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USER MANUAL - seb barlassina

1. SEB Divisione Elettronica e Sistemi FYNOIH OL 90ud WHIANOO S Zzz 992 aNHI NOILONAA TAEL dT IGVNH TVIOHAS cH LH XXXXXXXX XXXXXXXX XXXXXXXX SINANI 99 9IGd 99 29IQ 99 I9IQ IVLI9IQ 9 co L9 299 WAON x vH 299 WAON x u ARARARKA XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 299 WHON TH LSab NICO Tu nv TA US Tu edIAV Tu ga 9Ld SLA tld eld Ld XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 299 WHON NOILONANA SdLAV Tu ITLAV Iu OO Iu gt end TY gt snd Iu gt on TA of TA DIO TA 4n TA lt lt Tu Ta SAVIHI Lld OLA 64 84 Zd 94 Sd vd d cd ld S 22422 g 2222 s wu UIUIUI qq eee ANI XL GNI WTL uuuuud TL xo 999 gt XS VdoLi VdSL3 Vdvla Vd lL3 Vdci3 s dd d s 299 55655555 S AA AA S Zz zz S XXX ZS p p S XXL S qq ACXXXXXX Wd 999 ug b zl DAY vd edvi vd edvi GNI edi Auur Sy 999 gt esp gt es nn gt end dN Las Vdlba VdoLI Vd6ea Vd83 Vd43 Vd93 VdS3 Vdri Vdei Vdc3 Vdl3 bbbbb5bbb S KA KA AAAAAAAA S Z2 2Z qq ee e A XXXXXX Sd Sd SAVI Sd SAVI Sd WOO qNI SdI gt So gt ss nn gt snd dn Las Sd43 Sd93 Sds4 Sdrv3 Sdea Sd Sdia b6555b5b56 S AA AA AAAAAAAA S ZZ ZZ 2929 299 299 A XXXXXX LI LT ITVL LT 31IVL IT WOO GNI JTL gt on DIN on an gt on lt IN uuu
2. The 6 events are recorded and identified with a progressive number from 1 to 6 the more recent event shows a lower number Q1 EVENT NUMBER El cccccccc The index E1 E2 E6 identifies the memorized event The parameter cccccccc gives information on the kind of event and it can show one of the following values 41 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING NONE no event memorized MODOLT paralleling command issue operating mode LT MODO PS paralleling command issue operating mode PS MODO PA paralleling command issue operating mode PA U gt gt event on trip threshold U gt gt ON TEMP temporary SCK4N unit activation from digital input STATUS information recorded on external command POWER ON switch on of the protection relay auxiliary power For the events NONE and POWER ON no other information is presented for the other events the following displays give more detailed information on the event Q2 FUNCTIONAL MODE only LT operating mode and threshold U gt gt El ppp nnnnnnnn ppp identification of the operating mode LT nnnnnnnn functional mode related to the LT operating mode Ur Uc Ur Uc Ur lt Uc lt or functional mode enabled when the U gt gt threshold operates Q3 Q4 VOLTAGE THRESHOLD U gt gt and U Q3 Q4 1 U gt gt El U gt x xx Un x xx Un x xx value of the programmed thresholds U gt gt and U gt see par 5 6 expressed as Un Q5 VOLTAGE THRESHOLD U lt
3. LT PS PA U gt gt Overvoltage function inhibition 0 30 2 00 Un 0 01 Un Tcom Closing command length 0 10 0 99s 0 01 s U lt Voltage absence 0 01 0 99 Un 0 01 Un LT Tit Time delay on command issue 0 02 99 99s 0 01s TAIt Additional delay on command issue 0 00 99 99s 0 01s DUs lt Voltage difference 0 01 0 99 Un 0 01 Un Ss Voltage slipping 0 02 0 20 0 01 PS s lt Phase angle between voltages 0 90 1 Tps Time delay on command issue 0 02 99 99s 0 01s TAps Additional delay on command issue 0 00 99 99s 0 01s DUa lt Voltage difference 0 01 0 99 Un 0 01 Un Sa lt Voltage slipping 0 04 2 00 0 01 Tpa Time delay on command issue 0 02 99 99s 0 01s TApa Additional delay on command issue 0 00 99 99s 0 01s dSa gt Soars Sa Sao s SNO uo Ks Programmable constant 0 8 9 9 s 0 1 s Tk Time base 0 30 0 99 s 0 01 s Tmnv Circuit breaker operating time 0 02 0 59 s 0 01 s AUM DIM Commands Treg Commands length 0 10 9 99s 0 01s PA Ti Time delay between 2 command 0 05 99 99s 0 01s Tim Minimum time delay between 2 successive 0 05 99 99s 0 01s commands time definite Time dependent curve selection l E k Characteristic time constant 1 200s 1s Forced command issue Sx lt Too low voltage slipping 0 02 0 20 0 01 ox High phase angle difference 0 90 165 Tx Time delay between commands 0 05 99 9 s 0 01 s Command inhibition OFF Sm Excessive voltage
4. Sed DIVISIONE ELETTRONICA E SISTEMI SCKAN AUTOMATIC SYNCHRONISING RELAY USER MANUAL P500D814 August 2004 SEB Divisione Elettronica e Sistemi INDEX INDEX 1 GENERAL CHARACTERISTICS i 1 1 1 VOLTAGE CHECK DEAD BUS operating mode 1 4 1 2 SYNCHRO CHECK operating mode sassa 5 1 3 SYNCHRONIZER operating mode nnn 7 2 SERONT PANEL KEYS iiie Sannina haumanii a nissa 10 3 FRONT PANEL LED SIGNALLING rra 11 4 PROGRAMMING AND TEST 0 12 4 1 How to program the protection relay 12 4 2 How to modify a visualized parameter r 13 49 ROS eil 13 AAY Testoroupubtrelays tc cc diodo torio it ata tette Ai 14 5 DISPLAY AND PROGRAMMING 2 conne atenei tinti nta tiiuerzuei 15 Dil Standard display atenei elencare ti 15 52 Misualizalion SITUCIUFO oie eo 17 5 3 Operating modes fig 1 eani etian achete otia hene ces a ecece es 20 54 Address and time fig RA 20 5 5 Nominal values set up fig 1 n ssssssssssss 21 5 07 General Setup fig 2 er Pt 22 5 7 Set up VOLTAGE CHECK DEAD BUS LT sees 24 5 8 Set up SYNCHRO CHECK PS n nnn 26 5 9 Set up SYNCHRONIZER PA eiceocceccteset eset ene e eset eoe e eset ese eset eset eset eset ese
5. gt N dN Lads 1183 LUI 1194 lisa 1ra diea Iza iia S XXX bbb pn bbb zn A XXXXXX A XXXXXX d iLHS wood bbb en bbb IN uu u f uuu n IVASINSIS Sq va ea ea d u ATI A XXXXXX ACXXUXXX SANTVA LSVHLNOO AV IdSIG wtad un U INNINON dfl idS T vo co eco ze L FYNOIH WO4 18 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi eunBiJ ss wu yy AA uu pp 2020 L Oud INIL Did ALVO Did LOL Xd Si vi ELI cla d 2999 L 2999 d 2999 L 2999 d 2999 L 2999 d 2999 L 2999 d 2999 L 2999 d Vd Sd Sd gt o IN LT gt o zn LT on LT on IT 4n LT An LT n n SUALNOOO LL OLY GU 8H ZH 9H SH va ed ed VU eeerreee 9H ss ww yy AA ww pp AA ESTO COIG AA TOIC S II QUIL Ta 939Gd Ta TH TH TA SP I4 Zed 9co Seo ved tco
6. COM lt VVVVVVVV VVVVVVVV IMPULSIV pulse command length Tcom seconds ref D5 CONTINUO continuous command With the CONTINUO selection the output relay of the SCKAN unit will remain activated paralleling command as long as the paralleling condition will be present E7LT ADDITIONAL TIME DELAY programmable TAlt LT XX XX S An additional time delay TAIt will increase the programmed time delay Tit ref ESLT to obtain a total time delay to the command issue equals to TIt TAIt seconds Please note that at least one of the digital inputs should be programmed to activate time delay function ref G1 G2 G3 paragraph 5 11 For the programmable values please refer to table A E8LT DIGITAL INPUT ACTIVE ON ADDITIONAL TIME DELAY not programmable TAlt LT ececece It shows the digital input programmed to activate the additional time delay TAIt The parameter eeeeeeee can show one of the following values DISABLED none of the digital inputs has been programmed to activate an additional time delay TAIt DIG1 digital input DIG1 activates the TAIt delay DIG2 digital input DIG2 activates the TAIt delay DIG3 digital input DIG3 activates the TAIt delay More than one digital input can activate the same additional time delay e g DIG 1 3 Please note that to activate the additional time delay at least one of the digital inputs should be programmed ref G1 G2 G3 paragraph 5 11 25 SEB Divisione Elettronica e Sistemi
7. DISPLAY AND PROGRAMMING 5 8 Set up SYNCHRO CHECK PS E1PS VOLTAGE DIFFERENCE THRESHOLD programmable DUs uu XXXXXX V Set up of the maximum voltage difference as absolute value between the voltage Ur and the voltage Uc that will allow the issue of the paralleling command if the voltage difference is greater than the programmed value the paralleling command issue will be disabled uu threshold value expressed as Un XXXXXX threshold value expressed as Volt If the LT VOLTAGE CHECK DAED BUS mode is also enabled the SCKAN unit will verify that the DUs threshold value must be programmed lower than 0 8 U Ux If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 For the programmable values please refer to table A E2PS SLIPPING THRESHOLD programmable Ss a aa Set up of the maximum slipping as absolute value between the voltage Ur and the voltage Uc that will allow the issue of the paralleling command if the slipping is greater than the programmed value the paralleling command issue will be disabled a aa maximum allowed slipping as 9o of the frequency For the programmable values please refer to table A E3PS PHASE ANGLE THRESHOLD programmable Os lt bb Set up of the maximum phase angle as absolute value between the voltage Ur and the voltage Uc that will allow the issue of the paralleling command if t
8. ON OFF threshold e disable issue of AUM DIM commands f selection of voltages measurement channel g temporary enable of the unit operations h STATUS function recording of measures on external command i pilot wire fault monitoring only DIG2 monitors DIG1 When the function of more than one digital input refers to a threshold the priority will be the following a OF selection threshold or operating mode disabled has the priority on TA function additional time delay or ON ABIL function temporary operating enable b the ALL selection ALL the thresholds has the priority on single threshold selection 36 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING G1 DIGITAL INPUT DIG1 SET UP programmable DIGI cc XXXXXXXX Programming of the function related to digital input channel 1 DIG1 Parameter cc programming of the condition that activates the function related to digital input DIG1 the condition is selectable between HI and LO Parameter xxxxxxx programming of the function related to digital input DIG1 the following functions are selectable NONE no functions active related to digital input DIG1 TALT additional delay on paralleling command issue mode LT TA PS additional delay on paralleling command issue mode PS TA PA additional delay on paralleling command issue mode PA TA TUTTI additional delay on paralleling command issue all modes ON ABIL all unit operations enabled temporar
