USER MANUAL - seb barlassina
Contents
1. 18 5 5 1 Under and over frequency thresholds fig 2 18 5 5 2 Overfluxing thresholds fig 2 20 5 5 3 Frequency rate of change thresholds fig 2 22 5 5 4 Voltage vector shift thresholds fig 2 23 5 5 5 Undervoltage threshold fig 2 23 56 Output relays programming fig 9 cerca 24 5 7 Digital inputs function programming fig 3 ra 25 5 8 Parameter values visualization fig 3 27 5 9 dex ukupa ca SU sm aT MD M 28 5 10 TripS counters fig Delon lena nolan 30 INSTALLATION a Su ayu NRN EC e Exe hee EHE EE 32 Dl SUPPORT 32 ella SA ED D M ii in iii 33 63 Relays R3 and R4 Signaling Command 36 6 4 RS485 serial communication port 36 7 TIME DEPENDENT CURVES IEC 255 4 nennen 38 8 TECHNICAL DATA 2 lalla la aaa 39 9 TABLE 65i oO Da ND M LI CO NM 40 Informati2. Figure 1 12 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING From FIGURE 1 C1 C2 C3 C4 C5 SET UP NOMINAL Un FREO U prim DISPLAY CONTRAST VALUES xxx xx V XX Hz yyyyyy V eeeeeeee LEV n DIF D2F D3F D4F D5F D6F THRESHOL F gt F gt F gt TI INDIP TA F gt TA F gt SET UP ccc XX XX Hz NFILT n 22 77 5 5 gt gt gt gt TI INDIP gt gt gt gt Hz NFILT n 22 722 8 5 F lt F lt lt INDIP lt F lt Hz NFILT n 22 22 5 S CCCCCCCC F F F TI INDIP TA F TA F ccc XX XX Hz NFILT n 22 22 5 yy yy 5 D1M D2M D3M D4M D5M FL gt FL gt V Hz TI kkkkk TA FL TA FL ccc X XX 2222228 yy yy 5 PECECORG FL gt gt FL gt gt V Hz TI INDIP TA FL gt gt TA FL gt gt CCC Xx XX 22 22 5 yy yy S D1D D2D D3D DF DF TI INDIP ccc x xxHz s ZZ ZZ ds DF gt gt DF gt gt TI INDIP ccc x xxHz s ZZ 728 D1S D
3. 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 e R5outputrelay 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 9 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 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 opt
4. SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 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 Nominal values selection 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 V C2 NOMINAL FREQUENCY SELECTION programmable FREQ xx Hz The nominal frequency value is selectable between the followings 50 60 C3 PRIMARY VTs LINE VOLTAGE programmable U prim XXXXXX V Primary voltage value of the installed line VTs the value is programmable from 000001 to 999999 V C4 STANDARD DISPLAY SELECTION programmable DISPLAY It allows to select the standard displayed information ref 1 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 FREQ displays measured frequency 17 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING FLUX displays measured flux 0 displays measured voltage The
5. 20 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING INDIP independent time delay DIP A time delay as curve A IEC 255 4 inverse time DIP B time delay as curve B IEC 255 4 very inverse time DIP C time delay as curve C IEC 255 4 extremely inverse time For the FL gt gt threshold the TI parameter is fixed as INDIP independent time Parameter xx xx Time independent time delay seconds to activate the programmed output relays the output relay trips when the measured voltage exceeds the threshold level for at least xx xx seconds programmable from 00 02 to 99 99 s Time dependent value of the parameter K see formulas paragraph 1 2 TI DIP B TI DIP A TI INDIP 02 50 K 10 00 K 03 25 s NOTE the index K or s is shown coherently to the selected time delay characteristic when the push button ENTER is pressed D4M ADDITIONAL TIME DELAY SET UP programmable The selection is displayed only when a TIME INDEPENDENT characteristic has been selected TI INDIP at ref D4M when TIME DEPENDENT characteristic has been programmed the selection will not be displayed TA FL gt XX XX S The additional time delay TA is programmable 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 G1 G2 G3 paragraph 5 7 D5M DIGITAL INPUT ACTIVE ON THRESHOLD not programmable TA FL eeeeeee It shows the digital input pr
6. FREQ YS toe FLUX Hz V V Hz 5 9 Events fig 4 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 Q1 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 F gt event on trip threshold F gt F gt gt event on trip threshold F gt gt F lt event on trip threshold F lt F lt lt event on trip threshold F lt lt FL gt event on trip threshold FL gt FL gt gt event on trip threshold FL gt gt DF gt event on trip threshold DF gt DF gt gt event on trip threshold DF gt gt DA gt event on trip threshold DA gt DA gt event on trip threshold DA gt U lt event on trip threshold U lt 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 TRIP THRESHOLD It is shown the threshold that caused the TRIP condition and its value This information is not presented on STATUS event 28 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMI
