1 2 3 4 A - SIPROTEC

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Functions 2.1 General 104 No. Information Type of Information 30267 IL2S3: VI Primary fault current IL2 side3 30268 IL3S3: VI Primary fault current IL3 side3 30269 IL1S4: VI Primary fault current IL1 side4 30270 IL2S4: VI Primary fault current IL2 side4 30271 IL3S4: VI Primary fault current IL3 side4 30272 IL1S5: VI Primary fault current IL1 side5 30273 IL2S5: VI Primary fault current IL2 side5 30274 IL3S5: VI Primary fault current IL3 side5 30275 I8: VI Primary fault current I8 30276 I9: VI Primary fault current I9 30277 I10: VI Primary fault current I10 30278 I11: VI Primary fault current I11 30279 I12: VI Primary fault current I12 30351 >ManualClose M1 SP >Manual close signal measurement loc. 1 30352 >ManualClose M2 SP >Manual close signal measurement loc. 2 30353 >ManualClose M3 SP >Manual close signal measurement loc. 3 30354 >ManualClose M4 SP >Manual close signal measurement loc. 4 30355 >ManualClose M5 SP >Manual close signal measurement loc. 5 30356 >ManualClose S1 SP >Manual close signal side 1 30357 >ManualClose S2 SP >Manual close signal side 2 30358 >ManualClose S3 SP >Manual close signal side 3 30359 >ManualClose S4 SP >Manual close signal side 4 30360 >ManualClose S5 SP >Manual close signal side 5 Comments <strong>SIPROTEC</strong>, 7UT6x, Manual C53000-G1176-C230-2, Release date 06.2012
2.2 Differential Protection <strong>SIPROTEC</strong>, 7UT6x, Manual C53000-G1176-C230-2, Release date 06.2012 Functions 2.2 Differential Protection The differential protection represents the main protection feature of the device. It is based on current comparison under consideration of the transformation ratio of the transformer.7UT6x is suitable for unit protection of transformers, generators, motors, reactors, short lines, also with feeders, and (under observance of the available number of current inputs) for busbar arrangements. Protection of generator/transformer units, transformer/winding combinations or transformer/starpoint former, can also be realised. 7UT612 allows up to two, 7UT613 and 7UT633 allow up to 3, 7UT635 allows up to 5 three-phase measuring locations. 7UT6x can be used as a single-phase differential protection relay. In this case, 7UT612 allows up to 7, 7UT613 and 7UT633 allow up to 9, and 7UT635 up to 12 measuring locations, e.g. currents from a busbar with up to 7 or 9 or 12 feeders. The protected zone is selectively limited by the CTs at its ends. 2.2.1 Functional Description of the Differential Protection Processing of the measured values depends on the way the differential protection is used. This section discusses first the differential protection function in general, regardless of the type of protected object. A singlephase system is referred to. Particulars with regard to the individual protected objects follow thereafter. Basic Principle with Two Sides Differential protection is based on current comparison. It makes use of the fact that a protected object carries always the same current i (dashed line in 2-17 below) at its two sides in healthy operation. This current flows into one side of the considered zone and leaves it again on the other side. A difference in currents is a clear indication of a fault within this section. If the actual current transformation ratio is the same, the secondary windings of the current transformers CT1 and CT2 at the sides of the protected object can be connected to form a closed electric circuit with a secondary current I; a measuring element M, which is connected to the electrical balance point, remains at zero current in healthy operation. Figure 2-17 Basic principle of differential protection for two sides (single-phase illustration) When a fault occurs in the zone limited by the transformers, a current i 1 + i 2, which is proportional to the fault currents I 1 + I 2 flowing in from both sides is fed to the measuring element. As a result, the simple circuit shown in Figure 2-17 ensures a reliable tripping of the protection if the fault current flowing into the protected zone during a fault is high enough for the measuring element M to respond. 105
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SIPROTEC Differential Protection 7U
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Preface Additional Support Training
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Preface Typographic and Symbol Conv
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Preface 8 SIPROTEC, 7UT6x, Manual C
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Contents 10 2.2 Differential Protec
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Contents 12 2.14 Undervoltage Prote
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Contents 14 2.23 Average Values, Mi
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Contents A Appendix. . . . . . . .
