USER MANUAL - seb barlassina
Contents
1. esee 19 5 6 1 Percentage biased differential thresholds ld gt Ido fig 2 19 5 6 2 Second differential thresholds ld gt gt Ido fig 2 21 5 7 Output relays programming fig 2 nnne 22 5 8 Digital inputs function programming fig 2 es 23 5 9 Parameter values visualization fig 3 25 5 10 LL LLL LLL ie di 26 Trips counters NOs OO 29 6 INSTALLATION 03500 eo ae ee NER hea UON me alan 30 Dik Supplied KIE ei Co 30 Spy a Cabling aae i NS 31 6 3 Relays R3 and R4 Signaling Command set up 36 64 RS485 serial communication port rtt ttrtrnnnrr rrtt rrreenn 36 7 TECHNICAL OHRARAOIERISTEIOS KN 37 38 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 protection relay IDG8N performs function as three poles percentage biased generator differential protection relay ANSI 87G and or selective earth fault protection relay ANSI 64Ss the user can select one of2. G1 OUTPUT RELAY R1 QUIESCENT STATUS programmable R1 NORM xxx Programming of the R1 relay status when no START or TRIP conditions are activated none of the measured currents exceed their thresholds NORM OFF normally de energized energized status on activation NORM ON normally energized de energized status on activation R1 NORM OFF 22 Example SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING G2 G5 OUTPUT RELAY ACTIVATION ON THRESHOLDS Id gt Id gt gt Ido Ido gt gt programmable G2 G3 G4 G5 R1 Id Rl Id gt gt R1 Ido R1 Ido gt gt XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX Programming of the R1 output relay activation TRIP on the Id ld gt gt Ido ldo gt gt thresholds The parameter xxxxxxxx is selectable as the following START instantaneous output relay R1 activation when one of the measured currents exceeds the programmed threshold TRIP output relay R1 activation when one of the measured currents exceeds the programmed threshold level for at least Tl or TI TA seconds NONE no activations related to thresholds Examples related to several relays G2 G3 G4 G5 R1 Id R2 Id R1 Ido RA Ido gt gt START TRIP TRIP NO AZION G6 TEST OF OUTPUT RELAY R1 TEST R1 XXXXXXXX See paragraph 4 4 5 8 Digital inputs function programming fig 2 For each digital input one of the following functions are selectable a additional time delay related to one or more threshol
3. It is suggested to terminate the serial line with a resistance 120 O 1 4 W 36 SEB Divisione Elettronica e Sistemi TECHNICAL CHARACTERISTICS 7 TECHNICAL CHARACTERISTICS Measuring inputs Rated phase current In Rated earth current lon Thermal withstand continuously Thermal withstand for 1 s Rated frequency Primary CT s current 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 Range Frequency Vac Burdens min max Environmental conditions Operation Transport and storage Relative humidity without condensation Protection degree Weight Note 1 Note 2 Note 3 tripping relays 1A 5A programmable 1Aor5A 4 In lon 100 In lon 50 60 Hz 1 18500 A 4 1 5A 250 V change over 0 5 A 0 2 A gt 105 6 as Uaux 2 mA RS 485 half duplex MOD BUS ASCII 300 9600 baud selectable fibre optic module 24 320 Vdc 20 48 230 Vac 20 47 63 Hz 5 10 W 10 60 C 25 80 C lt 95 IP 31 3 5 kg The additional relay R5 is controlled by self test program Breaking capability at 110 Vdc L R 40 ms 100 000 op
4. R4 R5 SECOND DIFFERENTIAL THRESHOLD PARAMETERS It is shown the parameters related to the second differential threshold This information is not presented on STATUS event R4 R5 El TP gt gt El DI P2 xxx5 nn nn In R6 ACTIVATED OUTPUT RELAYS El RELAY nnnnnnn It shows the list of the output relay activated by the threshold trip El RELAY E3 RELAY 1 3 4 1 4 When no output relays have been activated no relays programmed to TRIP on the threshold the following message will be displayed El RELAY NONE Examples 27 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING R7 TOTAL TIME DELAY ON TRIP El T Tot WWW WW S It is shown the total delay to the TRIP of the output relays from the overcurrent detection when additional delays are activated the change of the status of the digital input that controls the additional delay during the delay itself could bring to a total time different from the sum of the programmed delays If the total time is greater than 999 seconds the display of tenths is omitted 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 R8 DIGITAL CHANNELS RELATED TO MEMORIZED EVENT El DIG ly 3544 The list of the digital inputs related to the memorized event is displayed STATUS function command or additional time TA enabled rif par 5 8 If no digital inputs were activated the m
