Sepam - HV/MV Protection and control units (ENG) - Trinet

Commissioning, settingCheck:c the connections,c the positions of the microswitches SW2 associatedwith the current inputs,c the general parameters in the status menu.Set the following:c type of time delay,v definite time DT,v IDMT: standard inverse time SIT,very inverse time VIT, extremely inverse time EIT,ultra inverse time UIT.c Is current: Is is set in rms, amps or kiloamps.The 999 kA setting may be used to inhibit theprotection: all the outputs are set to 0.c T time delay:v DT: T is the operation time delay,v SIT, VIT, EIT, UIT: T is the operation time delayat 10 Is.SensorsPhase overcurrent I1, I2, I3 protection is relatedto the currents connected to the following connectors:current sensor connector1 A or 5 A CT 2BCSP2L1, 2L2, 2L3Phase overcurrent I1’, I2’, I3’ protection is relatedto the currents connected to the following connectors:current sensor connector1 A or 5 A CT 3BCSP3L1, 3L2, 3L3CharacteristicscurvesettingIs set pointdefinite, inverse, very inv., ext. Inv., ultra inv.setting definite time 0.3 In i Is i 24 In expressed in ampsresolutionIDMTaccuracy (1) ±5%inhibition0.3 In i Is i 2.4 In expressed in amps1 A or 1 digit999 kAdrop out/pick-up ratio 93.5% ±5%T time delaysetting definite time 50 ms i T i 655 sresolutionIDMTaccuracy (1) definite timeIDMT100 ms i T i 12.5 s10 ms or 1 digit±2% or +25 msclass 5 or +25 ms±12.5% at 2 Is±7.5%, or from 0 to +25 ms at 5 Is±5%, or from 0 to +25 ms at 10 Is±5%, or from 0 to +25 ms at 20 Ischaracteristic timesinstantaneous< 40 ms to 2 Istripping time30 ms (typical)time-delayed tripping time according to time delaymemory time20 ms < t < 55 msfault recognition time < 25 msreset time< 70 msoutputs available for program logicinstantaneous F01X/1, F02Y/1 1 i X i 6 1 i Y i 2time-delayed F01X/2, F02Y/2 1 i X i 6 1 i Y i 2remote reading and remote setting (2)function code F01, F0201h and 02hidentification number X, Y (3)parameters curve unit: 0..4 (4)(order of parameters) Is set point unit: AT time delayunit: 10 x ms(1)in reference conditions (IEC 60255-6).(2)the data formats are defined in the manuals which describe each communication protocol.(3)the number of protection function modules depends on the type of Sepam.(4)meaning of curve index:0: definite time,1: inverse time,2: very inverse time,3: extremely inverse time,4: ultra inverse time.* function available as of version 9802 SFT2800.Protection functions2/3