7. Optional Auxiliary supply 57 73 63 50 72 16 100 110 V 125 190 220 230 380 400 V 2 Un 2 Un 50 60 Hz 1 999999 V 0 3 VA phase 35 75 Hz 4 1 5 250 V change over 0 5 A 0 2A gt 106 3 as Uaux 2mA RS 485 half duplex Mod BUS ASCII 300 9600 selectable fibre optic module Range 24 320 Vdc 2096 48 230 Vac 20 Frequency Vac 47 63Hz Burdens min max 5 10W Environmental conditions Operating 10 60 C Transport and storage 25 80 C Relative humidity without condensation lt 95 Protection degree for flush mounting IP 52 optional IP54 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 signaling or tripping relays SEB Divisione Elettronica e Sistemi TABLE 9 TABLE Table A Settings Over frequency F gt F gt gt 40 00 70 00 Hz 0 01 Hz Under frequency F lt F lt lt 40 00 70 00 Hz 0 01 Hz NFILT number of cycles 2 9n im Note 1 59 81 Overfluxing FL gt FL gt gt 0 50 9 00 V Hz 0 01 V Hz i rate of change df dt DF gt DF gt gt 0 10 9 95 Hz s 0 05 Hz s 7 vector shift DA gt DA gt Note 2 U lt Under voltage threshold to 0 20 1 00 Un relay inhibition Note 2 All thresholds excepted 0 045 22238299 Characteristic curves Depen
8. Sed DIVISIONE ELETTRONICA E SISTEMI HAR1N FREQUENCY AND OVERFLUXING DIGITAL MULTIFUNCTION RELAY USER MANUAL P500D812 August 2004 SEB Divisione Elettronica e Sistemi INDEX INDEX 1 GENERAL CHARACTERISTICS E 1 1 4 X Under and Over frequency thresholds ANSI 81 3 1 2 Overfluxing thresholds ANSI 59 81 4 13 frequency rate of change df dt max voltage vector shift A 4 1 4 Undervoltage threshold ANSI 27 2 5 2 WIRONITTANEE at tate at siate attese sole 6 3 FRONT PANEL LED SIGNALLING eh ees ee etos 7 4 PROGRAMMING AND TEST tiara 8 41 How to program the protection 8 4 2 Howto modify a visualized parameter rss 9 43 Reset umala dl cm MUI cp ei ee le 9 44 Testor output relays une cen co cate ees 10 5 DISPLAY AND PROGRAMMING Een CER HERE 11 5 1 Standard display o esosoconenuegoenp esM ME 11 52 Visualization structure J III SITI 12 5 3 Address and Time fig 1 a ede a ecd dei d A eid 16 54 Nominal values selection fig 1 eee eee 17 5 5 Thresholds and time delays
9. 24572 S MM MM Uu uu eeeeeecece bep S ZH Ta ZH A TH ZH I4 DIO TH 3OL L TH TH TH TH SINHAH 60 80 10 90 so o co LO FHYNO A uo 15 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 3 Address and Time fig 1 B1 RELAY MODEL not programmabile HARIN mod 1 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 XXXX 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 B6 SOFTWARE REVISION LEVEL not programmable SW REV ZZ ZZ 16
10. measurement of the frequency is below the threshold value in the last NFILT periods The value of the NFILT counter is independently programmable for each threshold The total activation time of the under and over frequency thresholds will be NFILT periods programmed time delay The available settings for each threshold are listed in Table A 1 2 Overfluxing thresholds ANSI 59 81 The overfluxing function protects the step up transformers in generation plants by the effect of excessive flux density proportional to the V f ratio that can cause damages due to the increase in the iron losses Two overfluxing thresholds FL gt FL gt gt are available and independently programmable the time delay related to the threshold FL can be programmed as definite time or dependent time in compliance with IEC 255 4 standard ref par 7 The available settings for each threshold are listed in Table A 1 3 Max frequency rate of change df dt and max voltage vector shift AO The frequency rate of change and the voltage vector shift functions allow the rapid disconnection of the generator from local grid in case of mains failure avoiding the risk at the resumption of the main grid when auto reclosing functions are provided on HV and MV lines of the main grid of finding the generator in asynchronous phase position with short circuit type currents and risk of damages As the shortest reclosing period takes place in about 300 m
11. 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 HAR1N presents an insulated serial interface RS485 half duplex that allow the multi drop connection up to 31 protection units There are available 2 selectable communication protocols ref B2 paragraph 5 3 When the MODBUS communication protocol is selected the transmission speed can be programmed between 300 to 9600 bauds ref B3 par 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 It is suggested to use a shielded twisted pair AWG22 terminal 19 not connected internally can be used for shields connections To integrate the protection relay in control systems the documentation related to the protocol is freely available on request 36 SEB Divisione Elettronica e Sistemi INSTALLATION 120 Ohm 120 Ohm 1 CONTROLLORE PROTEZ 1 PROTEZ 2 PROTEZ 3 It is suggested to terminate the serial line with a resistance 120 O 1 4 W 37 SEB Divisione Elettronica e Sistemi TIME DEPENDEN