5. FUNCTION XXXXXXXX The functions performed by protection relay are selectable between the followings 87G Generator differential 64Ss Differential earth fault 87G 64Ss Generator differential and differential earth fault FUNCTION FUNCTION 87G 87G 64SS 5 5 Nominal values set up fig 2 D1 NOMINAL CURRENT SELECTION In programmable Examples In x A In x A Ton 1 A Ton 5 A In nominal phase current programmable 1 or 5 A lon nominal earth current defined by models manufacturer set up lon 5 A IDG8N model A5 lon 1 A IDG8N model A1 D2 PRIMARY PHASE CURRENT programmabile In prim XXXXX A 17 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Primary phase current value of the installed phase CTs the value is programmable from 0001 to 18500 A D3 PRIMARY EARTH CURRENT programmable Ion prim XXXXX Primary current value of the installed earth CT the value is programmable from 0001 to 18500 A D4 STANDARD DISPLAY SELECTION programmable DISPLAY eeeeeece 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 Id1 displays differential current phase 1 Id2 displays differential current phase 2 Id3 displays differential current phase 3 Ido displays of the earth differential current
6. Sed DIVISIONE ELETTRONICA E SISTEMI IDG8N DIGITAL PERCENTAGE BIASED GENERATOR DIFFERENTIAL PROTECTION RELAY USER MANUAL P501D806 September 2004 SEB Divisione Elettronica e Sistemi INDEX INDEX 1 XSENERALOHARACTERISTIGS Xd aiar e exe Dt buen met que nda ta laste 1 1 1 Operation of the differential thresholdS nn 3 1 2 Generator differential protection ANSI 870 5 1 3 Differential earth fault protection ANSI 64558 6 2 FRONT RANEL KEYS eet ento 7 3 FRONT PANEL LED SIGNALLING 4 8 A PROGRAMMING ANETES es 9 4 1 How to program the protection relay rr trrtrrnnnnrr rn rrrreeen 9 4 2 How to modify a visualized 8 10 43 ROSE 10 2 NOSDONOUIDUNIOINVSLONO 11 5 DISPLAY AND PROGRAMMING nnn nennen 12 5 1 Standard display eee i 12 52 Visualization SIPUGIUFG c cec coc exex ence ened ence exer coer enc ener vet ebe Rn 13 5 9 Address and time fig 1 uoo ES 16 5 4 Function selection Hg 1 aero otra rotation rotta 17 55 Nominal values set up fig s Ea anon oa Ru odo ep Sa ding 17 5 6 Thresholds and time delays set up fig 2
7. UU AA uu pp 9999 I 9999 d 9999 L 9999 g 9999 L 2999 gd 2999 I 9999 gd Dad ANIL Oud ALYA Oud LOL OPT OPT lt OPI lt ODI lt lt DI lt lt PI lt PI PI SddtNnOO LLS OLS 6S 8S 48 98 SS vs 68 cs LS 8a ss uu uq AA uw pp AA 991d GOIG AA DTQ AA DIG AA Z5TQ UIL Ta eyed Ta Ta Ta Ta Ta Ta vey EZH ecd LZH 0Zd 6L 8l AA TPDTQ uu u ur UU UU ur uu uu ur UU UU UU U ur UU UU Ta oer Ta eel cel Ta OPI Ta EDI Ta 9L SLY vi ely CLI LL ur uu uu uI uu uu 09999999 S MM 3L ur UU XXX Zd XX Td UI XX XX CPI Td IPI Ta DIO TH 401 1 Ta SINNI Ta Id IX lt lt dI Ta dl Tad dI TH Ta SINHA OLY GU 8 28 9H SY va ed ed VH V AAAAA AAA AA AA AA AAA AA AA AAA AAA SOLWLS XX X O XX X fe XX X 7e XX Te XX X XX X Ep XX X epp XX X P SIANSVYAIN 8d 4d 9d Sd td d MM 9DIQ MM pOIG MM ZDTQ SALVIS MM GOId MM DIG MM TDIC TVILIDIO N LN 2099 pA 209 SALVIS 95959 9559 AYTAN ZN LN sn eqs snqjeqs snjeqs snjeqs snjeqs snjeqs SALVIS SOIVIS SINHAH 3 lt lt OdI lt lt OPI lt ODI lt lt dI lt lt PI PI IOHSWHHIL TVNDTS SIANSVYIN 91 ST 1 V1 FYNOIH 15 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 3 Address and time fig 1 B1 RELAY MODEL not programmable IDG8N m
8. 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 Howto program the protection relay The programmable parameters are showed in Figures 1 2 and 3 at the following references B2 B7 relay address RS485 and date time C1 relay functions D1 D6 nominal values contrast etc E1 E9 thresholds and time delays Id gt percentage biased differential threshold and Ido gt threshold F1 F6 thresholds and time delays ld gt gt threshold and Ido threshold G1 G6 output relays functions H1 H6 digital input functions S1 S8 partial trip counters reset The programming sequence is the following 1 SELECT the visualization on display of the parameter to be modified 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 protection relay 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
9. of the differential current Ila module of the stabilizing current Ib insensibility threshold P1 P2 slopes of the tripping characteristic DI intersection of the P2 straight line with Id In axis The listed disequations define the operating characteristic as presented in figure A and they are verified with all the differential currents and their stabilizing currents related to phase currents ANSI 87G and earth current ANSI 64Ss The differential threshold Id gt gt and the second branch of the operating characteristic related to Id threshold slope P2 can be programmed ON OFF All the differential thresholds are definite time 0 02 99 99 s and each of them can be combined with an additional timer controlled by the digital inputs The minimum activation time of the output relay is programmable in order to avoid short commands to switchgears when CT s saturate SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS Id In Ido Ino Id gt gt Ido gt gt Zona di intervento Operating zone Zona di non intervento Non operating zone ID gt ae Ibo gt ee 24 em 7 la In 7 lao Ino 7 7 7 Z 7 DI Dlo Operating characteristic figure A 1 2 Generator differential protection ANSI 87G The protection relay IDG8N has been designed to provide three poles percentage biased differential p
