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Siemens SIPROTEC 7SS52, Operation Manual

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Siemens SIPROTEC 7SS52 Operation Manual Download Page 91

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Installation instructions

5

5 - 9

Siemens AG

⋅

May 1998

5.3

Configuration examples

The 7SS52 can be used for protecting busbar confiĆ

gurations with up to 3 main busbars and one transfer

(bypass) busbar or 4 main busbars and up to 48 bays.

For configuration of the up to

D

12 busbar sections (including up to 4 transfer busĆ

bar sections) and

D

12 bus coupler sections

the busbar sections are numbered from left to right

from 1 to 12 and the bus coupler sections from 13 to

24, beginning with the 1st main busbar up to the

transfer busbar or 4th main busbar.
As an example, Fig 5.6 shows the configuration data

for a triple busbar with transfer busbar. For each main

busbar the number of corresponding busbar sections

is parameterized (

DA 4900/ZE

).

A bus coupler section is a busbar section serving ex-

clusively for coupling busbar sections and containing

no feeders. They normally appear in combiantion with

bus couplers. An example is shown in Fig 5.7.

-Q1 -Q2 -Q3

-Q7

BB1 BZ1
BB2 BZ3
BB3 BZ5

-Q9

-Q2 -Q3

-Q7

-1T

-Q10 -Q20 -Q30

-Q1 -Q2 -Q3

-1T

-Q1 -Q2 -Q3

-Q7

-1T

-Q9

-Q1 -Q2 -Q3

-Q7

-1T

-Q11

-Q31

7

-Q10 -Q20 -Q30

BZ8

-Q10 -Q20 -Q30

BZ2
BZ4
BZ6

-1T

-Q1

-Q71

-Q21

1

2

3

4

8

5

6

9

Bay number

BB4 BZ7

2)

1)

Configuration:

DA 5404

BB-ISOLAT4 = TB-Isolator

DA 4900

BB-configuration

DA 4901

BB01/BZ01

DA 4902

BB01/BZ02

DA 4903

BB02/BZ03

DA 4904

BB02/BZ04

DA 4905

BB03/BZ05

DA 4906

BB03/BZ06

DA 4907

BB04/BZ07

DA 4908

BB04/BZ08

1)

in-side CT

2)

out-side CT

Bay

(XX)

Type of bay

Designation ISOL1: Axx

(DA XX07)

ISOL2: Axx

(DA XX08)

ISOL3: Axx

(DA XX09)

ISOL4: Axx

(DA XX10)

ISOL5: AXX

(DA XX11)

CT location

(DA XX04)

01

Coupler

2.1

BZ1

BZ3

BZ5

non existent

non existent

BB-side

02

Coupler

2.2

BZ1

BZ3

BZ5

BZ7

non existent

no CT

03

Coupler

3.1

BZ1

BZ3

BZ5

non existent

non existent

BB-side

04

Coupler

3.3

BZ2

BZ4

BZ6

non existent

non existent

no CT

05

Coupler

5.1

BZ2

BZ4

BZ6

non existent

non existent

BB-side

06

Coupler

5.2

BZ2

BZ4

BZ6

BZ8

non existent

no CT

07

Outgoing feeder 1.0

BZ1

BZ3

BZ5

BZ7

existent

line-side

08

Outgoing feeder 4.0

BZ2

BZ4

BZ6

BZ8

existent

BB-side

09

Sectionalizer

3.2

BZ01/BZ02

BZ03/BZ04

BZ05/BZ06

BZ07/BZ08

non existent

no CT

         

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Summary of Contents for SIPROTEC 7SS52

Page 1: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 2: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 3: ... Siemens AG 1998 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 4: ...Trade marks Liability waiver Copyright Warranty Subject to technical alteration w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 5: ...cy to be met in connection with installation operation or maintenance Should further information be desired or should partiĆ cular problems arise which are not covered suffiĆ ciently for the purchaser s purpose the matter should be referred to the local Siemens sales office Qualified personnel has to be trained for assemĆ bling connection commissioning and operation of the product and has to have ...

Page 6: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 7: ... 7 Measuring and testing functions 2 5 2 3 8 Operational and fault events 2 6 2 3 9 Self monitoring 2 6 2 4 Versions 2 6 2 4 1 Bay units 2 6 2 4 1 1 7SS521x 5DA00 xAA0 for panel surface mounting 2 6 2 4 1 2 7SS521x 5CA00 xAA0 for panel or cubicle flush mounting 2 7 2 4 2 Master unit 2 7 2 4 2 1 7SS5200 xAxx0 0AAx in subrack ES902C SIPAC 2 7 2 4 2 2 7SS5200 xBxx0 0AAx in wall mounted casing 2 8 2 5...

Page 8: ... Isolator mimic 4 13 4 5 1 Preferential treatment during busbar coupling via isolators 4 13 4 5 2 Processing of the isolator running status 4 13 4 5 3 Isolator treatment during auxiliary voltage supply failure 4 13 4 5 4 Treatment of the isolator states in the event of wire breakage 4 14 4 5 5 Bypass transfer busbar operation 4 14 4 5 6 Status of the feeder isolator 4 17 4 6 Circuit breaker failur...

Page 9: ... 7 6 1 Alarm relays and indications 4 31 4 7 6 2 Operation and indication 4 31 4 7 7 Fault recording 4 32 4 7 8 Monitoring functions 4 32 4 7 8 1 Hardware monitoring 4 32 4 7 8 2 Software monitoring 4 33 4 7 8 3 Supervision of the external CT circuits differential current supervision 4 34 4 7 8 4 Isolator supervision 4 35 4 7 8 5 Supervision of CB failure protection initiation and release 4 35 4 7...

Page 10: ...6 5 6 2 3 4 Common data station configuration block 54 6 8 6 2 3 5 Configuration of the busbar block 49 6 9 6 2 3 6 System data 6 10 6 2 4 Settings 6 12 6 2 4 1 Settings for the busbar differential protection 6 12 6 2 4 1 1 Settings for the pick up characteristic block 61 6 12 6 2 4 1 2 Settings for the differential current supervision block 63 6 14 6 2 4 2 Settings for the circuit breaker failure...

Page 11: ...Marshalling of the binary inputs block 61 6 37 6 4 2 3 Marshalling of the alarm relay block 62 6 40 6 4 2 4 Marshalling of the LED indications block 63 6 41 6 4 2 5 Marshalling of the command relays block 64 6 43 6 4 2 6 Setting of function parameters block 11 6 44 6 4 3 Test and control function block 40 6 45 6 4 4 Read out of operational measured values block 57 6 46 6 5 Testing and commissionin...

Page 12: ...t release of the bay trip command 6 58 6 6 Commissioning with primary values 6 59 6 6 1 Checking the current transformer polarity with the load current 6 59 6 6 2 Checking the connections of the circuit breaker failure protection initiation inputs 6 60 6 6 3 Checking the alarms and trip signals 6 60 6 6 4 Switching the protection into service 6 60 7 1 Maintenance recommendation 7 1 7 2 Fault analy...

Page 13: ... for surface mounting all dimensions in mm 2 11 Figure 2 5 Mechanical dimensions 7XP2040 2 for panel or cubicle flush mounting all dimensions in mm 2 12 Figure 2 6 Connection plug rear view for flush mounted casing example 2 13 Figure 2 7 Mechanical dimensions of the subrack 2 14 Figure 2 8 Mechanical dimensions of the subrack 2 15 Figure 2 9 Mechanical dimensions of the surface mounted casing 2 1...

Page 14: ...with only one bus coupler current transformer 4 27 Figure 4 25 Short circuit in the dead zone 4 27 Figure 4 26 Short circuit in the dead zone with the CB open 4 27 Figure 4 27 Bus coupler with 2 CT s overlapping measurement 4 28 Figure 4 28 Switching onto earthed busbar 4 28 Figure 4 29 Trip test with circuit breaker 4 29 Figure 4 30 Trip test with circuit breaker 4 30 Figure 4 31 Characteristic f...

Page 15: ... A 11 Figure A 9 3 Connection diagram bay unit A 12 Figure A 9 4 Connection diagram Master Unit A 13 Figure A 9 5 Connection diagram Master Unit Cont A 14 Table 1 1 Data for selection and ordering 1 2 Table 2 1 Overview of the device connections 2 10 Table 3 1 General device data 3 1 Table 3 2 Electrical tests 3 3 Table 3 3 Mechanical tests 3 4 Table 3 4 Climatic conditions 3 4 Table 3 5 Busbar pr...

Page 16: ...ble 7 1 ZPS SBK 7 5 Table 7 2 ZPS BSZ 7 5 Table 7 3 ZPS SK 7 5 Table 7 4 Power supply module of the master unit 7 6 Table 7 5 Status events 7 8 Table 7 6 ZPS SK 7 10 Table A 9 1 Alarms from the master unit for PC LC display and binary inputs and outputs A 4 Table A 9 2 Basic position of jumpers on ZPS module master unit A 15 Table A 9 3 Basic position of switches on ZPS module master unit A 15 Tab...

Page 17: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 18: ...0 V DC 110 125 V DC 220 250 V 3 4 5 Mechanical design in subrack ES902C in surface mounted casing in 8MF cubicle A B F Fitted for 8 bays 16 bays 24 bays 32 bays 40 bays 48 bays A B C D E F Fitted alarm modules 16 alarms 32 alarms 1 2 Communication language German English 1 2 Order no BAY UNIT 1 7SS52 7 8 9 13 1 A 0 0 A A 0 Nominal current at 50 60 Hz 1 A 5 A 1 5 Nominal auxiliary voltage for conve...

Page 19: ...Length 600 m Length 700 m Length 800 m Length 900 m 0 1 2 3 4 5 6 7 8 9 10 meter lengths Length 0 m Length 10 m Length 20 m Length 30 m Length 40 m Length 50 m Length 60 m Length 70 m Length 80 m Length 90 m A B C D E F G H J K 1 meter lengths Length 0 m Length 1 m Length 2 m Length 3 m Length 4 m Length 5 m Length 6 m Length 7 m Length 8 m Length 9 m A B C D E F G H J K e g 227 m outdoor cable wi...

Page 20: ...1 A1 Operation manual Distributed busbar and circuit breaker failure protection SIPROTEC 7SS52 E50410 A0012 U501 A1 7691 Ancillary devices The following ancillary devices are contained in the delivery of the master unit D Extraction handle for boards 1 off D FO Simplex indoor cable length 0 2 m 2 off D FO coupler 1 off D Inscription film D Torx socket wrench insert T8 T10 T20 D Disk with PC commun...

