity flows across what is normally an insulating medium, producing intense, luminous discharges of electrical energy. Arc-flash detection technology allows circuit-protection devices to operate rapidly to reduce the energy of an arc flash, where most current-detection devices would respond slowly or potentially not at all.
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Frequently Asked Questions
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Is nuisance tripping a problem?
Normal in-house lighting will not cause the arc-flash relays to trip. Flashlights, direct sunlight or strong, focused light at short distances may produce enough light to cause tripping. If there are concerns about that, the best way to avoid nuisance tripping is by using the optical sensors in conjunction with current supervision. This function is available with
Does thermal imaging trip the Littelfuse Arc-Flash Relays?
Assuming the thermal imaging device is passively detecting heat in the switchgear by using the infrared light emitted, there will be no interference with the arc-flash relay or sensors.
Would a camera-flash trigger the Littelfuse Arc-Flash Relays?
When the PGR-8800, AF0500 or AF0100 is set to maximum sensitivity and the amount of time light is required to be present on the sensor is set to a minimum, it is possible that a small point-and-shoot camera close to the sensor could be sufficient to trip the relay. Typically, a compact camera’s flash does not present enough intensity to cause a trip, except at VERY