10. suspended as the DIG1 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 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 4 Operation of the differential thresholds The IDG8N relay performs functions as percentage biased differential protection relay the tripping characteristic for the ANSI 87G function equivalent characteristic applies to ANSI 64Ss is presented in figure A A differential protection relay operates on the principle of current comparison and with a healthy protected object the current leaving is the same as that which entered it Any measured current difference is a clear indication of a fault condition within the protected zone The digital percentage biased generator differential relay can be used to protect high voltage cables maximum length about 1 km it
11. the threshold set up and activated relays TRIP event only the measured currents the digital input status date and time of the event SELF DIAGNOSIS the software includes a non stop 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 RS output relay drop off The fault condition signaling stays until faults are pointed out by the monitoring module during this condition the protection functions are suspended to avoid unsuitable tripping STATUS FUNCTION when the STATUS function is activated by one of the digital input when programmed the protection relay memorizes information related to measured currents and digital input status see par 5 10 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 SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS 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
12. time delay or related to a threshold expires 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 controlled by the self diagnosis routines to report detected fault conditions Related to each threshold partial and total counters of TRIP conditions are available SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS DIGITAL INPUTS there are available 6 digital inputs to activate the following functions when enabled by the programmed set up e additional time delay related to one or more thresholds e on off thresholds e STATUS function recording of measures on external event e pilot wire fault monitoring only digital input DIG2 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 DISPLAY OF MEASURES the user can select the continuous display of a measured differential current or of a stabilizing current primary values or relative values all the measured currents can be transmitted to an external controller through the RS485 port EVENTS information related to the last 8 events TRIP or STATUS are recorded in the EEPROM memory Information includes
13. to terminate the current wiring using plug terminals Minimum suggested wire cross section 1 5 mm 31 SEB Divisione Elettronica e Sistemi INSTALLATION CB1 44 mio ce Sca CB1 42 rn B1 A1 K ll 6 ld B1 A2 LL Gen I gt Cai k NH cB1 39 3 Ra E A gt CB1 40 CB1 B1 ie 8 ld is ll CB1 32 CB1 B2 lt 66130 12 CB2 B1 i E 6 II WH STET CB2 B2 le Ria CB1 43 Vv u Vv f 4 I RENS Ls gt 13 CB1 C1 i gt Lesrs gt 8 se I CBI C2 S Fus K ee D k SY cBr24 Come IE DIG 1 Pi DIM SY cero gt ao gt ED cBi40 E A ma Sears gt lt cers Hi T Hao cL R5 66 gt cBzrs TEsT x i R S T cee ar SH 08137 gt 12 4 8 Com lt cz4 E LINE H R DIGS gt cor gt S 0825 lt lt cons gt LINEL cera gt 8 i Lsmrg 5 I I lo io 9 CB1 D1 ri KN Id 1_cB147 CB1 D2 Uaux Fig 3 esas gt 9 i gt CB1 48_ gt lo CB2 D1 f I T l gt gt CB1 45 gt
14. 5 MR VERSION mini rack installation e mini rack e protection relay module IDG8N with 2 rear sockets e transparent front panel with push buttons e transparent front panel without push buttons e blister with items 1 2 3 4 5 Sacchetto BLISTER 1 n 8 screws to fix wire terminals of current circuits 2 n 4 screws to fix the relay rear socket on the 19 rack 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 terminals current 5 n 8 growers to be used to fix wire terminals current 6 items to fix the brackets for flush mounting not applicable The knobs to fix the transparent front panel must be screwed through the panel the front panel itself the operation will create a screw thread in the plastic material and the knobs will never be missed 30 SEB Divisione Elettronica e Sistemi INSTALLATION 6 2 Cabling INSERTIONS Generator differential ANSI 87G figure 4 Earth fault differential ANSI 64Ss figure 5 Current circuits It is suggested to terminate the current wirings using eyelet terminals Minimum suggested wire cross section 2 5 mm Other circuits output relays etc It is suggested
15. CB2 D2 lt gt gt cB146 gt Insertion ANSI 87G fig 4 32 INSTALLATION SEB Divisione Elettronica e Sistemi R 12 4 s2 8 s1 5 9 T k I ll 3 CB2 D2 i S P1 Pa R 12 4 8 5 j amp a DDS e 4 lt K ll 8 CB1 D2 CB2 D1 Ol sj EN ll CB2 D2 lt l CB1 D2 k 9 4 9 12 rm ll k Insertion ANSI 64Ss fig 5 33 SEB Divisione Elettronica e Sistemi INSTALLATION CB2 CB1 REAR VIEW Figure 6 34 SEB Divisione Elettronica e Sistemi INSTALLATION Dimensioni meccaniche Case outlines Dima montaggio da incasso Flush mounting panel cut out Dimensioni frontali mini rack per incasso Mini rack front sizes flush mo