9. ON enabled function OFF disabled function rr parameter Tk used in the computation of the maximum voltage slipping threshold seconds suggested value 0 5 s d d parameter Ks expressed as s2 used in the computation of the maximum voltage slipping threshold suggested value 1 s k kk operating time closing delay of the paralleling circuit breaker used in the computation of the maximum voltage slipping threshold seconds dSa dt lt Ks Tk Tant Ks Tk Tmnv Tmis Ks programmable parameter ref EAPA Tk programmable parameter Tmnv circuit breaker operating time programmable ref ESPA Tmis 0 04 seconds SCKAN unit measuring time For the programmable values please refer to table A The SCKAN unit will verify if Tk is greater than Tmnv 0 27 sec If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 Example E3PA E4PA E5PA dSa ON Ks Tmnv Tk 50 s 1 2 s2 ADMIN ME dSa dt lt Ks Tk Tmnv Tmis 0 37 96 sec with Tk greater than 0 42 seconds Tmnv 0 27 29 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING E6PA TIME DELAY TO COMMAND ISSUE programmable Tps IND XX XX S Set up of the time delay to the paralleling command issue for safe operations to avoid command issue with unstable conditions of the network The time delay is definite time only For the programmable va
10. Sistemi DISPLAY AND PROGRAMMING 5 2 Visualization structure A1 ANSI 25 ALTERNATIVE FAIL TRIP TRIP TRIP TRIP DISPLAYS eeeeeeee PA LT PS U gt gt B1 B2 B3 B4 B5 B6 B7 SCK4N PROTOCOL BAUDRATE NR RELAY SER NR SW REV dd mm yy mod 4T yyyyyyyy nnnn XXX ZZZZZZZZ ZZ ZZ hh mm ss A2 FUNCTION aaa 58 LT PS PA LT PS LT PA LT PS PA SET UP NOMINAL NOMINAL DATA VALUES FIG 2 GENERAL GENERAL PARAMETERS set up SET UP FIG 2 SET UP VOLTAGE CHECK DEAD BUS set up LT FIG 2 SET UP SYNCHRO CHECK set up PS FIG 2 SET UP SYNCHRONIZER set up PA FIG 2 RELAYS OUTPUT RELAYS set up FUNCTION FIG 2 DIGITAL DIGITAL INPUT set up INPUTS FIG 2 SPECIAL SPECIAL FUNCTION set up FUNCTION FIG 2 J1 CONFIRM PROG MEASURES SIGNAL Display of SIGNALS and OUTPUT RELAYS status amp EVENTS STATUS FIG 3 EVENTS Display of EVENTS data FIG 3 COUNTERS Display of COUNTERS data FIG 3 Figure 1 17 DISPLAY AND PROGRAMMING c 9JnBiJ
11. ceo N ES 4 JJ g4 un AAt un AAA ZH 22 zz un ARCA S MM MMM SEE E qq o Td S Ta nd Ta bn on Ta Iq Ta ba zn TH DICO IU LOL L Ta ANTAA TH Xo TH Led 0cO 620 870 100 920 Sco vco ezO ecco ee e 299 ee e 299 299 AAAAAAAA S JAA S yyy ZS p p 222 gt XS TH gt XS TH US TH US TH odd Ta WOO TH wooL TH AL Ta SM TH lt esp TH Lco ozo 6LO gio LIO ciro SLO vO tIO cuo S XXX Sg Pete un xxx o TI BETE UN RTX UN XX X uf XX X un Xxx uuuuuuuu 29299292229 Auup TH 29S TA gt end IX 290 TH gt SS TA gt snd TH gt O Ta n Ta n Tel ddd 1g Ta SINIAH LLO olo 60 80 10 90 so vo tO co LO s 99 o qqq JJ J A A A A ZH pp pp A KAKKKA ZH pp pp A KAKKAK bn on SOLVIS Sp o S XxX X Nd DA Xx x Of Ad XxX x IN bn an SL dNI 6d 8d Zd 9d Sd vd d ecd bd MM COI SOLVIS MM DIG MM DIG IVLI9IGd N LN snjeqs snqeqs snjeqs snqjeqs snjeqs 020 pu 209 ZA SOIVIS gt XS us gt esp DUI dwal dv 299 u 299 TI SAV IWH SVI vid eld cll LE W LW snjeqs snqeqs snjeqs snjeqs snqeqs snjeqs snjeais snaeas snaeas snaeaqas SNIVIS SNIVIS SLNSAH 9 Vd Sd LI gt 9 IN LT 9n LT An IT va en ca TO NOTLONOA S IVNDIS SAUANSVAN T O11 61 81 LI 91 S1 v1 1 c1 VI e FYNODIH u013 19 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 3 Operating modes fig 1 A2 OPERATING MODE SELECTION programmable FUNCTION aaaaaaaa Selection of the operating modes of the SCKAN unit The available selections parameter aaaaaaaa are the follo
12. n nn threshold value expressed as Un XXXXXX threshold value expressed as Volt Example The overcome of the threshold means absence of the voltage DEAD BUS For the programmable values please refer to table A The SCKAN unit verifies that the U threshold value must be programmed lower than the value U 1 2 If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 E2LT E3LT E4LT FUNCTIONAL MODE SELECTION programmable Ur gt Uc lt Ur lt Uc gt Ur Uc Ged COG GOC ccc ON enabled functional mode OFF disabled functional mode Selection of the functional mode related to VOLTAGE CHECK DEAD BUS paralleling operations refer to paragraph 1 1 More than functional mode can be enabled at the same time E2LT E3LT E4LT Ur gt Uc lt Ur lt Uc gt Ur lt Uc lt ON OFF ON If the Uc voltage is absent and the Ur voltage is present or the Uc and Ur voltages are both absent the paralleling command will be issued Example ESLT TIME DELAY TO COMMAND ISSUE programmable Tlt IND XX XX S 24 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Set up of the time delay to the paralleling command issue for safe operations to avoid command issue with unstable conditions of the network The time delay is definite time only For the programmable values please refer to table A E6LT PARALLELING COMMAND MODE programmable
13. or STATUS are recorded in the EEPROM memory Information includes the measured parameters the programmed parameters the digital input status date and time of the event SELF DIAGNOSIS the software includes a continuous monitoring module that controls the functionality of all hardware and software resources of the protection relay Detected fault conditions are reported by e diagnostic message on the display e glow of a red LED on front panel e Rd output relay drop off The fault condition signalling stays until faults are pointed out by the monitoring module during this condition the protection functions are suspended to avoid unsuitable command delivery STATUS FUNCTION when the STATUS function is activated by one of the digital input when programmed the SCK4N unit memorizes information related to measured voltages and digital input status see par 5 14 EVENTS The recorded information allows an analysis of trip causes in co operative protection relays systems PILOT WIRE FAULT MONITORING when the function is programmed the digital input DIG2 is used to control the correct functionality of the pilot wire Digital input DIG2 is always expected to be complementary of DIG1 input HI LO or LO HI to identify faults on pilot wire The fault condition is reported as detected by the self diagnosis module but the protection functions are not suspended only the functions related to DIG1 digital input are suspended as the DIG1
14. slipping 0 50 30 0 0 1 96 53 54 55 56 SEB DIVISIONE ELETTRONICA E SISTEMI UFFICIO COMMERCIALE Via Segantini 5 20825 BARLASSINA MB tel 39 0362 5669 1 fax 39 0362 556622 web www seb barlassina it mail to servizio clienti seb barlassina it
15. status cannot be longer considered as true The fault condition is reported when DIG1 and DIG2 signals are not complementary for more then 100 ms SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS REMOTE COMMUNICATION the opto insulated serial port RS485 can communicate with a personal computer or a remote control and monitoring system equipped with an RS485 interface or with a standard RS485 RS232 converter It is possible to select the communication standard between STANDARD ASCII 7 bit Seb protocol or MODBUS ASCII mode SLAVE All the set up and measured parameters can be transmitted on the RS485 communication serial port when communication is active LED REMOTE glows the operator on front panel can visualize the relay set up but changes of parameters are disabled ENTER and buttons disabled 1 1 VOLTAGE CHECK DEAD BUS operating mode This operating mode is used to connect two electrical systems bus bars or lines of which at least one of them is dead without voltage No synchro check functions are performed it is performed only a check of absence presence of voltages The issue of the closing command to the circuit breaker paralleling is provided with a programmable time delay to avoid unsuitable command issue When one of the measured voltages exceeds a programmable threshold the operation will be disabled When the unit is programmed as the voltage check dead bus operating mode it will measu
16. the speed governor of the generator AUM accelerate DIM decelerate as function of the negative or positive sign of the voltage slipping or under specific condition as function of the phase angle between the measured voltages The commands length Treg is programmable they are issued with time cadence Ti programmable until the threshold Sa is overcame voltage slipping small enough The time cadence Ti of the command issue can be programmed as time definite or time dependent as inverse function of the voltage slipping The issue of commands to the speed governor is forced when both the Sx and ex threshold are overcame programmable thresholds these thresholds are defined to avoid stand by conditions of the paralleling system in presence of a large phase angle when the voltage slipping is zero or very low very long time to wait the paralleling condition This functionality is automatically disabled when the PS PA and LT PS PA operating mode are selected These forced command are issued with Tx time delay programmable time definite The issue of commands to the speed governor can be inhibited when the absolute value of the voltage slipping overcomes a programmable threshold Sm the inhibition function can be disabled through the keyboard or by using and external signal digital input The time delay between two consecutive commands cannot be shorter than a time delay Tim programmable to guarantee t
17. time delay TAps The parameter eeeeeeee can show one of the following values DISABLED none of the digital inputs has been programmed to activate an additional time delay TAps DIG1 digital input DIG1 activates the TAps delay DIG2 digital input DIG2 activates the TAps delay DIG3 digital input DIG3 activates the TAps delay More than one digital input can activate the same additional time delay e g DIG 1 3 27 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Please note that to activate the additional time delay at least one of the digital inputs should be programmed ref G1 G2 G3 paragraph 5 11 5 9 Set up SYNCHRONIZER PA E1PA VOLTAGE DIFFERENCE THRESHOLD programmable DUa uu XXXXXX V Set up of the maximum voltage difference as absolute value between the voltage Ur and the voltage Uc that will allow the issue of the paralleling command if the voltage difference is greater than the programmed value the paralleling command will not be issued uu threshold value expressed as Un XXXXXX threshold value expressed as Volt If the LT VOLTAGE CHECK DAED BUS mode is also enabled the SCKAN unit verifies that the DUa threshold value must be programmed lower than 0 8 U U lt If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 For the programmable values please refer to table A E2PA SLIPPING THRE