12. 2S DA gt DA gt ccc xx deg DA DA deg D1U D2U D3U U lt U lt U lt ON x xx Un hhhhh V To FIGURE 3 Figure 2 13 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi nBid AYNSIs OL ZH NZZ Z A ZH AA AA SOLVIS XATA XX XX Oud SHYNSVaN d AA 2010 SOLWLS AA 9IQ AA LN pH ZI SOLVIS 999 IH SAVIHN ZN LN XXXXXXXX gt N XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX SNIVIS SNIVIS SINHA 8 lt Vq lt Vd lt lt 4d I4 I4 gt gt gt a lt lt a 4d 5 INNDIS SHYNSVaN 011 61 81 91 S1 v1 1 0044 NUIANOO Ir XXXXXXXX XXXXXXXX XXXXXXXX LOANI 9IQ INLISIG 9 co XXX NYO XXX WHO WAO cu AKKKKKKA 222 TW 41541 TY gt N Ta tld ld 214 XXXXXXXX XXX
13. D PROGRAMMING The contents and the structure of the displayed messages are shown in figures 1 2 3 and 4 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 FUNCTIONING During this state the following information can be visualized as defined by set up e Protection function ANSI code the display shows the ANSI codes of the main selectable functions 81 DF DA 59 81 e Measured parameters the display shows one of the measures frequency voltage or flux The measure is visualized as primary value NOTE for the flux measurement only the secondary voltage of the VT is taken into consideration programmed function ref C1 par 5 2 ON TRIP CONDITION When a trip condition occurs the protection relay visualizes the TRIP message that includes the threshold related to the trip the displayed messages are as the following TRIP TRIP TRIP TRIP F gt FL gt gt F lt lt DF The information of the trip as well the glowing of the related LED s is displayed until the RESET push button is pressed If a new trip condition occurs the displayed information will be updated information related to previou
14. NG Examples E4 U lt E2 FL gt gt E5 DF gt gt El F gt 0 50 Un 2 50V Hz 1 05Hz s 50 05 Hz Q3 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 output relays have been activated relays programmed to TRIP on the threshold the following message will be displayed El RELAY NONE El T Tot WWW WW S It is shown the total delay to the TRIP of the output relays from the overflux 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 Examples Q4 TOTAL TIME DELAY ON TRIP 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 Q5 DIGITAL CHANNELS RELATED TO MEMORIZED EVENT Fl DIG Tee 23 2 74 The list of the digital inputs related to the memorized event is displayed STATUS function command or additional time TA enabled ref par 5 7 If no digital inputs were activated the message NONE is displayed 29 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Q6 Q7 Q8 Q9 Q10 MEMORIZED MEASURES ON EVENT Q6 Q7 Q8 Q9 Q10 YY YY Y YY Y YY yy
15. 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 DIGITAL INPUTS there are available 3 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 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 parameter such as frequency flux V f and voltage all the measured currents and computed parameters 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 the threshold set up and activated relays TRIP event only the measured parameters the digital input status date and time of the event 2 SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS
16. T CURVES IEC 255 4 7 TIME DEPENDENT CURVES IEC 255 4 Curva Curve B Curva Curve A 1000 20 15 t SECONDI t SECONDI 0 1 NO van K 001 FL FL Curva Curve C 1000 0 1 FL FL gt 1000 t SECONDI Time dependent characteristic t 0 02s FL E FL gt Curve IEC 255 4 A B C Ki 0 14 13 5 80 a 0 02 1 2 K Parameter 0 01 20 00 s FL FL Ratio between the measured V f and the threshold FL 38 SEB Divisione Elettronica e Sistemi TECHNICAL DATA 8 TECHNICAL DATA Measuring inputs Rated voltage Un programmable Thermal withstand continuously Thermal withstand for 1 s Rated frequency Primary VT s voltage Burden referred to rated value Frequency measurement range Output contact ratings Number of relays note 1 Rated current Rated voltage Contact configuration Breaking capability note 2 tripping relays R1 R2 signalling 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
17. US function recording of measures on external command d pilot wire fault monitoring only DIG2 monitors DIG1 e R1 output relay activation on DIG3 status DIG3 only When function a is programmed a message is displayed at ref D6F and D5M in paragraph 5 5 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 b the ALL selection ALL the thresholds has the priority on single threshold selection 25 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 only the active threshold are presented NONE no functions active related to digital input DIG1 TA F gt additional time delay on the threshold F gt TA F additional time delay on the threshold F gt gt TA F additional time delay on the threshold F TA F additional time delay on the threshold F TA FL additional time delay on the threshold FL TA FL gt gt additional time delay on the threshold FL gt g
