5-194 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUALFLEXLOGIC CHAPTER 5: SETTINGS5FLEXELEMENT 1 HYSTERESIS — This setting defines the pickup–dropout relation of the element by specifying the width of thehysteresis loop as a percentage of the pickup value as shown in the FlexElement Direction, Pickup, and Hysteresis diagram.FLEXELEMENT 1 dt UNIT — Specifies the time unit for the setting FLEXELEMENT 1 dt. This setting is applicable only ifFLEXELEMENT 1 COMP MODE is set to “Delta.”FLEXELEMENT 1 dt — Specifies duration of the time interval for the rate of change mode of operation. This setting isapplicable only if FLEXELEMENT 1 COMP MODE is set to “Delta.”FLEXELEMENT 1 PKP DELAY — Specifies the pickup delay of the element.FLEXELEMENT 1 RST DELAY — Specifies the reset delay of the element.5.6.8 Non-volatile latchesSETTINGS FLEXLOGIC NON-VOLATILE LATCHES LATCH 1(16)BREAKER ACC ARCING AMPS(Brk X Acc Arc Amp A, B, and C)BASE = 2000 kA 2 × cycleBREAKER ARCING AMPS(Brk X Arc Amp A, B, and C)BASE = 1 kA 2 × cycleDCmA BASE = maximum value of the DCMA INPUT MAX setting for the two transducers configuredunder the +IN and –IN inputsDELTA TIME BASE = 1 μsFAULT LOCATION BASE = Line Length as specified in Fault ReportFREQUENCY f BASE = 1 HzFREQUENCY RATE OF CHANGE df/dt BASE = 1 Hz/sPHASE ANGLE ϕBASE = 360 degrees (see the UR angle referencing convention)POWER FACTOR PF BASE = 1.00RTDs BASE = 100°CSENSITIVE DIR POWER(Sns Dir Power)P BASE = maximum value of 3 × VBASE × I BASE for the +IN and –IN inputs of the sources configuredfor the sensitive power directional element(s).SOURCE CURRENT IBASE = maximum nominal primary RMS value of the +IN and –IN inputsSOURCE ENERGY(Positive and Negative Watthours,Positive and Negative Varhours)EBASE = 10000 MWh or MVAh, respectivelySOURCE POWER P BASE = maximum value of V BASE × I BASE for the +IN and –IN inputsSOURCE THD & HARMONICS BASE = 1%SOURCE VOLTAGE VBASE = maximum nominal primary RMS value of the +IN and –IN inputsSYNCHROCHECK(Max Delta Volts)VBASE = maximum primary RMS value of all the sources related to the +IN and –IN inputsVOLTS PER HERTZ BASE = 1.00 puZ BASE ZBASE = PhaseVTSecondary / PhaseCTSecondary, where PhaseVTSecondary andPhaseCTSecondary are the secondary nominal voltage and the secondary nominal current of thedistance source. In case multiple CT inputs are summed as one source current and mapped as thedistance source, use the PhaseCTSecondary value from the CT with the highest primary nominalcurrent.Distance source is specified in setting under SETTINGS GROUPED ELEMENTS SETTINGGROUP 1(6) DISTANCE.PhaseVTSecondary and PhaseCTSecondary are specified in setting under SETTINGS SYSTEMSETUP AC INPUTS. LATCH 1 LATCH 1FUNCTION: DisabledRange: Disabled, Enabled LATCH 1 ID:NV Latch 1Range: up to 20 alphanumeric charactersUnit Description
