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6

Vector group
matching

Table 1. Matching of the power transformer
vector group, when the HV side of the power
transformer is star connected.

    1

2

   3      4

  5     6

      I                 II

(2

(3

Check-
sum   (

1

0

0

0

0

0

0

0

Yy6

Yy0

Yy0

Yy0

1

0

0

0

0

0

1

YNd7

YNd1

Yd1

Yy0

0

1

0

0

0

0

2

YNd11

YNd5

Yd5

Yy0

1

1

0

0

0

0

3

Yy0

Yy6

Yy6

Yy0

0

0

1

0

0

0

4

YNd1

YNd7

Yd7

Yy0

1

0

1

0

0

0

5

YNd5

YNd11

Yd11

Yy0

0

1

1

0

0

0

6

Yd5

Yd11

Yy0

Yd1

1

1

1

0

0

0

7

YNyn6

YNyn0

Yd1

Yd1

0

0

0

1

0

0

8

YNyn10

YNyn4

Yd5

Yd1

1

0

0

1

0

0

9

Yd11

Yd5

Yy6

Yd1

0

1

0

1

0

0

10

YNyn0

YNyn6

Yd7

Yd1

1

1

0

1

0

0

11

YNyn4

YNyn10

Yd11

Yd1

0

0

1

1

0

0

12

Yd1

Yd7

Yy0

Yd5

1

0

1

1

0

0

13

YNyn2

YNyn8

Yd1

Yd5

0

1

1

1

0

0

14

YNyn6

YNyn0

Yd5

Yd5

1

1

1

1

0

0

15

Yd7

Yd1

Yy6

Yd5

0

0

0

0

1

0

16

YNyn8

YNyn2

Yd7

Yd5

1

0

0

0

1

0

17

YNyn0

YNyn6

Yd11

Yd5

0

1

0

0

1

0

18

Yy0

Yy6

Yy0

Yy6

1

1

0

0

1

0

19

YNd1

YNd7

Yd1

Yy6

0

0

1

0

1

0

20

YNd5

YNd11

Yd5

Yy6

1

0

1

0

1

0

21

Yy6

Yy0

Yy6

Yy6

0

1

1

0

1

0

22

YNd7

YNd1

Yd7

Yy6

1

1

1

0

1

0

23

YNd11

YNd5

Yd11

Yy6

0

0

0

1

1

0

24

Yd11

Yd5

Yy0

Yd7

1

0

0

1

1

0

25

YNyn0

YNyn6

Yd1

Yd7

0

1

0

1

1

0

26

YNyn4

YNyn10

Yd5

Yd7

1

1

0

1

1

0

27

Yd5

Yd11

Yy6

Yd7

0

0

1

1

1

0

28

YNyn6

YNyn0

Yd7

Yd7

1

0

1

1

1

0

29

YNyn10

YNyn4

Yd11

Yd7

0

1

1

1

1

0

30

Yd7

Yd1

Yy0

Yd11

1

1

1

1

1

0

31

YNyn8

YNyn2

Yd1

Yd11

0

0

0

0

0

1

32

YNyn0

YNyn6

Yd5

Yd11

1

0

0

0

0

1

33

Yd1

Yd7

Yy6

Yd11

0

1

0

0

0

1

34

YNyn2

YNyn8

Yd7

Yd11

1

1

0

0

0

1

35

YNyn6

YNyn0

Yd11

Yd11

Power transformer
vector group

             Switchgroup SG1

Relay  connection
group

LV side

HV side

1)  When comparing the checksum displayed by the relay with the checksum of switches 1…6

the weighting factors of switch 7 and 8 must be added to the latter checksum.

2)  I refers to the basic coupling I of the current transformers, i.e. inside OR outside earthings,

c.f. application examples 1 and 3 of the description “Biased differential relay SPAD 330 C,

     34 SPAD 4 EN 1”

3)   Il refers to the basic coupling II of the current transformers, i.e. inside AND outside earthings,

c.f. application example 2 of the description “Biased differential relay SPAD 330 C,
34 SPAD 4 EN 1”

Содержание SPAD 330 C

Страница 1: ...rors of the C T s separately correctable on the HV and LV side of the power transformer Separately adjustable differential current high set instantaneous stage Stabilized operating principle prevents spurious function on faults occurring outside the area of protection Blocking function for prevention of spurious operations caused by con nection inrush currents based on the occurrence of the second...