16. IBILITY THRESHOLD SET UP programmable n nn threshold level expressed in terms of In 0 04 1 00 E3 INSENSIBILITY THRESHOLD IN PRIMARY VALUE non programmable XXXXXX threshold level expressed in Amperes primary values NON PROGRAMMABLE as function of ref D2 and E2 set up Example E1 E2 E3 Id Ib Ib ON 0 20 In 60 A E4 E5 E6 EPS IP gt gt ccc IP gt gt DI Pl xx5 P2 xxx nn nn In E4 SLOPE OF THE FIRST PERCENTAGE BRANCH programmable Slope of the first percentage branch expressed in terms of 96 XX slope value of the first percentage branch 0 50 E5 ON OFF SECOND PERCENTAGE BRANCH programmable ccc ON enabled branch OFF disabled branch XXX slope value of the second percentage branch 0 100 96 19 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING E6 BASE POINT OF THE SECOND PERCENTAGE BRANCH WITH Id In AXIS programmabile Value of the intersection of the straight line P2 with the Id In axis see fig A nn nn intersection value expressed in terms of differential current 0 00 20 00 In E4 E5 E6 IP IP gt gt ON IP gt gt DI Pl 20 P2 55 3 50 In E7 TIME DELAY SET UP programmable E7 TI eeeee Z2Z 22 S Example Set up of time delay to the activation TRIP of the programmed output relays when the measured current exceeds the threshold level zz zz time delay programmable from 00 02 to 99 99 s Example TI INDIP 00 04 s E8 E9 ADDIT
17. IONAL TIME DELAY SET UP E8 programmable E9 non programmable E8 E9 TA Id TA Id XX XX S GOGGGGGG The selection allows to program an additional time delay TA from 00 00 to 99 99 seconds please note that at least one of the digital inputs should be programmed to activate time delay function ref H1 H6 paragraph 5 8 The additional time delay TA is added to the time delay to obtain the output relay trip when the TI TA time expires The display E9 shows the digital input programmed to activate the additional time delay TA on the displayed threshold 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 related to threshold Id DIG1 digital input DIG1 activates the TA delay on threshold Id gt DIG2 digital input DIG2 activates the TA delay on threshold Id gt DIG3 digital input DIG3 activates the TA delay on threshold Id 20 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING DIG4 digital input DIG4 activates the TA delay on threshold ld DIGS digital input DIGS activates the TA delay on threshold Id DIG6 digital input DIGG activates the TA delay on threshold Id More than one digital input can activate the same additional time delay e g DIG 1 3 5 6 2 Second differential thresholds ld gt gt Ido gt gt fig 2 The information and set ups related to threshold Id gt gt in th
18. NOTE The protection relay continues 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 protection set up If the new set up is not confirmed within 5 minutes from the last pressed push button the protection relay visualizes again the previous set up the parameters set up that the protection relay is still using SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 4 2 Howto 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 the arrow push buttons and when two parameters are modifiable the push button allows to 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 th
19. S9 79 9 9 Lo S S Zz zz V AAAAA UOI XX X 299 OPT VI lt lt OPI WL dIGNI IL OPT OPT OPT 2020022000 S S grga uu u XXX OZd XX V AAAA XXX DID lt OPI VL OPI VI dIGQNI IL OTA lt lt OdI ooo odI lt odI lt oqdI lt OPI 900909009 uu Gu V AAAAA UI XX XX DT VL DPT VL dIGNI IL lt lt PI lt lt DI lt lt PI 94 Sd vd d cd ld 0009990900 S DISP Si Zz 22 ur uu uu XXX Zd XX Td V AAAA Up Ser 299 40 L3S PI VL PI VL dIGNI IL Id dI 999 dI dI qr dr PI IOHSWHHIL 64 83 23 94 SI va ed ba S XX XX u AST 29999999 Y 229209 22229 vC SANTVA IOUd 1L LSVHLNOO AVTdSId wrzd wrzd ur UI dQ LHS 90 ia en614 tu044 14 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi 6 1 ss wu
20. TI TA time expires 21 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The display E9 shows the digital input programmed to activate the additional time delay TA on the displayed threshold 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 related to threshold Id DIG1 digital input DIG1 activates the TA delay on threshold Id DIG2 digital input DIG2 activates the TA delay on threshold Id DIG3 digital input DIG3 activates the TA delay on threshold Id DIG4 digital input DIG4 activates the TA delay on threshold Id gt DIG5 digital input DIGS activates the TA delay on threshold Id DIG6 digital input DIG6 activates the TA delay on threshold Id gt More than one digital input can activate the same additional time delay e g DIG 1 3 Example F1 F2 F3 Td Td gt gt Td gt gt ON 6 00 In 1200 A F4 F5 F6 TI INDIP TA Id gt gt TA Id gt gt 00 02 s 00 00 s DISABIL 5 7 Output relays programming fig 2 The session allows to program the activation of the output relays R1 R2 R3 or R4 on START or TRIP conditions for each threshold In the programming session are displayed only the active thresholds depending on selections in the THRESHOLD SET UP paragraph paragraph 5 6 Equivalent information and set up related to relay R1 is available for the relays R2 R3 and R4 just changing the relay identification