18. with rear socket e transparent front panel for rack installation e blister with items 1 2 3 4 5 CS VERSION flush mounting installation e SCKAN unit with rear socket e transparent front panel for rack flush mounting installation e n 2 brackets for flush mounting e blister with items 1 2 3 4 5 e blister with item 6 Sacchetto BLISTER 1 n 8 screws to fix wire terminals of current circuits NOT USED 2 n 4 screws to fix the relay rear socket on the 19 rack or on the two brackets for flush mounting and n 2 screws to fix optionally the protection relay on the front of the 19 rack 3 n 2 knobs to fix the transparent front panel 4 n 8 washers to be used to fix wire current terminals NOT USED 5 n 8 growers to be used to fix wire current terminals NOT USED 6 small items to fix brackets on the cabinet only CS version The knobs to fix the transparent front panel must be screwed through the front panel itself the operation will create a screw thread in the plastic material to prevent knob missing 47 SEB Divisione Elettronica e Sistemi INSTALLATION NOTE The items related to current inputs are the standard supplied items with all SIGMA N protection relays but for the SCKAN unit they
19. ATING MODE STATUS L5 L6 L7 L8 LT Ur gt LT Uc gt LT Ur c lt LT XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX L9 L10 PS PA XXXXXXXX XXXXXXXX The status of the actual operating modes is shown as the following ON enabled operating mode ref A2 paragraph 5 OFF disabled operating mode ref A2 paragraph 5 OFF_DIG operating mode temporary disabled by digital input status ref G1 G2 G3 par 5 11 OFF TEMP operating mode temporary disabled function ON ABIL ref G1 G2 G3 par 5 11 and ref H1 par 5 12 Examples LT Ur gt LT Uc gt LT Ur c lt LT ON OFF OFF ON PS PA OFF TEMP OFF The SCKAN unit is always enabled to issue the paralleling command to the circuit breaker in the VOLTAGE CHECK DEAD BUS operating mode when the reference voltage is present absence of the controlled voltage and the SCKAN unit will be enabled from digital input temporary enabled for a defined time length ref H2 to issue the paralleling command when the SYNCHRO CHECK paralleling condition is verified therefore when the controlled voltage is present and synchronised with the reference voltage L11 L15 THRESHOLDS STATUS L11 L12 L13 AB TEMP REG dSa XXXXXXXX XXXXXXXX XXXXXXXX L14 L15 Sm Sx XXXXXXXX XXXXXXXX The status of the following functions is presented 39 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING L11 unit temporary operative ref H1 paragraph 5 12 L12 AUM DIM command issue to speed governor
20. CKAN unit will disable the issue of the paralleling command The user can select the paralleling command mode as pulse command programmable length Tcom or as continuous command as long as the start conditions are present in the last case the duration of the command is equal to Tcom at least When the starting condition disappears or when the pulse command is issued the time delay TIt is reset Only when the pulse command mode is selected if the paralleling condition are still present after a command issue a new paralleling command will be issued after a time delay Tit In pulse command mode when the paralleling condition are present TIt represents the time delay before the issue of the first command and the time delay between two consecutive paralleling commands The issue of consecutive paralleling commands must be disabled by using an external control signal digital input from the circuit breaker circuit breaker closed paralleling operation completed or to enable the paralleling operation for a definite time period see paragraph 5 12 Special functions By using an external command digital input it is possible to increase of TAIt seconds the programmed time delay TIt NOTE in the programming session the SCKAN unit verifies that the threshold value U lt must be less than U gt 1 2 the threshold value U gt gt must be greater then 1 2 U gt When one or more of the above conditions are not verified an e
21. DUs lt and DUa lt programmable F7 F8 R1 DUs R1 DUa XXXXXXXX XXXXXXXX Programming of the R1 output relay activation on the START condition of the programmed threshold DUs voltage difference between the voltages Ur and Uc when enabled the PS 34 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Synchro check operating mode or of the programmed threshold DUa lt voltage difference between the voltages Ur and Uc when enabled the PA Synchronizer operating mode The parameter xxxxx is selectable as the following START output relay R1 activation when the threshold DUs or DUa lt is overcame NONE no activation related to thresholds DUs gt or DUa lt F9 OUTPUT RELAY ACTIVATION FOR PARALLELING COMMAND ISSUE programmable R1 COM XXXXXXXX Programming of the R1 output relay to deliver the paralleling command to the circuit breaker after the programmed time delay TIt Tps or Tpa The parameter xxxxxxxx is selectable as the following START command issue on paralleling condition NONE no activation F10 F11 F12 OUTPUT RELAY ACTIVATION ON PARALLELING CONDITION programmable START CONDITION without time delay F10 F11 F12 R1 AVTIt R1 AVTps R1 AVTpa XXXXXXXX XXXXXXXX XXXXXXXX Programming of the R1 output relay activation when the paralleling condition appears without any time delay START condition The parameter xxxxxxxx is selectable as the following START relay activation on the p
22. E3PA d d programmed Ks parameter see par 5 9 ref E4PA expressed as s2 k kk programmed Tk parameter see par 5 9 ref E3PA expressed as seconds Q15 PARALLELING COMMAND LENGTH El Tcom k kk s k kk paralleling command length pulse command mode or minimum paralleling command length continuous command mode Q16 PARALLELING COMMAND MODE only LT and PS operating mode El COM XXXXXXX Xxxxxx paralleling command mode of the circuit breaker IMPULSIV CONTINUO ref EGPS par 5 8 Q17 SPEED GOVERNOR COMMANDS STATUS only PA operating mode El REG ccc ccc ON OFF status of AUM DIM commands to the speed governor on event 43 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Q18 Q19 MAXIMUM VOLTAGE SLIPPING THRESHOLD TO DISABLE AUM DIM COMMAND ISSUE TO THE SPEED GOVERNOR only PA operating mode Q18 Q19 El Sm El Sm ccc aa a ccc ON OFF status of the maximum voltage slipping threshold to disable AUM DIM command issue to the speed governor aa a programmed threshold value Sm see par 5 9 ref E11PA expressed as of the nominal frequency Q20 Q21 Q22 MINIMUM VOLTAGE SLIPPING THRESHOLD FOR FORCED COMMAND ISSUE TO SPEED GOVERNOR only PA operating mode Q20 Q21 Q22 El Sx lt El Sx lt El Dx gt ccc a aa bb ccc ON OFF status of the minimum voltage slipping threshold for forced AUM DIM command issue to speed governor a aa programmed threshold Sx see par 5 9 ref E12PA expre
23. N TWO AUM DIM COMMANDS programmable Tim IND XX XX S Programming of the minimum time delay between the issue of two commands AUM or DIM Examples The time delay is time definite only For the programmable values please refer to table A The SCKAN unit will verify if the value Tim is lower than Ti ref E14PA If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 Tim IND 05 00 s E16PA TIME DELAY BETWEEN FORCED AUM DIM COMMANDS ISSUE programmable Tx IND XX XX S Programming of the time delay between two AUM or DIM commands issued forced issue by overcoming of both thresholds Sx and x gt to avoid the system stand by condition with high phase angle difference and with negligible or very low voltage slipping Example The time delay is time definite only For the programmable values please refer to table A The SCKAN unit will verify if the value Tx is higher than Tim ref E15PA If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 Tx IND 06 00 s 5 10 Output relays programming fig 2 The session allows to program the activation of the output relays R1 R2 R3 or R4 Example Equivalent information and set up related to relay R1 is available for the relays R2 R3 and R4 just changing the relay identification 33 SEB Divisione El
24. SHOLD programmable Sa a aa Set up of the maximum slipping as absolute value between the voltage Ur and the voltage Uc that will allow the issue of the paralleling command if the slipping is greater than the programmed value the paralleling command will not be issued a aa maximum allowed slipping as 9o of the frequency For the programmable values please refer to table A The SCKAN unit will verify if the threshold value Sa lt is higher than 1 2 Ss lt slipping threshold PS ref E2PS if the PS mode Synchro Check is also enabled at the same time 1 2 Sx lt slipping threshold to force command issue to the speed governor ref E12PA If both conditions are not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 Example 28 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Sa 0 80 E3PA E4PA E5PA VOLTAGE SLIPPING DERIVATIVE THRESHOLD AND RELATED PARAMETERS programmable The voltage slipping derivative threshold is used to avoid paralleling command issue when the voltage slipping is changing too quickly therefore the command issue on the computed lead condition will not guarantee the circuit breaker closing on the synchronized condition E3PA E4PA E5PA dSa lt ccc Ks Tmnv Tk rr s d d s2 k kk s Programming of the voltage slipping derivative threshold dSa and its parameters to allow the SCKAN unit to compute it ccc
