An　efficient　arc　fault　simulation　device　is　beneficial　to　the　research　on　the　mechanism　and　detection　technology　of　arc　faults.　In　order　to　simulate　the　arc　fault　caused　by　insulation　aging,　an　arc　fault　simulation　device　based　on　closed-loop　feedback　control　was　developed.　The　device　consists　of　two　high-voltage　carbonization　circuits　and　a　test　circuit,　which　are　used　for　pretreating　cable　specimens　and　testing　the　effects　of　carbonization　respectively.　In　order　to　improve　the　success　rate　of　cable　carbonization　channels　formation,　arc　voltage,　arc　current-zero　period　and　arc　current　rise　rate　are　taken　as　the　basis　for　arc　fault　judgment.　Finally,　the　characteristics　of　carbonized　arc　are　analyzed　by　using　time　domain　and　frequency　domain　analysis　methods.　The　results　show　that　the　developed　cable　carbonization　device　can　generate　continuous　burning　arc　and　reduce　the　interference　of　human　factors　in　the　experiment　process,　which　lays　a　foundation　for　further　research　on　the　formation　mechanism　of　fault　arc.　©　2022　IEEE.