21. The list of the selectable currents depends on the programmed FUNCTION SELECTION ref C1 the current is displayed in primary values the value depends on D2 and D3 set ups and relative value in terms of In or lon Selection examples DISPLAY DISPLAY DISPLAY ANSI Idi Ido D5 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 D6 OUTPUT RELAY MINIMUM ACTIVATION TIME programmabile T DROP XX XX S The minimum output relay activation time can be programmed the setting applies to all the output relays 18 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The activation time is programmable from 00 10 to 99 99 seconds T DROP 01 00 s 5 6 Thresholds and time delays set up fig 2 5 6 1 Percentage biased differential thresholds ld gt Ido fig 2 The information and set ups related to threshold Id in the following points are effective for the threshold Ido if not specifically written just taking into consideration the change of the threshold identification Example E1 E2 E3 Id Ib Ib CEC n nn In XXXXX A E1 ON OFF PERCENTAGE BIASED DIFFERENTIAL THRESHOLD programmable ccc ON enabled threshold OFF disabled threshold available but not active E2 INSENS
22. aaa 87G 64SS 87G 64SS SET UP NOMINAL Nominal data VALUES FIG 2 THRESHOL THRESHOLDS set up SET UP FIG 2 RELAY _ OUTPUT RELAYS set up FUNCTION FIG 2 DIGITAL DIGITAL INPUT set up INPUT 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 18 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi OL 6 90ud WHIANOO Lr XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 959 9DId 959 S9I0 99 79I0 99 99 29 T9I0 IVLISIG 9H SH YH H H LH 299 WAON 999 WAON u 922 WHON XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX oo NYON NOILONOAA ISHL lt lt OPI Tu lt ODI PT Tu PI Tu SAVIHI 99
23. cannot be used as transformer differential protection relay and for this application please refer to IDT8N model transformer differential protection relay Id differential current vectorial difference between the input current and the output current of the protected object tel Three differential current values are computed one for each phase the differential thresholds are verified for each differential current la stabilizing current half sum of the vectors of the input and output currents of the protected object used to stabilize the protection relay operations in presence of faults external to the protected zone ES 2 SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS When short circuit currents due to faults external to the protected zone are flowing through the protected object it is possible to have measured differential currents due to current transformer errors or saturation The stabilizing current is used to stabilize the protection relay operation in these conditions Differential thresholds Two differential thresholds are available Id percentage biased differential threshold Id gt gt second differential threshold absolute value The relay operates when threshold Id gt gt the following disequation is verified gt Id gt gt threshold Id ALL the following disequations are verified ld Ib gt pl Id gt P2 DI where lld module
24. d OF Id gt gt threshold Id gt gt disabled OF Ido threshold Ido disabled OF Ido threshold ldo gt gt disabled OF IP gt gt second percentage slope disabled threshold ld gt gt OF IPo gt gt second percentage slope disabled threshold ldo gt gt OF ALL all thresholds disabled STATUS activation of status function see paragraph 1 H2 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 M1 plus the following MONITOR activation of pilot wire monitor function H3 H6 DIGITAL INPUT DIG3 DIG6 SET UP programmable DIG3 cc XXXXXXXX Programming of the function related to digital input channel from 3 DIG3 to 6 DIG6 the selections available are the same as presented for DIG1 ref H1 24 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 9 Parameter values visualization fig 3 L1 L2 L3 L4 L5 L6 THRESHOLDS STATUS L1 L2 L3 Id Id IP gt gt Status status status L4 L5 L6 Ido gt Ido gt gt IPo gt gt status status status The actual status of each threshold is displayed For each threshold are displayed the threshold identification ld gt Id gt gt etc and the threshold status the status can show one of the following values ON active threshold OFF disabled threshold programmed OFF at ref E1 E5 F1 OFF_DIG threshold pro