25. XX Fc Uc Uq yyyyyy V dd dd Hz yyyyyy V dd dd Hz 40 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING FO P7 P8 P9 DU tx XX S o dS tyyyyyyV te th cu tbbb t ee s When a parameter is not measured as function of the active operating mode the information is not shown P1 Uq shows the measuring transducer U1 U2 U3 U4 referred to measures of Ur reference voltage and Uc controlled voltage P2 measured voltage Ur reference voltage expressed as Un and volt P3 measured frequency Fr related to reference voltage expressed as Hertz P4 measured voltage Uc controlled voltage expressed as Un and volt P5 measured frequency Fc related to reference voltage expressed as Hertz P6 difference voltage between Ur reference voltage and Uc controlled voltage expressed as Un and volt P7 voltage slipping between Ur reference voltage and Uc controlled voltage expressed as of Fr P8 phase angle between Ur reference voltage and Uc controlled voltage expressed as degree P9 voltage slipping derivative between Ur reference voltage and Uc controlled voltage expressed as degree per second 5 14 Events fig 3 On the display are shown the memorized information related to the last 6 event like paralleling command issue temporary operation enable of the SCKAN unit ref to ON TEMP selection par 5 12 power on of the SCK4N unit status memorization of measured parameter on external command
26. ages are shown in primary values as function of the set up at ref C2 Selection examples DISPLAY DISPLAY DISPLAY ANSI Fr dS C4 DISPLAY CONTRAST LEVEL programmable CONTRAST LEV x The display contrast level is programmable from 0 to 9 The backlighted display is switched off if no push button is pressed for at least 5 minutes when one of the front panel push button is pressed the display is switched on 5 6 General set up fig 2 D1 VOLTAGE PRESENCE THRESHOLD programmable U gt n nn XXXXXX V n nn threshold value expressed as Un XXXXXX threshold value expressed as Volt The overcome of the threshold means presence of the voltage For the programmable values please refer to table A 22 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING D2 OVERVOLTAGE THRESHOLD programmable U gt gt n nn XXXXXX V n nn threshold value expressed as Un XXXXXX threshold value expressed as Volt The overcome of the threshold disables the operations of SCKAN unit paralleling command issue or commands to the speed governor For the programmable values please refer to table A The SCKAN unit verifies that the U threshold value must be programmed at least 1 2 times the value of the U threshold If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 D3 D4 SELECTION OF THE MEASURED VOLTAGES programmable U2 qqq U4 qqq Se
27. and time of the last confirmed programming session are not modifiable or resettable the information related to the last programming session are used to control unauthorized access The partial counter can be modified following the standard set up procedure for parameters as described at paragraph 4 2 the partial counters are immediately modified in the memory the recorded values are immediately resetted without the need of the programming confirmation R1 R12 TRIP COUNTERS R1 R2 Id Id B cec T SCR For the U gt gt threshold and for each operating and functional mode the partial P and total T counters are displayed The counters are identified by the threshold U gt gt or by the operating mode LT Ur LT Uc gt LT Ur c lt PS PA only the programmed active operating mode are displayed When the value exceed 9999 the counter starts again from 0000 The partial counters are modifiable in the range from 0000 to 9999 following the standard set up procedure R13 R15 TOTAL PROGRAMMING SESSIONS AND DATE TIME OF THE LAST PROGRAMMING SESSION TOT PRG DATE PRG TIME PRG eeee dd mm yy hh mm ss Display of the number of confirmed programming sessions from the factory set up and the date and time of the last confirmed programming session 46 SEB Divisione Elettronica e Sistemi INSTALLATION 6 INSTALLATION 6 1 Supplied kit RK VERSION 19 rack installation the proper rack is supplied by SEB e SCKAN unit
28. aralleling condition NONE no activation F13 OUTPUT RELAY ACTIVATION ON Sm gt THRESHOLD programmable Rl Sm XXXXXXXX Programming of the R1 output relay activation on the START condition of the programmed threshold Sm accelerate decelerate command issue inhibition for excessive voltage slipping PA operating mode only The parameter xxxxxxxx is selectable as the following START output relay R1 activation when the threshold Sm is overcame NONE no activation related to threshold Sm 35 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING F14 F15 OUTPUT RELAY PROGRAMMING TO ISSUE THE AUM DIM COMMANDS TO THE GENERATOR SPEED GOVERNOR programmable F14 F15 R1 AUM R1 DIM XXXXXXXX XXXXXXXX Programming of the output relay R1 to issue commands AUM accelerate or DIM decelerate to the speed governor of the generator The parameter xxxxxxxx is selectable as the following START output relay R1 activation to issue AUM or DIM command NONE no activation enabled to issue AUM DIM commands NOTE a relay must be programmed for AUM command and another relay for DIM command F16 TEST OF OUTPUT RELAY R1 TEST R1 XXXXXXXX 5 11 Digital inputs function programming fig 2 For each digital input one of the following functions are selectable See paragraph 4 4 a additional time delay on circuit breaker closing command b ON OFF unit operation all operating modes c ON OFF specific operating mode d
29. are not used 6 2 Cabling Voltage circuits It is suggested to terminate the voltage wirings using plug terminals Minimum suggested wire cross section 1 5 mm With reference to the insertion diagram in the next page the voltages measured by the protection relay have the following matching U1 terminals 1 3 voltages with Un programmed from 190 to 380 V terminals 2 3 voltages with Un programmed from 0 to 125 V U2 terminals 6 8 voltages with Un programmed from 190 to 380 V terminals 7 8 voltages with Un programmed from 0 to 125 V U3 terminals 11 13 voltages with Un programmed from 190 to 380 V terminals 12 13 voltages with Un programmed from 0 to 125 V UA terminals 16 18 voltages with Un programmed from 190 to 380 V terminals 17 18 voltages with Un programmed from 0 to 125 V Other circuits output relays etc It is suggested to terminate the wiring using plug terminals Minimum suggested wire cross section 1 5 mm 48 SEB Divisione Elettronica e Sistemi INSTALLATION SEE FIT sig o oat tia 380V or 125V M R1 s pus R4 R5 m gt TEST SEB Divisione Elettronica e Sistemi INSTALLATION 172 9 IL HI TL fifi IITT III CJ Dimensioni meccaniche Case outlines N 4 fori 84 6 Dima montaggio da incasso Flush mounting panel cut out Montaggio incassato Flush mounting Dimensioni pannello frontale trasparente Transparent f
30. c ON enabled function OFF disabled function e ee command length seconds For the programmable values please refer to table A E11PA EXCESSIVE VOLTAGE SLIPPING THRESHOLD TO DISABLE COMMAND ISSUE TO THE SPEED GOVERNOR programmable p pp ccc ON enabled function OFF disabled function p pp voltage slipping threshold The SCKAN unit will verify if the threshold Sm will be higher than the threshold Sa If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 For the programmable values please refer to table A Sm ON 05 0 E12PA LOW VOLTAGE SLIPPING THRESHOLD TO FORCE THE ISSUE OF THE AUM DIM COMMANDS TO THE SPEED GOVERNOR programmable Example When the function is enabled if the measured voltage slipping is lower than the threshold Sx and the phase angle between Ur and Uc voltages is greater than x gt see ref E13PA the SCKAN unit will issue forced AUM DIM commands to avoid excessive long paralleling operations SX lt CCE a aa ccc ON enabled function OFF disabled function a aa low voltage slipping threshold value The SCK4N unit will verify if the threshold value Sx lt is lower than ISa 1 2 If the condition is not verified an error message will be displayed during the programming session at CONFIRM programming ref 4 1 For the programmable values please refer to table A 31 SEB Divisione El
31. d with the following sequence 1 SELECT THE VISUALIZATION of the desired output relay to be tested TEST R1 OFF 2 PRESS ENTER to activate the test session the message OFF will start to blink 3 PRESS and the message on the display will change as TEST R1 ON 4 PRESS ENTER to command the instantaneous trip of the output relay change of the current status The relay will stay on the new condition until e the or RESET push button is pressed e the ENTER push button is pressed and the sequence at points 3 and 4 is repeated presenting OFF condition The same procedure will be used for R2 R3 and R4 relays 14 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 DISPLAY AND PROGRAMMING The contents and the structure of the displayed messages are shown in figures 1 2 and 3 the references A1 B1 B2 etc identify specific displayed messages in the figures 5 1 Standard display A1 STANDARD DISPLAY It is the standard displayed message without operator s intervention no push buttons pressed for at least 5 minutes or when the RESET push button has been pressed The displayed information is function of the unit status NORMAL FUCTIONING During this state the following information can be visualized as defined by set up e Protection function ANSI code the display shows the code ANSI 25 e Measured voltages and parameters the display shows one of the measured parameters voltages or rela
32. e functional modes listed below Voltage check dead bus LT Under all functional modes the unit measures two voltages the reference voltage Ur and the controlled voltage Uc and depending on the selected functional mode from the programmed parameters and the parameters of the measured voltages voltage difference phase angle voltage slipping etc the unit deliver the closing command to the circuit breaker or the commands to the speed governor of a generator only when Synchronizer mode is selected All the functions of the unit are fully programmable by front panel keyboard or through a RS485 serial interface using a personal computer with set up program furthermore the relay can be programmed through a remote control and monitoring system OPERATING MODES the SCKAN unit manages the following functional modes e voltage check dead bus LT e synchro check PS e automatic synchronizer PA It can be selected one or more operating modes in the last case the selection of the operating mode is done automatically by the unit as function of the measured parameters Specifically the selection between the LT operating mode and the PS or PA operating modes is guaranteed by appropriate constraints between the thresholds of voltage absence presence used by the LT mode and the threshold of minimum voltage difference used by PS and PA modes The selection between the PS mode and the PA mode is based on the measurement of the voltag
