Maintenance and testing of overcurrent protective devices | EEP
Maintenance and testing of overcurrent protective devices | EEP
May 4, 2015
electrical-engineering-portal.com
8. The table below represents three differenttypes of overcurrent protective devices withthe same ampere rating. Each is protecting a3-phase circuit with a specific amount ofarcing current. Assume tests for this specificarcing current resulted in the clearing timesshown.DeviceOCPD Clearing Time ForSpecific Arcing FaultCurrentOCPD 130 cyclesOCPD 2Current-limitingOCPD 31 cycleWhich OCPD permits the greatest arc flashhazard at this specific arcing current level?Oa. OCPD 1Ob. OCPD 2Oc. OCPD 3Od. The
8. The table below represents three differenttypes of overcurrent prote…
9 months ago
numerade.com
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