Page 21: ...r sections KS 1 The busbar configuraĆ tion can include up to 24 longitudinal sectionalizers and 4 bus couplers 1 bus coupler 2 bays D By virtue of the universal isolator replica the 7SS52 can be matched with different busbar confiĆ gurations in the design phase D Compensation of different current transformer raĆ tios is achieved by parameter setting Intermediate current transformers are thus no mo...

Page 22: ... the V 24 interface and utilizaĆ tion of the program DIGSI for system configuraĆ tion settings parameterizing and reading out of events and fault recordings D Commissioning support by means of measuring and annunciation features 2 3 Scope of functions The numerical busbar protection contains the folloĆ wing functions D Busbar protection with up to 12 bus zones 12 bus coupler sections KS and up to ...

Page 23: ... in this feeder is inverted unbalancing For this function a dedicated set of parameters is available 4 TRIP repetition with subsequent unbalancing When initiated by a TRIP command from the feeĆ der protection the 7SS52 issues a TRIP comĆ mand to the circuit breaker of the initiating feeder after a set time delay In case this second TRIP command is also unsuccessful unbalancing as per mode 3 is ini...

Page 24: ...ble or triple busbars with or without transfer bypass bus Combi bus operaĆ tion is possible Up to 4 couplers 1 coupler 2 bays can be confiĆ gured These can be bus couplers or and longitudiĆ nal sectionalizers With transfer bypass or combi bus operation up to 4 bus sections can be handled With combi bus operation the main bus can assume the funcĆ tion of a transfer bus D Integrated storage of isola...

Page 25: ...inary inputs and corresponding LEDs of the bay unit are freely marshallable Up to 2 x 16 alarm relays and LEDs in the master unit can be marshalled with various functions for user specific output and indication Several single alarms can form a group alarm Up to 7 fixed allocated binary inputs can be used to control functions of the master unit e g release fault record acknowledge LED 2 3 7 Measuri...

Page 26: ...its D data links fibre optical cables The master unit can be delivered in a SIPAC 19 subĆ rack for cubicle mounting or in a casing for surface wall mounting On account of the modular design different fitting variants can be coordinated with the station configuration The bay units are built into a 7XP20 casing for cubicle mounting or surface mounĆ ting Prefabricated glas fibre optical cables 62 5 1...

Page 27: ...position in a coordinate system The connections inĆ side a module are numbered from left to right as seen from the rear e g 1C1 and 1B4 refer to figure 2 6 FSMA screw type connections are located on the rear side for a fibre optical interface to the master unit The dimensions can be seen in figure 2 5 2 4 2 Master unit The master unit consists of several modules in double Europe format and is modu...

Page 28: ...from the bottom side of the casing The door of the casing is equipped with a large glas window The design of the wall mounted casing with the three components door swing out frame and base facilitates installation operation and service The mechanical dimensions can be seen in figure 2 9 If only fibre optic cables with anti rodent protection shall be used then the number of bay units connecĆ ted to...

Page 29: ...tage up to 50 ms which may occur due to short circuits in the DC supply system of the station are compensated by a DC storage capacitor for nominal voltages 60 V 6MA3522 0AA10 ZPS SBK 6MA3522 1CA10 ZPS BSZ1 6MA3522 1CB10 ZPS BSZ2 6MA3522 1CB10 ZPS BSZ3 6MA3532 0AA10 ZPS SK1 6MA3532 0AA10 ZPS SK2 6MA3532 0AA10 ZPS SK3 6MA3532 0AA10 ZPS SK4 6MA3532 0AA10 ZPS SK5 6MA3532 0AA10 ZPS SK6 1 2 3 4 5 6 7 8...

Page 30: ...or for FO connection glass fibre 62 5 125 m screw connection max 4 mm2 in parallel double leaf spring crimp contact for max 2 5 mm2 screw connection max 1 5 mm2 in parallel double leaf spring crimp contact for max 1 5 mm2 integrated FSMA plug connector for FO connection glass fibre 62 5 125 m screw connection max 1 5 mm2 in parallel double leaf spring crimp contact for max 1 5 mm2 integrated FSMA ...

Page 31: ...0 5 2 2 1 00 20 1 1 0 1 211 1 1 1 01 2 1 02 1 4 5 1 1 20 0 0 5 1 1 1 1 1 1 1 1 1 Figure 2 4 Mechanical dimensions 7XP2040 1 for surface mounting all dimensions in mm w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 32: ... Figure 2 5 Mechanical dimensions 7XP2040 2 for panel or cubicle flush mounting all dimensions in mm w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 33: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 34: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 35: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 36: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 37: ...nit bay unit back up time after auxiliary voltage failure DC 48 60 110 125 220 250 V DC 60 to 250 V 20 bis 15 v12 35 to 80 W 12 W 42 to 92 W 16 W w50 ms with UH w60 V Number master unit bay unit Voltage range Nominal control voltage DC Pick up threshold Drop off threshold Current consumption 7 20 DC 24 bis 250 V thresholds selectaĆ ble by plug in jumpers 24 60 110 220 V 0 8 x UN 0 65 x UN approx 1...

Page 38: ...Baud rate Interface for high speed data communication connection Baud rate fibre optical cable optical wavelength permissible cable attenuation transmission distance character quiescent status 9pol subminiatur ISO 2110 1āā200 to 38āā400 Baud 9pol subminiatur ISO 2110 1200 to 19āā200 Baud FSMA plug connector 1āā200 kBaud glass fibre 62 5 125 m 820 nm max 8 dB max 1 5 km1 light off master unit bay u...

Page 39: ...s EN 50081 2 basic technical stanĆ dard Radio disturbance voltage on lines only auxiliary volĆ tage IEC CISPR 11 EN 55011 DIN VDE 0875 part 11 Disturbance field intensity IEC CISPR 11 EN 55011 DIN VDE 0875 part 11 150 kHz to 30 MHz limit value class B 30 bis 1ā000 MHz limit value class B IEC 255 6 IEC 255 22 international product standards EN 50082 2 technical basic stanĆ dards DIN VDE 0435 part 3...

Page 40: ...3 acc to SN 29010 T 2 sinusoidal 10 to 60 Hz 0 075 mm amplitude 60 to 150 Hz 1 acceleration freĆ quency spectrum 1 oktave min 20 cycles in 3 axes rectangular to one another sinusoidal 5 to 8 Hz 7 5 mm amplitude 8 to 150 Hz 2 acceleration freĆ quency spectrum 1 oktave min 20 cycles in 3 axes rectangular to one another Table 3 4 EN 60255 6 IEC 255 6 DIN VDE 0435 Teil 303 permissible ambient temperat...

Page 41: ...The threshold of binary inputs has to be matched with the station data D Modules Plug in modules are in general interchangeable if the type designations up to the oblique stroke are identical the characters behind the oblique stroke contain internal factory data which do not normally affect the inter changeability With modules ZPS however the address settings must be checked and with modules EAZ t...

Page 42: ...ar short circuit Overcurrent I IN 2 Time delay 0 2 to 2 00 0 01 0 05 to 1 s 0 01 3 6 General data Table 3 7 General data Trip signal storage time Minimum current limit for reset of signal n 2 0 02 to 1 0 s in steps of 0 01 0 2 to 2 0 in steps of 0 1 Setting range n 0 to 25 in steps of 0 01 Setting range in s 1 to 180 in steps of 0 01 Busbar arrangement max Number of bays Quadruple or triple busbar...

Page 43: ...cy range tolerance L1 L2 L3 E in A primary and in N 0 to 1ā000 N typical 2 of measured value dL1 dL2 dL3 sL1 sL2 sL3 0 to 1ā000 N in Hz N 5 Hz 0 1 Hz Master unit Feeder currents range tolerance Differential and stabilizing currents of all bus sections separate for ZPS BSZ1 ZPS BSZ and ZPS BSZ3 range L1 L2 L3 in N 0 to 1ā000 N typical 2 of measured value dL1 dL2 dL3 sL1 sL2 sL3 in N 0 to 1ā000 N Ev...

Page 44: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 45: ...ed binary signals processes functions of the breaker failure protection and fulfills autodiagnosis tasks Heavy duty command relays take the protection syĆ stem s trip commands directly to the circuit breakers Alarm relays and indications LED LC display allow event indication In addition operational measured vaĆ lues are displayed The master unit is designed as a multi processor syĆ stem The measur...

Page 46: ...ontrol operation coupling master SK serial interface SV power supply ZPS central processor protection ZPS BSZ1 ZPS BSZ2 ZPS BSZ3 EAZ1 EAZ2 SV DPR DPR DPR ZPS SBK ZPS SK1 ZPS SK2 ZPS SK3 DPR DPR DPR DPR DPR DPR ZPS SK4 ZPS SK5 ZPS SK6 bay unit A D C bay unit A D C bay unit A D C bay 1 bay 2 bay 48 20 binary inputs marshallable 7 binary outputs 5 command relays 1 alarm relay marshalable and 1 alarm ...

Page 47: ...r understanding of these presentaĆ tions figure 4 2 shows a legend of the used symĆ bols P t1 1 function number example input or output function 1 parameter setting by parameterizing input selection facility switch can be influenced e g by setting of a parameter logical OR connection logical AND connection with blokĆ king function e g current limit value monitor binary input Tpu t2 b a b a t1 t2 a...

Page 48: ...m of all currents can be formed at any time and if formed as such using instantaneous current values full use of above law can be made The current sum used for evaluation is available at any instant without interruption and stays at zero unless there is another path due to a fault whose current is not measured The above considerations apply strictly to the primary conditions in a high voltage swit...

Page 49: ...em tend to grow longer A superimposed DC component speeds up the magnetĆ ic saturation in the transformer cores thus considerĆ ably affecting the transformation task Several measures some of which are already known from the conventional protection have been introduced into the measuring system of the busbar protection 7SS52 to cope with these problems They supplement the basic principle of monitor...

Page 50: ...izing quantity āāmod is derived from āā and is illustrated in Fig 4 4 Fig 4 5 illustrates the characteristic of a stabilized reĆ strained differential protection system In the diaĆ gram the abscissa represents the sum of the magnitudes of all quantities flowing through the busĆ bar while the vectorial sum is plotted as the ordiĆ nate Both axes use rated current as the unit and both have the same s...

Page 51: ... peak value of the short circuit AC current and decays at the rate of 60 ms The current flows through the current transformer which under the conditions asĆ sumed to be present would just be able to carry the AC current without saturation if the AC current and thus the magnetic flux in the iron core were not offĆ set However on account of the superimposed DC component and the unfavourable magnetic...

Page 52: ... Figure 4 6 CT currents and measured values in the event of an initially fully offset fault current DC component decaying with 60 ms w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 53: ... the digital busbar protection 7SS52 even under extremely difficult conditions namely 1 high degree of stability even during current transĆ former saturation 2 short tripping times for internal short circuits 3 correct behaviour and proper response to evolving faults 4 ease of commissioning and determination of setĆ ting values At first glance the stability in the event of external short circuits ...

