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SPAU 130 C Three-phase overvoltage and undervoltage relay

1. Register Recorded information STEP 0 Display of blocking signals and other external control signals The digit at the extreme right indicates the state of the blocking of the undervoltage stage The following states are indicated 0 no blockings 2 tripping of the undervoltage stage blocked The middle digit of the register is always a zero The leftmost green digit indicates the state of the remote reset input if any The following states are indicated 0 remote reset control input not energized 1 remote reset control input energized From this register it is possible to move on to the TEST mode where the starting and tripping signals of the module can be activated one by one For further details see the description General characteristics of C type relay modules A The address code of the measuring relay module required by the serial communi cation system Submenu 1 Selection of the data transfer rate Submenu 2 Bus traffic monitor If the relay module is connected to a data communication system and the communication is operating the counter reading of the bus traffic monitor will be 0 Otherwise the numbers 0 255 are continuously rolling in the counter Submenu 3 Password required for remote setting The password given in the setting mode of asubmenu must always be entered via the serial communication before the settings can be altered remotely When the display is dark the register can be re
2. Maintenance and repair When used under the conditions specified in chapter Technical data the relay requires practically no maintenance The relay includes no parts or components that are sensitive to abnormal physical or electrical wear under nor mal operating conditions If the environmental conditions on site differ from those specified as to temperature and humidity or if the atmosphere around the relay contains chemically active gases or dust the relay should be visually inspected during the relay secondary testing The visual inspection should focus on Signs of mechanical damage on relay case and terminals Dust accumulated inside the relay cover or case remove carefully with compressed air or a soft brush Signs of corrosion on terminals case or com ponents inside the relay If the relay fails in operation or if the operation values considerably differ from those stated in the relay specifications the relay should be given a proper overhaul Minor measures such as exchange of a faulty module can be taken by personnel from the customer s instrument work shop but major measures involving the elec tronics are to be taken by the manufacturer Please contact the manufacturer or his nearest representative for further information about checking overhaul and calibration of the relay Note The protection relays contain electronic circuits which are liable to serious damage due to elec trostatic disch
3. I After storing the data transfer rate for the serial communication you may return to the main menu of register A by pressing the STEP button for about 0 5 second Stored information The parameter values measured at the moment when a fault occurs are recorded in the registers in some modules also the setting values The recorded data except for some setting param eters are set to zero by pressing the push buttons STEP and RESET simul taneously The data in normal registers are erased if the auxiliary voltage supply to the relay is disrupted only the set values and the number of autoreclosings are maintained in the registers at a voltage failure The number of the registers varies with different module types The function of the registers are illustrated in the descriptions of the separate relay modules Additionally the system panel contains a simplified list of the data recorded by the various relay modules of the relay assembly All C type relay modules are provided with two general registers register 0 and register A Register 0 contains in coded form the informa tion about e g external blocking signals and status information for the circuit breaker The codes are explained in the descriptions of the relay modules Register A contains the address code of the relay module as required by the serial communication system Example 1 on page 4 shows how the address code is altered Submenu 1 of register A contains th
4. PRIME MOVER SHUT DOWN i in iii ii Generator pole short circuit Example 3 protection Fig 6 Generator pole short circuit protection with relays SPAU 130 C and SPAJ 131 C The selector switch positions are shown in the table on the following page 14 When a pole short circuit occurs on a generator provided with a static excitation system the generator voltage and the excitation rapidly decrease so much that the short circuit current falls below the set start current of the overcur rent relay By capturing the start signal of the overcurrent relay with a drop off delayed auxiliary relay which controls the external blocking input of the undervoltage relay the protection arrange ment can be made to operate even though the overcurrent relay resets without tripping The undervoltage stage is normally blocked and it is deblocked by the starting signal of the low set stage of the overcurrent relay The undervoltage stage trips the circuit breaker after the set oper ate time t lt When required the undervoltage stage can be blocked when the miniature circuit breaker of the energizing voltage circuit operates The start signal of the undervoltage stage can be used for preventing the generator from being connected to the network during undervoltage or for alarming on undervoltage The selector switches of the voltage relay SPAU 13
5. SPAU 130 C O 80 265V O 18 80V Uaux ft A SPCU 3014 REGISTERS 1 U gt Un 2 Umax Un 3 U lt Un SGR 4 Umin Un cS 5 n U gt cI 8 mtu 7 t t gt S 8 t t lt 0 1 SS ey 8 CRs 422 Ger No X 1 The relay module is provided with two opera tion indicator located in the right bottom corner of the front plate of the relay module One indicates operation of the overvoltage stage and the other operation of the under voltage stage Yellow light indicates that the concerned stage has started and red light that the stage has operated tripped With the SG2 software switchgroup the start and trip indicators can be given a latching function which means that the LEDs remain lit although the signal that caused operation returns to normal The indicators are reset with the RESET push button An unreset indicator does not affect the operation of the relay 2 The yellow LED indicators U12 U23 and U31 onthe upper black part of the front plate indicate when lit that the corresponding voltage value is currently being displayed 3 The red IRF indicator of the self supervision system indicates when lit that a permanent internal relay fault has been detected The fault code appearing on the display once a fault has been detected should be recorded and notified when service is ordered 4 The green Uy LED on the front panel is lit when the power supply mo
6. 21 1202 z919 I kdlHl ZdiHL IVNOIS LLHYLS Jul xnen sg dOLS YAWIL Fig 7 Test circuit for the overvoltage and undervoltage relay SPAU 130 C function of the test circuit can be verified by the selector switches properly set the auxiliary means of a multimeter voltage can be connected to the relay The When the test circuit has been completed and 18 Checking the matching transformers The three matching transformers of the relay are checked one by one Apply voltage to the relay and compare the voltage value read from the display of the relay with the voltage value shown by the voltmeter The measurements can be performed at the rated voltage of the relay Checking the overvoltage stage U gt Set the switches of the SGR switchgroup as follows before starting the test Switch Position CON WNDU BR WN He oY oOo oe 0D The following relay functions are obtained Output relay Function terminals A 65 66 Trip signal of stage U gt B 68 69 Trip signal of stage U lt C 80 81 Signal on operation of stage U gt D 77 78 Start signal of stage U gt E 70 71 72 Self supervision signal Checking the start function Apply test voltage to terminals 13 14 or 13 15 depending on the used energizing input Close switch S1 and increase the voltage slowly until the overvoltage stage starts and indicator L2 is lit Read the start voltage value from the voltme
7. entered by pressing the STEP push button The registers 1 8 are cleared by pressing the push buttons STEP and RESET simultaneously or via the SPA bus with the command V102 The registers are also cleared if the auxiliary power supply to the module is interrupted The address code of the relay module the data transfer rate of the serial communication system and the password of the module are not affected by voltage failures The instructions for setting the address and the data transfer rate are given in the manual General characteristics of C type relay modules At the initial state when none of the stages has started the reading of register 1 is 000 and that of register 3 is Menu chart MAIN MENU SUBMENU STEP 0 5 s RESET 1s q B Display off Normal state Q Voltage U12 measured t parameter that can be set in the setting mode Q Voltage U23 measured S i STEP BACKWARD 0 5 s STEP FORWARD 1 s T Voltage Us1 measured gt SUBMENU 2 E Pot 47 Remotely set 47 Remotely set B ie Setstart v ltage U 7A percentage p1 FP value U gt x pi cd i K Set opera
8. from one submenu to another or back to the main menu follows the same principle as when mov ing from the main menu display to another the display moves forward when pressing the STEP button for one second and backward when pressing it for 0 5 seconds The return to the main menu has taken place when the red STEP display turns dark When entering a submenu from a measured or set value indicated by a LED indicator the indicator remains glowing and the address win dow STEP of the display starts flashing A flashing address window when no LED indica tor is lit indicates that the submenu of a register has been entered Main menu STEP 0 53 RESET 1s STEP 0 53 p STEP 1s Starting value a Remote setting gt Remote setting of stage I gt poe Lets percentage pl ty LAK value I gt pl E STEP is ekar i feet of stage l gt zi percentage pi t vp value t pa STEP 0 53 T Starting value a Remote setting y Remote setting of stage Is ey percentage pS t fp value le x p3 Operating time tr 1 Remote setting gt e lRemote setting of stage Is vy percentage pd fp value te x pt Checksum of Hi Remotely set w Remotely set ewitchgroup 51 ep checksum fp checksum Fig 3 Example of the main and submenus for the settings of the overcurrent relay module SPC 3C3 The settings made with the setting knobs are in the main menu and they are displayed by pressing the STEP button In addition to