18. XX XX S Set up of time delay to the activation TRIP of the programmed output relays when one of the measured phase current exceeds the threshold level Examples XX XX time delay value programmable from 00 02 to 99 99 seconds TI INDIP 02 50 s Set up of time delay to the activation TRIP of the programmed output relays when the measured voltage exceeds the threshold level Example 22 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 5 4 Voltage vector shift thresholds fig 2 The information and set ups related to threshold DA gt in the following points are effective for the threshold DA gt just taking into consideration the change of the threshold identification D1S ON OFF THRESHOLD programmable DA gt CCC DA gt threshold identification DA gt DA gt ccc ON enabled threshold OFF disabled threshold available but not active D2S THRESHOLD LEVEL SET UP programmable DA gt nn deg nn threshold level expressed in degree The available settings for the thresholds are listed in Table A The maximum voltage vector shift thresholds are without time delays about 80 ms from the vector shift event The protection relay does not operate when the voltage vector shift exceeds 45 5 5 5 Undervoltage threshold fig 2 For the functions related to the undervoltage threshold protection relay functions inhibition please refer to paragraph 1 4 D1U ON OFF THRESHOLD pr
19. XXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXX WON NOILONNA lt Ta lt vd TA lt lt dd Ta Ta lt lt Td Ta 14 Ta gt gt 14 gt 4 Iu lt lt 4 TH lt A TA Ta SAVINI 114 014 64 84 2 94 Sd vd z 34914 u014 14 DISPLAY AND PROGRAMMING SEB Divisione Elettronica e Sistemi y nBij3 ss wu yy 1 gd 1 u5d ANIL ddd LOL lt vd lt vd lt 1 1 gd 1 lt lt lt lt lt ad 4d lt lt 114 9 143 ELA 2999 L 4 1 1 4 1 4 1 4 14 14 gt gt 4 gt gt DUI gt A lt lt lt lt a d lt a Saad LNNOO Old 6 8H 93 SY va LU ss uu uu AA AA Z9IG I9IG 22 22 84 84 84 8 8 un 84 ZZ ZZ Z 2272 22722 S MM MM xX C r XX UU UU eeeeeeeE bep gu S ZH 8H ZH A 8 ZH 84 SIG 84 3OL L 8H AV IHH eeee gu 8a LV ss wu yy AA 9IG AA 2914 AA 22 22 TH TH TH TH TH Un TH GLO LO LLO 09 22 2252 2272
20. delay on threshold F gt DIG2 digital input DIG2 activates the TA delay on threshold F gt DIG3 digital input DIG3 activates the TA delay on threshold F gt 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 7 5 5 2 Overfluxing thresholds fig 2 The information and set ups related to threshold FL gt in the following points are effective for the threshold FL gt gt just taking into consideration the change of the threshold identification D1M ON OFF THRESHOLD programmable FL gt Cee FL gt threshold identification FL gt FL gt gt ccc ON enabled threshold OFF disabled threshold available but not active D2M THRESHOLD LEVEL SET UP programmable FL gt CCC n nn threshold level expressed in V Hz Please note that the flux value is computed using the secondary VT s voltage ref C1 par 5 4 The available settings for the thresholds are listed in Table A FL gt V Hz FL gt gt V Hz 2 50 6 50 D3M TIME DELAY SET UP programmabile TI eeeee XX XX S Set up of time delay to the activation TRIP of the programmed output relays when the measured flux exceeds the threshold level Examples Parameter eeeee time delay characteristic For FL threshold the time delay be selected between one of the following
21. dent time as IEC 255 4 A B C FL gt Characteristic constant 0 01 20s 01 All definite time I thresholds Additional delay 0 00 99 99 s NOTE 1 the operating time of ANSI 81 thresholds NFILT periods programmed definite time NOTE 2 TRIP only condition 40 41 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
22. easy definition of the new protection set up SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 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 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 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 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 pa
23. ed 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 SIGNALLING 3 FRONT PANEL LED SIGNALLING POWER green FAIL red REMOTE red F lt F gt red DF DA red FL gt FL gt gt red auxiliary supply available fault condition detected by SELF DIAGNOSIS software or by PILOT WIRE FAULT MONITORING function communication session active on RS485 port trip condition on frequency thresholds F lt F lt lt F gt and F gt gt ANSI 81 trip condition on frequency rate of change DF gt DF gt gt and max voltage vector shift DA gt DA gt thresholds trip condition on overfluxing thresholds FL gt and FL 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 9 SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 4 PROGRAMMING AND TEST The protection relay is easily programmable following the instructions in the next paragraphs 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 41 How to program the protection relay The progra