Page 54: ...criterion of the characteristic Fig 4 5 is checked If the criterion is met the protection trips after one measurement 1 out of 1 Otherwise two measurements 2 out of 2 are performed and required for a trip 4 3 1 4 Response threshold pick up The working conditions for the busbar protection may differ widely from one station to another Great differĆ ences exist regarding the design and the switching ...

Page 55: ...up 150 ms blocking time Figure 4 7 Logic for TRIP according to 1 out of 1 evaluation Diff current supervision picked up D k x S Iāā I 0 characteriĆ stic Measured value supervision picked up t1 7 ms TRIP after two measurements 1 1 time window 2 t1 7 ms time window 1 Figure 4 8 Logic diagram for TRIP according to 2 out of 2 evaluation w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 56: ... manner only half of the total through flowing load current acts as stabilizing current The short circuit current does not stabilize the check zone and only acts as differential current This procedure is illustrated in Fig 4 9 I1 I2 I3 I3 I4 I4 BB1 BB2 DI I I1 I2 I3 I4 I3 I4 I I I1 I2 I Normal stabilizing current without special treatment IStab I I1 I I I2 I I I3 I I I4 I I I3 I4 I Load currents I...

Page 57: ...ase the busbar section with the lowest number is considered to be preferred At the same time the coupler bay is taken out of the allocation list with respect to the currents 4 5 2 Processing of the isolator running status If an isolator changes position for instance from the OPEN position then a certain time isolator running time is required before the other position in this inĆ stance the CLOSED ...

Page 58: ...e 7SS52 as isolator mal function status ISOx flt run Byy FNo e g for isolator 4 During transfer operation the feeder connected to the bypass busbar is replaced in the allocation list by the bus coupler Monitoring of the isolator states in the feeder and coupling bays ensures that the feeder is substituted in the allocation list by the coupler only after the bus or feeder isolator had been opened U...

Page 59: ...er Bus coupl b Feeder simultaneously on bypass transfer bus and main bus BBA BBB BPB Busbar allocation CT location BBA BBB Check zone BPB external internal Bus coupler Bus coupler Feeder Feeder Bus coupl c Final condition bypass transfer operation Feeder BBA no protection Feeder Bus coupl Bus coupler Feeder Feeder Bus coupler Bus coupler Bus coupler Bus coupler no protection The current being fed ...

Page 60: ...imultaneously on bypass transfer bus and main bus BBA BBB BPB Busbar allocation CT location BBA BBB Check zone BPB external internal Bus coupler Bus coupler Feeder Feeder Bus coupl c Final condition bypass transfer operation Feeder Bus coupl BBA no protection Feeder Bus coupl Bus coupler Feeder Bus coupl Feeder Bus coupl no protection The current being fed by the feeder or into the feeĆ der cannot...

Page 61: ... bus operation it is sufficient that after closing of Q7 either the bus isolator Q1 or the feeder isolator Q9 is opened figure 4 11 BB1 BPB Q1 Q9 Q7 Figure 4 11 Transfer bypass bus operation with closed busbar isolaĆ tor With parallel feeders a differential current may occur if one feeder was earthed and an earth fault occurs on the parallel feeder figure 4 12 The protection sees a current in the ...

Page 62: ... The following reaction by the protection system 7SS52 depends on the operation mode CBF OP Axx DA 6601 to 6648 ZE selected for each feeder Following variants of CBF operation are utilised 1 Current sensor 2 Trip repetition with current sensor 3 Unbalancing 1 stage CBF 4 Trip repetition with following unbalancing 2 stage CBF 5 Trip repetition with following unbalancing for pulse trigger 6 TRIP fro...

Page 63: ... OP P DA 6207 ZE P T TRIP REP DA 6208 ZE P T CBF DA 6204 ZE P CBF Ayy DA 67yy ZE zone selective t1 P CBF Ayy DA 67yy ZE Lx Ly v Lx E P CBF Ayy DA 67yy ZE Lx E three phase TRIP repetition phase selective TRIP repetition feeder selective feeder selective P 1 2 channel DA 6201 ZE 1 three phase TRIP command transfer trip command feeder selective 1 BI suĆ pervision figure 4 32 chapter 4 7 8 5 t1 Lx Ly ...

Page 64: ...r is exceeded during the total time period T CBF If the current falls below the threshold then the runĆ ning time T CBF is interrupted This operation mode yields three essential advantaĆ ges D Full protection stability similar to the busbar proĆ tection measurement is maintained D No special demands are made on the reset time of the feeder protection i e even with a longer reset time there is no d...

Page 65: ...tiating bay unit The principle of unbalancing is depicted in figure 4 16 Unbalancing causes a differential current of twice the magnitude of the current in the CBF initiaĆ ting feeder This operation mode also uses the unbalancing described in chapter 4 6 1 3 Before all feeders of the bus zone with the CBF initiating bay unit are tripped three phase the TRIP command is repeated This operation mode ...

Page 66: ... is usually fault detection by the feeder protection Simultaneously the time delay for TRIP repetition T TRIP REP and the time delay for unbaĆ lancing T CBF are started The TRIP repetition time must be shorter than the CBF time delay TRIP repetition is issued only when the feeder selecĆ tive CBF initiation together with the common CBF release persist after the time delay T TRIP REP has elapsed TRI...

Page 67: ... The minimum signal duration of the binary input at the bay unit has to be w20 ms After receiving the initiation signal the function TRIP repetition is processed After the time T PULSE DA 6205 ZE has elapĆ sed a TRIP command is issued to the opposite feeĆ der terminal If the TRIP command does not result in reset of the protection then unbalancing is started after the time T CBF DA 6204 ZE has elap...

Page 68: ...l must be transmitted to the remote end circuit breaker If signal transmission is not availĆ able then the distance protection at the remote end must clear the short circuit current via its second zone time usually 0 5 s If signal transmission is used then the current can be interrupted faster i e after the breaker failure time T BF DA 6204 ZE In the 7SS52 the duration of the currents is moniĆ tor...

Page 69: ... feeders of this zone and to both coupling bay units Thus bus zone BBA is isolated and the healthy bus zone BBB stays in service In the event of a failure of the bus coupler circuit breaker the busbar protection has to disconnect bus zone BBB too If the current persists in the coupler bay units after the time T CBF DA 6204 ZE has elapsed then breaker failure is assumed This results in unbalancing ...

Page 70: ...TRIP command due to a busbar fault BB TRIP and a TRIP command due to breaker failure BF TRIP In the event of a busbar TRIP the breaker failure proĆ tection time delay CBF time delay is startet If TRIP release is not given within the CBF time delay via BI of the bay unit then no TRIP command is generated and the status missing TRIP release is indicated feeder selective The missing TRIP release does...

Page 71: ...w towards the busbar Bus zone BBB remains in operation what means that the fault continues to be fed In order to interrupt the short circuit current the second bus zone must be isolated too BBA BBB 2 1 CPBBA CPBBB Figure 4 25 Short circuit in the dead zone For this purpose the bay unit monitors the current in the bus coupler after BBA has been tripped If the current in the bus coupler persists aft...

Page 72: ...o a short circuit on bus zone BBB beĆ cause the protection criterion is faster than the circuit breaker status processing To avoid this a leading contact for closing the circuit breaker integrates the current of the coupler current transformer into the protection algorithm The designer has to select a suitable leading conĆ tact Depending on the application the leading recognition of the close comm...

Page 73: ...n into the alarm buffer of the ZE as an event coming going FNr 87 ZE 4 7 5 Control functions 4 7 5 1 Trip test with circuit breaker The 7SS52 offers an easy method of testing the trip circuits and the circuit breaker The test can be started from the master unit and from each bay unit by control operation figure 4 29 An additional binary input function CB test FNr 1156 FE is provided in the bay uni...

Page 74: ...ary voltage of the bay unit or for the binary inputs is interrupted or the FO connection to the master units is interrupted then the related bay unit has to be taken out of service by the parameter service DA 64xx ZE All configured isolators of the bay are assumed to have OPEN status In case of the bus coupler this status is automatically assuĆ med for both coupler bay units The check zone conside...

Page 75: ...addition to the LEDs for alarm indication each type of device contains an indication ready for operation green and a failure indication red 4 7 6 2 Operation and indication Operational measured values operational events and fault events can be read out via integrated operation keys and a LC display The keypad can also be used for setting protection parameters configuring the proĆ tected object and...

Page 76: ...tioning as well as low demand on mainĆ tenance The complete protection system is cyclicly monitored from the measuring inputs through the data commuĆ nication between master unit and bay units up to the command relay coils Monitoring circuits and processors monitor the hardĆ ware for faults and impermissible conditions Details are as follows D Auxiliary and reference voltages The processor of the ...

Page 77: ...re compared with the data on the master module D Output trip channels FE The output trip channels are controlled via two comĆ mand channels and one release channel Checking of the signal output channels is performed in connection with the cyclic protection test refer 4 7 8 8 Watchdog timers are provided on the processor modĆ ules to continuously monitor the program sequences In the event of proces...

Page 78: ...3 DIFF SUP BZ DA 6307 ZE D Only alarm When the differential current exceeds or falls beĆ low the limit then a general coming going alarm disturbance without protection blocking is geneĆ rated FNo 1 ZE a collective alarm for ZPS BSZ2 BSZ3 FNo 92 ZE and a specific alarm Diff super BZz Lx from BSZy FNo 96 107 112 123 128 139 ZE for BSZ2 and FNo 144 155 160 171 176 187 ZE for BSZ3 or Diff current sup ...

Page 79: ...ed in Section 4 5 4 7 8 5 Supervision of CB failure protection initiation and release If a binary input start CBF FNr 7020 to 7022 FE is energized incorrectly there is a risk of spurious tripĆ ping of a busbar in this feeder on acount of the inverĆ ted current Following monitoring functions can be performed set by parameters CBF BI MODE DA 6201 ZE D If the selective CBF initiation persists longer ...

Page 80: ...IP command it must be ensured that the controlled circuit breaker has really opened and that the tripping current circuit of the bay unit has been interrupted by the circuit breaker auxiliary conĆ tact Interruption of the tripping current by the command relay causes overload for the contacts and their desĆ truction For realisation of the current controlled command reset the time steps T TRIP DUR D...

Page 81: ...d values up to the command relays This test is treated like a real fault and uses the same transmission links for measured values and trip commands Thus it yields utmost seĆ curity and reliability This test does not influence the protection function The test is performed only if no real fault is detected on the busbar or the connected feeders In the event of an internal failure detection the ident...

