PU_37 =70% (of IBase); Current level for undercurrent pickuptUC =5s; Time delay for undercurrent tripUndercurrent feature is blocked by operation of Reconnection inhibitfeature.Reactive power overload feature:Operation QOL =Enabled; to enable this featureUP_QOL =130% (of SCB MVAr rating); Reactive power level required for pickup.Selected value gives pickup recommended by international standards.tQOL =60s; Time delay for reactive power overload tripHarmonic voltage overload feature:OperationHOL =Enabled; to enable this featureSettings for definite time delay stepHOL_DT_V =200% (of SCB voltage rating); Voltage level required for pickuptHOL_DT =10s; Definite time delay for harmonic overload tripSettings for IDMT delay stepPU_HOL_DT_V =110% (of SCB voltage rating); Voltage level required for pickup ofIDMT stage. Selected value gives pickup recommended by international standards.k_HOL_IDMT =1.0; Time multiplier for IDMT stage. Selected value gives operatetime in accordance with international standardstMax_HOL_IDMT =2000s; Maximum time delay for IDMT stage for very low level ofharmonic overloadtMin_HOL_IDMT =0.1s; Minimum time delay for IDMT stage. Selected value givesoperate time in accordance with international standards8.15.3.1 Restrike detection GUID-114747A5-0F7C-4F48-A32D-0C13BFF6ADCE v1Opening of SCBs can be quite problematic for certain types of circuit breakers (CBs).Typically such problems are manifested as CB restrikes.Section 8 1MRK 511 401-UUS ACurrent protection234 Bay control REC670 2.2 ANSIApplication manual