33. e slipping between the measured voltages Ur and Uc It is possible to define each measured voltage available U1 U2 U3 U4 as reference voltage Ur controlled voltage Uc or no functions OFF Therefore it is possible to have more than one measured voltage for reference voltage Ur or controlled voltage Uc and to enable or disable the measuring channels U1 U2 U3 U4 using an external command digital input SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS The closing command can be delivered directly to the circuit breaker impulsive command or to a control unit which will manage the closing command to the circuit breaker continue command as closing enable signal The programmable values of the thresholds are listed in Table A OUTPUT RELAYS the SCKAN unit controls 4 output relays named R1 R2 R3 and R4 these relays can be programmed to be activated on START or TRIP conditions of one or more thresholds START instantaneous activation of the output relay when at least one of the measured voltages exceeds the programmed threshold value e g voltage presence U gt voltage difference DUs lt etc TRIP activation of the output relay to deliver closing command to the circuit breaker or TRIP related to threshold U gt gt The quiescent state of each single relay R1 R2 R3 and R4 can be programmed as normally energized ON or normally de energized OFF An additional relay R5 normally energized is co
34. ettronica e Sistemi DISPLAY AND PROGRAMMING Example Sx ON 0 05 E13PA HIGH PHASE ANGLE DIFFERENCE THRESHOLD TO FORCE THE ISSUE OF THE AUM DIM COMMANDS TO THE SPEED GOVERNOR programmable Dx gt bb bb phase angle threshold value degrees The threshold is related to the minimum slipping threshold sx lt ref E12PA For the programmable values please refer to table A Example Dx gt 45 E14PA TIME DELAY BETWEEN TWO AUM DIM COMMANDS programmable Ti eeeee XXX XX S Time delay between the issue of two consecutive AUM DIM commands Parameter Ti eeeee time delay curve selection INDIP definite time delay DIP I inverse time delay dependent time DIP E exponential time delay dependent time The time delay formulas are the followings e definite time delay TI e inverse time delay T to e exponential time delay T K aos where B Sa is Sa module of the programmed voltage slipping threshold Sa ref E2PA IS module of the measured voltage slipping If a time dependent curve is selected the value of the minimum time delay Tim between two consecutive command will be programmable ref E15PA to guarantee the correct acquisition of commands by the speed governor 32 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING For the programmable values of Ti and K please refer to table A Ti DIP I Ti INDIP 002 00 s 005 00 s E15PA MINIMUM TIME DELAY BETWEE
35. ettronica e Sistemi DISPLAY AND PROGRAMMING F1 OUTPUT RELAY R1 QUIESCENT STATUS programmable R1 NORM Xxx Programming of the R1 relay status when no START TRIP conditions are activated NORM OFF normally de energized energized status on activation NORM ON normally energized de energized status on activation F2 OUTPUT RELAY R1 ACTIVATION ON THRESHOLD U gt gt programmable RI U gt gt XXXXX Programming of the R1 output relay activation TRIP NONE on the programmed threshold U gt gt The parameter xxxxx is selectable as the following TRIP output relay R1 activation when one of the measured voltages is over the programmed threshold level U gt gt NONE no activations related to threshold U gt gt F3 F6 OUTPUT RELAY ACTIVATION ON THRESHOLDS Ur gt Ur lt Uc and Uc lt programmable F3 F4 F5 F6 Rl Ur Rl Ur lt Rl Uc Rl Uc XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX Programming of the R1 output relay activation on the START condition of the programmed thresholds Ur Ur Uc Uc on the measured voltages presence or absence of the reference voltage Ur or of the controlled voltage Uc The parameter xxxxx is selectable as the following START output relay R1 activation when one of the measured voltages is over the programmed threshold level U Ur and Uc or U Ur and Uc lt NONE no activation related to thresholds U gt or U lt F7 F8 OUTPUT RELAY ACTIVATION ON THRESHOLDS
36. fied using the arrow push buttons 2 ACTIVATE the PARAMETER MODIFICATION session depressing the ENTER push button and modify the parameter value 3 END the parameter modification session depressing again the ENTER push button 4 REPEAT the procedure from 1 to 3 for all the parameters required to obtain the new unit set up 5 CONFIRM the new protection relay set up at the visualization CONFIRM PROG Fig 1 ref J1 within 5 minutes depressing the push buttons ENTER up to visualize YES and ENTER again to confirm NOTE The unit will continue to operate using the previous set up until the new set up is confirmed as at point 5 above the visualization of the modified parameters before the new set up confirmation is only temporary to allow an easy definition of the new set up If the new set up is not confirmed within 5 minutes from the last pressed push button the SCKAN unit visualizes again the previous set up the parameters set up that the unit is still using 12 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 4 2 How to modify a visualized parameter When the parameter to be modified is visualized on front panel display do the following sequence 1 PRESS ENTER to activate the parameter modification session If one or more parameters are modifiable on the first of them will appear a blinking cursor If no parameters are modifiable no blinking cursor will appear 2 MODIFY THE PARAMETER pressing
37. he measured parameters on the event status paralleling command issue thresholdtrip etc are shown q measuring transducer 1 2 3 4 related to Ur reference voltage measurement and Uc controlled voltage measurement yyy Urand Uc voltages and voltage difference between Ur and Uc expressed as Un zz zz value of the frequency of the voltage Ur expressed as Hz f ff value of the voltage slipping between Ur and Uc expressed as of the voltage reference frequency hhh value of the phase angle between Ur and Uc expressed as degree r rr value of the voltage slipping derivative between Ur and Uc expressed as s Q33 Q34 Q35 DIGITAL INPUTS STATUS ON EVENT El E E DIGl vv DIG2 vv DIG3 vv 45 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The status of the digital inputs at the event are displayed The parameter vv can assume the value HI or LO Q36 Q37 DATE AND TIME OF THE EVENT El Date El Time dd mm yy hh mm ss The date and time of the event are showed 5 15 Trip counters fig 3 In this section are displayed the total and partial counters of the output relay activation related to the U threshold TRIP conditions or to the paralleling command issue to the circuit breaker for each operating mode and the numbers of programming sessions with the date and time of the last confirmed programming session The total counters the number of confirmed programming sessions and the date
38. he phase angle is greater than the programmed value the paralleling command issue is disabled bb maximum allowed phase angle degree For the programmable values please refer to table A 26 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING EAPS TIME DELAY TO COMMAND ISSUE programmable Tps IND XX XX S Set up of the time delay to the paralleling command issue for safe operations to avoid command issue with unstable conditions of the network The time delay is definite time only For the programmable values please refer to table A E5PS PARALLELING COMMAND MODE programmable COM ps VVVVVVVV VVVVVVVV IMPULSIV pulse command length Tcom seconds ref D5 CONTINUO continuous command With the CONTINUO selection the output relay of the SCKAN unit will remain activated paralleling command as long as the paralleling condition will be present E6PS ADDITIONAL TIME DELAY programmable TAps PS XX XX S An additional time delay TAps will increase the programmed time delay Tps ref E4PS to obtain a total time delay to the command issue equals to Tps TAps seconds Please note that at least one of the digital inputs should be programmed to activate time delay function ref G1 G2 G3 paragraph 5 11 For the programmable values please refer to table A E7PS DIGITAL INPUT ACTIVE ON ADDITIONAL TIME DELAY not programmable ececece It shows the digital input programmed to activate the additional
39. he proper acquisition by the speed governor If one or both the measured voltages overcome the U gt gt threshold the speed governor command issue will be disabled SEB Divisione Elettronica e Sistemi FRONT PANEL KEYS 2 FRONT PANEL KEYS The 5 push buttons on the front panel allow to visualize all the protection parameters and to modify the protection set up B right arrow 2 down arrow programming session activation or parameter confirmation change or increment of the selected parameter reset of the protection relay ref par 4 3 VISUALIZATION OF PARAMETERS e all visualizations are circular and they can be displayed using the two arrow push buttons e the structure of the visualizations and their contents are showed in Figures 1 2 and 3 e when the sealable transparent front panel is installed only the arrow push buttons and the RESET push button are accessible to prevent unauthorized modification of the protection set up MODIFICATION OF PARAMETERS e remove the transparent sealable front panel to access ENTER and push buttons 10 SEB Divisione Elettronica e Sistemi FRONT PANEL LED SIGNALLING 3 FRONT PANEL LED SIGNALLING POWER green FAIL red REMOTE red LT U gt gt red PS U gt gt red PA U gt gt red auxiliary supply available fault condition detected by SELF DIAGNOSIS software or by PILOT WIRE FAULT MONITORING function communication session active o