Page 82: ...ating position Isolator CLOSED OPEN 0 0 for t Isol Op Time DA 6301 ZE D Aux Voltage failure All isolator positions of one bay 0 0 D Implausible isolator status Isolator CLOSED OPEN 1 1 wire breakage or faulty status annunciation1 ISOyFltrun Axx FNo 67 ZE for ISOL 1 Feeder aux voltage miniature circuit breaker tripped annunciation1 U aux flt Axx FNo 86 ZE annunciation1 ISOyFlt Axx FNo 66 ZE for ISO...

Page 83: ...ents of IEC 255 21 are fulfilled Unpacking and repacking must be performed with the usual care without force and only with the aid of suitĆ able tools The units must be visually checked to ensure that they have not been mechanically damaged 5 2 Preparations The operating conditions must be in accordance with VDE 0100 5 73 and VDE0105 part 1 7 83 The modules of digital protection equipment contain ...

Page 84: ...upler bay units Recognition of the isolator status is carried out sepaĆ rately via the binary inputs of each bay unit For the mostly used version of a bus coupler with only one circuit breaker the trip command and transĆ fer trip contacts of both bay units must be connected in parallel In this case the connection of further binary input functions e g CBF initiation CBF release TRIP reĆ lease CB fa...

Page 85: ...table for mounting in panels and cubicles D It is fixed from the front side by at least four screws Make sure that the fixing flanges at both sides fully contact the surface dimension draĆ wings are shown in chapter 2 6 2 D Connect earthing terminal on the casing s outside refer to Fig 2 7 with the protection earth of the panel or cubicle D A solid low ohmic and low inductive operating earth via t...

Page 86: ... and 5 2 Only one jumper may be fitted per binary input Table 5 1 Control voltage for the binary inputs on the EFE bay unit in relation to the fitted jumper Nominal switching threshold Name 24 V 60 V 110 V 220 V BI 1 X37 X36 X35 BI 2 X40 X39 X38 BI 3 X43 X42 X41 BI 4 X46 X45 X44 BI 5 X49 X48 X47 BI 6 X52 X51 X50 BI 7 X55 X54 X53 BI 8 X58 X57 X56 BI 9 X61 X60 X59 BI 10 X64 X63 X62 BI 11 X67 X66 X65...

Page 87: ...o Fig 5 3 and withdraw the module 8A 7A 6A 5A 4A 3A 2A 1A X35 X95 X36 X37 X38 X39 X40 X96 X41 X42 X43 X44 X45 X46 X47 X48 X49 X50 X51 X52 X53 X54 X55 X56 X57 X58 X59 X60 X61 X62 X63 X64 X65 X66 X67 X68 X69 X70 X71 X72 X73 X74 X75 X76 X77 X78 X79 X80 X81 X82 X83 X84 X85 X86 X87 X88 X89 X90 X91 X92 X93 X94 X1 X2 Unit bus plug connector Voltage plug connectors for external connection EFE Id Nr 708733...

Page 88: ...own the locking bolt of the module at the bottom guide rail X1 EAZ Id Nr 708 70 903 X2 X10 6 5 2 1 X38 6 5 2 1 X9 3 1 X39 3 1 X40 3 1 X11 X21 X31 X12 X22 X32 X13 X23 X33 X14 X24 X34 X15 X25 X35 X16 X26 X36 X17 X27 X37 X41 24 1 X1 Plug connector for LED control S1 OPEN 1 3 4 2 1 1 1 This module can be operated without battery Figure 5 4 Location of the jumpers on the module EAZ1 master unit The swi...

Page 89: ...y means of switches The codes are listed in table A 9 3 refer to annex The location of the switches is depicted in Fig 5 5 X27 X24 X22 X20 D1 D27 D86 D42 D19 X23 X1 X2 X21 X29 X30 X31 X11 X25 X26 X33 X34 X32 S4 S3 S2 S5 S1 H1 H2 H3 H4 It is recommended to verify the switch positions and jumpers before fitting the module All settings are listed in tables A 9 2 and A 9 3 in the annex The locaĆ tions...

Page 90: ...nsformers correctly earthed Are the polarities of the current transformers conĆ nections consistent Is the phase relationship of the current transĆ former consistent D Fibre optical connections between master unit and bay units It must be ensured that each ZPS SK module in the subrack is connected to an LMZ module D Check the tripping circuits through to the circuit breakers no primary switching a...

Page 91: ...B2 BZ3 BB3 BZ5 Q9 Q2 Q3 Q7 1T Q10 Q20 Q30 Q1 Q2 Q3 1T Q1 Q2 Q3 Q7 1T Q9 Q1 Q2 Q3 Q7 1T Q11 Q31 7 Q10 Q20 Q30 BZ8 Q10 Q20 Q30 BZ2 BZ4 BZ6 1T Q1 Q71 Q21 1 2 3 4 8 5 6 9 Bay number BB4 BZ7 2 1 Configuration DA 5404 BB ISOLAT4 TB Isolator DA 4900 BB configuration DA 4901 BB01 BZ01 DA 4902 BB01 BZ02 DA 4903 BB02 BZ03 DA 4904 BB02 BZ04 DA 4905 BB03 BZ05 DA 4906 BB03 BZ06 DA 4907 BB04 BZ07 DA 4908 BB04 B...

Page 92: ...er 1 1 BZ1 non existent non existent non existent non existent BB side 04 Coupler 1 2 non existent BZ4 non existent non existent non existent no CT 05 Coupler 5 1 BZ2 non existent non existent non existent non existent BB side 06 Coupler 5 2 non existent BZ5 non existent non existent non existent no CT 07 Coupler 8 1 AB1 non existent non existent non existent non existent BB side 08 Coupler 8 2 no...

Page 93: ...mers The CT polarity defiĆ nes the direction of the current flow for evaluation in the protection program In Fig 5 7 the setting line side has to be selected for all feeder bays The current transformer of the 1st bus coupler measures the current for bay 1 As a conĆ sequence an identical CT polarity is selected in relaĆ tion to the feeder bays The virtual current transforĆ mer for bay number 2 is s...

Page 94: ... alarms and indications is performed by means of the communcation programm DIGSI or the integrated keypad The preset configuration of the alarm relays and LEDs is described in chapter 6 Table 5 3 Binary inputs and outputs Inputs and outputs Bay unit Master unit Alarm relay D marshallable D fixed 1 1 16 32 1 2 Command relay D marshallable 5 Binary inputs D marshallable D fixed 20 7 LED indications ...

Page 95: ...ion is switched on by operaĆ ting any key It is switched off automatically when operation is interrupted for 10 minutes The keypad comprises 24 keys with the following meanings Numerical keys for the input of numbers 0 9 to Digits 0 to 9 for numerical inputs Decimal point Change sign key input of negative numĆ bers Function keys for text parameters Password the master unit verifies the authorizati...

Page 96: ...ign parameters for station configuraĆ tion The codeword password is not required for the read out of event list operational data fault data and setĆ ting values address blocks 61 to 67 To indicate authorized operator use press key F1 enter the three digit codeword see below and conĆ firm with the ENTER key Codeword password entry can also be made retrospectively when an atĆ tempt to alter a parame...

Page 97: ...the new parameter however ocĆ curs only after completion of the parameter setting process refer below D Addresses which require text input The display shows the four digit address i e block and running number e g 5102 for block 51 running number 2 The meaning of the paramĆ eter is displayed behind the bar The second line shows the text of this parameter When the relay is delivered a text has been ...

Page 98: ... The unit introduces itself with its type number and the version of firmware with which it is equipped From DA 0100 ZE onwards the design data begin Beginning of the design data block Y B 0 1 0 0 D E S I G N D A T A C o n f i g B a y 0 1 Beginning of the design data block 6 2 3 Station lay out data Design data is mainly plant specific data which reĆ quires no change during normal service This grou...

Page 99: ... Y Y 0 Bay position number Bay YY in which the feeder is located smallest value 0 0 smallest value 0 0 highest value 99 9 highest value 99 9 Bay setting A X X 0 3 B A Y S T A B X X e x i s t e n t Bay setting existent non existent non existent The system software is designed such that if one feeder is parameterized as non existent all further feeders are ignored i e the other feeders are reĆ garde...

Page 100: ... maximum setting This parameter is used to match the different CT raĆ tios The basis for the setting is the CT with the highest transformation ratio This CT is given the setting value 1 The ratios of the CTs of the other feeders are matched to this CT and set accordingly Example Feeder no CT ratio Normalizing facĆ tor xx06 1 2 3 4 5 6 500 1 300 1 500 1 600 1 400 1 1000 1 0 500 0 300 0 500 0 600 0 ...

Page 101: ...us is allocated to digital inputs of the bay unit FE or assumed to be CLOSED CLOSED simulation The configuration for CLOSED is done by adding a leading 1 before the first bus zone with the input e g 102 at BZ02 CLOSED 115 at CS03 CLOĆ SED 103 07 at BZ03 BZ07 CLOSED identical to ISO1 A X X 0 8 B B I S O 2 B X X n o n e x i s t e n t identical to ISO1 identical to ISO1 A X X 0 9 B B I S O 3 B X X n ...

Page 102: ...o section 4 5 5 blocked A 5 4 0 2 B A Y D C F A I L O L D i s o l s t a t u s Treatment of isolator status in the event of auxiliary voltage failure for isolator status OLD isol status Isol CLOSED A 5 4 0 3 I S O L S T 1 1 O L D i s o l s t a t u s Treatment of isolator status for Signals for isolator status CLOSED OPEN on simultaneously OLD isol status Isol CLOSED A 5 4 0 4 B B I S O L A T 4 B B ...

Page 103: ...urth main bus from 1 to 12 In the same way the coupler sections are counted from 13 to 24 For each main bus the number of corresponding bus sections and coupler sections is defined Y B 4 9 0 0 C O N F I G U R A T B B C o n f i g u r a t A 4 9 0 1 B B B Z o r A u x Z B Z 0 1 B Z 0 1 A 4 9 0 2 B B B Z o r A u x Z n o n e x i s t e n t to A 4 9 2 4 B B B Z o r A u x Z n o n e x i s t e n t Parameters...

Page 104: ...ED and red for OPEN Attention Modification of the ex works settings only for test purpose A 5 1 0 3 F A U L T R E S P O r e l e a s e d Unit response to system fault infinite loop operation released unit blocked and in monitor state blocked unit operating despite system fault only permissible for testing and fault finding A 5 1 0 4 A U T L E D A C K b l o c k e d Automatic acknowledgement of LED i...

Page 105: ...t i c Refreshing the fault buffer automatic Always the last fault record is stored and available for read out A previously stored fault record is overwritĆ ten manual After storing two fault records the fault recording function remains blocked until released by operation or binary input fltrec rele If released both buffers are erased irrespective of their contents A 6 3 1 7 R E L E B O S B U r e l...