25. ds only time definite threshold b ON OFF threshold STATUS function recording of measures on external command d pilot wire fault monitoring only DIG2 monitors DIG1 When function a is programmed a message is displayed at ref E6 F6 and G6 in paragraph 5 6 When the function of more than one digital input refers to a threshold the priority will be the following a OF selection threshold disabled has the priority on TA function additional time delay 23 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING b the ALL selection ALL the thresholds has the priority on single threshold selection H1 DIGITAL INPUT DIG1 SET UP programmable DITG1 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 only the active threshold are presented NONE no functions active related to digital input DIG1 TA Id additional time delay on the threshold Id TA Id gt gt additional time delay on the threshold Id gt gt TA Ido additional time delay on the threshold Ido TA Ido gt gt additional time delay on the threshold Ido gt gt TA ALL additional time delay on all thresholds OF Id threshold Id disable
26. e following points are effective for the threshold Ido gt gt if not specifically written just taking into consideration the change of the threshold identification F1 F2 F3 Id gt gt Id gt gt Id gt gt CCE nn nn In XXXXX F4 F5 F6 TI INDIP Id gt gt TA Id gt gt ZZ ZZ S8 XX XX S CCCCCCCC F1 ON OFF PHASE OVERCURRENT THRESHOLD programmable CCC ON enabled threshold OFF disabled threshold available but not active F2 THRESHOLD LEVEL SET UP programmable nn nn threshold level ld gt gt expressed in terms of In 0 10 20 00 n nn threshold level Ido gt gt expressed in terms of In 0 10 2 00 F3 THRESHOLD LEVEL IN PRIMARY VALUE non programmable XXXXXX threshold level expressed in amperes primary values NON PROGRAMMABLE as function of ref D2 and D3 set up F4 TIME DELAY SET UP programmable Set up of time delay to the activation TRIP of the programmed output relays when the measured current exceeds the threshold level zz zz time delay programmable from 00 02 to 99 99 s F5 F6 ADDITIONAL TIME DELAY SET UP programmable F5 programmable F6 non programmable The selection allows to program an additional time delay TA from 00 00 to 99 99 seconds please note that at least one of the digital inputs should be programmed to activate time delay function ref H1 H6 paragraph 5 8 The additional time delay TA is added to the time delay TI to obtain the output relay trip when the
27. e parameter stops to blink NOTE ifa 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 protection relays returns to the standard condition e reset of glowing LEDs e drop off of tripped relays 10 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST e reset of any parameter changed but not confirmed parameters are shown as confirmed at the end of the last programming session e display on STANDARD MODE Fig 1 ref A1 par 5 1 44 Test of output relays When the output relays test is selected Fig 2 ref G6 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 activated 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 pr
28. erations The output contacts of R3 and R4 relays can be configured as signaling or 37 SEB Divisione Elettronica e Sistemi TABLE 8 TABLE Table A Settings Insensibility threshold 0 04 1 00 In Slope of the first percentage branch 0 50 Slope of the second percentage branch 0 100 96 Base point of the second branch 0 00 20 00 In Second differential threshold 0 10 20 00 In Insensibility threshold 0 02 1 00 lon 0 01 lon Slope of the first percentage branch 0 50 90 1 Slope of the second percentage branch 0 100 96 1 Base point of the second branch 0 00 2 00 lon 0 01 lon Second differential threshold 0 10 2 00 lon 0 01 lon Dems Seng 38 39 40 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
29. essage NONE is displayed R9 R16 MEMORIZED DIFFERENTIAL AND STABILIZING CURRENTS E1 Idi E1 Id2 E1 Id3 yy yy In yy yy In yy yy In y yy Ion El Ial El Ta2 El Ta3 yy yy In yy yy In yy yy In y yy Ion The values of the measured differential and stabilizing currents at the event are displayed the values are expressed as In and lon terms There are presented only the currents measured coherently with the selection at ref C1 paragraph 5 4 d1 d2 d3 do a1 a2 a3 ao differential currents stabilizing currents R17 R22 DIGITAL INPUTS STATUS ON EVENT El El E DIGI vv DIG2 vv DIG3 vv El El El DIG4 vv DIG5 vv DIG6 vv 28 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 R23 R24 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 11 Trips counters fig 3 In this section are displayed the total and partial counters of the output relay activations on TRIP conditions for each thresholds 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 and time of the last confirmed programming session are not modifiable or resettable the information related to the last programming session are
