In this paper

the flame retardant cable smoke density test equipment

combustion process and samples

etc are briefly introduced. According to the principle of single variable

a variety of test schemes were designed according to the structure and materials of the cable. Through test and statistical analysis

the smoke density test results of flame retardant cables under each structure and material are given

and the reasons are analyzed. In addition

a simplified verification scheme validates the individual’s ability to smoke for a component or material.