Страница 2: ...s The current transformer secondary currents measured on either side of the protected object are desig natedI1 andI2 Undernormalserviceconditions that is when there is no fault in the protected area the I1 current is equal to the I2 current and the differential current Id 0 expression 1 Id I1 I2 1 In practice the differential current Id deviates fromzeroalsoundernormalserviceconditions When protec...

Страница 3: ... to rise by several tens of units of per cent Thisfactisconsideredinthebasicsetting Partial range 2 Therangebetween0 5xIn Ib 2 5xIn iscalled the influence area of the starting ratio s By setting the starting ratio it is possible to influence the slope of the characteristic curve in this area i e how big a change in the differentialcurrent inrelationtotheloadcurrent change is required for tripping ...

Страница 4: ...ted in such a way that the measurement of the differential current and a possible tripping decision are based only on current samples measured during the quarter cycle following the zero crossing of the HV and LV side phase currents This lowers the requirements on the current reproduction capability of the current transformers The differential relay is also provided with a high setinstantaneoussta...

Страница 5: ... I RF Self supervision Ul Differential relay module of L1 phase SPCD 3C21 U2 Differential relay module of L2 phase SPCD 3C22 U3 Differential relay module of L3 phase SPCD 3C23 U4 Output relay module SPTR 5B4 U5 Power supply module SPGU 240A1 SPGU 48B2 U6 Input output module SPTE 6B3 P1 S2 P2 P1 P2 S1 S2 S1 L1 L2 L3 SPAD 330 C SPAD 330 C ...

Страница 6: ...78 Signalling contact 70 71 72 Self supervision alarm contact Under normal service conditions the relay is energized and the contact gap 70 72 is closed When a fault occurs or the auxiliary voltage is interrupted the contact gap 71 72 closes The differential relay SPAD 330 C is provided for being connected to the fibre optic SPA data bus The connection is performed by using a SPA ZC series bus int...

Страница 7: ...om the Signal abbreviations English names of the signals as follows Abbreviation English equivalent I1 I2 Id Differential current Ib Bias restraint current In Rated current I2f 2nd harmonic or Ihr Harmonic restraint current TS Trip signal BS Blocking signal IRF Internal relay fault ENA Enable Rx Receiver channel Tx Transmitter channel R Reset S R Step and Reset STRÖMBERG SPAD 330 C I2f Id U1 SPCD3...

Страница 8: ...module The incoming and outgoing signals of the output relay module are firmly related to the module locations of the relay case The output signals from each module location are individually routed to the output relay module Therefore itisimportantthattherelaymodules are plugged into the relay case in the order illustratedinthefigureonPage1 Thisensures thatthefunctionoftherelaycorrespondstothe con...

Страница 9: ...bilizers of the concerned relay modules Fig 6 Voltage levels of the power supply module 1 A slow 8V 12V 12V 24V Uaux 80 265 V ac dc 18 80 V dc Unstabilized logics voltage Operation amplifier voltage Output relay coil voltage A green LED indicator marked Uaux on the system front plate is illuminated when the power supply module is in operation The supervision of the voltages supplying the electroni...

Страница 10: ...ion of a YNd11 connected power trans Example 1 former when the current transformers have in side earthings i e thecurrenttransformers have the basic connection type I Switch SG1 1 0 2 1 3 0 4 0 5 0 6 0 2 Setting of the matching of the power transformer vector group P1 S2 P2 P1 P2 S1 S2 S1 L1 L2 L3 SPAD 330 C SPAD 330 C ...

Страница 11: ...ected power transformer when the current transformers Example 2 have inside and outside earthings i e the currenttransformershavethebasicconnection type II Switch SG1 1 0 2 0 3 1 4 0 5 1 6 0 20 Setting of the matching of the power transformer vector group SPAD 330 C SPAD 330 C P1 S2 P2 S1 P2 P1 S1 S2 L1 L2 L3 SPAD 330 C B ...