24. lowing conditions are presented e measured voltage lower then U lt threshold e measured frequency lower than 35 Hz or higher then 75 Hz The undervoltage threshold is always active 0 2 Un minimum set up TRIP DELAYS all the thresholds except the max voltage vector shift DA gt and DA gt thresholds have a programmable definite time delay Tl the time delay related to the threshold FL gt can be programmed as definite time or dependent time in compliance with IEC 255 4 standard The definite time delay related to frequency and overflux thresholds can be combined with an additional time delay TA the additional time delay is added to time delay TI and its activation is controlled by the digital inputs SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS The available settings for each timers are listed in Table A OUTPUT RELAYS the HAR1N 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 the undervoltage threshold U lt and the max voltage vector shift thresholds present only the TRIP or no activation conditions 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 time delay TI or TI TA related to a threshold expires The quiescent state of each single relay
25. mediately modified in the memory the recorded values are immediately resetted without the need of the programming confirmation R1 R20 TRIP COUNTERS R1 R2 F gt F gt T CCC 30 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 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 F gt F gt gt F lt F lt lt etc 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 R21 R23 TOTAL PROGRAMMING SESSIONS AND DATEITIME 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 31 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 protection relay module HAR1N 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 protection relay module HAR1N with rear socket e transparent front panel for rack flush mounting installation e
26. mmable parameters are showed in Figures 1 2 3 and 4 at the following references B2 B5 relay address RS485 and date time C1 C5 nominal values contrast etc D1F D6F thresholds and time delays min and max frequency ANSI 81 D1M D5M thresholds and time delays overfluxing ANSI 59 81 D1D D3D thresholds and time delays frequency rate of change D1S D2S thresholds and time delays voltage vector shift D1U D3U thresholds and time delays undervoltage ANSI 27 F1 F14 output relays functions G1 G3 digital input functions R1 R20 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 3 ref J1 within 5 minutes depressing the push buttons ENTER and up to visualize YES and ENTER again to confirm 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
27. 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 terminals current not used 5 n 8 growers to be used to fix wire terminals current not used 6 items to fix the brackets for flush mounting only with CS version 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 32 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 HAR1N model they 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 diag
28. o 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 Under and Over frequency thresholds ANSI 81 Two under frequency thresholds F lt lt lt and two over frequency thresholds F gt F gt gt are available and independently programmable All the thresholds are definite time The under frequency function with the related frequency rate of change function are specially suitable for the following applications e control of the frequency SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS e graded load shedding in overloaded systems due to loss of generating units or mains failure The operation of the frequency thresholds is based on the frequency measurement in the last NFILT periods a frequency threshold goes in the START condition when the measured frequency exceeds the related threshold value for at least NFILT times to avoid unsuitable trips The threshold drops off when the