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Introduction 1.1 Overall Operation
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Introduction 1.1 Overall Operation
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Introduction 1.2 Application Scope
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Introduction 1.3 Characteristics Di
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Introduction 1.3 Characteristics Un
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Introduction 1.3 Characteristics Ex
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Introduction 1.3 Characteristics 30
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Functions 2.1 General 2.1 General 3
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Functions 2.1 General 2.1.1.3 Infor
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Functions 2.1 General 2.1.3 Configu
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Functions 2.1 General Differential
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Functions 2.1 General Single-phase
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Functions 2.1 General Undervoltage
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Functions 2.1 General 44 Addr. Para
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Functions 2.1 General 2.1.4 Power S
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Functions 2.1 General 48 Figure 2-2
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Functions 2.1 General 50 Note If yo
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Functions 2.1 General Special Consi
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Page 113 and 114: Figure 2-25 Tripping logic of the d
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SIPROTEC, 7UT6x, Manual C53000-G117
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2.4.1.2 Inverse Time Overcurrent Pr
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2.4.1.5 Inrush Restraint SIPROTEC,
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Figure 2-74 Fast busbar protection
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Functions 2.4 Time Overcurrent Prot
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2.4.2.3 Information List No. Inform
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Functions 2.6 Dynamic Cold Load Pic
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Functions 2.6 Dynamic Cold Load Pic
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Functions 2.7 Single-Phase Time Ove
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Functions 2.7 Single-Phase Time Ove
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2.8 Unbalanced Load Protection SIPR
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Pickup, Trip Dropout SIPROTEC, 7UT6
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Thermal Stage Pickup, Warning Therm
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Logic SIPROTEC, 7UT6x, Manual C5300
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Example: Machine I N = 483 A SIPROT
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Functions 2.9 Thermal Overload Prot
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Functions 2.9 Thermal Overload Prot
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Functions 2.11 Overexcitation Prote
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Delay and Logic Two delay times are
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Functions 2.13 Forward Power Superv
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Functions 2.14 Undervoltage Protect
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2.15.1 Function Description SIPROTE
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Figure 2-106 Logic diagram of frequ
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2.16.4 Information List No. Informa
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Delay Time and Breaker Failure Trip
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Initiation SIPROTEC, 7UT6x, Manual
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2.18 External Trip Commands 2.18.1
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Functions 2.19 Monitoring Functions
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The following figure shows the logi
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No. Information Type of Information
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Functions 2.20 Protection Function
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Functions 2.20 Protection Function
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Functions 2.21 Disconnection of Mea
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Functions 2.22 Additional Functions
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2.22.4 Differential and Restraining
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2.22.10 Commissioning Aids SIPROTEC
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2.23 Average Values, Minimum and Ma
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2.23.2 Min/Max Measurement Setup 2.
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Functions 2.24 Command Processing C
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Functions 2.24 Command Processing 3
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Mounting and Commissioning 3.1 Moun
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Mounting and Commissioning 3.1 Moun
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RTD-Box SIPROTEC, 7UT6x, Manual C53
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The ratings of the fuse are printed
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Board Arrangement 7UT613/63x SIPROT
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3.1.2.3 Switching Elements on Print
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Processor Module C-CPU-2 SIPROTEC,
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Input/Output Board C-I/O-2 (only 7U
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The input/output board C-I/O-2 carr
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Input/Output Board C-I/O-9 (only 7U
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Table 3-22 Assignment of jumpers fo
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Note SIPROTEC, 7UT6x, Manual C53000
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Table 3-24 Exchange Interface Modul
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RS485 Interface SIPROTEC, 7UT6x, Ma
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3.1.3 Mounting 3.1.3.1 Panel Flush
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3.1.3.2 Rack and Cubicle Mounting S
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Figure 3-25 Installation of a 7UT63
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System interface SIPROTEC, 7UT6x, M
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RTD box SIPROTEC, 7UT6x, Manual C53
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3.3.1 Test Mode / Transmission Bloc
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Structure of the Dialog Box SIPROTE
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Structure of the Dialog Box SIPROTE
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An update is made: Exiting the Proc
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Table 3-30 Indications on matching
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Flexible Functions Current Function
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Mounting and Commissioning 3.3 Comm
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Figure 3-46 Phasor Diagram of the P
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Mounting and Commissioning 3.4 Fina
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Technical Data 4.1 General 4.1 Gene
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Technical Data 4.1 General 4.1.5 Co
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Operating Range Frequency (Transfor
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Operating Times (Generators, Motors
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Operating Time (Busbars, Short Line
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Technical Data 4.4 Time Overcurrent
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Technical Data 4.8 Unbalanced Load
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Technical Data 4.8 Unbalanced Load
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Technical Data 4.11 Overexcitation
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Technical Data 4.20 User-defined Fu
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Technical Data 4.20 User-defined Fu
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Time Synchronisation Commissioning
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4.23.3 Panel Surface Mounting (Encl
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4.23.5 Panel Surface and Cabinet Mo
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4.23.7 RTD box Figure 4-26 Dimensio
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Appendix A This appendix is primari
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Additional Specification L for Furt
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Additional Specification L for Furt
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1) Only in connection with position
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Exchangeable Interface Modules SIPR
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SIMATIC CFC 4 Varistor SIPROTEC, 7U
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7UT613*-*D/E Figure A-2 Overview di
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7UT633*-* D/E Figure A-3 General di
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7UT633*-* P/Q Figure A-4 General di
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7UT635*-* D/E Figure A-5 General di
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7UT635*-* P/Q Figure A-6 General di
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7UT613*-* B Figure A-8 General diag
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7UT633*-* B Figure A-9 General diag
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7UT633*-* N Figure A-10 General dia
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7UT635*-* B Figure A-11 General dia
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7UT635*-* N Figure A-12 General dia
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Figure A-22 Connection example 7UT6
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A.3.2 Voltage Transformer Connectio
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A.3.3 Assignment of Protection Func
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Appendix A.5 Default Settings A.5 D
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Appendix A.5 Default Settings A.5.5
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Appendix A.5 Default Settings A.5.6
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Addr. Parameter Setting Options Def
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A.8 Settings Addresses which have a
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Addr. Parameter Function C Setting
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A.9 Information List SIPROTEC, 7UT6
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No. Description Function Type of In
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Appendix A.9 Information List 640 N
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Literature /1/ SIPROTEC 4 System Ma
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LVU Master Metered value MLFB Modem
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Index A Acknowledgement of commands
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Fault Value Storage Storage Criteri
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P Parameter Group Changeover 36, 97
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Z Zero Current 124 Zero Sequence Cu
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