40. ime and date are programmable and they are used to mark recorded events NOTE the clock is not provided with back up battery therefore a loss of auxiliary supply will force time date to the following condition 01 01 90 00 00 00 5 5 Nominal values set up fig 1 C1 NOMINAL LINE VOLTAGE SELECTION Un programmable Un XXX XX V Un nominal line voltage selection nominal secondary voltage of plant VTs selectable between the followings 57 73 63 50 72 16 100 110 125 190 220 230 380 400 C2 PRIMARY VTs LINE VOLTAGE programmable U prim XXXXXX V 21 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Primary voltage value of the installed line VT s the value is programmable from 000001 to 999999 V C3 STANDARD DISPLAY SELECTION programmable DISPLAY ecececec It allows to select the standard displayed information ref A1 when no trip condition occurs and no fault condition have been detected by the self diagnosis module The available selections are the following ANSI displays of ANSI code Ur displays measured reference voltage Uc displays measured controlled voltage Fr displays frequency of the reference voltage Fc displays frequency of the controlled voltage DU displays the difference between Ur and Uc voltages ANGOLO displays the phase angle between Ur and Uc voltages S displays the slipping between Ur and Uc voltages dS displays the slipping derivative The volt
41. lection of the measured voltages referred to the input transducers U1 U2 U3 and U4 see insertion scheme qqq can be programmed Ur reference voltage Uc controlled voltage OFF nofunctions More than one input transducer can be programmed for the same function to allow paralleling operation in different points of the installation in this case the proper operating voltage must be selected using the digital input with specific set up to enable the measure of a voltage ref G1 G2 G3 par 5 11 NOTE it is required that the secondary voltages of the different VT s must be the same Ul Ur U3 Uc U2 Uc U4 OFF As function of the digital input the SCK4N unit allow the paralleling command issue taking into consideration the voltage measured by the U2 transducer or the voltage measured by the U3 transducer All VT s connected to U1 U2 and U3 must have the same secondary nominal voltage Example D5 PARALLELING CLOSING COMMAND LENGTH programmable Tcom k kk s k kk X length seconds of the command issued to close the circuit breaker 23 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The paralleling command when pulse command mode is selected will be issued activating the programmed output relay to close for Tcom seconds For the programmable values please refer to table A Tcom 0 20 s 5 7 Set up VOLTAGE CHECK DEAD BUS LT E1LT VOLTAGE ABSENCE THRESHOLD programmable U lt n nn XXXXXX V
42. lues please refer to table A E7PA ADDITIONAL TIME DELAY programmable TApa PA XX XX S An additional time delay TApa will increase the programmed time delay Tpa ref E4PS to obtain a total time delay to the command issue equals to Tpa TApa seconds Please note that at least one of the digital inputs should be programmed to activate time delay function ref G1 G2 G3 paragraph 5 11 For the programmable values please refer to table A E8PA DIGITAL INPUT ACTIVE ON ADDITIONAL TIME DELAY not programmable eeeeeee It shows the digital input programmed to activate the additional time delay TApa The parameter eeeeeeee can show one of the following values DISABLED none of the digital inputs has been programmed to activate an additional time delay TApa DIG1 digital input DIG1 activates the TApa delay DIG2 digital input DIG2 activates the TApa delay DIG3 digital input DIG3 activates the TApa delay More than one digital input can activate the same additional time delay e g DIG 1 3 Please note that to activate the additional time delay at least one of the digital inputs should be programmed ref G1 G2 G3 paragraph 5 11 E9PA E10PA GENERATOR SPEED GOVERNOR COMMANDS programmable Enable disable commands issue AUM accelerate DIM decelerate to the generator speed governor and command length seconds E9PA E10PA REG Treg CCC e ce s 30 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING cc
43. n RS485 port issue paralleling command with Voltage check dead bus mode and or trip threshold U issue paralleling command with Synchro check mode and or trip threshold U gt gt issue paralleling command with Synchronizing mode and or trip threshold U gt gt The last trip condition threshold indication is also showed on front panel display more information on trip condition are presented in the recorded EVENT see par 5 14 11 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 4 PROGRAMMING AND TEST The SCKAN unit is easily programmable following the instructions in the next paragraphs e HOW TO PROGRAM THE PROTECTION RELAY e HOW TO MODIFY A VISUALIZED PARAMETER All parameters can be freely modified the proper protection set up as required by the plant management is submitted to the operator s judgment 4 1 How to program the protection relay The programmable parameters are showed in Figures 1 2 and 3 at the following references B2 B6 relay address RS485 and date time C1 C4 nominal values display etc D1 D5 general set up E1LT E8LT set up voltage check dead bus mode LT E1PS E7PS set up synchro check mode PS E1PA E16PA set up synchronizing mode PA F1 F16 output relays functions G1 G3 digital input functions H1 H2 special functions R1 R20 partial trip counters reset The programming sequence is the following 1 SELECT the visualization on display of the parameter to be modi
44. nabled if the parallel condition is already present the SCKAN unit will be able to issue the paralleling command to the circuit breaker as soon as the digital input status is acknowledged The enable condition for the unit operation will be active for a programmable time delay Tabil after the change of the digital input status to operation disabled When the time delay expires the SCK4N unit will not be able to issue commands to the circuit breaker even when the paralleling conditions are present H1 H2 ABILITAZ Tabil TEMP ccc nnn S ccc ON enabled function OFF disabled function nnn time length of unit operation programmable from 1 to 999 s H1 H2 ABILITAZ Tabil TEMP ON 060 S 5 13 Signals visualization fig 3 L1 L4 MEASURING CHANNEL STATUS L1 L2 L3 L4 Ul U2 U3 U4 XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX The status of each measuring channel is shown Example Each display presents the measuring channel identification U1 U2 U3 U4 corresponding to the SCK4N transducers and the related function ref set up D3 D4 par 5 6 the function can be Uc channel measuring the controlled voltage Ur channel measuring the reference voltage OFF channel programmed disabled ref D3 D4 par 5 6 OFF DIG channel temporary disabled by a digital input ref G1 G2 G3 par 5 11 38 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Examples Ul U2 U3 U4 Ur Uc OFF OFF DIG L5 L10 OPER
45. ntrolled by the self diagnosis routines to report detected fault conditions Partial and total counters of the output relay activation on TRIP conditions or closing command delivered to the circuit breaker are available DIGITAL INPUTS there are available 3 digital inputs to activate the following functions when enabled by the programmed set up e additional time delay on circuit breaker closing commands e on off operating modes e on off thresholds e on off commands to the speed governor e Selection of voltages reference and controlled e STATUS function recording of measures on external event e pilot wire fault monitoring DIG2 only e temporary operations For each digital input can be programmed the condition that activates the related functions HI voltage gt 20 V dc ac LO voltage 0 10 V dc ac The digital input acquisition is valid when the voltage value stays in the range HI or LO for at least 40 ms SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS DISPLAY OF MEASURES the user can select the continuous display of a measured parameter such as e reference voltage or controlled voltage e frequency of the reference voltage or of the controlled voltage e voltage difference e phase angle between the measured voltages e Slipping between the measured voltages e derivative slipping between the measured voltages EVENTS information related to the last 6 events TRIP or COMMAND delivery
46. one or both the measured voltages overcome the U gt gt threshold the paralleling command issue will be disabled From the measurement of the 2 voltages the unit will compute in absolute value e the voltage difference DU e the phase angle between the voltages lol e the voltage slipping s e the voltage slipping derivative dS dt To start starting condition the time delay Tpa definite time and to allow issue of the paralleling command when the time delay expire ALL the following conditions must be verified at the same time SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS 1 n S overcoming threshold U gt 2 DU lt Dual overcoming threshold DUa lt 3 s lt Sal overcoming threshold Sa lt 4 lt n overcoming threshold dSa lt An additional condition to allow the issue of the paralleling command programmable command length Tcom issued when the lead angle between the two voltages is equal to cant is the following deo EXE 5 dt 0 the phase angle between the voltages is decreasing The threshold dSa lt is computed by using the formula dSa lt Ks Tk Tmnv 0 04 where Ks programmable constant Tk time base programmable Tmnv circuit breaker operating time programmable Note the threshold dSa dt can be disabled By using an external command digital input it is possible to increase of TApa seconds the programmed time dela