9. is activated Shortly thereaf ter the indicator goes out and the output auto matically resets At the same time the module leaves the test position h It is possible to leave the trip test mode at any step of the sequence scheme by pressing the RESET button for about 10 seconds until the three digits to the right stop flashing Operation indicators A measuring relay module is provided with two separate operating stages each of which with its own yellow red operation indicator on the lower part of the front plate of the relay module The operation indicator starts glowing yellow when the operating stage starts and red when a delayed tripping operates The functions of the start and operation indicators are described in detail in the different protection relay module manuals Fault codes In addition to the protective functions the relay module is provided with a self supervision sys tem which continuously supervises the function of the microprocessor its program execution and the electronics When the self supervision system has detected a permanent fault in the relay module the red IRF indicator on the panel starts glowing soon after the fault was discovered At the same time the module puts forward a signal to the self supervision contact of the relay assembly In most fault situations a fault code indicating the nature of the fault appears on the display of the module The fault code which consists of a red
10. lt 95 40 C 56 d a 93 95 55 C 6 cycles 40 70 C IP 54 3 0 kg The tests do not apply to the serial port which is used exclusively for the bus connection module Examples of application Example 1 Network overvoltage and undervoltage supervision 10 131415 161718 192021 10 11 6162 CTT parc que cp tes r paag o gt 22 22 E AOLL SPAU 130 C Wi 2I STARTI SIGNALI TRIP2 TRIP1 pN SERIAL 6869 6566 PORT giia io ea i CI 1 I I I I I I ee I I I I I I I I I I I I I I I eee U2 Fig 4 Substation overvoltage and undervoltage protection with voltage relay SPAU 130 C The selector switch positions are shown in the table on the following page The overvoltage and undervoltage relay module SPCU 3C14 measures the phase to phase voltages Many components of the power system are sensitive to overvoltage Inverse time character istic of the overvoltage relay is recommended as the liability to damage of the power system components often is a function of the duration of the overvoltage At inverse time characteristic the relay provides an alarm signal at when the set start voltage has been exceeded If the voltage exceeds 1 06 times the set start voltage the relay operates the faster the greater the voltage is Thus the overvoltage stage provides an alarm signal when the overvoltage arises and trips the circu
11. relay SPAU 130 C can be set as follows Switch SG1 SPCU 3C14 SGB SPCU 3C14 SGR 1 0 three phase 0 notin use 1 control signal from minia ture circuit breaker MCB 2 1 U gt start time 30s 0 notin use 0 no start signal of stage U lt to output relay D 3 1 U gt inverse charact 0 not in use 0 no start signal of stage U gt to output relay D 4 1 0 not in use 1 trip signal of stage U lt to curve B output relay D 5 0 1 blocking of stage t lt 0 no trip signal of stage U lt to output relay C 6 0 U lt stage blocked 0 not in use 0 no trip signal of stage U lt if U lt 20 x Un to output relay A 7 0 U lt start time 0 1s 0 not in use 1 trip signal of stage U gt to output relay C 8 0 t lt 10 12s 0 not in use 0 notrip signal of stage U gt to output relay B z 14 When the switches are set as above the output relays of the voltage relay SPAU 130 C provide the following signals Contact Function 65 66 Tripping of the main circuit breaker U gt 68 69 Tripping of the circuit breakers of the motor feeders U lt 80 81 Signal on tripping of the main circuit breaker U gt 77 78 Signal on tripping of the circuit breakers of the motor feeders U lt 70 71 72 Self supervision signal GENERATOR CB TRIP EXCITATION CB TRIP AND PRIME MOVER SHUT DOWN th ie iI L1 L2 L3 GENERATOR AND EXCITATION CB TRIP
12. ter Operate time t gt Definite time characteristic If possible set the test voltage at 2 x the set start voltage of the overvoltage stage Note The maximum voltage withstand of 2 x U must not be exceeded The timer is started by switch S1 when it is closed and stopped by contact 65 66 when output relay A picks up The operation of output relay C is indicated with indicator L3 when it is lit When the relay starts the LED indicator U gt in the lower right corner of the front panel is lit with yellow colour When the overvoltage stage operates the LED indicator turns red Inverse time characteristic When the relay has been set for inverse time characteristic the test is performed by mea suring the operate time at two voltage values e g 1 1 x U gt and 1 4 x U gt and by comparing the operate times with the operate times obtained from the characteristic curves 20 Checking the undervoltage stage U lt Set the switches of the SGR switchgroup as follows before starting the test Switch Position CONAWHKWN cooorcorr The following relay functions are obtained Output relay Function terminals A 65 66 Trip signal of stage U gt B 68 69 Trip signal of stage U lt C 80 81 Signal on operation of stage U lt D 77 78 Start signal of stage U lt E 70 71 72 Self supervision signal Further switch SG1 1 is set in position 1 which makes the relay a single p
13. the display Simultaneously the indicator for the concerned setting starts glowing In addition to the settings made with the setting knobs most modules allow so called remote setting This means that the settings made by means of the setting knobs of the module and the checksum of the programming switchgroup may be altered through an instruction over the serial communication bus Remote setting is possible if the password in the register A is known and the remote settings are not acti vated i e parameter V150 0 The circumstance that the remote settings are activated is shown with a flashing light of the indicator of the setting knob the value of which currently is being displayed Display Display main menu The measured and set values as well as the data recorded are shown on the display of the meas uring relay module The display consists of four digits The three digits green to the right indicate the measured set or stored value and the digit at the extreme left red the number of the register The measured or set value displayed is indicated by a yellow LED indicator The number of the register glows only when a stored value is displayed When the auxiliary voltage is connected to a measuring relay module the module initially tests the display by stepping through the digits 1 9 for about 15 seconds When the test is finished the display turns dark The testing can be interrupted by pressing the STEP button
14. 0 x Un output relay A 7 1 U lt start time 30s 0 notin use 1 trip signal of stage U gt to l output relay C 8 1 t lt 10 120s 0 not in use 0 notrip signal of stage U gt to output relay B x 230 When the switches are set as above the output relays of the voltage relay SPAU 130 C provide the following signals Contact Function 65 66 Tripping of the circuit breaker on the high voltage side of the transformer U gt 68 69 Tripping of the circuit breaker on the low voltage side of the transformer U lt 80 81 Signal on tripping U gt and U lt 77 78 Starting U gt and U lt 70 71 72 Self supervision A prewarning of a voltage disturbance is ob tained over the contact interval 77 78 and a signal on tripping of stage U gt or U lt is obtained over the contact interval 80 81 When the over voltage stage or the undervoltage stage starts or operates the start indicator yellow or operation indicator red of the concerned stage is lit If the indicators are selfreset they are switched off when the measured voltage returns If the indi cators are latching they have to be reset manually with the reset push button on the front panel or by remote control via the serial port Example 2 Motor undervoltage protection 12 a SPAU 130 C MAIN CB TRIP MOTOR FEEDER CB TRIP i START1 SIGNALI TRIP2 TRIP1 re ade MW ea PORT oa S o E a ta Fig 5 Motor feeder undervoltage protec
15. 0 C can be set as follows Switch SG1 SPCU 3C14 SGB SPCU 3C14 SGR 1 0 three phase 0 not in use 1 blocking signal from the drop off delayed relay 2 1 U gt start time 30s 0 not in use 1 start signal of stage U lt to output relay D 3 1 U gt inverse charact 0 not in use 0 no start signal of stage U gt to output relay D 4 I 0 not in use 0 no trip signal of stage U lt curve B to output relay D 5 0 1 blocking of stage t lt 1 trip signal of stage U lt to output relay C 6 0 Uk no block when 0 not in use 1 trip signal of stage U lt U lt 20 x Un to output relay A 7 0 U lt start time 0 1s 0 notin use 1 trip signal of stage U gt to output relay C 8 0 tem dls 0 not in use 0 no trip signal of stage U gt to output relay B zy 14 When the switches are set as above the output relays of the voltage relay SPAU 130 C provide the following signals Switch Function 65 66 Tripping of the generator circuit breaker and the excitation circuit breaker on pole short circuit stages U lt and I gt or on overvoltage stage U gt 68 69 Prime mover shut down on pole short circuit stages U lt and I gt 80 81 Signal on operation of the overvoltage stage or pole short circuit protection 77 78 Start signal of the undervoltage stage U lt 70 71 72 Self supervision signal The output contacts of the relay SPAJ 131 Ccan be given the following functions Switch Function 65 66 T
16. 1 U12 THREE PHASE DEFINITE TIME OR INVERSE TIME OVERVOLTAGE STAGE U23 THREE PHASE DEFINITE TIME a UNDERVOLTAGE STAGE SIGNAL 1 START 1 U31 EXTERNAL BLOCKING FUNCTION FOR THE UNDERVOLTAGE STAGE BLOCKING SERIAL COMMUNICATION SERIAL I O Fig 1 Protection functions of the combined overvoltage and undervoltage relay SPAU 130 C The encircled numbers refer to the ANSI American National Standards Institute number of the concerned protection function Connections Zz gt v 5 SPAU 130 C STARTI SIGNALI TRIP2 TRIP1 Fig 2 Connection diagram for the combined overvoltage and undervoltage relay SPAU 130 C Vaux A B C D E IRF SS_ TS_ SGR SGB 5 TRIP_ SIGNALI STARTI SERIAL PORT SPA ZC_ Rx Tx Auxiliary voltage Output relays Self supervision signal Start signal Trip signal Switchgroup for configuring trip and alarm signals Switch for blocking the undervoltage stage Trip output Signal on relay operation Start signal or signal on relay operation Combined overvoltage and undervoltage relay module SPCU 3C14 Power supply and I O module SPTU 240S1 or SPTU 48S1 I O module SPTE 3E15 Serial communication port Bus connection module Optical fibre receiver Rx and transmitter Tx of the bus connection module o c g i i i Fig 3 Rear view of the overvoltage and undervoltage relay SPAU 130 C Specification of input and output te
