Feeder Protection and Control REF615 Product Guide
68Pages

Table 44. Negative phase-sequence overcurrent protection (NSPTOC) Characteristic Value Operation accuracy Depending on the frequency of the currentmeasured: f > n 2Hz ѱ1.5% of the set value or 0.002 x I > n Start time > 1)2) Minimum Typical Maximum I > Fault = 2 x set Startvalue 22 ms14 ms 24 ms 16 ms 25 ms 17 ms I > Fault = 10 x set Startvalue Reset time < 40 ms Reset ratio Typical 0.96 Retardation time < 35 ms Operate time accuracy in definite time mode ѱ1.0% of the set value or 20 ms Operate time accuracy in inverse time mode ѱ5.0% of the theoretical value or 20 ms > 3) Suppression of...

Table 46. Phase discontinuity protection (PDNSPTOC) Characteristic Value Operation accuracy Depending on the frequency of the currentmeasured: f > n 2Hz ѱ2% of the set value Start time < 70 ms Reset time < 40 ms Reset ratio Typical 0.96 Retardation time < 35 ms Operate time accuracy in definite time mode 1.0% of the set value or ѱ20 ms Suppression of harmonics DFT: -50dB at f = n x f > n , where n = 2, 3, 4, 5, Table 47. Phase discontinuity protection (PDNSPTOC) main settings Parameter Function Value (Range) Step Start value (Currentratio setting I PDNSPTOC 10...100 % 1 > 2 /I > 1 ) Operate...

Table 49. Circuit breaker failure protection (CCBRBRF) main settings Parameter Function Value (Range) Step Current value(Operating phase current) CCBRBRF 0.05...1.00 x I > n 0.05 Current value Res (Operating residual current) CCBRBRF 0.05...1.00 x I > n 0.05 CB failure mode (Operating mode of function) CCBRBRF 1=Current 2=Breaker status 3=Both CB fail trip mode CCBRBRF 1=Off 2=Without check 3=Current check Retrip time CCBRBRF 0...60000 ms 10 CB failure delay CCBRBRF 0...60000 ms 10 CB fault delay CCBRBRF 0...60000 ms 10 Table 50. Three-phase thermal overload (T1PTTR) Characteristic Value...

Table 52. Three-phase inrush current detection (INRPHAR) Characteristic Value Operation accuracy At the frequency f=f > n Current measurement:1.5% of the set value or ѱ0.002 x I > n Ratio I2f/I1f measurement: 5.0% of the set value Reset time +35 ms / -0 ms Reset ratio Typical 0.96 Operate time accuracy +35 ms / -0 ms Table 53. Three-phase inrush detection (INRPHAR) main settings Parameter Function Value (Range) Step Start value (Ratio of the 2nd to the 1st harmonic leading to restraint) INRPHAR 5...100 % 1 Operate delay time INRPHAR 20...60000 ms 1 Table 54. Arc protection (ARCSARC)...

Table 55. Arc protection (ARCSARC) main settings Parameter Function Value (Range) Step Phase start value(Operating phase current) ARCSARC 0.50...40.00 x I > n 0.01 Ground start value (Operating residual current) ARCSARC 0.05...8.00 x I > n 0.01 Operation mode ARCSARC 1=Light+current 2=Light only 3=BI controlled Table 56. Operation characteristics Parameter Values (Range) Operating curve type 1=ANSI Ext. inv. 2=ANSI Very. inv. 3=ANSI Norm. inv. 4=ANSI Mod inv. 5=ANSI Def. Time 6=L.T.E. inv. 7=L.T.V. inv. 8=L.T. inv. 9=IEC Norm. inv. 10=IEC Very inv. 11=IEC inv. 12=IEC Ext. inv. 13=IEC S.T....

Table 57. Autoreclosure (DARREC) Characteristic Value Operate time accuracy 1.0% of the set value or ѱ20 ms Table 58. Three-phase current measurement (CMMXU) Characteristic Value Operation accuracy Depending on the frequency of the currentmeasured: f > n 2Hz ѱ0.5% or 0.002 x I > n (at currents in the range of 0.01...4.00 x I > n ) Suppression of harmonics DFT: -50dB at f = n x f > n , where n = 2, 3, 4, 5,хRMS: No suppression Table 59. Current sequence components (CSMSQI) Characteristic Value Operation accuracy Depending on the frequency of the current measured: f/f > n = 2Hz ѱ1.0% or 0.002...

Table 61. Voltage sequence components (VSMSQI) Characteristic Value Operation accuracy Depending on the frequency of the voltagemeasured: f > n 2HzAt voltages in range 0.01х1.15 x U > n 1.0% or ѱ0.002 x U > n Suppression of harmonics DFT: -50 dB at f = n x f > n , where n = 2, 3, 4, 5, Table 62. Residual current measurement (RESCMMXU) Characteristic Value Operation accuracy Depending on the frequency of the currentmeasured: f/f > n = ű2Hz 0.5% or ѱ0.002 x I > n at currents in the range of 0.01...4.00 x I > n Suppression of harmonics DFT: -50dB at f = n x f > n , where n = 2, 3, 4, 5,RMS: No...

Table 64. Three-phase power and energy (PEMMXU) Characteristic Value Operation accuracy At all three currents in range 0.101.20 x I > n At all three voltages in range 0.50Ņ1.15 x U > n At the frequency f > n 1HzActive power and energy in range |PF| > 0.71Reactive power and energy in range |PF| < 0.71 ѱ1.5% for power (S, P and Q) 0.015 for power factor ѱ1.5% for energy Suppression of harmonics DFT: -50 dB at f = n x f > n , where n = 2, 3, 4, 5, Table 65. Current circuit supervision (CCRDIF) Characteristic Value Operate time > 1) < 30 ms > 1)Including the delay of the output contact. Table...

Table 67. Fuse failure supervision (SEQRFUF) Characteristic Value Operate time > 1) NPS function U > Fault = 1.1 x set NegSeq voltage Lev < 33 ms U > Fault = 5.0 x set NegSeq voltage Lev < 18 ms ՕDelta function ˂ U = 1.1 x set < 30 ms Voltage change rate ˂ U = 2.0 x set < 24 ms Voltage change rate > 1)Includes the delay of the signal output contact, f n = 50 Hz, fault voltage with nominal frequency injected fromrandom phase angle, results based on statistical distribution of 1000 measurements size="-1">

The IED is available with two optionaldisplays, a large one and a small one. Both LCD displays offer full front-panel user- interface functionality with menu navigation and menu views.The large display offers increased front-panelusability with less menu scrolling and improved information overview. The largedisplay is suited for IED installations where the front panel user interface is frequently used, whereas the small display is suited for remotely controlled substations where the IED is only occasionally accessed locally via the front panel user interface. > IECA070904 V2 EN IECA070901...