29. ogrammable U lt ccc ccc ON enabled threshold OFF disabled threshold available but not active D2U D3U THRESHOLD LEVEL SET UP programmable D2U D3U U lt U lt n nn Un XXXXXX V n nn threshold level expressed in Un XXXXXX threshold level expressed in Volts primary values 23 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The available settings for the thresholds are listed in Table A The undervoltage threshold operates without time delays 5 6 Output relays programming fig 3 The session allows to program the activation of the output relays R1 R2 R3 or R4 on START or TRIP status for each threshold Equivalent information and set up related to relay R1 is available for the relays R2 R3 and R4 just changing the relay identification F1 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 F2 OUTPUT RELAY ACTIVATION ON THRESHOLD F gt programmable R1 F gt XXXXXXXX Programming of the R1 output relay activation START or TRIP on the over frequency F gt threshold Example The parameter xxxxxxxx is selectable as the following START R1 output relay activation on the over frequency thre
30. ogrammed 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 FL gt DIG1 digital input DIG1 activates the TA delay on threshold FL gt DIG2 digital input DIG2 activates the TA delay on threshold FL gt DIG3 digital input DIG3 activates the TA delay on threshold FL gt More than one digital input can activate the same additional time delay e g DIG 1 3 21 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 7 5 5 3 Frequency rate of change thresholds fig 2 The information and set ups related to threshold DF gt in the following points are effective for the threshold DF gt gt just taking into consideration the change of the threshold identification D1D ON OFF THRESHOLD programmable DE gt DF gt threshold identification DF gt DF gt gt ccc ON enabled threshold OFF disabled threshold available but not active D2D THRESHOLD LEVEL SET UP programmable DE n nnHz s n nn threshold level expressed in Hz s The available settings for the thresholds are listed in Table A DF DF 1 00Hz s 5 50Hz s D3D TIME DELAY SET UP programmable TI INDIP
31. om 2 to 9 periods The frequency threshold goes in the START condition when the measured frequency exceeds the related threshold value for at least NFILT times to avoid unsuitable trips The threshold drops off when the measurement of the frequency is below the threshold value in the least NFILT periods The value of the NFILT counter is independently programmable for each threshold D4F TIME DELAY SET UP programmabile TI INDIP XX XX S Set up of time delay to the activation TRIP of the programmed output relays when the measured frequency exceeds the threshold level XX XX time delay value programmable from 00 02 to 99 99 seconds TI INDIP 02 50 s D5F ADDITIONAL TIME DELAY SET UP programmable TA F XX XX S The additional time delay TA is programmable 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 G1 G2 G3 paragraph 5 7 Example D6F DIGITAL INPUT ACTIVE ON THRESHOLD not programmable TA F gt It shows the digital input programmed to activate the additional time delay TA 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 F gt 19 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING DIG1 digital input DIG1 activates the TA
32. on 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 HAR1N belongs to the SIGMA N digital protection line and one or more of the functions listed below are activable Under frequency Over frequency Overfluxing Max frequency rate of change Max voltage vector shift All the functions of the relay are fully programmable by the front panel keyboard or through the RS485 serial interface 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 e 2under frequency thresholds F F e 2 over frequency thresholds F gt F gt gt e 2 overfluxing thresholds FL gt FL gt gt 2 frequency rate of change module thresholds DF gt DF gt gt e 2max voltage vector shift thresholds DA gt DA gt The available settings for each threshold are listed in Table A A programmable undervoltage threshold is provided to inhibit the functions of the relay during the generator start up the threshold operates instantaneously without any time delays The functions of the protection relay are inhibited when the fol
33. par 5 5 OFF_DIG threshold programmed active but momentary disabled by a digital input actual status ref G1 G2 G3 see par 5 7 Examples F gt F gt gt DF gt gt DA gt ON OFF ON OFF DIG NOTE The threshold U is always active ON M1 M2 OUTPUT RELAY STATUS The actual status of each output relay is displayed for each relay the following information is displayed relay identification R1 R2 R3 R4 relay status ON activated OFF non activated Note that ON OFF do not necessary mean energized or de energized see ref F1 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 P2 MEASUREMENT DISPLAY The actual values of the measured parameters are displayed the parameters related to disabled thresholds are not displayed P1 P2 P3 FREQ U n nn FLUX XX XX Hz XXXXXX V x xxV Hz When a parameter is not measurable it is displayed in terms of Example the measured frequency is lower than 35 Hz all the functions of the protection are inhibited 27 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING P1 P2 P3 FREQ U FLUX 35 Hz V V Hz Example the measured voltage is lower than 5 V es 0 05 Un at Un 100 V all the functions of the protection are inhibited P1 P2 P3