17. 2 s and 10 120 s Further the checksum of the programming switchgroup SGI is indicated on the display when the indicator under the switchgroup is glowing In this way a check can be made to prove that the switches have been set and that they work properly An example of calculating the checksum is given in the description General characteristics of C type relay modules Selector switches Modified 99 12 When the module has been given single phase operation only Uj2 is measured Additional relay functions required in various applications are selected by means of the selector switches of switchgroup SG1 located on the front panel of the relay module The numbering of the switches 1 8 and the switch positions 0 and 1 are marked on the front panel Switch Function SG1 1 Selection of three phase or single phase operation Three phase operation when SG1 1 0 Single phase operation when SG1 1 1 SG1 2 Start time selection for the overvoltage stage U gt When SG1 2 0 the start time is 0 1 s When SG1 2 1 the start time is 30 s SG1 3 Selection of definite time or IDMT mode of operation for the U gt stage At definite SG1 4 time mode of operation switches 4 and 5 are used for selecting the setting range of the SG1 5 operate time t gt At IDMT mode of operation switch 4 is used for selecting the inverse time curve switch 5 has no function SG1 3 SG1 4 SG1 5 Mode of O
18. 7 i 0 4 0 2 0 05 0 1 0 01 1 0 Veil 1 2 13 1 4 1 5 U U gt Fig 5 Characteristic curve set A of overvoltage stage U gt t s 1000 k gt 1 0 0 1 0 7 0 4 0 2 0 05 0 01 1 0 1 1 1 2 1 4 1 5 U U gt Fig 6 Characteristic curve set B of overvoltage stage U gt Technical data Overvoltage stage U gt Start voltage U gt 0 8 1 6x Un Start time 0 1 sor 30s Operate time at definite time mode of operation 0 05 1 00 s 0 5 10 0 s or 5 100 s Time multiplier k gt at inverse time characteristic 0 05 1 00 Reset time typically 60 ms Drop off pick up ratio typically 0 97 Operate time accuracy at definite time mode of operation and start time accuracy Operate time accuracy at inverse time characteristic Operation accuracy Undervoltage stage U lt Start voltage U lt Start time Operate time at definite time characteristic Reset time typically Drop off pick up ratio typically Operate time accuracy and start time accuracy Operation accuracy 2 of set value or 25 ms 25 ms or the inaccuracy appearing when the measured voltage varies 3 3 of set value 0 4 1 2x Up 0 1 sor 30s 1 12 sor 10 120 s 60 ms 1 03 2 of set value or 25 ms 3 of set value Serial communication parameters Event codes
19. E EEEE 13 Event cod s iiine ee i E R E E E E E SENTS 13 Data to be transferred over the serial bus Modified 99 12 ssssssssssssesereseserrressreree 14 Fault ES ce ele eect wnt EE A aie naires cect E E ER EE 17 Features Three phase voltage measuring relay module Automatic blocking of the undervoltage stage which also can be programmed for use in single phase applications Overvoltage stage with definite time or inverse definite minimum time characteristic Two sets of voltage time curves selectable at inverse time operation Undervoltage stage with definite time charac teristic External blocking of the undervoltage stage via built in control input on loss of energizing voltage Digital display of measured values set values and recorded fault values Serial communication capability for extensive exchange of data with substation level equip ment Continuous self supervision of hardware and software for enhanced reliability and availability Auto diagnostic fault codes generated by the module on detection of a permanent internal fault Description of operation The combined overvoltage and undervoltage module SPCU 3C14 isa three phase relay mod ule which can be programmed for single phase operation by means of switch SG1 1 on the front panel The module contains an overvoltage stage and an undervoltage stage The overvoltage stage can be given either definite time or inverse time characteristic whereas the operation of t
20. SPAU 130 C Three phase overvoltage and undervoltage relay User s manual and Technical description SPAU 130 C O 80 265V O 18 80V SPCU 3C14 REGISTERS U gt Un Umax Un U lt Un Umin Un n U gt n U lt t t gt t t lt T Us ye ANOnRWND 1MRS 750638 MUM EN Issued 1997 02 07 Modified 2002 04 25 Version B replaces 34 SPAU 15 EN1 Checked MK Approved OL Data subject to change without notice SPAU 130 C Three phase overvoltage and undervoltage relay Contents POA PUICGS i seus vexccatipensavsnesnosnrasenetusdacautagedaea chasis NE S EESE esaea levees Dentdertuuthsensecesiees reves 2 PEP CAO citi tindesiti E E A E AT 3 FUNGUO sirosis ienesis ee iiser eass aaaeeeaei eig osaa E ESEESE ESEESE 3 CGONNECHONS virseseier neiisir ea E Ea NE EEEE E N R AR LEA 4 Configuration owtputtelay ee mene ROE in A TAE TE E 6 Startand operation INdicatOrS essens esaerea nE En eE RERET E EETAS E EREE vi Combined power supply and VOmodul ese tuie ced bamentanenenetudbinessau ned veesbenaucuardarbacbdcess 7 Technical data modifed 2002208 outs Svciscosisnssiauesncateesinesiaenan mnie taeesuoconnstiassidbnavienneatatad 8 bob eve oye ecg igs 100 Cera ons mena ina ne TON mn Rn nr PE ne REAR wT Pr Pee 10 Secondary i eC EON testina isisi ennen sa E ea EEEN E E EE EERE a
21. The protective functions of the module are operative throughout the testing All the data required during normal operating conditions are accessible from the main menu which presents the measured values in real time the normal setting knob settings as well as the most important memorized data The data to be shown in the main menu are selected to the display in a certain sequence by means of the STEP button When pressing the STEP button for about one second the display moves forward in the display sequence When pressing it for about 0 5 seconds the display moves backwards in the display sequence From a dark display only forward movement is possible When keeping the STEP button de pressed the display is continuously moving in forward direction stopping for a while at the dark point Unless the display is switched off by stepping to the dark point it remains activated for about 5 minutes from the last pressing of the STEP button and then goes out Display submenu Setting mode Less important values and values not very often set are displayed in the submenus The number of submenus varies with different relay module types The submenus are presented in the de scription of the concerned module A submenu is entered from the main menu by pressing the RESET button for about one sec ond When the button thereafter is released the red digit STEP of the display starts flashing indicating that one is ina submenu Going
22. The substation level control data communica tor is able to read over the SPA serial bus the event data of the module e g starting and tripping from the over undervoltage relay module SPCU 3C14 Event information called for are printed out in the format time ss sss and event code The event codes of the module are El E8 E50 and E51 Furthermore the substation level control data communicator is able to form event codes relating to e g the data communication The codes E1 E8 and the events represented by these can be included in or excluded from the event reporting by writing over the SPA bus a so called event mask V155 to the module The event mask is a binary number coded to a decimal number The event codes E1 E8 are represented by the numbers 1 2 4 128 The event mask is formed by multiplying above numbers either by 0 event not included in reporting or 1 event included in reporting and adding up the numbers received compare calculation of checksum The event mask may have a value in the range 0 255 The default value of the over under voltage relay module SPCU 3C14 is 85 which means that all startings and trippings are in cluded in the reporting but not the resetting The codes E50 E54 and the events represented by these cannot be excluded from the reporting Event codes for over undervoltage relay mod ule SPCU 3C14 Code Event Weighting Default coefficient settin
23. a 50 Hz Uax 110 V de 15 bus connection modules SPA ZC 21 MM 2 fibre optic cables SPA ZF MM 100 14 fibre optic cables SPA ZF MM 5 SPCU 3014 Combined overvoltage and undervoltage relay module User s manual and Technical description Co Co 2 Ca 3 C14 C5 Eje C7 ell p m wn m 4 SPCU 3014 1MRS 750510 MUM EN Issued 96 12 02 Modified 99 12 20 Version D replaces 34 SPCU 7 EN1 Checked KJ Approved MN Data subject to change without notice SPCU 3C14 Combined overvoltage and undervoltage relay module Contents FOAGUICES cuprenn isnie eede ER E EEEE sence E SSE EEEE EEE EEEE REE ENESE EESE E ESEE EES 2 Description f operatio Neses isn iee eae ENE EE EE EER E 3 POLS FS eA sentga helene E E E A ER E EE R 4 Front panel tsa e cdi E tea E T cee Den 5 Stattand fee WV ep cc at AE EAE E hoe aa death ae 5 SSNS A caida A E Anieeodinaitha sn A E 6 Selector switeh s Modified J912 rnes aaan aE EE A E 6 Meas red data seida cic poserne akan k EEEE REET EAEE KEER OS eE EET EEES EEE 8 Recorded informat NI ec tae No di nai ncaa cade EE 8 Menu CM tac cde iciathanacialnnaarsinsttecnasde nace eciiu nn E E R 10 Voltage time characteristic Modifted 99 10 ssssssecisniscssunnstsinnntetisjuantudshonsssavonantbibbuatiivicinn 11 Technical data Meee etn es teeta tree a rete eT Ont EE EEEE E peer ee etme hte 12 Siete COMMU IOALION patraineterS Lace sii sel seei ais ain ia TEE E
24. an also be mounted in a case for surface mounting type designation SPA ZX 115 Panel cut out 139 1 250 142 p 216 34l 30 186 A ry oF H g 8 1 e 129 1 r b Raising frame a b SPA ZX 111 176 74 SPA ZX 112 136 114 SPA ZX 113 96 154 Fig 8 Dimensions of the overvoltage and undervoltage relay SPAU 130 C The relay case is made of profile aluminium and finished in beige A rubber gasket fitted on the mounting collar provides an IP54 degree of protection between relay case and mounting panel when the relay is flush mounted The hinged cover of the relay case is made of clear UV stabilized polycarbonate and pro vided with a sealable finger screw A gasket along the edge of the cover provides an IP 54 degree of protection by enclosure between the relay case and the front cover All input and output wires are connected to the screw terminal blocks on the rear panel Each terminal is dimensioned for one max 6 mm wire or two max 2 5 mm wires The D type connector connects to the serial communica tion bus via a bus connection module Order information 22 1 Quantity and type designation 2 Order number 3 Rated frequency 4 Auxiliary voltage 5 Accessories 6 Special requirements Example 15 pcs voltage relay SPAU 130 C RS 422 020 AA f
25. an be read by the L com mand only once Should a fault occur for ex ample in the data transfer it is possible by us ing the B command to re read the contents of the event register once already read by means of the L command When required the B com mand can be repeated The setting values 1 55 are the alerted set values currently used by the protection relay module These values are set either by remote control or by means of the setting knobs The values 11 S15 are set with the setting knobs and the selector switches Variables 21 825 are set as percentage values via remote control The settings 821 825 allow reading or writ ing A condition for writing is that the pass word V 160 for remote setting has been opened The variables 31 S35 contain the remote set ting values When the values of the variables 21 524 are to be changed the variables can be given a per centage factor within the range 0 999 It is possible to alter a setting value beyond the set ting ranges specified in the technical data of the relay module However the validity of the set ting values are guaranteed only within the set ting ranges specified in the technical data Activation of the self supervision function V165 prevents the relay module from operat ing as long as the self supervision output is ac tivated and the IRF indicator is lit Fault codes Once the self supervision system has detected a permanent relay faul