30. essed 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 11 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 protection relay status NORMAL FUCTIONING During this state the following information can be visualized as defined by set up Protection function ANSI code the display shows the ANSI codes of the main functions 87G 64Ss Measured current and parameters the display shows one of the differential currents d1 d2 d3 do or the stabilizing currents a1 a2 a3 ao the information to be visualized is selected by operator ref D4 The currents are visualized as primary value and relative value In or lon if the selection of the current to be visualized refers to a current not measured depending on FUCTION SELECTION no values are presented ON TRIP CONDITION When a trip condition occurs the protection relay visualizes the TRIP message that includes the threshold
31. grammed active but momentary disabled by a digital input actual status ref H1 H6 paragraph 5 8 Examples Id gt Td2 gt gt IP gt gt IPo gt gt ON ON OFF DIG OFF 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 R1 ON R3 OFF R2 OFF R4 ON N1 N2 N3 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 Example 25 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING N1 N2 N3 DTG1 LO DIG3 LO DIG5 LO DIG2 HI DIG4 HI DIG6 LO P1 P2 P3 P4 P5 P6 P7 P8 MEASUREMENT DISPLAY The actual values of the differential and stabilizing currents are displayed the currents related to disabled thresholds are not displayed For each current the following information is displayed e currents identification e actual values expressed as In or lon e actual primary values expressed as amperes P1 P2 P3 P4 yyyyy A yyyyy A yyyyy A yyyyy A P5 P6 P7 P8 yyyyy A yyyyy A yyyyy A yyyyy A d1 d2 d3 do differential currents a1 a2 a3 ao stab
32. ilizing currents xx xx current values as In or lon yyyyy actual primary value of the currents expressed as amperes 5 10 Events fig 3 On the display are shown the memorized information related to the last 8 TRIP or STATUS events The 8 events are recorded and identified with a progressive number from 1 to 8 the more recent event shows a lower number R1 EVENT NUMBER El CCCCCCCC The index E1 E2 E8 identifies the memorized event The parameter cccccccc gives information on the kind of event and it can show one of the following values NONE no event memorized Id event on trip threshold Id Id gt gt event on trip threshold ld gt gt Ido event on trip threshold Ido 26 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING event on trip threshold ldo gt gt 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 R2 INSENBITILITY THRESHOLD It is shown the insensitivity threshold value This information is not presented on STATUS event R2 El Ib 0 20 In R3 PERCENTAGE BIASED DIFFERENTIAL THRESHOLD PARAMETERS It is shown the parameters related to the percentage biased differential threshold This information is not presented on STATUS event R3 El IP Pl xXx
33. od nn Models A5 nominal earth current 5 A A1 nominal earth current 1 A The nominal phase current is programmable 1 or 5 A B2 B3 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 The xxxx parameter is selectable between the followings 300 600 1200 2400 4800 9600 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 relay when two or more protection relays are linked on the same serial line B5 RELAY SERIAL NUMBER not programmable SER NR 0012345 16 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING B6 SOFTWARE REVISION LEVEL not programmable SW REV ZZ ZZ B7 TIME DATE programmable dd mm yy hh mm ss Time 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 4 Function selection fig 1 C1 FUNCTION SELECTION programmable
34. related to the trip the displayed messages are as the following TRIP TRIP TRIP TRIP Id Id Ido Ido gt gt 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 GGGGGGGG F PILOT Detected fault condition on pilot wire the function related to DIG1 digital input is suspended The string eeeeeeee can be 12 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING HARDWARE 5 2 Corrective action verify pilot wire short or open circuit Detected fault condition on hardware or software resources of the protection relay all functions are suspended Corrective action replace the protection relay and contact SEB post sales service Visualization structure Al ANSI Alternative FAIL TRIP D1 x xx 87G 6455 Displays eeeeeeee Id XXXXX B1 B2 B3 B4 B5 B6 B7 IDG8N PROTOCOL BAUDRATE NR RELAY SER NR SW REV dd mm yy mod yA nnnn XXX ZZZZZZZZ ZZ ZZ hh mm ss C1 FUNCTION aaaaa