Страница 12: ... transformers have the basic connection type I Switch SG1 1 0 2 1 3 0 4 1 5 0 6 0 10 Setting of the matching of the power transformer vector group With the adjacent setting the access of the earth fault current flowing in the primary circuit through the power transformer neutral is prevented from entering the energizing circuits of the differential relay SPAD 330 C SPAD 330 C P2 S1 P1 S2 P2 P1 S1 ...

Страница 13: ...f a Dyn11 connected power transformer when the current transformers have inside earthings i e the current transformers have the basic connection type I Switch SG1 1 1 2 0 3 0 4 1 5 0 6 0 9 Setting of the matching of the power transformer vector group SPAD 330 C SPAD 330 C P1 S2 P2 S1 P2 P1 S2 S1 L1 L2 L3 SPAD 330 C B ...

Страница 14: ...nected power transformer when the current transformers Example 5 have inside and outside earthings i e the currenttransformershavethebasicconnection type II Switch SG1 1 0 2 1 3 1 4 0 5 0 6 0 6 Setting of the matching of the power transformer vector group SPAD 330 C SPAD 330 C P1 S2 P2 S1 P2 P1 S1 S2 L1 L2 L3 SPAD 330 C ...

Страница 15: ... for 0 5 s 10 A Make and carry for 3 s 8 A Breaking capacity for dc when the control circuit time constant L R 40 ms at the control voltage levels 48 110 220 V dc 1 A 0 25 A 0 15 A Contact material AgCdO2 Auxiliary power module Power supply module type SPGU 240A1 80 265 V dc or ac type SPGU 48B2 18 80 V dc Burden of auxiliary supply under quiescent operating conditions 10 W 15 W Differential relay...

Страница 16: ...en themselves and to the relay frame as per SS 436 15 03 4 8 kV Environmental conditions Specified ambient service temperature range 10 55 C Temperature influence on the operating values of the relay over the specified ambient ser vice temperature range 0 2 C Long term damp heat withstand according to IEC 68 2 3 95 40 C 56 d a Transport and storage temperature range 40 70 C Degree of protection by...

Страница 17: ... and Uaux 18 80 V dc DA equals fn 60 Hz and Uaux 80 265 V ac dc FA equals fn 60 Hz and Uaux 18 80 V dc Information required with order Example 1 Type designation and title of SPAD 330 C biased differentialrelay 2 Rated frequency fn 50 Hz 3 Ordering number RS 621 001 AA 4 Auxiliary voltage Uaux 110 V dc 5 Accessories 2 raising frames type SPA ZX301 2 bus interface modules SPA ZC12 BB 2 fibre optic ...

Страница 18: ...ABB Automation ...

Страница 19: ...icator Stage 1 Setting knob 2 with indicator Setting knob 3 with indicator Stage 2 Setting knob 4 with indicator Self supervision alarm indicator Internal Relay Fault Display 1 3 digits Step push button STEP Programming switches SG1 Switchgroup indicator Reset push button RESET Start operation indicators ABB Automation General characteristics of C type relay modules User s manual and Technical des...

Страница 20: ...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 grammingswitchesSG1onthefrontpanel 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 proper...

Страница 21: ...dicate the measured set or stored value and the digit at the extreme left red the number of theregister Themeasuredorsetvaluedisplayed 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 ...

Страница 22: ...enu and they are displayed by pressing the STEP button In addition to 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 Setting mode Theregistersofthemainmenuandth...

Страница 23: ...ber 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 j Then enter submenu 1 of register A by pressing the RESET button for approx one second The register address ...

Страница 24: ...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 moduleasrequiredbytheserialcommunication system Example 1 on page 4 shows how the address code is altered Submenu 1 of register A contains the data transfer rate value expressed in kilobaud for the seri...

Страница 25: ...ping is activated by simultaneouspressingofthepush buttonsSTEP and RESET The signal remains activated as long as the two push buttons are being pressed Theself supervisionoutputisactivatedbypress ingtheSTEPbuttononcewhennosettingknob 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 t...

Страница 26: ...neously to activate tripping of stage 1 e g the I stage of the overcurrent module SPCJ 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 torofthethirdorfourthsettingstartsflashingto indicate that the concerned stage has been acti vated g To activate the self supervision output step to wards the...