26. aracteristics of ting mode and configuring the module is de C type relay modules 10 Voltage time characteristic Modified 99 10 At inverse time characteristic the operate time of the overvoltage stage will be shorter the greater the deviation from the setting value The operation of the U gt stage is based on inverse time characteristic when the selector switch SG1 3 on the front panel is in position 1 The relationship between time and voltage at inverse time characteristic can be expressed as follows AtanIDMT mode of operation the recording of the tripping time of the overvoltage stage does not start until the voltage exceeds the setting value by 6 The operating time accuracy stated in the technical data applies when the voltage exceeds the setting value by 10 The overvoltage stage includes two characteristics with different inversities The characteristic is selected with the programming switch SG1 4 The degree of inversity is determined by the factor p as follows k gt x a t pe b x U U gt 0 5 Characteristic p constant U gt where t operate time s A 2 k gt time multiplier B 3 U measured voltage V U gt set start voltage V a constant 480 b constant 32 c constant 0 035 p constant t s 1000 100 10 k gt 1 0 Q
27. are to be set in position SPA Configuration of The trip signals of the U gt stage is firmly wired ing functions can be selected with the switches output relays to output relay A and the trip signal of the U lt of the SGR switchgroup on the front panel of stage to output relay B In addition the follow the relay Switch Function Factory User s default settings SGR 1 Routes the external blocking signal to stage U lt 1 SGR 2 Routes the start signal of the U lt stage to output relay D 1 SGR 3 Routes the start signal of the U gt stage to output relay D 1 SGR 4 Routes the trip signal of the U lt stage to output relay D 1 SGR 5 Routes the trip signal of the U lt stage to output relay C 1 SGR 6 Routes the trip signal of the U lt stage to output relay A 1 SGR 7 Routes the trip signals of the U gt stage to output relay C 1 SGR 8 Routes the trip signals of the U gt stage to output relay B 1 Circuit breakers can be controlled directly with separate trip output relays can be configured for output relay A and B This enables two circuit the overvoltage protection and the undervoltage breakers to be controlled at the same time or protection Start and operation indicators ARR AIDED a Un 100V HOV fn 50Hz 5 60Hz a gt
28. arge Before removing a module ensure that you are at the same electrostatic potential as the equipment by touching the case Note Static protection relays are measuring instru ments and should be handled with care and protected against damp and mechanical stress especially during transport and storage Exchange and Overvoltage and undervoltage relay module SPCU 3C14 spare parts Combined power supply and I O module Unux 80 265 V ac dc SPTU 24081 Unux 18 80 V de SPTU 4851 Case including I O module SPTK 3E15 I O module SPTE 3E15 Bus connection module SPA ZC 17_ or SPA ZC 21_ Ordering Combined overvoltage and undervoltage relay numbers SPAU 130 C RS 422 020 AA CA DA FA Combined overvoltage and undervoltage relay including test adapter RTXP 18 SPAU 130 C RS 422 220 AA CA DA FA The two last letters of the ordering number designate the rated frequency fn and the U yx voltage range of the relay as follows AA f 50 Hz and Uayx 80 265 V ac dc CA f 50 Hz and Ugy 18 80 V dc DA fp 60 Hz and U ux 80 265 V ac dc FA f 60 Hz and Ua 18 80 V dc 21 Dimensions and mounting The relay case is basically designed for flush mounting The mounting depth can be reduced with an optional raising frame type SPA ZX 111 reduces the depth behind the mounting panel by 40 mm type SPA ZX 112 reduces the depth by 80 mm and type SPA ZX 113 reduces the depth by 120 mm The relay c
29. ased on loss of auxiliary supply 3 The lowest voltage value measured during the start sequence as a multiple of the rated voltage of the relay energizing input Any undervoltage stage start erases the old value and starts a new recording sequence The recording sequence is stopped on operation of the undervoltage stage and the lowest value during the start sequence is found in the register 4 The lowest voltage value measured as a multiple of the rated voltage of the relay energizing input The register value is updated as soon as the measured value falls below the value already in the register Register 4 is erased with a command via the serial port or by pushing the STEP and RESET push buttons simultaneously The registered value is also erased on loss of auxiliary supply 5 Number of starts of the overvoltage stage n U gt 0 255 6 Number of starts of the undervoltage stage n U lt 0 255 7 Duration of the latest start event of the overvoltage stage expressed as a percentage of the set operate time t gt or at IDMT mode of operation of the calculated operate time A new start resets the counter which starts recounting from zero If the stage has tripped the counter reading is 100 8 Duration of the latest start event of the undervoltage stage expressed as a percentage of the set operate time t lt A new start resets the counter which starts recounting from zero If the stage has tripped the counter reading is 100
30. cator 1 0 E E E 4 i rogramming switches SG1 Eje C7 Setting knob 3 gt gt 20 E n with indicator 25 e Switchgroup indicator Stage 2 Reset push button RESET V Vv o pa Oo oa a m o m 4 Setting knob 4 with indicator a te Start operation indicators SPCJ 3C3 1MRS 750328 MUM EN Issued 96 02 19 Version A replaces 34 SPC 2 EN1 Checked L W U Approved TK Data subject to change without notice General characteristics of C type relay modules Contents Push DUONG rirerire aani Programming switches SG1 osses Setting KODS rissies RE Displayer sme tte Oe EENE Display main ISIN is ssiielvuiscocesbaucessanetuceusinden Display submenu sanies Settna MOMS sodeiszesscescerucpisindirtumntienaequionses Example Operation in setting mode Stored informatio Heesen Trip tet MOG ss iistecntucra nectarines Example Trip test function seses Operation indicators creearea eaa Fault codes ieren veneceivedntneveatnasencinas Push buttons The front panel of the relay module contains two push buttons The STEP button is used for stepping forward in the display and the RESET button for resetting the red indicators Addi tionally the push buttons are used for certain settings e g for setting the address of the relay module and the data transfer rate for the serial communication when the modules are used in relay package
31. digit 1 anda three digit green code number cannot be removed from the display by reset ting When a fault occurs the fault code should be recorded and stated when service is ordered AA ED ED PADDED ABB Oy Distribution Automation P O Box 699 FI 65101 Vaasa FINLAND Tel 358 0 10 22 11 Fax 358 0 10 22 41094 www abb com substationautomation 1MRS 750638 MUM EN
32. dule operates prop erly 5 The LED indicator below a particular setting knob indicates when lit that the setting value of the knob is currently being dis played 6 The LED of the SG1 switchgroup indicates when lit that the checksum of the switch group is currently being displayed The start and operation indicators the function of the SG2 software switchgroup and the func tions of the LED indicators during setting are described more detailed in the user s manual Combined overvoltage and undervoltage relay module SPCU 3C14 Combined power supply and I O module The combined power supply and I O module U2 is located behind the system front panel of the protection relay and can be withdrawn after removal of the system front panel The power supply and I O module incorporates a power unit four output relays the control circuits of the output relays and the electronic circuitry of the external control input The power unit is transformer connected that is the primary side and the secondary circuits are galvanically isolated The primary side is protected by a slow 1 A fuse F1 placed on the PC board of the module When the power source operates properly the green Uzus LED on the front panel is lit The power supply and I O module is available in two versions which have different input volt age ranges Ungux 80 265 V ac dc Uax 18 80 V de type SPTU 240S1 type SPTU 48S1 The voltage range
33. e data transfer rate value expressed in kilobaud for the serial communication Submenu 2 of register A contains a bus traffic monitor for the SPACOM system If the protec tive relay which contains the relay module is linked to a system including the control data communicator and the data communication system is operating the counter reading of the monitor will be zero Otherwise the digits 1 255 are continuously rolling in the monitor Submenu 3 contains the password required for changing the remote settings The address code the data transfer rate for the serial communica tion and the password can be set manually or via the serial communication bus For manual set ting see example 1 The start value for the address code and the password is 001 and that for the data transfer rate 9 6 kilobaud Trip test mode Register 0 also allows access to the so called Trip test function which allows the output signals of the relay module to be activated one by one If the auxiliary relay module of the protec tion assembly is in place the auxiliary relays will be included in the testing When pressing the RESET button for about 10 seconds the three green digits to the right start flashing to indicate that the relay module is in test position The indicators of the setting knobs indicate by flashing which output signal can be activated The required output function is se lected by pressing the RESET button for about 1 second until t