Page 106: ... for the pick up characteristic consist of 1 differential current limit Diff and 2 stabilizing factor STAB FAC These values can be set individually for the bus secĆ tion specific protection and the check zone Y B 6 0 0 0 C H A N G E S E T T I N G S Y B 6 1 0 0 S E T T I N G S B B D i f f P r o t e c A 6 1 0 1 S T A B F A C B Z 0 6 5 Stabilizing factor for the bus section specific protecĆ tion comm...

Page 107: ...IP command The TRIP commands of all bays are extended to the set time as a minimum The TRIP command is reset only after the set time has elapsed and the current sensor of the bay has dropped off minimum setting s maximum setting s A 6 1 0 7 B I T R I P E N A B n o n e x i s t e n t Binary input feeder selective TRIP release for busĆ bar short circuit refer to chapter 4 7 1 1 non existent existent ...

Page 108: ...A 6 3 0 4 T D I F F s U P V 2 s Time delay for blocking of protection or alarm minimum setting 1 s maximum setting 10 s A 6 3 0 5 I S U P E R V B Z 0 1 0 I I n o Differential current limit for the bus section specific protection minimum setting 0 05 no maximum setting 0 80 no A 6 3 0 6 I S U P E R V C Z 0 1 0 I I n o Differential current limit for the check zone minimum setting 0 05 no maximum set...

Page 109: ... I B F O p M o d e 0 1 4 8 Parameter block for feeder selective setting of the circuit breaker failure operation mode A 6 6 X X B F O P M D B X X B Z u n b a l a n c e Setting address of the CBF operation mode for feeder XX 1 to 48 non existent TRIP fr ext CBF TRIP from external circuit breaker failure protection unbalance TRIP rep unb TRIP repetition with following unbaĆ lancing sensor TRIP rep s...

Page 110: ...on A 6 2 0 4 T I M E U N B B F 2 5 s Time delay for circuit breaker failure processing minimum setting 0 05 s maximum setting 1 00 s A 6 2 0 5 T B F I M P U L S 5 0 s Time delay for the three phase TRIP repeat command after external breaker failure initiation mode of operaĆ tion TRIP UNB pulse minimum setting 0 05 s maximum setting 1 00 s A 6 2 0 6 T C B F A U L T 1 0 s Time delay after external i...

Page 111: ...rvision of the breaker failure protection reĆ lease refer to chapter 4 7 8 5 2 Isolator supervision see chapter 4 7 8 4 3 Supervision function for the linearized current transformers refer to chapter 4 7 8 7 4 Supervision function from the internal cyclic tests see chapter 4 7 8 8 Y B 6 3 0 0 S E T T I N G S S u p e r v i s i o n 6 2 4 3 1 Settings for breaker failure protection supervision A 6 3 ...

Page 112: ... signalled and the protection is blocked Blocking is cancelled only when the failure does not exist any longer and the blocking is acknowledged via operaĆ tion DA 8600 ZE or via binary input BloISOFlĆ tRel BE5 ZE 6 2 4 3 3 Settings for linearized current transformĆ ers A 6 3 0 9 Z E R O C R S U P a c t i v e Zero crossing supervision inactive active After an external fault has been switched off by...

Page 113: ...oses A 6 3 1 2 T E S T F A U L T a l a r m o n l y Response for pick up of the cyclic tests alarm only block prot After failure clearance the protection blocking can be released via or the protection system is reactivated by restart A 6 3 1 3 I M A N T R I P 0 5 I I N Current threshold for performing the circuit breaker test refer to chapter 4 7 5 1 minimum setting N maximum setting N Y B 6 5 0 0 ...

Page 114: ...ease blocking after pick up of differential current supervision 5 BloISO Flt rel Release blocking after isolator failure 6 Eventbuf erase Erase contents of the operations and fault record buffer 7 free R e l e a s e f l t r e c The binary input erases stored fault records New fault records can now be stored F l t r e c f r e e z e The binary input generates a fault record Pre fault and post fault ...

Page 115: ...ts is done with a dialog Y B 8 1 0 0 T E S T A u t o t e s t i n g For protection testing a test routine is started which covers the complete protection system from measuĆ red value acquisition up to the trip circuits This test is useful only when the cyclic protection test is switched off Start the test by depressing the YES key F3 P L E A S E W A I T A U T O T E S T I N G e x e c u t e d a l l o...

Page 116: ...uded with the ENTER key A three phase test is performed if only the bay numĆ ber is indicated b a y i n s e r v i c e Prior to performing a CB test the corresponding bay must be taken out of service e g via M A N T R I P B A Y P H 0 4 L 2 The inscription appears after entering the bay number and phase number as well as bay out of service F3 Interrupt with NO key F4 M A N U A L T R I P e x e c u t ...

Page 117: ...of the difĆ ferential current supervision has to be answered by key F3 and the command is executed R E L S B L O D I F S U P e x e c u t e d Confirmation Y B 8 6 0 0 C O N T R O L R e l e a s B l o I s o M a l Release blocking by pick up of the isolator failure suĆ pervision running time status auxiliary supply failure and by test failure refer to chapter 4 7 8 4 This conĆ trol is reasonable only ...

Page 118: ...larms can be marshalled to one digital output group alarm The communication software DIGSI supports marshalling This requires assignment of the function no acc to appendix A 1 2 which corĆ responds to the alarm For creating group alarms the function numbers are listed consecutively The most common collective alarms are already avaiĆ lable in the system with defined F No Further collective alarms a...

Page 119: ...e function number for the alarm relay and corresponding LED 2 Change relay allocation separate allocation of functions possible 3 Change LED allocation separate allocation of functions possible 4 Indicate correlation event number E No alarm List of all alarms indication of the corresponding function numbers and supplementary information about actual marshalling 5 Indicate correlation relay alarm o...

Page 120: ... failure transfer trip 029 transf Trp BXY 16 TRIP busbar high speed TRIP 3 030 TRPBZ01 L1 zzz TRPBZ12 L1 zzz TRPBZ01 L2 zzz TRPBZ12 L2 zzz TRPBZ01 L3 zzz TRPBZ12 L3 zzz zzz Fault no 17 Busbar protection TRIP command BZ1 016 032 048 TRPBZ01 L1 2 3 zzz 18 Busbar protection TRIP command BZ2 017 033 049 TRPBZ02 L1 2 3 zzz 19 Busbar protection TRIP command BZ3 018 034 050 TRPBZ03 L1 2 3 zzz 20 Busbar p...

Page 121: ...figuraĆ tion of the bays to the bus sections accorĆ ding to the actual isolator replica recogniĆ zed by the bay units The isolator replica is cyclicly refreshed Processor modules ZPS BSZ 2 and 3 are responsible for the zone selective busbar protection based on this configuration DiĆ sturbances and failures in the isolator staĆ tes are detected independently and stored Block 74 Measured values from...

Page 122: ...each change of isolator status one event is generated i e either the new isolator status or a faulty status 2 Isolator status events are only registered as Coming and D Supervisory events Operational events are events which are generĆ ated by the continuous self monitoring process or which indicate conditions which are not directly connected with protection fault processing Supervisory events are ...

Page 123: ...OS req man Trp Time C G ZPS BSZ no phase Time C G ZPS BSZ no phase Time C G ZPS BSZ no phase Time C G ZPS BSZ no phase Time C G phase Time C Time C Time C Time C Time C G Time C G Time C G bay no phase Time C G Time C Time C G Time C G Time C G bay no phase Time C G bay no phase Time C G bay no phase Time C G bay no Time C G bay no Time C G bay no Time C G bay no Time C G bay no Time C G bay no Ti...

Page 124: ...tion depends on setting of the parameter DA 6312 ZE 6 2 8 Measured values for commissioning blocks 74 75 76 78 During commissioning the correct polarity of the curĆ rent transformers must be checked For this meaĆ surement the bus section specific differential and stabilizing currents are required Blocks 7400 ZE 7500 ZE and 7600 ZE allow display of the currents The differential currents are display...

Page 125: ...the bus zone selective calculaĆ tion ZPS BSZ3 A 7 6 Y Y I d B Z X X L z 3 0 I I n o Differential current equivalent to d A 7 6 Y Y I s B Z X X L z 3 0 I I n o Stabilizing current equivalent to s In addition to the display of the differential and stabiliĆ zing currents the currents of all bays can be disĆ played as percentage values Y B 7 8 0 0 A N N U N C B a y c u r r e n t s Start of the address...

Page 126: ... 7 Trip command BZ section 8 Trip command BZ section 9 Trip command BZ section 10 Trip command BZ section 11 Trip command BZ section 12 Breaker failure transfer trip TRIP repeat TRP BZ01 zzz TRP BZ02 zzz TRP BZ03 zzz TRP BZ04 zzz TRP BZ05 zzz TRP BZ06 zzz TRP BZ07 zzz TRP BZ08 zzz TRP BZ09 zzz TRP BZ10 zzz TRP BZ11 zzz TRP BZ12 zzz transf Trp BXY Trip Rep BXY Time C Phase fault no Time C Phase fau...

Page 127: ...owing meanings Keys for scrolling in the display Forward scrolling the next operating position is shown in the display Reverse scrolling the previous operating position is shown in the display Forward scrolling block wise the beginĆ ning of the next operating block is shown in the display Reverse scrolling block wise the beginĆ ning of the previous operating block is shown in the display Control k...

Page 128: ...R O N G If the code was wrong then CODEWORD WRONG is displayed The password may be entered again after twice depressing the key ENTER If the password was accepted then the parameteriĆ zing may start In the following each operating adĆ dress will be shown in a box and will be explained The communication language can be selected via diĆ rect address DA 7101 FE Optionally German or EnĆ glish may be c...

Page 129: ...ion Address range 7000 7899 Confirm question 3rd level Change mode Change mode Text parameter Decimal parameter 1 Only possible if a valid password was entered If no password has yet been entered then the request to enter the password is disĆ played 2 Leaving the related password area terminates the procedure of paraĆ meter changing or change of marshallings 1 1 2 Change mode Text parameter Decima...

Page 130: ...ter 6 4 4 can be selected in the change mode by reĆ peated depressing of the horizontal arrow keys A and confirmed by depressing the key ENTER L1 L2 L3 E DL1 DL2 DL3 SL1 SL2 SL3 A 7 1 2 1 J O P E R 1 s t L S E C O N D A R Y The parameter defines the selected operational meaĆ sured value for the display The differential and stabiliĆ zing currents are displayed only as percentage seĆ condary values ...

Page 131: ...inated with the key ENTER When marshalling functions to binary inputs an addiĆ tional selection is carried out during scrolling whether the input functions in a working current or quieĆ scent current mode When marshalling the LEDs the options memorized or not memorized can additionally be selected The third level is left with the key ESC or one of the vertical arrow keys Repeated operation of the ...