34. ram in the next page the voltages measured by the protection relay have the following matching U1 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 33 SEB Divisione Elettronica e Sistemi INSTALLATION 16 0 380V 17 0 125V x 1 18 lt Go dae CT KE 37 ase ____ 3 n 8 FT 1 L J Es sas Ua I GOK ux l R lt lt LINE H S 25 lt amp sm lt LINE L GRE EI det RI R4 ED gt D LO gt gt gt gt s gt ar s gt gt gt Bo HAR1N insertion 34 SEB Divisione Elettronica e Sistemi INSTALLATION 172 9 Dimensioni meccaniche Case outlines N 4 fori 4 6 Dima montaggio da incasso Flush mounting panel cut out Montaggio incassato Flush mounting Dimensioni pannello frontale trasparente Transparent front panel sizes 208 x 89 5 mm 35 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
35. rameter 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 LED s SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST 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 display on STANDARD Fig 1 ref A1 par 5 1 4 4 Test of output relays When the output relays test is selected Fig 3 ref F14 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 VISUALISATION 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 t 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 o 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 10 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 DISPLAY AN
36. ref G1 paragraph 5 7 The available settings for each threshold are listed in Table A 1 4 Undervoltage threshold ANSI 27 A programmable undervoltage threshold is available to inhibit the protection functions during the generator start up An output relay can be activated programmed on the undervoltage threshold The functions of the protection relay are also inhibited when the measured frequency is lower than 35 Hz or higher then 75 Hz the output relay programmed on the undervoltage threshold will TRIP on the above conditions related to frequency The available settings for each threshold are listed in Table A NOTE the threshold is always active minimum set up value 0 2 Un 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 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 Fig 1 2 3 and 4 e when the sealable transparent front panel is installed only the arrow push buttons and the RESET push button are accessible to prevent unauthoriz
37. s the opening of the switch gear should take place in less than 200 ms To detect the mains failure condition within 100 ms the df dt e AG functions are used as the monitoring of the frequency or voltage does not always allow to detect the condition within this time due to the typical evolution of the electrical parameters The typical operating time of the frequency rate of change thresholds START conditions are the following lt 100 ms 70 ms typical with thresholds greater than 1 Hz s lt 300 ms 150 ms typical with thresholds equal or lower then 1 Hz s SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS The operating times are closed as above when the frequency rate of change is close to the programmed thresholds for other conditions the operating time is substantially lower The maximum voltage vector shift thresholds are without time delays about 80 ms from the vector shift event The protection relay does not operate when the voltage vector shift exceeds 45 There are available the following thresholds e independent frequency rate of change thresholds DF gt DF gt gt e independent maximum voltage vector shift thresholds DA gt DA gt During the generator start up the frequency rate of change thresholds and the maximum voltage vector shift thresholds should be inhibited to avoid unsuitable trips of the protection relays the inhibition can be obtained using external commands on digital inputs see
38. s 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 F PILOT Detected fault condition on pilot wire the function related to DIG1 digital input is suspended The string eeeeeeee can be 11 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Corrective action verify pilot wire short or open circuit HARDWARE 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 5 2 Visualization structure A1 81 DF ALTERNATIVE FAIL TRIP FREQ DA 59 81 DISPLAYS eeeeeeee F gt yy yy Hz B1 B2 B3 B4 B5 B6 B7 HARIN PROTOCOL BAUDRATE NR RELAY SER NR SW REV dd mm yy mod XXXXXXXX XXXX XXX 22222222 22222 hh mm ss SET UP NOMINAL Nominal data VALUES FIG 2 THRESHOL THRESHOLDS set up SET UP FIG 2 RELAYS OUTPUT RELAYS set up FUNCTION FIG 3 DIGITAL DIGITAL INPUT set up INPUT FIG 3 J1 CONFIRM PROG MEASURES SIGNAL Display of SIGNALS and amp EVENTS STATUS OUTPUT RELAYS set up FIG 3 EVENTS Display of EVENTS data FIG 4 COUNTERS Display of COUNTERS data FIG 4