34. e is left in the Trip test mode it will return automatically after approx 5 minutes Example 2 Trip test function Forced activation of the out puts is made as follows a Step forward on the display to register 0 JOH Jo D Indicator switched off Yellowindication B ARedindication b Press the RESET button for about 10 seconds until the three green digits to the right and the LED indicator of the uppermost setting knob start flashing c Press the push buttons RESET and STEP si multaneously Then the starting of stage 1 e g the I gt stage of the overcurrent module SPCJ 3C3 is activated and simultaneously the indi cator of the stage starts glowing yellow d Press the RESET button for about 1 second until the indicator of the second setting knob starts flashing e Press the push buttons RESET and STEP si multaneously to activate tripping of stage 1 e g the I gt stage of the overcurrent module SPC 3C3 The indicator of the concerned stage starts glowing red f Starting and tripping of the second stage is activated in the same way as stage 1 The indica tor of the third or fourth setting starts flashing to indicate that the concerned stage has been acti vated g To activate the self supervision output step to wards the test position where no indicator is flashing Press the STEP button once In about 5 seconds the red IRF indicator starts glowing and the IRF output
35. e setting values of the relay during normal operation conditions have to be recorded for instance on the refer ence card accompanying the relay For secondary testing the relay must be dis connected from the voltage transformer circuits and other secondary circuits by means of disconnectable terminal blocks or a test adapter fitted on the relay A possible connection of the relay to the circuit breaker trip coil must be noted during the test When the auxiliary voltage is connected to the relay a self testing program is carried out auto matically The self testing program includes the whole relay except for the matching transform ers and the contacts of the output relays The operational condition of the relay is tested using ordinary relay test equipment The secondary injection test also includes the matching trans formers the output relays and the accuracy of the operate values When no relay test set is available the secondary injection test can be carried out with the follow ing equipment regulating transformer isolating transformer e g 220 V 220 V voltmeter stop watch or counter for time measurement dc voltage source switches and indicator lamps supply and pilot wires calibrated multimeter Note the relay s rated voltage when measuring wires are connected to the terminals of the relay see chapter Technical data passage Energizing inputs il ee ee im 2 0 amp 1 NYdS 9969 6989 1808 8222
36. e to phase voltages Blocking signals Blocking of the tripping of the U lt stage Front panel programming switchgroup Software selector switchgroup for defining the mode of function of the start and operation indicators Selector switchgroup for configuration of blockings on the PC board Start signal of the U gt stage Trip signal of the U gt stage Start signal of the U lt stage Trip signal of the U lt stage Yellow indicator Red indicator All input and output signals of the relay module The signals wired to the terminals are shown in are not necessarily wired to the terminals of the signal diagram of the concerned protection every protection relay unit including the over relay unit see user s manual voltage and undervoltage relay module Front panel Indicators for measured voltages Setting knob and indicator for starting value of stage U gt Setting knob and indicator for operate time t gt or time multiplier k gt of stage U gt Setting knob and indicator for starting value of stage U lt Setting knob and indicator for operate time t lt of stage U lt Simplified module symbol Self supervision alarm indicator Numerical display Display step push button Selector switchgroup SG1 Indicator for switchgroups SG1 SG2 and SG3 Reset push button Operation indicators Type designation of the relay module Fig 3 Front panel of the combined overvoltage and
37. g El Starting of overvoltage stage U gt 1 1 E2 Starting of overvoltage stage U gt reset 2 0 E3 Tripping of overvoltage stage U gt 4 1 E4 Tripping of overvoltage stage U gt reset 8 0 E5 Starting of undervoltage stage U lt 16 1 E6 Starting of undervoltage stage U lt reset 32 0 E7 Tripping of undervoltage stage U lt 64 1 E8 Tripping of undervoltage stage U lt reset 128 0 Default value of event mask V155 85 E50 Restart of microprocessor E51 Overflow of event register communication bus communication bus E52 Temporary interruption in data communication E53 No response from the relay module over the data E54 The module responds again over the data not included in event reporting included in event reporting cannot be set NOTE In the SPACOM system the event codes E52 E54 are generated by the station level control data communicator e g type SRIO 1000M no code number always included in event reporting Data to be transferred over the serial bus Modified 99 12 In addition to the event code data transfer the input data I data output data O data set ting values S memorized data V data and some other data can be read from the relay module over the serial communication bus Further part of the data can be changed over the SPA bus by separate commands All data information is available in channel 0 Data Code Data Values direct Measured volta
38. ge U12 Il R 0 9 99 Uh Measured voltage U23 12 R 0 9 99 x U Measured voltage U31 13 R 0 9 99 x Up Blocking of tripping of under 14 R 0 no blocking voltage stage 1 tripping of stage U lt blocked Starting of overvoltage stage U gt Ol R 0 U gt stage not started 1 U gt stage started Tripping of overvoltage stage U gt 02 R 0 U gt stage not tripped 1 U gt stage tripped Starting of undervoltage stage U lt 03 R 0 Us stage not started 1 U lt stage started Tripping of undervoltage stage U lt O4 R 0 UK stage not tripped 1 U lt stage tripped Activated start value for stage U gt Sl R 0 8 1 6 x Uy Activated operate time t gt or time S2 R 0 05 100 s or multiplier k for stage U gt 0 05 1 00 Activated start value for stage U lt S3 R 0 4 1 2x Un Activated operate time for stage U lt S4 R 1 1205 Activated checksum of switch S5 R O 255 group SG1 Start value for stage U gt S11 R 0 8 1 6x U set with the setting knob Operate time or time multiplier for S12 R 0 05 100 s or stage U gt set with the setting knob 0 05 1 00 Start value for stage U lt S13 R 0 4 1 2 x Un set with the setting knob Operate time for stage U lt S14 R 1 120 s set with the setting knob Checksum of switchgroup SG1 S15 R 0 255 set with the switches Remote setting percentage of the S21 R W 0 999 start value for stage U gt Remote setting percentage of 22 R W 0 999 operate time or time multip
39. ge and undervoltage relay module SPCU 3C14 see Technical data in the manual for the module Data communication Transmission mode Data code Selectable data transfer rates Fibre optic bus connection module powered from the host relay for plastic fibre cables for glass fibre cables Fibre optic bus connection module with a built in power supply unit for plastic fibre cables for glass fibre cables Insulation Tests Dielectric test IEC 60255 5 Impulse voltage test IEC 60255 5 Insulation resistance measurement IEC 60255 5 Electromagnetic Compatibility Tests High frequency 1 MHz burst disturbance test IEC 60255 22 1 common mode differential mode Electrostatic discharge test IEC 60255 22 2 and IEC 61000 4 2 contact discharge air discharge Fast transient disturbance test IEC 60255 22 4 and IEC 61000 4 4 power supply I O ports Environmental conditions Specified ambient service temperature range Long term damp heat withstand acc to IEC 60068 2 3 Relative humidity acc to IEC 60068 2 30 Transport and storage temperature range Degree of protection by enclosure for panel mounted relay Weight of relay including flush mounting case Fibre optic serial bus ASCII 300 1200 2400 4800 or 9600 Bd SPA ZC 21 BB SPA ZC 21 MM SPA ZC 17 BB SPA ZC 17 MM 2 kV 50 Hz 1 min 5 kV 1 2 50 us 0 5 J gt 100 MQ 500 Vdc 2 5 kV 1 0kV 6kV 8 kV 4kV 2kV 10 55 C
40. hase relay Checking the start function Set the test voltage at a value slightly above the set start voltage U lt of the undervoltage stage Close switch S1 and lower the voltage slowly until the undervoltage stage starts and indicator L2 is lit Read the start voltage value from the voltmeter Operate time t lt Definite time characteristic Set the test voltage at 0 5 times the set start voltage of the undervoltage stage The timer is started by switch S1 when it is closed and stopped by contact 68 69 when output relay B picks up Note If the test voltage setting is below 0 2 x U switch SG1 6 must be set in position 0 Checking the blocking function Set switch SGB 5 of the relay module in posi tion 1 ON and switch SGR 1 in position 1 Check the blocking function by applying a control voltage voltage value within the same range as the auxiliary voltage via switch S2 to the control input 10 11 Set the test voltage at 2 times the set start voltage of the undervoltage stage Lower the voltage until the undervoltage stage starts and indicator L2 is lit but the under voltage stage is not permitted to operate Checking the output relay of the self supervi sion system IRF The self supervision system and the function of the IRF LED and the output relay E can be tested in the Trip test mode described in manual General characteristics of C type relay mo dules The operation of output relay E is indi cated by L1
41. he undervoltage stage is based on definite time characteristic only If one of the voltages measured by the module exceeds the set start value of the U gt stage the module delivers a start signal SS1 after the set start time has expired The start time of the U gt stage is selected by means of switch SG1 2 and two alternative values are available After the preset operate time t gt or at inverse time charac teristic after a time depending on the level of the overvoltage the overvoltage stage operates de livering a trip signal TS1 The operation characteristic of the U gt stage i e definite time or inverse time characteristic is selected with switch SG1 3 At definite time characteristic the setting range of the operating time is programmed with switches SG1 4 and 5 At inverse time characteristic two different sets of voltage time curves called A and B can be selected by means of switch SG1 4 At inverse time characteristic switch SG1 5 has no func tion If one of the voltages measured by the module falls below the set start value of the U lt stage the module delivers a start signal SS2 after the set operate time has expired The start time of the Us stage is selected by means of switch SG1 7 and two alternative values are available After the preset operate time t lt a trip signal TS2 is delivered by the undervoltage stage The set ting range of the operate time is selected with switch SG1 8 To avoid unwa