Page 132: ...N P U T S Start of the block marshalling of binary inputs A 6 1 0 1 J B I N A R Y I N P U T 1 Depressing key ENTER displays the marshalled function Repeated depressing of the ENTER key starts the change mode A 1 J I N P U T 1 I s o l a t o r 1 o n N O Binary input 1 is pre set for isolator status ON for isolator 1 refer to table 6 8 Working current A is selected A 2 J I N P U T 1 n o t a l l o c a...

Page 133: ...04 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 MARSHALLING BINARY INPUT 1 BINARY INPUT 2 BINARY INPUT 3 BINARY INPUT 4 BINARY INPUT 5 BINARY INPUT 6 BINARY INPUT 7 BINARY INPUT 8 BINARY INPUT 9 BINARY INPUT 10 BINARY INPUT 11 BINARY INPUT 12 BINARY INPUT 13 BINARY INPUT 14 BINARY INPUT 15 BINARY INPUT 16 BINARY INPUT 17 BINARY INPUT 18 BINARY INPUT 19 BINARY INP...

Page 134: ... TRANSTRIP Bay out serv No function allocated to output reset LED indications Measured value supervision Data communication to master unit disturbed Close command to bus coupler circuit breaker start three pole circuit breaker test Isolator status signal Closed for isolator 1 Isolator status signal Open for isolator 1 Isolator status signal Closed for isolator 2 Isolator status signal Open for iso...

Page 135: ...o the alarm relay functions The pre set LED allocations upon delivery can be seen in table 6 9 Y B 6 3 0 0 J M A R S H A L L I N G L E D I N D I C A T O R S Start of the block marshalling of LED A 6 3 0 1 J L E D 1 Marshalling for LED 1 Depressing key ENTER starts the change mode Password is required A 1 J L E D 1 I s o l a t o r 1 o n n m A 2 J L E D 1 n o t a l l o c a t e d Only 1 alarm functio...

Page 136: ...2 3 1 2 3 1 23 342 2 0 1 2 3 1 2 3 1 23 342 2 2 1 2 3 1 2 3 1 23 342 2 0 1 2 3 1 2 3 1 23 342 2 2 1 2 3 1 2 3 1 23 342 2 0 1 2 3 1 4 3 2 3 3 43043 4 3 2 3 3 43043 3 4 3 3 23 1 4 3 2341 42 1 01 3 3 31 0 1 1 41 01 3 3 31 0 1 1 41 01 3 3 31 0 1 1 41 01 3 3 31 0 1 1 41 01 3 3 31 0 1 4 3 1 1 3 23 0 2 1 4 3 1 1 3 23 0 2 1 4 3 1 1 3 23 0 2 42 1 01 3 3 31 2 1 31 0 6 43 2 15 3 1 7 1 7 w w w E l e c t r i c...

Page 137: ... A 6 4 0 1 J T R I P R E L A Y 1 Marshalling for command relay 1 Depressing the ENTER key opens the change mode Password is required A 1 J T R I P R E L 1 C B F T r i p L 1 4 functions are pre selected for command relay 1 D FNo 7051 FE Trip command by circuit breaker failure protection for phase L1 A 2 J T R I P R E L 1 B B T r i p L 1 2 3 D FNo 7040 FE Trip command by busbar protection three phas...

Page 138: ...protection trip command L3 Busbar protection trip command L123 Breaker failure protection trip command L123 Circuit breaker test phase L3 Busbar protection trip command L123 Breaker failure protection trip command L123 Breaker failure protection trip command L1 Breaker failure protection trip command L2 Breaker failure protection trip command L3 Circuit breaker test phase L1 Circuit breaker test p...

Page 139: ...ated by deĆ pressing key ENTER A 4 4 0 1 J C B T R I P C B P O L E L 1 Circuit breaker test D phase L1 A 4 4 0 2 J C B T R I P C B P O L E L 2 Circuit breaker test D phase L2 A 4 4 0 3 J C B T R I P C B P O L E L 3 Circuit breaker test D phase L3 A 4 4 0 4 J C B T R I P C B T H R E E P O L E Circuit breaker test D three phase The test is initiated by confirmation of the question with key ENTER The...

Page 140: ...ues can be displayed simultaneously one value per display line These operational measured values are displayed by depressing the LED pushbuton Exit from this mode by any other key The measured values which shall be displayed in the 4 line mode are selected in parameter block DA 7100 FE refer to chapter 6 4 1 The displayed measured values are refreshed at a rate of 0 5 s Current values are displaye...

Page 141: ...e staĆ bilizing current of the check zone The stabilizing currents for phases L2 and L3 are disĆ played after selecting addresses and A 5 7 1 1 J M E A S V A L U E f H z 5 0 1 H z Nominal frequency in Hertz I L 1 1 0 0 1 I L 2 1 0 0 3 I L 3 1 0 1 0 I E 1 0 Example for the 4 line mode The display is requested by the pushbutton LED or from the initial display by depressing key ENTER Selection of the...

Page 142: ... applies also for testing and commissioning If a test switch is installed which autoĆ matically short circuits the current transĆ former secondary leads then it is suffiĆ cient to move this switch to the Test position The short circuit switch must however be checked beforehand It is recommended to perform testing with the actual setting values of the protection system If these are not or not yet k...

Page 143: ...n be connected to the second bus if necessary by simulation of isolator status The check zone must be set more sensitive than the bus section specific protection so that the release from the check zone is issued before the release from the bus section specific protection Example The characteristic for the bus section specific protecĆ tion with diff current limit 2 0 no and stabilizing factor 0 8 s...

Page 144: ...ntial and stabilizing currents via the corresponding block addresses 74 75 and 76 2 With I2 0 the current I1 is increased until a trip signal is initiated The current in feeder 1 is then the diff current limit 3 A constant current I1 which is smaller than the set diff current limit is fed into feeder 1 from the test set The current I2 in feeder 2 is slowly inĆ creased until the protection picks up...

Page 145: ...ite polarity refer Fig 6 3 The third bay 3 is connected to a different busbar if neĆ cesssary by simulation of isolator status Test set Bay unit 3 Bay unit 1 Test current I2 Test current I1 TRIP Bay unit 2 A A L Master unit FO FO FO Test steps 1 The currents in bays 1 and 2 must flow in opposite directions In order to check this a current is inĆ jected into feeders 1 and 2 With correct connections...

Page 146: ...meter DIFF SUPERV DA 6303 ZE must be set to active D The differential current limit DA 6305 ZE and the blocking time for the diff current supervision DA 6304 ZE are set as required D The overcurrent limits I TRIP for the respecĆ tive bays blocks 65 must be parameterized to 0 Test steps Parameter DA 6307 ZE set to blocking 1 Bays 1 and 2 are connected to separate busbars 2 Current I1 in bay 1 is gr...

Page 147: ...P CZ alarm only 2 Bays 1 and 2 are connected to the same bus 3 The current in feeder 1 is slowly increased until the supervision of the check zone picks up 4 In feeder 2 a current of 4 x IN is injected If paĆ rameter DIFF SUP CZ DA 6308 ZE was set to block then no trip commands are issued 6 5 4 Testing the pick up values for controlled tripping 6 5 4 1 Test set up as in chapter 6 5 2 1 6 5 4 2 Tes...

Page 148: ...ection is parameterized bay selective to the operation mode unbalance D The differential current limit I DIFF BF and the stabilizing factor STAB FAC BF are set to the reĆ quired values 1 The test currents I1 and I2 must have the same phase angle In order to check the phase angle an identical current is sent through bay 1 and bay 2 from test set with the same normalization With the correct phase an...

Page 149: ...circuit through curĆ rent Diff current approx zero Time measurement is started when the feeder protection trip signal is simulated for feeder 2 The timer is stopped by the trip signal of the busbar protection D The measured time corresponds to the delay time for unbalance plus protection trip time 6 5 6 General recommendations for setting the protection 6 5 6 1 Busbar protection a Differential cur...

Page 150: ...d the actual burden of the current transĆ former n Pn Pi n Pb Pi Pn rated CT burden Pb connected burden protection leads intermediate CT if applicable Pi internal burden of main current transformer The k factor to be set is then k k0F 4Ă k0F 1 The basis for this formula is summarized in appenĆ dix A 1 3 When choosing k the largest burden factor k0F of all the CTs in the outgoing feeders from the b...

Page 151: ...roĆ cessing DA 6204 ZE Range 0 05 to 1 s Recommended setting 2 x circuit breaker trip time f Current limit for determining circuit breaker failure in the event of busbar short circuit and for trip sigĆ nal reset bay selective DA 67XX ZE Range 0 02 to 2 0 I N Recommended setting depends on the lowest short circuit current that can be expected g Time delay for trip repetition DA 6208 ZE Range 0 to 1...

Page 152: ...Supervision time of breaker failure protection reĆ lease DA 6314 ZE Range 0 02 to 10 s Recommended setting 1 s i Delay time for supervision of the CBF release DA 6315 ZE Range 0 06 to 1 s Recommended setting 0 06 s 6 5 6 4 Overcurrent release of the bay trip comĆ mand setting per bay DA 65XX ZE Range 0 to 25 IN IN rated cur rent of current trans formers in feeder Recommended setting depends on low...

Page 153: ...e been set to the correct polarity 3rd step One feeder at a time is released in turn and the differĆ ential and stabilizing currents are read out via DA 7500 ZE DA 7600 ZE The results must be equal to feeder current x normalizing factor CT ratio DA XX06 ZE Otherwise the CT ratio must be checked for correctness This step is repeated individually for each feeder At the conclusion of this all feeders...

Page 154: ...tiation x normalizing factor The stabilizing current should be the same before and after the initiation This step is repeated for each feeder 3rd step Following the conclusion of the test the supervision for the CB failure protection initiation is released DA 6201 ZE 6 6 3 Checking the alarms and trip signals The circuit breaker test can be performed by current injection or by a manual trip comman...

Page 155: ...o eventual thermal overloading of the inĆ put current transformers Currents up to 30 x N are permissible for a duration of 10s After this a cooling down period should be allowed The magnitude of the injected current value is moĆ nitored by means of reading the bay current at the master unit DA 7800 ZE A tolerance of up to 5 is permissible 2 Functional test of the trip circuits per bay unit They ar...

Page 156: ...by the various failure causes a systematical analysis has to be carried out The user is herewith supported by the protection system s diagnostic inforĆ mation 1 Master unit operational event buffer fault event buffer operational events marshalled to LEDs refer to chapter 6 2 7 LED indications on the modules 2 Bay unit operational events marshalled to LEDs refer to chapter 6 4 2 4 The master unit s...

Page 157: ...it refer to Fig 2 3 can be withdrawn from the casing after removing the front ribbon cable For easy removal of the modules the extraction tool which is part of the delivery may be used Attention Electrostatic discharges across the moduĆ les connectors printed conductors and connection pins have to be avoided by previously contacting earthed metal parts i Note Even after disconnection of the power ...