35. rotection function to generators and motors the operating characteristic reduces the sensibility to currents due to fault conditions outside the protected zone The insertion of the protection relay is presented in figure 4 The CT s installed on the star point side 1 and on busbars side I must have the same ratios and characteristics SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS 1 3 Differential earth fault protection ANSI 64Ss The protection relay IDG8N has been designed to provide differential protection against earth faults in the following applications e selective protection against stator earth faults restricted earth fault protection for generators with earthed neutral point during operating with other generators on the same busbars e selective protection against earth fault on star connected windings of a transformer e earth fault protection on reactors The insertion of the protection relay is presented in figure 5 if connection to busbars is not carried out by cable it can be used an Holmgreen connection of 3 CT s All the CT s must have the same characteristics 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 gt right arrow down arrow programming session activation or parameter confirmation change or increment of the selec
36. ted parameter RESET VISUALIZATION OF PARAMETERS reset of the protection relay rif par 4 3 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 shown 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 SEB Divisione Elettronica e Sistemi FRONT PANEL LED SIGNALLINGS 3 FRONT PANEL LED SIGNALLINGS POWER verde FAIL red REMOTE red ld red Id gt gt red ldo red auxiliary supply available amp fault condition detected by SELF DIAGNOSIS software or by PILOT WIRE FAULT MONITORING function amp communication session active on RS485 port amp trip condition on Id threshold ANSI 870 amp trip condition on Id gt gt threshold ANSI 87G amp trip condition on Ido or Ido gt gt thresholds ANSI 6455 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 10 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 4 PROGRAMMING AND TEST The protection relay is easily programmable
37. the functions listed in the table below Three poles percentage biased differential protection for generators or motors 87G Selective earth fault protection percentage biased differential All the set up and measured parameters can be visualized on the front panel display and transmitted on the RS485 communication serial port THRESHOLDS the following thresholds are available 1 differential percentage biased threshold two branches 1 absolute value differential threshold 1 earth fault differential percentage biased threshold two branches 1 absolute value earth fault differential threshold The tripping characteristic for each threshold is presented in figure A The available settings for each threshold are listed in Table A TRIP DELAYS All the thresholds are time definite and each threshold time delay can be combined with an additional time delay TA the additional time delay is added to time delay The additional time delay activation is controlled by the digital inputs The available settings for each timers are listed in Table A OUTPUT RELAYS the IDG8N controls 4 output relays named R1 R2 R3 and 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 current or parameter exceeds the programmed threshold value TRIP activation of the output relay when the programmed
38. unting 198 2 x 177 4U mm a l L L L 101 5 0 3 35 N 4 fori 26 3 Raggio max 7 162 0 1 SEB Divisione Elettronica e Sistemi INSTALLATION 6 3 Relays R3 and R4 Signaling Command set up The protection relay is supplied with R3 and R4 relays configured as SIGNALING RELAYS with 2 change over output contacts with breaking capability equals to 0 2 A at 110 Vdc 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 digital protection relay IDG84N presents an insulated serial interface RS485 half duplex that allow the multi drop connection up to 31 protection units There are available two selectable communication protocols ref B2 paragraph 5 3 When the STANDARD SEB communication protocol is selected the transmission speed is automatically selected between 300 to 9600 bauds and the protocol is ASCII HEX When the MODBUS communication protocol is selected the transmission speed can be programmed between 300 to 9600 bauds ref B3 par 5 3 It is suggested to use a shielded twisted pair AWG22 terminal 19 not connected internally can be used for shields connections 120 Ohm CONTROLLORE PROTEZ 1 PROTEZ 2 PROTEZ 3
39. 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 1 S8 TRIP COUNTERS 1 92 Id Id bi ccce I Gece Display of the partial P and total T counters of the TRIP condition related to each threshold When the value exceed 9999 the counter starts again from 0000 The counters are identified by the threshold name ld gt ld gt gt Ido Ido gt gt there are presented only the counters related to the active thresholds The partial counters are modifiable in the range from 0000 to 9999 following the standard set up procedure paragraph 4 2 S9 S11 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 29 SEB Divisione Elettronica e Sistemi INSTALLATION 6 INSTALLATION 6 1 Supplied kit RK VERSION 19 rack installation the proper rack is supplied by SEB protection relay module IDG8N with 2 rear sockets e transparent front panel with push buttons e transparent front panel without push buttons e blister with items 1 2 3 4
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