39. shold TRIP R1 output relay activation on the over frequency threshold NONE no activation related to the over frequency threshold F3 F12 OUTPUT RELAY ACTIVATION ON THRESHOLDS STATUS F gt gt F lt F FL FL gt gt DF DF gt gt DA gt DA gt U lt programmable Examples F5 F8 F12 R1 lt lt Rl DF R1 U XXXXXXXX XXXXXXXX XXXXXXXX Programming of the R1 output relay activation NONE START TRIP on the thresholds status as threshold F gt ref F2 24 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING NOTE the output relays related to the thresholds DA gt DA gt and U lt do not have the START function F13 OUTPUT RELAY ACTIVATION ON DIGITAL INPUT STATUS programmable Please note that this function is normally used only for special applications where the protection relay HAR1N is supplied by Seb integrated in protection panels R1 RIPET DIG3 zzz Activation of the R1 output relay function to copy the digital input DIG3 status DIG3 HI R1 ON DIG3LO R1 OFF The parameter zzz is selectable as the following ON function enabled OFF function disabled TEST R1 XXXXXXXX 5 7 Digital inputs function programming fig 3 For each digital input one of the following functions are selectable F14 TEST OF OUTPUT RELAY R1 See paragraph 4 4 a additional time delay related to one or more thresholds only time definite threshold b ON OFF threshold c STAT
40. t TA ALL additional time delay on all thresholds OF F gt threshold F gt disabled OF gt gt threshold F gt gt disabled OF F lt threshold F lt disabled OF F lt lt threshold F lt lt disabled OF FL gt threshold FL gt disabled OF FL gt gt threshold FL gt gt disabled OF DF gt threshold DF gt disabled OF DF gt gt threshold DF gt gt disabled OF DA gt threshold DA gt disabled OF DA gt threshold DA gt disabled OF ALL all thresholds disabled STATUS activation of status function see paragraph 1 G2 DIGITAL INPUT DIG2 SET UP programmable DIG2 cc 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 Programming of the function related to digital input channel 3 DIG3 the selections available are the same as presented for DIG1 ref G1 26 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING 5 8 Parameter values visualization fig 3 L1 111 THRESHOLDS STATUS The actual status of each threshold is displayed For each threshold are displayed the threshold identification F gt F 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 D1
41. voltage is displayed in primary values the value depends on C3 set ups Selection examples DISPLAY DISPLAY DISPLAY ANSI FREO U C5 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 5 Thresholds and time delays set up 5 5 1 Under and over frequency thresholds fig 2 The information and set ups related to threshold F gt in the following points are effective for all the thresholds F gt gt F lt and lt lt just taking into consideration the change of the threshold identification D1F ON OFF THRESHOLD programmable F gt CCC F gt threshold identification F gt F gt gt F lt F lt lt ccc ON enabled threshold OFF disabled threshold available but not active D2F THRESHOLD LEVEL SET UP programmable F gt nn nn Hz nn nn threshold level expressed in Hz The available settings for the thresholds are listed in Table A F gt gt gt lt 50 50 Hz 51 50 Hz 49 30 Hz Examples 18 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING D3F NFILT COUNTER SET UP programmable Programming of the number of periods NFILT used by the frequency thresholds START condition and drop off see par 1 1 F gt NFILT n n filter value programmable fr
42. y yy The values of the measured parameters at the event are displayed The measurement of the voltage vector shift Q9 is displayed only for events related to the thresholds DA gt and DA gt on the same events the value of frequency rate of change is not presented Q8 For more information please refer to paragraph 5 8 If the frequency rate of change exceeds the value 30 Hz s the values gt 30 00 Hz s or lt 30 00 Hz s are presented Q11 Q12 Q13 DIGITAL INPUTS STATUS ON EVENT El E E DIGl vv DIG2 vv DIG3 vv The status of the digital inputs at the event are displayed The parameter vv can assume the value HI or LO Q14 Q15 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 10 Trips counters fig 4 In this section are displayed the total and partial counters of the output relay activation 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 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 im
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