Page 158: ...ch Module SAF Typ Nr UE UA The following standard fuses are used as input fuses Fuse version G 5 x 20 mm slow SV Variant 48 60 V 6MA1890 1AC13 8 A 250 V 110 125 V 6MA1890 1AC14 4 A 250 V 220 250 V 6MA1890 1AC15 2 A 250 V Bottom side Input fuse Plug connector w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 159: ...d yellow LED H4 The cause for the failure which blocked the protection is read from the fault buffer Depressing keys F2 and 1 indicates at the LC display the latest status information in the fault record buffer When communicating via the software DIGSI the contents of the fault record buffer are directly disĆ played after depressing the protection device The further analysis is described in chapte...

Page 160: ... of the failure eventually indication of the faulty processor board or bay unit and an operating instrucĆ tion e g faulty bay unit can be taken out of service if the failure cannot be eliminated immediately Fault BU No 04 no reception Bay 04 o service go on exit Monitor ESC Display in case of auxiliary voltage failure of bay unit no 4 No of cards wrong act 05 must 06 Error Buffer F2 exit Monitor E...

Page 161: ...protection has attempted the third restart The cause for this event can be found in the following events which are read out These events were written previously as can be seen from the relative time tag Leaving the fault buffer is possible by the combination of keys CTRL Z in DIGSI emulation keypad or on the keypad itself by depressing the ESC key twice In most cases disturbances occuring out of a...

Page 162: ...ailure detected requires replacement The affected module is marked by F 1 YY 02 ZPS BSZ1 03 ZPS BSZ2 04 ZPS BSZ3 05 ZPS SK1 etc 0A ZPS SK6 8 0F 601 1002 1004 1007 1008 Error in the station configuration Check the configured number of bays and isolators check number and location of the bus couplers and sectionalizers verify sequence of confiĆ guration bus coupler before outgoing feeder before secti...

Page 163: ...BSZ3 defective replace module yes 16 1D 102 600 1 5 V auxiliary voltage failure for ZPS modules detected 17 1F 600 xxyy zzvv 1 The number of the modules fitted in the master unit xxyy differs from the configured station design zzvv requires verification of the configuĆ ration eventually also verification of the coding of the modules accorĆ ding to chapter 5 2 5 If the programmed configuration data...

Page 164: ...ected For this purpose the 5th bay is configured non exiĆ stent by parameter DA 0503 ZE If start up is comĆ pleted correctly after switching on the master unit then further bays can be configured as existent until the original configuration of the station is reĆ ached It should be noted that the first bay configured as non existent defines the design of the station Failures in data transmission ca...

Page 165: ...face to the master unit is connected to the receiver of the supplementary interface and the receiver of the interface to the master unit is connected to the transmitter of the supplementary interface by a FO cable FO cables are delivered together with the master unit In the event of a transmission error in control or alarm direction the alarm Fail com CU is issued This alarm can be allocated to an...

Page 166: ... w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 167: ...rding to IEC 255 21 1 class 2 and IEC 255 21 2 class 1 must be ensured In case it is unavoidable to replace single modules then the EED regulations have to be followed handling of electrostatic endangered devices Even after switching off the auxiliary voltage or withdrawing the module dangerous volĆ tages may be present capacitor storage Electrostatic discharges via the components printed conducto...

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Page 169: ...nge for storage to values between 10 _C and 35 _C in order to avoid early ageing of the electrolytic capacitors in the power supplies Furthermore it is recommended to connect the devices every two years to auxiliary voltage so that the electrolytic capacitors in the power supplies are formatted The same procedure should be folloĆ wed before installing these devices In case of extreme climatic cond...

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Page 171: ... of service 7305 Bay 5 on BZ2 7344 Bay 44 not connected 7345 Bay 45 not connected 7346 Bay 46 not connected 7347 Bay 47 not connected 7348 Bay 48 not connected 7349 Sect isol not connected 2 7350 Sect isol not connected 7351 Sect isol not connected 7352 Sect isol not connected 7369 Sect isol not connected 7370 Sect isol not connected 7371 Sect isol not connected 7372 Sect isol not connected Note T...

Page 172: ...L1 2 0 I Ino 3 7569 Id BZ12L2 2 0 I Ino 3 7570 Is BZ12L2 2 0 I Ino 3 7571 Id BZ12L3 2 0 I Ino 3 7572 Is BZ12L3 2 0 I Ino 3 7600 ANNUNC DI ST curr BSZ3 7601 Id BZ01L1 3 0 I Ino 3 7602 Is BZ01L1 3 0 I Ino 3 7603 Id BZ01L2 3 0 I Ino 3 7604 Is BZ01L2 3 0 I Ino 3 7605 Id BZ01L3 3 0 I Ino 3 7606 Is BZ01L3 3 0 I Ino 3 7667 Id BZ12L1 3 0 I Ino 3 7668 Is BZ12L1 3 0 I Ino 3 7669 Id BZ12L2 3 0 I Ino 3 7670 I...

Page 173: ...1 depending on setting DA 6312 ZE Bay number Bay number 01 to 48 Binary input Operational event ZPS BSZ module Bay unit Function No Summation current Coming event Coming going event Light emitting diode Phases Circuit breaker Isolator run time fault LED indication is stored memorized Measured value Isolator fault Fault event Fault number Group alarm designates the allocation of the single alarm to...

Page 174: ...N MON T 12 M C G 13 OE LED reset LED reset C 14 FE Missing TRIP command release no TripReleas BXY 30 M C BN 15 OE Bay out of service out of serv BXY 11 C G BN 16 FE Trip command for bus zone 01 L1 TRP BZ01 L1 zzz 30 17 M C FN 17 FE Trip command for bus zone 02 L1 TRP BZ02 L1 zzz 30 18 M C FN 18 FE Trip command for bus zone 03 L1 TRP BZ03 L1 zzz 30 19 M C FN 19 FE Trip command for bus zone 04 L1 TR...

Page 175: ... 30 27 M C FN 43 FE Trip command for bus zone 12 L2 TRP BZ12 L2 zzz 30 28 M C FN 44 FE Trip repetition L2 Trip Rep L2 BXY 14 M C BN 45 46 47 48 FE Trip command for bus zone 01 L3 TRP BZ01 L3 zzz 30 17 M C FN 49 FE Trip command for bus zone 02 L3 TRP BZ02 L3 zzz 30 18 M C FN 50 FE Trip command for bus zone 03 L3 TRP BZ03 L3 zzz 30 19 M C FN 51 FE Trip command for bus zone 04 L3 TRP BZ04 L3 zzz 30 2...

Page 176: ...solator 4 position OPEN Isol4 OFF BXY 1 C BN 78 OE Isolator 4 status fault Isol4 Flt pla BXY 84 1 C BN 79 OE Isolator 4 fault run time Isol4 Flt run BXY 85 1 C BN 80 OE Isolator 5 position CLOSED Isol5 ON BXY 1 C BN 81 OE Isolator 5 position OPEN Isol5 OFF BXY 1 C BN 82 OE Isolator 5 status fault Isol5 Flt pla BXY 84 1 C BN 83 OE Isolator 5 fault run time Isol5 Flt run BXY 85 1 C BN 84 OE Isol sta...

Page 177: ...superv bus z 11 L1 on BSZ2 Id sup BZ11 L1 2 92 M C G 107 OE Diff curr superv bus z 12 L1 on BSZ2 Id sup BZ12 L1 2 92 M C G 108 109 110 111 112 OE Diff curr superv bus z 01 L2 on BSZ2 Id sup BZ01 L2 2 92 M C G 113 OE Diff curr superv bus z 02 L2 on BSZ2 Id sup BZ02 L2 2 92 M C G 114 OE Diff curr superv bus z 03 L2 on BSZ2 Id sup BZ03 L2 2 92 M C G 115 OE Diff curr superv bus z 04 L2 on BSZ2 Id sup ...

Page 178: ... superv bus z 11 L3 on BSZ2 Id sup BZ11 L3 2 92 M C G 139 OE Diff curr superv bus z 12 L3 on BSZ2 Id sup BZ12 L3 2 92 M C G 140 141 142 143 144 OE Diff curr superv bus z 01 L1 on BSZ3 Id sup BZ01 L1 3 92 M C G 145 OE Diff curr superv bus z 02 L1 on BSZ3 Id sup BZ02 L1 3 92 M C G 146 OE Diff curr superv bus z 03 L1 on BSZ3 Id sup BZ03 L1 3 92 M C G 147 OE Diff curr superv bus z 04 L1 on BSZ3 Id sup...

Page 179: ...r superv bus z 11 L2 on BSZ3 Id sup BZ11 L2 3 92 M C G 171 OE Diff curr superv bus z 12 L2 on BSZ3 Id sup BZ12 L2 3 92 M C G 172 173 174 175 176 OE Diff curr superv bus z 01 L3 on BSZ3 Id sup BZ01 L3 3 92 M C G 177 OE Diff curr superv bus z 02 L3 on BSZ3 Id sup BZ02 L3 3 92 M C G 178 OE Diff curr superv bus z 03 L3 on BSZ3 Id sup BZ03 L3 3 92 M C G 179 OE Diff curr superv bus z 04 L3 on BSZ3 Id su...

Page 180: ...02 OE Failure in auto testing BSZ 1 L3 FLT AUT L3 1 BXY 0 1 5 1 C BN 203 OE Failure in auto testing BSZ 2 L3 FLT AUT L3 2 BXY 0 1 5 1 C BN 204 OE Failure in auto testing BSZ 3 L3 FLT AUT L3 3 BXY 0 1 5 1 C BN 205 OE Failure in auto testing com alarm no alarm text 0 1 5 5 M 206 OE 15V supervision CU 15V superv CU 1 10 M C G 207 OE 24V supervision CU 24V superv CU 1 10 M C G 208 OE Request restart r...

Page 181: ... K TS Figure A 9 1 Short circuit on a feeder with CT saturation To determine the point in time Ts at which saturation occurs the burden factor u must be considered TS sat K u sat A B Figure A 9 2 Current time characteristic If the CT is burdened with K u sat then it will satuĆ rate after time TS whereby area AÇÇ area BÉÉ c3 u 1 cos wTS 2 c4 If equations c2 and c4 are combined then K U 4 Uć1 Ǹ c5 T...

Page 182: ...sol 5 OFF 1 L Isol 5 L initialize BF L1 L initialize BF L2 L initialize BF L3 L L Circuit breaker CLOSE com L L Auxiliary supply L Trip command L1 1 Trip command L1 2 Trip command L2 1 Trip command L2 2 Trip command L3 1 Trip command L3 2 Trip command 1 Trip command 2 transfer trip Unit fault 1 Unit fault 2 L Circuit breaker TRIP L L BF start L L Circuit breaker test L L Circuit breaker fault L L ...