47. only LT operating mode Fl U x xx Un xxx value of the programmed threshold U lt see par 5 7 expressed as Un Q6 Q7 Q8 THRESHOLDS RELATED TO SYNCHRO CHECK OPERATING MODE only PS operating mode Q6 Q7 Q8 El DUs El Ss El S lt x xx Un a aa bb X XX programmed minimum voltage difference DUs threshold see par 5 8 ref E1PS expressed as Un a aa programmed minimum voltage slipping Ss threshold see par 5 8 ref E2PS expressed as percentage of the reference voltage frequency bb programmed minimum phase angle s lt threshold see par 5 8 ref E3PS expressed as degree 42 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Q9 Q10 THRESHOLDS RELATED TO SYNCHRONISING OPERATING MODE only PA operating mode Q9 Q10 El DUa lt El Sa lt x xx Un a aa X XX programmed minimum voltage difference DUa lt threshold see par 5 9 ref E1PA expressed as Un a aa programmed minimum voltage slipping Sa lt threshold see par 5 9 ref E2PA expressed as percentage of the reference voltage frequency Q11 Q12 Q13 Q14 PARAMETERS FOR VOLTAGE SLIPPING DERIVATIVE THRESHOLD RELATED TO SYNCHRONISER OPERATING MODE only PA mode Q11 Q12 Q13 Q14 El Tmnv El dSa gt El Ks El TK k kk S cee d d s2 k kk s k kk programmed circuit breaker operating time Tmnv see par 5 9 ref E5PA expressed as seconds ccc enable disable ON OFF voltage slipping derivative threshold see par 5 9 ref
48. put it is possible to increase of TAps seconds the programmed time delay Tps NOTE if the operation mode LT voltage check dead bus is also enabled in the programming session the SCKAN unit verifies that programmed threshold DUs must be lt 0 8 U gt U When the above condition is not verified an error message will be displayed at the end of the programming session 1 3 SYNCHRONIZER operating mode This operating mode is used to connect a synchronous generator to an electrical system bus bars or lines The SCKAN unit verifies the synchronism condition and the voltage difference between the voltages of the two electrical systems the issue of the closing command to the circuit breaker paralleling is provided with a programmable time delay to avoid unsuitable command issue When one of the measured voltages exceeds a programmable threshold the operation will be disabled To avoid excessive stress to the generator the closing command signal to the circuit breaker is delivered with lead condition ant lead angle computed as function of the voltage slipping S and of the circuit breaker operating time Tmnv in order to close the circuit breaker poles on the synchronism condition The SCKAN unit compares the voltages with the following programmable thresholds Ur voltage presence threshold U gt overvoltage threshold function inhibition U gt gt Uc overvoltage threshold function inhibition U gt gt If
49. re 2 voltages one named Ur reference voltage and one named Uc controlled voltage the two voltages can be line voltages or phase voltages The SCKAN unit compares both voltages with three programmable thresholds voltage absence threshold U lt voltage presence threshold U gt overvoltage threshold function inhibition U gt gt Three functional modes can be selected 1 LT Ur gt paralleling in presence of only Ur voltage Ur gt Uc lt rif E2LT 2 LT Uc gt paralleling in presence of only Uc voltage Ur lt Uc gt rif E3LT 3 LT Ur c lt paralleling in absence of both Ur and Uc Ur lt Uc lt rif E4LT With reference to the above functional modes for each mode the condition to start starting condition the time delay TIt definite time and the issue of the paralleling command when the time delay expire are the followings 1 LT Ur gt Ur presence Ur gt U gt overcoming threshold U gt Uc absence Uc lt Ux overcoming threshold U lt 2 LT Uc Ur absence Ur lt U lt overcoming threshold U lt Uc presence Uc gt U gt overcoming threshold U gt 3 LT Ur c lt Ur absence Ur lt U lt overcoming threshold U lt 4 SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS Uc absence Uc lt Ux overcoming threshold U lt In the programming session it is possible to enable each of the functional modes If one or both the measured voltages overcome the threshold U the S
50. ref E9PA par 5 9 L13 minimum voltage slipping derivative threshold ref E3PA par 5 9 L14 excessive voltage slipping threshold for AUM DIM command issue inhibition ref E11PA par 5 9 L15 too low voltage slipping threshold for AUM DIM forced command issue ref E12PA par 5 9 The status of each command or threshold can be ON enabled command or threshold OFF disabled command or threshold OFF DIG command or threshold temporary disabled by digital input status ref G1 G2 G3 par 5 11 except for ref L11 OFF TEMP operating mode temporary disabled under function ON ABIL ref G1 G2 G3 par 5 11 and ref H1 par 5 12 only for ref L11 M1 M2 OUTPUT RELAY STATUS The actual status of each output relay is displayed for each relay the following information is displayed e relay identification R1 R2 R3 R4 e relay status ON activated OFF non activated Note that ON OFF does not necessary mean energized or de energized see ref M1 Example M1 M2 Rl ON R3 OFF R2 OFF R4 ON N1 N2 DIGITAL INPUT STATUS The actual status of each digital input is displayed For each digital input the following information is presented e digital input identification DIG1 DIG2 DIG3 e digital input status HI or LO P1 P9 MEASUREMENT DISPLAY The actual values of the measured or computed parameters are displayed the following information is displayed P1 P2 P3 P4 P5 Ur Uq Ur x XX Fr UC X
51. requency Primary VT s voltage Output contacts ratings Number of relays note 1 Rated current Rated voltage Contact configuration Breaking capability note 2 tripping relays R1 R2 signaling relays R3 R4 R5 note 3 Mechanical life Digital inputs Number of inputs External control voltage Typical current sink Data transmission Standard Communication protocol Transmission speed Optional Auxiliary supply 57 73 63 50 72 16 100 110 V 125 190 220 230 380 400V 2 Un 2Un 50 60 Hz 1 999999 V 4 1 5A 250 V change over 0 5A 0 2A gt 108 3 as Uaux 2mA RS 485 half duplex MOD BUS ASCII 300 9600 baud selectable fibre optic module Range 24 320 Vdc 20 48 230 Vac 20 Frequency Vac 47 63 Hz Burdens min max 5 10 W Environmental conditions Operation 10 60 C Transport and storage 25 80 C Relative humidity lt 95 without condensation Protection degree for flush mounting IP 52 optional IP 54 Weight 2 5 kg Note 1 The additional relay R5 is controlled by self test program Note 2 Breaking capability at 110 Vdc L R 40 ms 100 000 operations Note 3 The output contacts of R3 and R4 relays can be configured as signalling or tripping relays SEB Divisione Elettronica e Sistemi TABLES 8 TABLES Table A Settings dg iu Threshold parameter Setting Risolut U gt Voltage presence 0 30 2 00 Un 0 01 Un
52. ront panel sizes 208 x 89 5 mm 50 SEB Divisione Elettronica e Sistemi INSTALLATION 6 3 Relays R3 and R4 Signalling Command set up The SCKAN unit is supplied with R3 and R4 relays configured as SIGNALLING RELAYS with 2 change over output contacts with breaking capability equals to 0 2 A at 110 Vac L R 40 ms 100000 operations Each R3 and R4 relay can be configured as COMMAND RELAY with 1 change over output contact with breaking capability equals to 0 5 A at 110 Vdc L R 40 ms 100000 operations The new configuration is obtained with the following cabling 6 4 RS485 serial communication port The SCKAN unit presents an insulated serial interface RS485 half duplex that allow the multi drop connection up to 31 protection units The transmission speed is automatically selected between 300 to 9600 bauds and the protocol is ASCII HEX the documentation related to the protocol is freely available on request It is suggested to use a shielded twisted pair AWG22 terminal 19 not connected internally can be used for shields connections 120 Ohm 120 Ohm CONTROLLORE PROTEZ 1 PROTEZ 2 PROTEZ 3 It is suggested to terminate the serial line with a resistance 120 O 1 4 W 51 SEB Divisione Elettronica e Sistemi TECHNICAL CHARACTERISTICS 7 TECHNICAL CHARACTERISTICS Measuring inputs Rated voltage Un programmable Thermal withstand continuously Thermal withstand for 1 s Rated f
53. rror message will be displayed at the end of the programming session 1 2 SYNCHRO CHECK operating mode This operating mode is used to connect two electrical systems bus bars or lines both energized The SCKAN unit verifies the synchronism condition and the voltage difference between the voltages of the two electrical systems the issue of the closing command to the circuit breaker paralleling is provided with a programmable time delay to avoid unsuitable command issue When one of the measured voltages exceeds a programmable threshold the operation will be disabled When the unit is programmed as synchro check operating mode it will measure 2 voltages one named Ur reference voltage and one named Uc controlled voltage the two voltages can be line voltages or phase voltages 5 SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS The SCKAN unit compares the voltages with the following programmable thresholds Ur voltage presence threshold U gt overvoltage threshold function inhibition U gt gt Uc overvoltage threshold function inhibition U gt gt If one or both the measured voltages overcome the U gt gt threshold the paralleling command issue will be disabled From the measurement of the 2 voltages the unit will compute in absolute value e the voltage difference DU e the phase angle between the voltages lol e the voltage slipping s To start starting condition the time delay Tps defini
54. ssed as of the reference voltage frequency bb programmed threshold value x gt see par 5 9 ref E13PA expressed as degree Q23 ACTIVATED OUTPUT RELAYS El RELAY nnnnnnn It shows the list of the output relay activated at the event threshold trip paralleling command issue etc Fl RELAY E3 RELAY Ly 1 4 When no output relays have been activated the following message will be displayed El RELAY NONE Q24 TOTAL TIME DELAY TO PARALLELING COMMAND ISSUE El T Tot WWW WW S Examples SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING It is shown the total delay to the paralleling command issue the time delay is inclusive of the programmed additional time delay and of the time required to wait for the cant condition only with the PA operating mode ref paragraph 1 3 When the event is memorized on external command STATUS the message N A Not Applicable is shown instead of the number of seconds El T Tot N A Q25 DIGITAL CHANNELS RELATED TO MEMORIZED EVENT Fl DIG Ly 35 4 The list of the digital inputs related to the memorized event is displayed STATUS function or paralleling command issue If no digital inputs were activated the message NONE is displayed Q26 Q27 Q28 Q29 Q30 Q31 Q32 MEMORIZED MEASURED PARAMETERS Q26 Q27 Q28 Q29 Q30 Fl Ur Uq F T Esp Fl Uc Uq El DU Fl S y yy Un zz zz Hz y yy Un ty yy Un tfaff Q31 Q32 El o El ds hhh tr rr s The value of t