42. he following LED indicator starts flashing The indicators of the setting knobs refer to the following output signals Setting knob 1 SS1 Setting knob2 TS1 Setting knob 3 SS2 Setting knob 4 TS2 No indication IRF Starting of stage 1 Tripping of stage 1 Starting of stage 2 Tripping of stage 2 Self supervision The selected starting or tripping is activated by simultaneous pressing of the push buttons STEP and RESET The signal remains activated as long as the two push buttons are being pressed The self supervision output is activated by press ing the STEP button once when no setting knob indicator is flashing The IRF output is acti vated in about 5 seconds after pressing of the STEP button and resets after that Simultane ously the display returns to the main menu and performs the initial testing indicated by rolling digits 0 9 in the display several times The signals are selected in the order illustrated in fig 4 REGISTER 0 STEP STEP RESET STEP RESET STEP RESET STEP RESET Fig 4 Sequence order for selecting the output signals in the Trip test mode If e g the indicator of the setting knob 2 second from the top is flashing and the push buttons STEP and RESET are being pressed the signal TS1 tripping of stage 1 is activated Return to the main menu is possible at any stage of the Trip test sequence scheme by pressing the RESET button for about 10 seconds If the modul
43. hgroup SG2 The mode of operation can be separately set for each indicator The mode of operation is set by means of the checksum which can be calculated from the following table Normally the start indications are self reset and the operation indi cations manually reset Indicator Manually reset Factory default Start indicator U gt 1 0 Operation indicator U gt 2 2 Start indicator U lt 4 0 Operation indicator U lt 8 8 Checksum 15 10 Switchgroup SG3 is a so called software switch group which is located in the fourth submenu of switchgroup SG1 The front panel push buttons STEP and RESET can be programmed with switch SG3 1 Switches SG3 2 8 are not in use The default value for SG3 is 0 SG3 1 Push button Clear start trip LED s Erase memorized values STEP 0 RESET x STEP amp RESET x x STEP x 1 RESET x STEP amp RESET x x The PC board of the relay module contains a switchgroup SGB with eight switches The switches 1 3 are used for configuring the start signals going from the module whereas the switches 5 7 and 8 are used for configuring the blocking signals applied on the undervoltage stage in various protection relay units Switches 4 and 6 have no function in the relay module SPCU 3C14 Instructions for setting the switch group SGB are given in the user s manual of the protection relay unit and in the signal diagram of the relay Measured data The measured
44. it breaker if the voltage continues to rise When the characteristic curve A is selected the alarm level can be set low enough and still the voltage regulator is granted time enough to operate even during severe voltage fluctuations The undervoltage stage also trips the circuit breaker An unwanted operation of the under voltage stage during an autoreclose cycle can be inhibited with switch SG1 6 If switch SG1 6 1 the operation of the undervoltage stage is inhib ited when the voltage falls below 20 x U An unwanted operation of the undervoltage stage when the miniature circuit breaker trips has been inhibited by routing a control voltage from the auxiliary contact of the MCB to the relay s control input 10 11 Switch SGB 5 on the printed circuit board must be in position 1 as also switch SGR 1 The selector switches of the voltage relay SPAU 130 C can be set as follows Switch SG1 SPCU 3C14 SGB SPCU 3C14 SGR 1 0 three phase 0 not in use 1 control signal from minia ture circuit breaker MCB 2 1 U gt start time 30s 0 not in use 1 start signal of stage U lt to output relay D 3 1 U gt inverse charact 0 notin use 1 start signal of stage U gt to output relay D 4 0 0 not in use 0 notrip signal of stage U lt to curve A output relay D 5 0 1 blocking of stage t lt 1 trip signal of stage U lt to output relay C 6 1 U lt stage blocked 0 not in use 0 notrip signal of stage U lt to if U lt 2
45. lier for stage U gt Remote setting percentage of 23 R W 0 999 start value for stage U lt Remote setting percentage of S24 R W 0 999 operate time for stage U lt Remotely set checksum of 525 R W 0 255 switchgroup SG1 Data Code Data Values direct Remotely set start value for stage U gt S31 R 0 8 1 6 Un Remotely set operate time or time 32 R 0 05 100 s or multiplier for stage U gt 0 05 1 00 Remotely set start value for stage U lt 533 R 0 4 1 2 x Un Remotely set operate time for stage U lt S34 R 1 01208 Remotely set checksum of 35 R 0 255 switchgroup SG1 Max voltage measured when Vil R D999 x Un stage U gt started Max voltage measured after resetting V2 R 09 99 x Un Min voltage measured when V3 R 09 993 Un stage U lt started Min voltage measured after resetting V4 R 0999 Uh Number of starts of overvoltage stage V5 R 0 255 Number of starts of undervoltage stage V6 R 0 255 Duration of the latest start V7 R 0 100 event of stage U gt Duration of the latest start V8 R 0 100 event of stage U lt Resetting of output relays and viol W 1 output relays and operation operation indicators indicators reset Resetting of output relays operation vio W 1 output relays operation indicators and erasing of recorded data indicators reset and registers simultaneously codes V1 V8 erased Remote control of settings V150 RW 0 setting with knobs S11 S15 activated 1 remote settings 31 835 activa
46. ng of the undervoltage stage erases the old value from the register and a new value is recorded On operation of the under voltage stage the value gathering sequence is stopped and the lowest measured value during the starting period is recorded Register 4 contains the minimum value of the voltages measured after a relay reset as a multiple of the rated voltage The registered value is updated any time when the value of the meas ured voltage falls below the registered voltage value Register 4 must be erased by a command given via the serial bus or by pressing the STEP and RESET push buttons simultaneously The number of startings register 5 and 6 pro vides information on the occurance of overvoltage and undervoltage in the network It must however be noted that when the start time setting is 0 1 s for instance starting motors can cause the undervoltage stage to start and the value of register 6 to be updated In the same way the overvoltage stage may start on tempo rary overvoltages caused by for instance by a voltage regulator Registers 7 and 8 show the duration of the latest start situation of the stages expressed in per cent of the set operate time or of the calculated operate time for the overvoltage stage Any new start erases the old value and a new value is recorded If the stage operates the register value will be 100 The values of register 7 and 8 provide informa tion about the duration of the voltage varia
47. nted operations for instance during an auto reclose sequence starting and tripping of the undervoltage stage can be blocked by turning switch SG1 6 into the position 1 The blocking function is activated if the meas ured signal falls to a value below0 2x Un This function is illustrated in Fig 1 urun U Un Us Un O 2 Un 331 te Tal 3i ts T52 1 a 1 a t 1 a 1 a t Fig 1 Operation of the combined overvoltage and undervoltage relay module SPCU 3C14 when the function of the undervoltage stage is internally blocked SG1 6 1 Tripping TS2 of the U lt stage alone may be blocked by applying a blocking signal BTS2 on the stage The blockings are programmed indi vidually for the various relay assemblies by means of the switchgroup SGB on the relay module Programming instructions for the SGB switch group are given in the user s manual of the concerned protection relay unit Also see the signal diagram of the concerned protection relay unit Block diagram Uzi BS Ba Wis i loz BSZ i 5 T51 561 3 1 7 Re So1 4 i Us 501757 a RE alt F p a Eq amp ff e E i SG1e7 a tk l 561 6 P i THE Oe S61 a Bi ETS2 SPCU 3C14 i Fig 2 Block diagram for combined overvoltage and undervoltage relay module SPCU 3C14 U12 U23 U31 BS1 BS2 BS3 BTS2 SG1 SG2 SGB SS1 TS1 SS2 TS2 Y R NOTE Measured phas
48. of the address code of a relay module and the data transfer rate for the serial communication The initial value for the address code is 146 a Press push button STEP until register address A appears on the display b Press the RESET button for about 10 s until the right most digit starts flashing Press the STEP button repeatedly to set the digit to the value desired d Press the RESET button to make the middle of the green digits flash e Set the middle address digit by means of the STEP button f Press the RESET button to make the left most green digit flash g Set the digit by means of the STEP button h Store the set address number in the memory of the relay module by pressing the RESET and STEP button simultaneously At the moment the information enters the memory the three green dashes flash in the display i e A i Leave the setting mode by pressing the RESET button for about 10 s until the display stops flashing 21213 Then enter submenu 1 of register A by pressing the RESET button for approx one second The register address A is then replaced by a flashing 1 This submenu is used for setting the data transfer rate of the serial communication k The data transfer rate for the serial communica tion is set and stored in the same way as the address see sections b i except that the con tinuously glowing register address has been re placed by a flashing 1
49. of the power supply and I O module inserted in the relay is marked on the system front panel of the relay Technical data modified 2002 04 Energizing inputs Terminals Rated voltage Un Continuous voltage withstand Power consuption at U Rated frequency f acc to order Output contact ratings Trip contacts Terminals Rated voltage Carry continuously Make and carry for 0 5 s Make and carry for 3 s Breaking capacity for dc when the manoeuvre circuit time constant L R lt 40 ms at the control voltages 220 V de 110 Vdc 48 Vdc Signalling contacts Terminals Rated voltage Carry continuously Make and carry for 0 5 s Make and carry for 3 s Breaking capacity for dc when the signalling circuit time constant L R lt 40 ms at the control voltages 220 Vdc 110 V dc 48 Vdc External control input blocking Terminals Control voltage Current consumption when active Auxiliary supply voltage Power supply and I O modules and voltage ranges type SPTU 240 S1 type SPTU 48 S1 Power consumption under quiescent operating conditions 100 V 110V 13 14 16 17 19 20 13 15 16 18 19 21 100 V 110 V 2xU 2xU lt 0 5 VA 50 Hz or 60 Hz 65 66 68 69 250 V ac dc 5A 30A 15A 1A 3A 5A 70 71 72 77 78 80 81 250 V ac dc 5A 10A 8A 0 15 A 0 25 A 1A 10 11 18 265 V dc or 80 265 V ac 2 20 mA 80 265 V ac dc 18 80 V dc 4 W 6 W Combined overvolta
