Electric fireproof current-limiting type protector

Abstract

The invention relates to an electric fireproof current-limiting type protector which fast completes short circuit current limitation by using a high-power insulated gate MOSFET (Metal-Oxide -Semiconductor Field Effect Transistor) and has a working principle that partial energy of load currents or fault currents is used as the supplying electricity of an internal control circuit through the transformation of a current transformer so that a product can achieve excellent low-voltage characteristics and microsecond-grade fast short circuit current limitation capability under the conditions of no any auxiliary power supply. Aiming at electric fireproofing, the invention can complete the limitation of short circuit fault currents at a microsecond grade so that short circuit currents are only increased to several times of the normal load currents without generating electric arcs near short circuit points, thereby greatly reducing the occurrence probability of fire hazards and reducing the occurrence probability of short circuit electric fire hazards by 30-50 percent; in addition, the invention plays a good prevention role on the short circuit electric fire hazards, thereby reducing the economic loss caused by the fire hazards.

Description

technical field [0001] This APEpro lossless digital audio hard decoding chip involves audio processing, genuine protection, mobile phones, portable digital players and other technical fields. Background technique [0002] The electrical fire-proof current-limiting protector studies the occurrence mechanism of electrical fires (especially those caused by electrical short circuits), analyzes the shortcomings of current electrical fire monitoring equipment, and implements technological innovations to prevent electrical short circuits. By optimizing the combination, research and development of electrical fire monitoring equipment with more pertinence, higher efficiency and more stable quality can make up for the shortcomings of traditional electrical fire monitoring equipment such as long short-circuit current limiting protection time and large impact after short-circuit, and improve monitoring Electrical Fire Efficiency. [0003] The electrical fire-proof current-limiting prot...

AI Technical Summary

Problems solved by technology

[0002] The electrical fire-proof current-limiting protector studies the occurrence mechanism of electrical fires (especially those caused by electrical short circuits), analyzes the shortcomings of current electrical fire monitoring equipment, and implements technological innovations to prevent electrical short circuits. By optimizing the combination, research and development of electrical fire monitoring equipment with more pertinence, higher efficiency and more stable quality can make up for the shortcomings of traditional electrical fire monitoring equipment such as long short-circuit current limiting protection time and large impact after short-circuit, and improve monitoring Electrical Fire Efficiency

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