REF542plus保护器速断时间的整定和逻辑完善REF542plusprotectingdevice'sspeedtimeexactlymakesandlogiciscomplete摘要:ABB公司生产的REF542plus综合保护器已在乌石化炼油厂电力系统得到广泛应用
然而,在将该保护器运用于电动机保护时,我们发现该保护器会由于速断时间整定在该保护器的最低时限而发生误动作,同时,由于其逻辑程序存在的缺陷,往往导致速断保护占用跳闸通道的现象,造成受控的电气设备无法停机,本文就此问题提出解决办法和改进意见
Abstract:REF542plusprotectingdevicesyntheticallythatABBCompanyproducedhasbeenalreadyusedwidelyinthepowersystemofoilplantofthedarkpetrochemicalindustry
But,shouldpersonwhoprotectapplytomotorprotect,wefindshouldpersonwhoprotectcanfixonbecauseofspeedbrokentimeshouldminimumtimelimitoftheprotectingdeviceactbymistakeexactlyin,meanwhile,thedefectexistingbecauseofitslogicprocedure,oftencausethespeedtoprotectthephenomenonwhichtakesupandtripsthepasswaybrokenly,causethecontrolledelectricequipmentunabletoshutdown,thistextputsforwardthesolutionan