Page 183: ...pply L L L L L L L ZPS SK 1 to 6 Interfaces to the bay units 1 LED acknowledgement Freeze in fault record buffer Release fault record buffer Release blocking after pick up of differential current supervision Release blocking after isolator failure Erase event buffer free Protection blocked Alarm without protection blocking Diff current supervision bus zone selec Diff current supervision checkzone ...

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Page 185: ...n on X33 off off off off off off off off off off X34 on off off off off off off off off off Table A 9 3 Basic position of switches on ZPS module master unit ZPS function Switch SBK 1 BSZ 1 BSZ 2 BSZ 3 SK 1 SK 2 SK 3 SK 4 SK 5 SK 6 S2 S2 1 off off off off off off off off off off S2 2 off off off off off off off off off off S2 3 off off off off off off off off off off S2 4 off on on on on on on on o...

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Page 187: ...028 044 060 TripRepL1 2 3 BXY 15 Breaker failure transfer trip 029 transf Trp BXY 16 TRIP busbar high speed TRIP 3 030 TRPBZ01 L1 zzz TRPBZ12 L1 zzz TRPBZ01 L2 zzz TRPBZ12 L2 zzz TRPBZ01 L3 zzz TRPBZ12 L3 zzz zzz Fault No 17 Busbar protection TRIP command BZ1 016 032 048 TRPBZ01 L1 2 3 zzz 18 Busbar protection TRIP command BZ2 017 033 049 TRPBZ02 L1 2 3 zzz 19 Busbar protection TRIP command BZ3 01...

Page 188: ... line 2nd display line FNo Note 6201 6400 6401 6402 6403 6404 6405 ALARM RELAY 1 MARSHALLING COMMAND RELAY 1 COMMAND RELAY 2 COMMAND RELAY 3 COMMAND RELAY 4 COMMAND RELAY 5 Bay o of serv COMMAND RELAY CBF Trip L1 BB Trip L123 CBF Trip L123 CB Test L1 CBF Trip L2 BB Trip L123 CBF Trip L123 CB Test L2 CBF Trip L3 BB Trip L123 CBF Trip L123 CB Test L3 BB trip L123 CBF Trip L123 CBF Trip L1 CBF Trip L...

Page 189: ... 3 6 5 3 3 5 45 1 4 3 6 5 3 3 5 45 1 4 3 6 5 3 3 5 45 1 4 64 3 1305 5 0 53 4 3 53 1 0 9 065 0 4 37 05 03 03 3 4 5 39 1654 3 3 45 41 9 41 9 0 05 40 04 40 1 40 04 40 1 40 04 40 1 40 04 40 1 40 04 40 1 0 3 5 45 1 05 34 9 0 0 4 3 40 503 45 564 4 04 03 40 503 40 503 45 564 4 1 03 40 503 40 503 45 564 4 04 03 40 503 40 503 45 564 4 1 03 40 503 40 503 45 564 4 04 03 40 503 40 503 45 564 4 1 03 40 503 40 ...

Page 190: ...phase L2 Actual current of phase L3 Actual earth current Operational measured value diff current phase L1 in Operational measured value diff current phase L2 in Operational measured value diff current phase L3 in Operational measured value stab current phase L1 in Operational measured value stab current phase L2 in Operational measured value stab current phase L3 in Actual frequency f Actual curre...

Page 191: ... 5 4 1 0 0 0 30 1 4 0 0 0 0 4 1 1 1 1 1 1 0 0 01 1 0 0 01 1 0 01 0 4 10 2 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 4 10 2 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 192: ... BZorAuxZ BZ01 BZ01 min 0 max 4 24 2 0 not existent 1 4 01 12 BB01 BB04 BZ01 BZ12 1 4 13 24 BZ01 BZ04 AB01 AB12 4902 BB BZorAuxZ non existent like DA 4901 4924 BB BZorAuxZ non existent like DA 4901 _______________ DA 4901 4924 are only supported by DIGSI BB main busbar no 01 04 BZ bus zone no 01 12 CS bus coupler section no 13 24 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 193: ...0107 BZ ISO1 B01 on BZ01 min 000 00 max 123 24 0 non existent 1 12 on BZ01 BZ12 13 24 on AB01 AB12 1 2 23 24 on BZ01 BZ02 AB11 AB12 101 124 on BZ01 ON AB12 ON 101 2 on BZ01 BZ02ON 123 24 on AB11 AB12ON 0108 BZ ISO2 B01 non existent like BZ ISO1 0109 BZ ISO3 B01 non existent like BZ ISO1 0110 BZ ISO4 B01 non existent like BZ ISO1 1 0111 BZ ISO5 B01 non existent non existent existent 0200 DESIGN DAT...

Page 194: ... 00 5107 OFFSET SUPV 10 V min 0 10 max 50 5108 15 V SUPV 1 50 V min 0 50 max 2 50 5200 SYST DATA Serial link 5201 TERMBAUD CU 19200 Baud min 1 200 max 38400 5400 DESGN DATA Common configur 5401 PROT TR BUS blocked blocked released 5402 BAY DC FAIL OLD isol status OLD isol status isol CLOSED 5403 ISOL ST 1 1 OLD isol status OLD isol status isol CLOSED 5404 BB ISOLAT 4 BB isolator TR isolator BB iso...

Page 195: ... BF BI MODE 1 chanelWithSup 1 chanel no sup 1 chanelWithSup 2 chanel no Sup 2 chanelWithSup 6202 STAB FAC BF 50 min 0 00 max 0 80 6203 I DIFF BF 2 I BF DA 6700 3 6204 TIME UNB BF 25 s min 0 05 max 1 00 6205 T BF IMPULS 50 s min 0 05 max 1 00 6206 T CB FAULT 10 s min 0 00 max 1 00 6207 TR REPOPMOD single phase single phase three phase 6208 T TRIP REP 12 s min 0 00 max 1 00 _______________ Ino Norma...

Page 196: ...ax 10 00 6315 FLT T BF CI 06 s min 0 06 max 1 00 6316 FLTREC RELE automatic automatic manual 4 6317 RELE BOS BU released blocked released _______________ For supervision of run time breaker fault and auxiliary voltage Ino Normalized nominal current related to base current transformer current transformer with highest transformation ratio IN Nominal current of bay current transformer Two fault recor...

Page 197: ... 00 max 25 00 6600 SETTINGS BF OpMode 01 48 6601 BF OPMD B01 BZ unbalance not existent external BZ unbalance trip rep unbal I query trip rep I quer trip rep unb imp 6602 BF OPMD B02 BZ unbalance like DA 6601 6648 BF OPMD B48 BZ unbalance like DA 6601 6700 SETTINGS I BF Bay 1 48 6701 I BF BAY 01 50 I IN 1 min 0 10 max 2 00 6702 I BF BAY 02 50 I IN 1 min 0 10 max 2 00 6748 I BF BAY 48 50 I IN 1 min ...

Page 198: ...g by pick up isolator failure run time status auxiliary voltage failure or test failure 8700 CONTROL Reset annun buf 4 Input J related to fault events and operational events _______________ Test start requires switched off setting DA 6311 ZE CB test possible only if bay is out of service and I bay I limit value DA 6313 If two fault record buffers are frozen then both will be released simultaneousl...

Page 199: ...R UNIT 4501 Com CU Bay out of service 4502 Com CU Bay in sevice Addresses for alarms measured values etc 7SS521 5000 CHANGE 5700 OPERATIONAL MEASURED VALUES 5701 IL1 XXXX X Actual current in phase L1 5702 IL2 XXXX X Actual current in phase L2 5703 IL3 XXXX X Actual current in phase L3 5704 IE XXXX X Actual earth current 5705 IDL1 XXXX X Oper meas value diff current phase L1 in 5706 IDL2 XXXX X Ope...

Page 200: ... 14 CB CLOSE com A 6115 BINARY INPUT 15 CBF rel A 6116 BINARY INPUT 16 CB test A 6117 BINARY INPUT 17 CB open A 6118 BINARY INPUT 18 not marshalled 6119 BINARY INPUT 19 CB fail A 6120 BINARY INPUT 20 Bay o of ser A 6200 MARSHALLING SIGNAL RELAYS 6201 SIGNAL RELAY 1 pre setting Bay o of ser nm 2 6300 MARSHALLING LED INDICATORS pre setting 6301 LED 1 red Isolator 1 closed nm 2 6302 LED 2 green Isola...

Page 201: ...p L123 BF Trip L1 BF Trip L2 BF Trip L3 CB Test L1 CB Test L2 CB Test L3 6405 TRIP RELAY 5 BB intertrip 7000 OP SYSTEM CONFIGURATION 7100 INTEGRATED OPERATION 7120 OPER 1st line Operational measured value line 1 7121 OPER 1st line Operational measured value line 1 primary secondary 7122 OPER 2nd line Operational measured value line 2 7123 OPER 2nd line Operational measured value line 2 primary sec...

Page 202: ... 0 0 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 203: ...iple 4 4 Response threshold pick up 4 10 Separate evaluation of half cycles 4 7 Stabilization 4 5 Summary of the measuring method 4 10 Weighted evaluation of the initial values 4 9 Circuit breaker failure protection 3 6 busbar faults 4 24 during a feeder short circuit 4 18 General data 3 6 Initiation by external 4 24 Pulse mode 4 23 TRIP repetition with current sensor 4 19 Unbalancing 4 20 with cu...

Page 204: ...6 37 command relays block 64 6 43 Introduction 6 37 LED indications 6 37 LED indications block 63 6 41 Prerequisite and language for operation 6 34 Read out of operational measured values block 57 6 46 Setting function parameters block 11 6 44 Settings via the integrated operation block 71 6 36 Test and control function block 40 6 45 Operation of complete unit 4 1 Operational control features 6 20...

Page 205: ... commissioning 6 48 Checking the differential current limit for differential current supervision 6 52 controlled tripping Test set up 6 53 Test steps 6 53 differential current limit Bus section specific protection 6 52 Check zone 6 53 Test set up 6 52 Functional CBF Checking the time delay with mode of operation forced bus zone unbalance 6 55 Pick up characteristic in mode of operation forced bus ...

Page 206: ... X w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 207: ...ading this manual kindly enter them in this form together with any comments or suggestions for Address form together with any comments or suggestions for improvement that you may have Telephone no Fax no Suggestions Corrctions for manual Order no Edition 7SS52 DistributedBusbar Circuit Breaker Failure ProĆ tection SIPROTEC 7SS52 Operation Manual E50410 A0012 U501 A1 7691 May 1998 w w w E l e c t r...

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Page 209: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

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