DUSPOL緊湊型采用直流電壓進(jìn)行極性試驗(yàn)LEDdisplayshowsdirectandalternatingcurrentlevels12,24,50,120,230,400and750Vpolaritytestwithdirectvoltageidentifyingthephaseconductoragainsttheprotectiveconductor(PE)inalternatingvoltageloadapplicationtosuppressinductiveandcapacitivevoltageatIs 200mAVDEtestedaccordingtoDINEN/IEC61243-3