55. te oc tent 28 5 10 Output relays programming fig 2 5018501550050 5085 33 5 11 Digital inputs function programming fig 2 s 36 5 12 Special function programming fig 2 ra 38 5 19 Signals visualization fig 3 acceso eet ciate aan 38 ME MM CEN Ret 41 515 THDOCOUPESES O o edee assaka ear asso isa nta ARE AEE 46 B INSTALLATION L L L aaa ones 47 Dil OSUDDIIBO KI ua eie ott eR e te btc t t y teh sia Ska S CENE etude 47 625 Xablihtga e ym tuna Tatu ap inap an lat atta st alate tt oci Mec elio 48 6 3 Relays R3 and R4 Signalling Command Set up eee teeters 51 6 4 RS485 serial communication port 51 7 TECHNICAL CHARACTERISTICS esses 52 Os TABLE eli yau haga yuwuta urnu atakanta b utt Rib 53 Information printed in this manual subject to change without prior notice This manual must not be reproduced in whole or in part in any form or by any means without the express written permission of SEB Divisione Elettronica e Sistemi SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS 1 GENERAL CHARACTERISTICS The unit SCK4N performs functions as automatic synchronizing and coupler device jointly with the CU90N for voltage equalizing and as synchro check relay in high voltage or medium voltage systems The user can select one or more of th
56. te time and to allow issue of the paralleling command when the time delay expire ALL the followings must be verified at the same time 1 i upra overcoming threshold U gt 2 pul Dus overcoming threshold DUs 3 lel los overcoming threshold s lt 4 s lt ssl overcoming threshold Ss lt The user can select the paralleling command mode as pulse command programmable length Tcom or as continuous command as long as the start conditions are present in the last case the duration of the command is equal to Tcom at least When the starting condition disappears or when the pulse command is issued the time delay Tps is reset Only when the pulse command mode is selected if the paralleling condition are still present after a command issue a new paralleling command will be issued after a time delay Tps In pulse command mode when the paralleling condition are present Tps represents the time delay before the issue of the first command and the time delay between two consecutive paralleling commands The issue of consecutive paralleling commands must be disabled by using an external control signal digital input from the circuit breaker circuit breaker closed paralleling operation completed or to enable the paralleling operation for a definite time period see paragraph 5 12 Special functions SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS By using an external command digital in
57. ted parameters the information to be visualized is selected by operator ref C3 and it is function of the selected operative mode PARALLELING COMMAND ISSUE When a paralleling command is issued or when the U gt gt threshold is overcame the unit visualizes a TRIP message that includes the operating mode related to the issued paralleling command as more than one operating mode can be programmed as active or the threshold related to the trip the displayed messages are as the following TRIP TRIP TRIP TRIP PA PS U gt gt LT The information of the trip as well the glowing of the related LEDs is displayed until the RESET push button is pressed If a new trip condition occurs the displayed information will be updated information related to previous trips are recorded in EVENTS memory FAULT CONDITION When a permanent or temporary fault condition is detected by the self diagnosis module the following message is displayed FAIL eeeeceee F PILOT Detected fault condition on pilot wire the function related to DIG1 digital input is suspended Corrective action verify pilot wire short or open circuit The string eeeeeeee can be 15 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING HARDWARE Detected fault condition on hardware or software resources of the protection relay all functions are suspended Corrective action replace the unit and contact SEB post sales service 16 SEB Divisione Elettronica e
58. the arrow push buttons and when two parameters are modifiable the push button allows to 4 point out the parameter to be modified the selected parameter will blink when numerical parameters are pointed out the push button allows to select the digit to be modified increasing of the parameter a the digits are increased by 1 unit b the other parameters are presented following the selection list 3 PRESS ENTER to end parameter modification session The modification session is ended and the parameter stops to blink NOTE if a numerical parameter is selected out of the accepted range as shown in Table A when the push button ENTER is pressed for few seconds an error message will be displayed as Data Error and the parameter will be displayed again with the former value 4 3 Reset When the push button RESET is pressed the unit returns to the standard condition e reset of glowing LEDs e drop off of tripped relays e reset of any parameter changed but not confirmed parameters are shown as confirmed at the end of the last programming session 13 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST e display on STANDARD MODE Fig 1 ref A1 par 5 1 4 4 Test of output relays When the output relays test is selected Fig 2 ref F16 it is possible to command an output relay one at the time to trip from the current status allowing functional tests on electrical plants The output relays are activate
59. wing LT VOLTAGE CHECK DEAD BUS ref par 1 1 PS SYNCHRO CHECK ref par 1 2 PA SYNCHRONISING ref par 1 3 LT PS VOLTAGE CHECK and SYNCHRO CHECK operating mode LT PA VOLTAGE CHECK and SYNCHRONIZING operating mode PS PA SYNCHRO CHECK and SYNCHRONIZING operating mode LT PS PA VOLTAGE CHECK and SYNCHRO CHECK and SYNCHRONIZING operating mode 5 4 Address and time fig 1 B1 RELAY MODEL not programmable SCK4N mod 4T B2 COMMUNICATION PROTOCOL programmable B2 PROTOCOL XXXXXXXX The communication protocol is programmable between the followings STANDARD ASCII SEB protocol MODBUS Modbus protocol SLAVE When the MODBUS protocol is selected the following display is showed to allow the selection of the transmission speed B3 BAUDRATE XXXX The xxxx parameter is selectable between the followings 300 600 1200 2400 4800 9600 20 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING When the STANDARD protocol is selected the baud rate is automatically selected by the protection relay B4 ADDRESS programmable NR RELAY 001 Programmable address from 001 to 255 The number is used on RS485 port to address a specific unit when two or more unit or protection relays are linked on the same serial line B5 RELAY SERIAL NUMBER not programmable SER NR 0012345 B6 SOFTWARE REVISION LEVEL not programmable SW REV ZZ WA B7 TIME DATE programmable dd mm yy hh mm ss T
60. y OF U1 measuring channel U1 disabled OF U2 measuring channel U2 disabled OF U3 measuring channel U3 disabled OF U4 measuring channel U4 disabled OF Ur operating mode LT on Ur and Uc conditions disabled OF Uc operating mode LT on Uc and Ur lt conditions disabled OF Ur c operating mode LT on Ur and Uc conditions disabled OFLT LT operating mode disabled OF PS PS operating mode disabled OF PA PA operating mode disabled OF TUTTI all operating modes disabled OF dSa lt threshold dSa disabled OF Sm threshold Sm gt disabled OF Sx lt threshold Sx lt disabled OF REG command AUM DIM disabled STATO activation of status function see paragraph 1 G2 DIGITAL INPUT DIG2 SET UP programmable DIG2 cc XXXXXXXX Programming of the function related to digital input channel 2 DIG2 the selections available are the same as presented for DIG1 ref G1 plus the following MONITOR activation of pilot wire monitor function G3 DIGITAL INPUT DIG3 SET UP programmable DIG3 cc XXXXXXXX 37 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Programming of the function related to digital input channel DIG3 the selections available are the same as presented for DIG1 ref G1 5 12 Special function programming fig 2 It allows the temporary operation enable of the SCKAN unit following a DIGITAL INPUT COMMAND paragraph 5 11 ref G1 G2 and G3 ON ABIL selection When the function is e
61. y Tpa When the starting condition disappears or when the pulse command is issued the time delay Tps is reset If the paralleling condition are still present after a command issue a new paralleling command will be issued after a time delay Tpa When the paralleling condition are present Tps represents the time delay before the issue of the first command and the time delay between two consecutive paralleling commands The issue of consecutive paralleling commands must be disabled using an external control signal digital input from the circuit breaker circuit breaker closed paralleling operation completed or to enable the paralleling operation for a definite time period see paragraph 5 12 Special functions NOTE If the operation mode PS synchro check is also enabled in the programming session the SCKAN unit verifies that SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS ISal gt 1 2 Ss lt and the overcome of the threshold Ss lt enables the PS operating mode instead of PA operating mode If the operation mode LT voltage check dead bus is also enabled in the programming session the SCKAN unit verifies that programmed threshold DUa must be lt 0 8 U gt U lt When the above conditions are not verified an error message will be displayed at the end of the programming session Generator speed governor commands Two output relays can be programmed to deliver commands to

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