Function Range or value AccuracyTime delay for re-trip at 0 to 2 x Iset (0.000-60.000) s ±0.2% or ±15 mswhichever is greaterTime delay for back-up trip at 0 to 2 x Iset (0.000-60.000) s ±0.2% or ±15 mswhichever is greaterTime delay for back-up trip at multi-phase start at0 to 2 x Iset(0.000-60.000) s ±0.2% or ±20 mswhichever is greaterAdditional time delay for a second back-up trip at0 to 2 x Iset(0.000-60.000) s ±0.2% or ±20 mswhichever is greaterTime delay for alarm for faulty circuit breaker (0.000-60.000) s ±0.2% or ±15 mswhichever is greater8.7 Pole discordance protection CCPDSC IP14516-1 v58.7.1 IdentificationM14888-1 v4Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberPole discordance protection CCPDSCPDSYMBOL-S V1 EN-US52PD8.7.2 Functionality M13269-3 v15An open phase can cause negative and zero sequence currents which cause thermalstress on rotating machines and can cause unwanted operation of zero sequence ornegative sequence current functions.Normally the own breaker is tripped to correct such a situation. If the situationpersists the surrounding breakers should be tripped to clear the unsymmetrical loadsituation.The Pole discordance protection function (CCPDSC) operates based oninformation from auxiliary contacts of the circuit breaker for the three phases withadditional criteria from unsymmetrical phase currents when required.1MRK 505 394-UEN A Section 8Current protectionLine differential protection RED650 2.2 IEC 219Technical manual