50. or enhanced system reliability and availability Auto diagnostic fault indication to facilitate repair after detection of permanent internal relay fault Powerful software support for parametrization and supervision of the relay Application The three phase voltage relay SPAU 130 C is intended to be used for overvoltage and under voltage protection and supervision in distribu tion substations The relay can also be used for overvoltage and undervoltage protection of gen erators motors and transformers Generally the relay measures the three phase to phase voltages of the system but it can also be programmed for single phase measurement The overvoltage stage can be given definite time characteristic or inverse time characteristic The undervoltage stage features definite time char acteristic alone The operation of the undervoltage stage can be blocked by means of an external control signal The relay forms a whole including an over voltage stage an undervoltage stage as well as flexible trip and alarm functions Description of function The combined overvoltage and undervoltage relay SPAU 130 C is a secondary relay that is connected to the voltage transformers of the protected object The relay generally measures the three phase to phase voltages of the system On operating the relay trips the circuit breaker and or provides alarm in accordance with the selected functions and given configuration When one of the
51. perate time t gt or operation characteristic curve 0 0 0 Definite time 0 05 1 00 s 0 0 1 Definite time 0 5 10 0 s 0 1 0 Definite time 0 5 10 0 s 0 1 1 Definite time 5 100 s 1 0 0 Inverse time Curve A 1 0 1 Inverse time Curve A 1 1 0 Inverse time Curve B 1 1 1 Inverse time Curve B Switch Function SG1 6 Selection of automatic blocking of starting and tripping of the undervoltage stage U lt When SG1 6 0 the undervoltage stage always operates when a measured voltage falls below the setting value When SG1 6 1 starting and tripping of the undervoltage stage are blocked if one of the measured voltages falls to a value below 0 2 x Uj This feature can be used for preventing unnecessary startings and trippings during auto reclose sequences SG1 7 Start time selection for the undervoltage stage U lt When SG1 7 0 the start time is 0 1 s When SG1 7 1 the start time is 30 s SG1 8 Selection of the setting range for the operate time t lt of the undervoltage stage U lt When SG1 8 0 the setting range of the operate time is 1 0 12 0s When SG1 8 1 the setting range of the operate time is 10 120 s Switchgroup SG2 is a so called software switch group which is located in the third submenu of the checksum register of switchgroup SG1 The mode of operation i e self reset or manually reset of the LED indicators U gt and U lt is determined by the switches of switc
52. phase to phase voltage or several exceed the set start value U gt of the overvoltage stage the overvoltage stage starts delivering a start signal SS1 When at definite time mode of operation the set operate time t gt or at inverse time mode of operation the calcu lated operate time t gt has expired the overvoltage stage operates delivering a trip signal TS1 In the same way the undervoltage stage starts deliver ing a start signal SS2 when the measured value goes below the start value U lt and when the set operate time t lt has expired the undervoltage stage operates delivering a trip signal TS2 The overvoltage and undervoltage relay is gen erally used as a three phase relay But by means of a selector switch the relay can be configured as a single phase relay The overvoltage stage can be given definite time characteristic or inverse time characteristic When inverse time characteristic is selected two sets of curves named A and B are available The undervoltage stage has definite time charac teristic Tripping of the undervoltage stage can be blocked by means of a control signal BS applied to the optically isolated external control input of the relay The overvoltage and undervoltage relay is pro vided with two output relays for tripping and three output relays for signalling purposes One of the signalling relays is dedicated for the selfsupervision system of the relay TRIP
53. ri of generator circuit breaker stages I gt and I gt gt 68 69 Tripping of excitation circuit breaker and shut down stage I gt gt 80 81 Signal on operation of stage I gt and I gt gt 77 78 Start signal from stage I gt to the drop off delayed auxiliary relay 70 71 72 Self supervision alarm signal Recorded data and fault analysis 16 The registers of the overvoltage and under voltage relay contain useful information about the behaviour of the power network during normal service and in a fault situation On starting of the overvoltage stage the maxi mum value of the measured voltages is recorded in register 1 as a multiple of the rated voltage Any new starting of the overvoltage stage erases the old value from the register and a new value is recorded On operation of the overvoltage stage the value gathering sequence is stopped and the highest measured value during the start ing period is recorded Register 2 contains the maximum value of the voltages measured after a relay reset as a multiple of the rated voltage The registered value is updated any time when the value of the meas ured voltage exceeds the registered voltage value Register 2 must be erased by a command given via the serial bus or by pressing the STEP and RESET push buttons simultaneously On starting of the undervoltage stage the mini mum value of the measured voltages is recorded in register 3 as a multiple of the rated voltage Any new starti
54. rminals Contacts Function 13 14 Phase to phase voltage U42 100 V 13 15 Phase to phase voltage U42 110 V 16 17 Phase to phase voltage U23 100 V 16 18 Phase to phase voltage U23 110 V 19 20 Phase to phase voltage U3 100 V 19 21 Phase to phase voltage U3 110 V 10 11 External blocking signal input 61 62 Auxiliary power supply When DC voltage is used the positive pole is connected to terminal 61 65 66 Trip output 1 for stages U gt and U lt TRIP 1 68 69 Trip output 2 for stages U gt and U lt TRIP 2 80 81 Signal on tripping of stages U gt and U lt SIGNAL 1 77 78 Signal on tripping of stage U lt starting of stages U gt and U lt START 1 70 71 72 Self supervision IRF alarm output Under normal conditions the contact interval 70 72 is closed When the auxiliary voltage disappears or an internal fault is detected the contact interval 71 72 closes Protective earth terminal The combined overvoltage and undervoltage relay SPAU 130 C is connected to the optical fibre communication bus by means of the bus connection module SPA ZC 17 or SPA ZC 21 The bus connection module is connected to the D type connector SERIAL PORT on the rear panel of the relay The opto connectors of the optical fibres are plugged into the counter con nectors Rx and Tx of the bus connection mod ule The selector switches of the bus connection module by means of which the communication mode is selected
55. s provided with this quality See section Display Programming switches SG1 Part of the settings and the selections of the operating characteristics for the relay modules in various applications are made with the pro gramming switches SG1 on the front panel The indicator of the switchgroup glows when the checksum of the switchgroup is shown on the display The checksum can be used for checking that the switches are properly set Fig 2 gives an example of calculating the checksum if a fx i i aj o js we 09 a3 1 x 4 4 4 1 x 8 8 5 1 x 16 16 e 1 x 32 32 7 1 x 4 64 a o x 128 Checksum 125 Switch positions I gt gt Fig 2 Example of calculating the checksum of programming switchgroup SG1 When the checksum calculated according to the example is equal to the checksum indicated on the display of the relay module the switches are properly set The function of the programming switches of the individual measuring relay modules is speci fied in the description of the module concerned Setting knobs Most of the operating values and operating times are set by means of the setting knobs on the front panel of the relay module Each setting knob has its own LED indicator which glows when the concerned setting value is shown on the display If a setting knob is turned while the display is showing another measured or set value the value being set automatically appears on
56. t the IRF LED on the front panel of the module is lit and at the same time the normally operated signal relay of the self supervision system drops off In most fault situations an auto diagnostic fault code is shown on the relay display The fault code cannot be reset The fault code consists of a red digit one 1 and a green code number that indicates the fault type The fault code should be recorded and stated when service is ordered The fault codes of the over undervoltage relay module SPCU 3C14 are explained in the fol lowing table Fault code Explanation 50 Faulty working memory RAM 4 Faulty output relay path or missing output relay card 30 Faulty program memory ROM 195 Too low a value in reference channel with multiplier 1 131 Too low a value in reference channel with multiplier 5 67 Too low a value in reference channel with multiplier 25 203 Too high a value in reference channel with multiplier 1 139 Too high a value in reference channel with multiplier 5 75 Too high a value in reference channel with multiplier 25 253 No interruptions from the A D converter General characteristics of C type relay modules User s manual and Technical description Self supervision alarm indicator Indicators for measured values Internal Relay Fault Display 1 3 digits Setting knob 1 with indicator 1 5 Step push button STEP Stage 1 0 5 Setting knob 2 i with indi
57. t or not The self supervision alarm indicator IRF indi cates that the self supervision system has de tected a permanent fault The indicator is lit with red light shortly after a permanent internal fault has been detected At the same time a control signal is put forward to the output relay of the self supervision system Additionally in most fault cases a fault code indicating type of fault appears on the display of the relay module The fault code is to be recorded to serve the subsequent fault location and repair actions Settings The setting values are shown by the three rightmost green digits of the display The LED indicator below the setting knob shows when lit the setting value currently being shown on the display Start value of the U gt stage as a multiple of the rated voltage of the relay energizing Operate time of the U gt stage expressed in seconds at definite time mode of k gt operation The required setting range 0 05 1 00 s 0 5 10 0 sor 5 100 s is selected with switches SG1 4 and 5 At IDMT mode of operation the setting range of the Start value of the U lt stage as a multiple of the rated voltage of the relay energizing Operate time of the U lt stage expressed in seconds The setting range is selected with U gt U input Setting range 0 8 1 6 x Ug t gt s multiplier k gt is 0 05 1 00 U lt U input Setting range 0 4 1 2 x Up t lt s switch SG1 8 alternatives 1 1