Страница 27: ...ided 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 t...

Страница 28: ...10 ABB Automation ...

Страница 29: ...elector switches on the relay front plate Adjustable basic setting and starting ratio Additional adjustable instantaneous high set stage Separately adjustable corrections of the transforming ratios of the high voltage and low voltage side current transformers Automatic blocking of relay operation based on the appearance of the second harmoniccomponentofthedifferential current Features D ABB Networ...

Страница 30: ...ase shifting and on subtraction of phase currents attenuated with a factor 3 Because of the phase angle matching all currents must be routed to each differential relay module When at rated load the secondary currents of the current transformers are lower than the rated current of the relay they can be matched without steps and separately on either side of the power transformer As the differential ...

Страница 31: ...isautomaticallyhalvedbecause in a situation like this a fault exists inside the protectedrange Atthesametimetheblockings are restrained Note The blocking signals BS IN and BS OUT canblockthedifferentialcurrentstageId only The operation of the high set stage Id is not blocked By means of switch SG1 7 the tripping signal TS can be given a so called latching feature When latched the tripping signal r...

Страница 32: ...ode is reset from the display at the next pressing of the STEP or the RESET push button When a fault occurs the fault code should be written down on a piece of paper and stated when overhaul is ordered The differential relay modules are provided with a yellow red operation indicator When the differential relay module issues a tripping signal to the circuit breaker the operation indicator is lit wi...

Страница 33: ...ection potentiometers I1 In andI2 In Thesesettingsforcorrectingthetrans forming ratio are also taken into account in the values shown on the display of the module Example 1 Protected object 110 kV 10 5 kV power trans former with the rated power Sn 40 MVA The high voltage side and low voltage side rated load currents I1n and I2n are I1n Sn 3 x U1n 40 MVA 3 x 110 kV 210 A I2n Sn 3 x U2n 40 MVA 3 x 1...

Страница 34: ... YNd7 YNd1 Yd7 Yy6 1 1 1 0 1 0 23 YNd11 YNd5 Yd11 Yy6 0 0 0 1 1 0 24 Yd11 Yd5 Yy0 Yd7 1 0 0 1 1 0 25 YNyn0 YNyn6 Yd1 Yd7 0 1 0 1 1 0 26 YNyn4 YNyn10 Yd5 Yd7 1 1 0 1 1 0 27 Yd5 Yd11 Yy6 Yd7 0 0 1 1 1 0 28 YNyn6 YNyn0 Yd7 Yd7 1 0 1 1 1 0 29 YNyn10 YNyn4 Yd11 Yd7 0 1 1 1 1 0 30 Yd7 Yd1 Yy0 Yd11 1 1 1 1 1 0 31 YNyn8 YNyn2 Yd1 Yd11 0 0 0 0 0 1 32 YNyn0 YNyn6 Yd5 Yd11 1 0 0 0 0 1 33 Yd1 Yd7 Yy6 Yd11 0 1...

Страница 35: ... Yy6 0 0 0 1 1 0 24 Dyn11 Dyn5 Yy0 Yd7 1 0 0 1 1 0 25 Dd0 Dd6 Yd1 Yd7 0 1 0 1 1 0 26 Dd4 Dd10 Yd5 Yd7 1 1 0 1 1 0 27 Dyn5 Dyn11 Yy6 Yd7 0 0 1 1 1 0 28 Dd6 Dd0 Yd7 Yd7 1 0 1 1 1 0 29 Dd10 Dd4 Yd11 Yd7 0 1 1 1 1 0 30 Dyn7 Dyn1 Yy0 Yd11 1 1 1 1 1 0 31 Dd8 Dd2 Yd1 Yd11 0 0 0 0 0 1 32 Dd0 Dd6 Yd5 Yd11 1 0 0 0 0 1 33 Dyn1 Dyn7 Yy6 Yd11 0 1 0 0 0 1 34 Dd2 Dd8 Yd7 Yd11 1 1 0 0 0 1 35 Dd6 Dd0 Yd11 Yd11 1 2...

