GB/T 16840.2-2021: Technical determination methods for electrical fire evidence - Part 2: Residual magnetism method

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Scope

This document specifies the principle, instruments, equipment and materials, test
materials, methods and steps, and determination criteria of the residual magnetism
method in the technical determination methods for electrical fire evidence.
This document applies to fire accident investigations, when no short circuit melted
marks or lightning melted marks are found at the scene of a building fire, the residual
magnetic data obtained from the testing of ferromagnetic metal conductors is used to
determine whether a large current short circuit or lightning strike has occurred.

Basic Data

Standard ID	GB/T 16840.2-2021 (GB/T16840.2-2021)
Description (Translated English)	Technical determination methods for electrical fire evidence - Part 2: Residual magnetism method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	C80;C89
Word Count Estimation	6,629
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration