On the basis of the original protection configuration of the incoming line of the rectifier set,an optimized scheme for supplementing of reverse time overload protection is put forward.It is able to perform the setting of inverse time overload protection,obtain the lower limit values under different inverse time characteristic curves,put forward rational proposals,give examples and verify the rationality of the setting curves through different current values.
incoming line of rectifier setinverse time overload protectioninverse time curves under IEC standard series