Страница 36: ...is possible to move on to the so called test mode where the blocking and tripping signals can be activated one by one For further details see description General characteristics of C type relay modules A Address code of the differential relay module The address code which is required by the serial communication system is set to zero unless the serial communication system is used A subroutine of th...

Страница 37: ...nt I1 0 0 000 Output test A 3 Baud rate 1 2 Value adjustable in the setting mode Blocking state Module address Bus trafic counter Password Remote setting percentage p2 1 2 Remotely set value S x p2 Remote setting percentage p1 1 2 Remotely set value P x p1 Remotely set checksum 1 2 Remotely set checksum 1 3 4 5 Differential current when tripped Maximum value of the bias current Maximum value of th...

Страница 38: ... of In Starting ratio s setting range 10 50 HV side CT transforming ratio I1 In correction setting range 0 5 1 0 LV side CT transforming ratio I2 In correction setting range 0 5 1 0 Restraint threshold of the second harmonic setting range 10 20 x Id Operation accuracy 5 of set value Operating time 20 50 ms High set stage Id Starting current Id setting range 20 30 x In Operation accuracy 5 of maxim...

Страница 39: ...1 E4 and the events represented by these can be included in or excluded from the event reporting by writing over the SPA bus an event mask V155 to the module The event mask is a binary number given in the form of a decimal number The event codes E1 E4 are represented by the values 1 2 4 or 8 The event mask is obtained by multiplying the above numbers either by 0 event not included in the reporting...

Страница 40: ...nt I2 R 0 50 x In Load current measured on the LV I3 R 0 50 x In side and corrected by the CT transforming ratio I2 In Measured 2nd harmonic component I4 R 0 33 x In Harmonics blocking signal from I5 R 0 no blocking the other phase modules 1 blocking input active Output data Harmonics blocking O1 R 0 no blocking 1 blocking control alert Tripping O2 R 0 no tripping 1 tripping control active Setting...

Страница 41: ...latching SG1 7 and block ing mode SG1 8 selection Potentiometer setting of the cor S16 R 0 5 1 0 rection value I1 In of the trans forming ratio of the HV side current transformers Potentiometer setting of the cor S17 R 0 5 1 0 rection value I2 In of the trans forming ratio of the LV side current transformers Remotely set percentage of the S21 R W P 0 999 basic setting p Remotely set percentage of ...

Страница 42: ...Other data Remote resetting of latched V101 W 1 resetting output relays Remote resetting of latched V102 W 1 resetting output relays and memorized data Effectuation of remote V150 R W 0 local settings settings S11 S15 effectuated 1 remote settings S31 S35 effectuated Event mask word V155 R W 0 15 see section Event codes Opening of the password for V160 W 1 999 the remote settings Changing or closi...

Страница 43: ...ce unsuccessfully read with an L command The B command may be repeatedifrequired Generallythestationlevel data communicator continuously reads the event data and transfers the data further to an output device Normally the event register of the unit is empty At the same time the data communicator resets diverging status information sothatthisinformationisnormally zero The setting values S1 S7 are s...

Страница 44: ...ABB Automation ...

Страница 45: ...liary output relay module the system panel has to be removed by undoing the four fixing screws The modules are pulled out of the case by using the handle on the front of the module When removing the output relay module the flat cable connecting the module and the mother PC board has to be discon nected at the module side The input output module is bolted to the rear of the case It contains the ter...

Страница 46: ...ivered on separate order The relay is fixed to the mounting panel by means of four mounting brackets The collar is providedwitharubbergasketprovidingaIP54 degree of protection between the case and the mounting panel The cover is locked with two sealable finger screws The rubber gasket between the cover and the collar ensures that the cover too fulfills the IP 54 requirements The opening angle of t...

Страница 47: ...resetting The fault code should be recorded and stated when ordering service The self supervision system output contact of the relay assembly operates on the circuit opening principle Thus an auxiliary voltage failure also leads to an activation of the self supervision alarm Mostly a fault can be eliminated by changing one of the modules of the relay assembly Forcompleteoperationaltestingofaprotec...

Страница 48: ...1MRS 750328 MUM EN ABB Substation Automation Oy P O Box 699 FIN 65101 VAASA Finland Tel 358 0 10 22 4000 Fax 358 0 10 22 41094 www abb com fi ...

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