58. te time t gt or time N42 Remotely set S97 Remotely set Ww amp multiplier k of stage U gt Z N percentage p2 t 71 value t gt x p2 aA ct R a re D 47 Remotely set N57 Remotely set Q Set start voltage U lt 7 percentage p3 t ee value U lt x p 5 i t s 4 Remotely set 57 Remotely set Q Set operate time t lt of stage U lt BAS percentage p4 Tt aga e value t lt x p4 mot t A r Checksum of N47 Remotely set 47 Remotely set N47 Checksum of 4 7 Checksum of I 1s 2 gale qe N switchgroup SG1 laa aR checksum t Big A checksum 3 switchgroup se2 ARR switchgroup sos mt E 1 Max voltage measured during the last start of U gt N ut 2 Max voltage measured after reset rae T 3 Min voltage measured during the last start of U lt E p 4 F 4 Min voltage measured after reset a R w 5 Number of starts of overvoltage stage A Ro f D 6 Number of starts of undervoltage stage st S 7 Duration of the latest start event of stage U gt 8 Duration of the latest start event of stage U lt Incoming i a7 0002 ar SSi p m TSI p m S82 TS2 0 blockings Aides ai I L Slee Relay module 2 Data transfer 7 Bus communication S34 p d A address code Ps rate Bd t 2 monitor 0 255 mann sewn t Fig 4 Main menus and submenus of the combined overvoltage and undervoltage relay module SPCU 3C14 The procedure for entering a submenu ora set scribed in detail in General ch
59. ted Event mask word V155 R W 0 255 see section Event codes Manual reset or self reset mode of V156 R W 0 15 see section operation of the LED indicators SG2 Selector switches Programming push buttons SG3 V157 R W 0 1 see section Selector switches Opening of password for vio W 1 999 remote settings Changing or closing of password Vl6l W 0 999 for remote settings Activation of self supervision function V165 W 1 self supervision output is activated and IRF indicator turns on in about 5 seconds whereafter the self super vision system and the IRF indicator reset Internal fault code V169 R 05 2055 Data communication address V200 W 1 254 of the relay module Program version V205 R 072_ 15 Data Code Data Values direct Type designation of the relay module F R SPCU 3C14 Reading of event register L R Time channel number and event code Re reading of event register B R Time channel number and event code Reading of module status data C R 0 normal state Resetting of module status data Time reading or setting T 1 module been subject to automatic reset 2 overflow of event register 3 events 1 and 2 together W 0 resetting R W 00 000 59 999 s R data to be read from the module W data to be written to the module The data transfer codes L B C and T have been reserved for the event data transfer between the relay module and the control data communi cator The event register c
60. the setting knob settings the main menu contains the measured current values as well as the registers 1 5 as well as 0 and A The remote setting percentage and remote setting value are located in the submenus for the settings and are activated on the display by pressing the RESET button The registers of the main menu and the submenus also contain parameters to be set The settings are made in the so called setting mode which is accessible from the main menu ora submenu by pressing the RESET button until the digit at the extreme right starts flashing about 10 s The flashing digit is set by means of the STEP button The flashing is moved on from digit to digit by pressing the RESET button A set value is stored in the memory by pressing the push buttons STEP and RESET simultane ously In practice the RESET button must be pressed slightly in excess of the STEP button Return from the setting mode to the main menu or submenu is possible by pressing for about 10 s the RESET button until the green digits on the display stop flashing If the module is left in the setting mode it will return automatically to the start condition after about 5 minutes The values to be set in the setting mode are for instance the address code of the relay module and the data transfer rate for the serial commu nication Further the percentage values for the remote settings can be changed Example 1 Function in the setting mode Manual setting
61. tion with relay SPAU 130 C The selector switch positions are shown in the table on the following page The undervoltage stage of the relay trips the circuit breakers of the motor feeders connected to the busbar In this way the motors are pre vented from restarting at the same time on recovery of the voltage The operate time setting of the undervoltage stage is to be longer than the dead time of the high speed auto reclose cycle of the transmission network This prevents motors from tripping during short voltage interrup tions An unwanted operation of the undervoltage stage when the miniature circuit breaker MCB trips has been inhibited by routing a control voltage from the auxiliary contact of the MCB to the control input 10 11 of the relay Switch SGB 5 on the printed circuit board of the volt age relay module should be in position 1 as should also switch SGR 1 The overvoltage stage protects the motors and transformers connected to the busbars The overvoltage stage can be given inverse time characteristic When the characteristic curve B is selected the start voltage can be set relatively high without rendering to long an operate time at severe overvoltage The overvoltage stage and the undervoltage stage are both used for tripping The trip signal of the undervoltage stage is routed to the circuit breakers of the motor feeders The overvoltage stage operates the main circuit breaker The selector switches of the voltage
62. tions and how close to operation the overvoltage and undervoltage stages have been Furter informa tion is obtained about the function of the volt age regulator Register 2 and 4 provide information about the limits of of fluctuation of the busbar voltage during normal service Registers 1 and 3 as well as 7 and 8 facilitate the post fault analysis These registers provide in formation about the voltage levels in a network disturbance situation and how close to opera tion the overvoltage and undervoltage stages have been Secondary injection testing Relay testing both primary and secondary should always be performed in accordance with national regulations and instructions The protection relay incorporates an IRF func tion that continuously monitors the internal state of the relay and produces an alarm signal on detection of a fault According to the manufac turers recommendations the relay should be submitted to secondary testing at five years intervals These tests should include the entire protection chain from the instrument trans formers to the circuit breakers The secondary testing described in this manual is based on the relay s setting values during normal operation If necessary the secondary testing can be extended by testing the protection stages throughout their setting ranges As switch positions and setting values have to be altered during the test procedure the correct positions of switches and th
63. tta I7 M intenance and HE VIE sexapesty es sacsnonesavcusantastamesventves REE EREE EEES EERE 21 Exchange and spare Parts cin tide isa Sue ER EEN EEES ENEKE EEEa KTERE ESEN 21 Ordering MUDES ei E N Tee A E E E 21 Dimensionsand Mounting iroerarerriatort neeaaea R E EOE EE E 22 ier Taher iin AGN OH yas wereian es ctiainicineinudennincticsas sypictinulansadebouensudeamaueveicandveuetauiibeinueleatetns 22 The complete manual for the combined overvoltage and undervoltage relay SPAU 130 C includes the following submanuals Three phase overvoltage and undervoltage relay general part 1MRS 750638 MUM EN Overvoltage and undervoltage relay module SPCU 3C14 1MRS 750510 MUM EN General characteristics of C type relay modules 1MRS 750328 MUM EN Features Combined overvoltage and undervoltage pro Numerical display of setting values measured tection relay Three phase definite time or inverse time over voltage stage Three phase definite time undervoltage stage Control input for blocking of the function of the undervoltage stage by means of an external control signal Automatic blocking of the undervoltage stage on loss of energizing voltage Fully field configurable output relay functions Flexible matching of the relay to the intended protection application values recorded fault values indications etc Serial interface for bus connection module and optical fibre substation bus Continuous self supervision of relay hardware and software f
64. undervoltage relay module SPCU 3C14 Start and operation indicators Each stage has its own yellow red operation indicator Yellow light indicates starting of the operation stage and red light indicates that the stage has delivered a tripping signal The four LED indicators can independently of one another be given self reset or manual reset mode of operation with switches in switchgroup SG2 The manual reset mode means that the indicator remains lit after being switched on although the stage which controls the indica tor resets If for instance the yellow start indicator has been given self reset mode of operation and the red operation indicator manual reset mode of operation the yellow indicator is lit when the stage starts and it turns red if the stage operates When the stage resets after operation the red indication remains lit If the stage starts but does not operate the yellow indicator is lit during the starting and reset automatically when the stage resets The indica tors which have been given the manual reset mode are reset locally by pushing the RESET push button on the front panel or by remote control over the SPA bus using the command V101 or V102 See also table for switchgroup SG3 on page 7 in chapter Selector switches An unreset operation indicator does not affect the protective functions of the relay module The relay module is constantly operative re gardless of the indicators have been rese
65. values are presented with the data being presented are indicated by LED rightmost three green digits on the display The indicators on the front panel Indicator Measured data Ui The Uj2 voltage measured by the module expressed as a multiple of the rated voltage of the relay energizing input U23 The U3 voltage measured by the module expressed as a multiple of the rated voltage of the relay energizing input U3 The U3 voltage measured by the module expressed asa multiple of the rated voltage of the relay energizing input Recorded The leftmost red digit on the display indicates information the register address and the three rightmost digits the recorded information Register Recorded information STEP 1 The highest voltage value measured during the start sequence as a multiple of the rated voltage of the relay energizing input Any overvoltage stage start erases the old value and starts a new recording sequence The recording sequence is stopped on operation of the overvoltage stage and the highest value during the start sequence is found in the register 2 The highest voltage value measured as a multiple of the rated voltage of the relay energizing input The register value is updated as soon as the measured value exceeds the value alredy in the register Register 2 is erased with a command via the serial port or by pushing the STEP and RESET push buttons simultaneously The registered value is also er

SPAU 130 C Three-phase overvoltage and undervoltage relay

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