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

Commissioning, settingCheck:c the connections,c the positions of the microswitches SW associatedwith the current and voltage inputs,c the general parameters in the status menu.The number of voltages set up in the status menu,VT ratio heading must be different from V.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.SensorsVoltage restrained overcurrent protection is relatedto the currents and voltages connected to thefollowing connectors:current sensor connector1A or 5A CT 2BCSP2L1, 2L2, 2L3voltage sensor connectorS36* 4A (1)S26* 3A(1)3A connector for S36*TR and S36TS models.Characteristicscurvesetting definite, inverse, very inv., ext. Inv., ultra inv.Is set pointsetting definite time 0.5 In i Is i 24 In expressed in ampsresolutionIDMTaccuracy (1) ±5%inhibition0.5 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 sresolutionIDMT100 ms i T i 12.5 s10 ms or 1 digitaccuracy (1) definite time ±2% or ±25 msIDMTcharacteristic timesinstantaneous tripping timetime-delayed tripping timememory timefault recognition timereset timeoutputs available for program logicclass 5 or +25 ms (for U > 0.8 Un):±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 Is< 50 ms for I > 3 Isaccording to time delay50 ms < t < 95 ms< 25 ms< 60 ms < t < 110 msinstantaneous F19X/1 1 i X i 2 F20Y/1 1 i Y i 2time-delayed F19X/2 1 i X i 2 F20Y/2 1 i Y i 2remote reading and remote setting** (1)function code F19, F20identification number X (2)19h and 20hparameters curve unit: 0..4 (3)(order of parameters) Is set point unit: AT time delayunit: 10 x ms(1)the data formats are defined in the manuals which describe each communication protocol.(2)the number of protection function modules depends on the type of Sepam.(3)meaning of curve index:0: definite time,1: inverse time,2: very inverse time,3: extremely inverse time,4: ultra inverse time.(4)in reference conditions (IEC 60255-6).* or S35, S25 for earlier versions.* * function available as of version 9802 SFT2800.Protection functions2/5