Method for judging fire caused by electrical short circuit through arc traces

Abstract

The invention discloses a method for judging a fire caused by electrical short circuit through arc traces. The method comprises the steps that scene investigation is carried out according to characteristics such as the working principle, the structure and the installation position of a short circuit protector, a short circuit protector matched with same circuit on the fire breakout portion is traced and looked for, and the short circuit protector is extracted; the withdrawal process of the short circuit protector is recorded, the trace characteristics of each portion of the short circuit protector are observed, it can be determined that short circuit has happened on the circuit as long as the arcing traces exist on one or more portions, and it can be determined that short circuit has not happened on the circuit if no arching trace exists on any portion. According to the method, whether electrical short circuit has caused the fire is judged by observing the trace characteristics of each portion of the short circuit protector; the method is simple, low in cost, accurate in judgment and capable of saving time, provides reliable criteria for ruling out the possibility that short circuit causes a fire, and improves judgment efficiency.

Description

technical field [0001] The invention belongs to the technical field of electrical and fire-fighting fire cause investigation, and in particular relates to a method for judging electrical short-circuit fires by using arc traces. Background technique [0002] At present, the method of breaking the electric fire is judged according to the metallographic structure characteristics of the melting marks of the conductors on the circuit. Due to the high temperature effect in the burning process of the fire field, the burning of the conductor melting marks or the serious change of the metallographic structure is often lost. The characteristics of the short circuit, the metallographic characteristics of the melting trace of the conductor cannot be judged, resulting in the inability to determine the cause of the fire. The traditional method of breaking electrical fire has the problem of being unable to judge the metallographic structure characteristics of the conductor melting trace, u...

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method for judging electrical short-circuit fires by using arc traces, which aims to solve the problem that the traditional open-circuit electrical fire method cannot judge the metallographic structure characteristics of conductor melting traces, and cannot judge the cause of fire, and the judgment effect is poor The problem

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