A　reconstruction　method　using　experimental　arc　fault　data　to　improve　the　testing　efficiency　of　protection　devices　is　introduced.　By　establishing　an　arc-current　database　and　employing　collaborative　control　of　data　and　circuit　feedback　signals,　the　electronic　load　can　be　precisely　regulated　enabling　arc　fault　currents　to　be　reproduced　in　real-world　circuits.　To　address　the　frequency　mismatches　caused　by　power　frequency　fluctuations,　an　adaptive　correction　control　strategy　is　proposed　to　eliminate　waveform　distortions　in　the　reconstructed　arc　current.　Simulations　and　experiments　confirmed　the　consistency　between　the　arc　data　and　reconstructed　current　signals,　and　the　method＇s　feasibility　was　further　validated　by　testing　six　arc-fault　protection　devices　from　different　manufacturers.　　©　2017　CMP.