A.3 Connection Examples
5257UT613/63x ManualC53000-G1176-C160-2
Figure A-14 Connection example 7UT613 for a three-phase power transformer
A Appendix
526 7UT613/63x ManualC53000-G1176-C160-2
Figure A-15 Connection example 7UT613 for an earthed auto-transformer with current transformer between starpoint and earthing point
A.3 Connection Examples
5277UT613/63x ManualC53000-G1176-C160-2
Figure A-16 Connection example 7UT613 for an earthed auto-transformer with brought-out delta winding capable of car-rying load (tertiary winding) and current transformer between starpoint and earthing point
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528 7UT613/63x ManualC53000-G1176-C160-2
Figure A-17 Connection example 7UT613 for an auto-transformer bank with protected object auto-transformer branch-points, with individually accessible earthing electrodes equipped with CTs (M3). The CTs on the earthing side constitute a separate side for current comparison for each transformer of the bank. The starpoint of the CTs at M3 is routed via an auxiliary input (IZ1), which allows realisation of restricted earth fault protection and/or earth overcurrent protection.
A.3 Connection Examples
5297UT613/63x ManualC53000-G1176-C160-2
Figure A-18 Connection example 7UT613 for a single-phase power transformer with current transformer between starpoint and earthing point
Figure A-19 Connection example 7UT613 for a single-phase power transformer with only one current transformer (right side)
A Appendix
530 7UT613/63x ManualC53000-G1176-C160-2
Figure A-20 Connection example 7UT613 for a generator or motor
Figure A-21 Connection example 7UT613 as transversal differential protection for a generator with two windings per phase
A.3 Connection Examples
5317UT613/63x ManualC53000-G1176-C160-2
Figure A-22 Connection example 7UT613 for an earthed shunt reactor with current trans-former between starpoint and earthing point
A Appendix
532 7UT613/63x ManualC53000-G1176-C160-2
Figure A-23 Connection example 7UT613 as high-impedance protection on a transformer winding with earthed starpoint (the illustration shows the partial connection of the high-impedance protection); IZ3 is connected to the high-sensitivity input
A.3 Connection Examples
5337UT613/63x ManualC53000-G1176-C160-2
Figure A-24 Connection example 7UT613 for a three-phase power transformer with current transformers between star-point and earthing point, additional connection for high-impedance protection; IZ3 connected to the high-sensitivity input
A Appendix
534 7UT613/63x ManualC53000-G1176-C160-2
Figure A-25 Connection example 7UT613 as single-phase busbar protection for 7 feeders, illustrated for phase L1
A.3 Connection Examples
5357UT613/63x ManualC53000-G1176-C160-2
Figure A-26 Connection example 7UT613 as busbar protection for 6 feeders, connected via external summation trans-formers (SCT) — partial illustration for feeders 1, 2 and 6
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536 7UT613/63x ManualC53000-G1176-C160-2
A.3.2 Voltage Transformer Connection Examples
Figure A-27 Voltage connections to three wye-connected voltage transformers (only in 7UT613 and 7UT633)
A.3 Connection Examples
5377UT613/63x ManualC53000-G1176-C160-2
Figure A-28 Voltage connections to three wye-connected voltage transformers with addition-al open-delta windings (e-n–windings; only in 7UT613 and 7UT633)
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538 7UT613/63x ManualC53000-G1176-C160-2
A.3.3 Assignment of Protection Functions to Protected Objects
Not every protection function implemented in the 7UT613/63x is useful or even possi-ble for every conceivable protected object. The following table shows which protection functions are possible for which protected objects. Once a protected object has been configured (as described in subsection 2.1.3), only those protection functions are allowed and settable that are valid according to the table below.
Figure A-29 Utilisation of the protective functions in different protected objects
A.4 Current Transformer Requirements
5397UT613/63x ManualC53000-G1176-C160-2
A.4 Current Transformer Requirements
Formula symbols/terms used (in accordance with IEC 60044-6, as defined)
The transient rated dimensioning factor Ktd depends on the device version and the primary time constant Tp. For the devices 7UT613/63x with a required saturation-free time of only 1/4 period, the influence of Tp is negligible.
For CT's that are defined by the rated symmetrical short-circuit current factor Kssc and the rated burden Rb (e.g. 5P, 10P), the effective K’ssc can be calculated by the formula:
The minimum required K’ssc can be calculated by the formula:
Condition: K’ssc (required) ≤ K'ssc (r.m.s.)
Kssc = rated symmetrical short-circuit current factor(example: CT 5P20 → KSSC = 20)
K'ssc = effective symmetrical short-circuit current factorKtd = rated transient dimensioning factorIscc max (ext.
fault)
= maximum symmetrical through flowing fault current
Ipn = CT rated primary currentIsn = CT rated secondary currentRct = secondary winding d.c. resistance at 75 oC
(or other specified temperature)Rb = rated resistive burdenR'b = Rlead + Rrelay = connected resistive burdenTp = primary time constant (net time constant) Vk = knee-point voltage in V (r.m.s.)Rrelay = relay burden
with:I = single conductor length from CT to relay in mρ = specified resistance = 0.0175 Ω mm2/m (copper wires) at 20 oC
(or other specified temperature)A conductor cross-section in mm2
A Appendix
540 7UT613/63x ManualC53000-G1176-C160-2
Current Transform-er in accordance with BS 3938/IEC 60044-1 (2000)
The values of an IEC class P transformer can be converted to the values for an IEC class PX (BS class X) transformer by using the following formula:
Example: IEC 60044: 600/1, 5P10, 15VA, Rct = 4 Ω
IEC PX or BS class X:
Current Transform-er in accordance with ANSI/IEEE C 57.13
Class C of this standard defines the CT by its secondary terminal voltage at 20 times rated current, for which the ratio error shall not exceed 10%. Standard classes are C100, C200, C400 and C800 for 5A rated secondary current.
The approximate terminal voltage can be derived from the IEC values, as follows:
ANSI transformer definition
Us.t.max = 20 • 5A • Rb • Kssc/20
with:
Rb = Pb/Isn2 and Isn = 5A
one derives at
Us.t.max = Pb • Kssc/5A
Example: IEC 60044: 600/5, 5P20, 25VA
ANSI C57.13:
Us.t.max = 25VA • 20/5A = 100V, in accordance with class C100
The calculations listed above are simplified in order to facilitate a quick and safe CT calculation/verification. An accurate calculation/verification can be carried out with the Siemens CTDIM program as from V3.21. The results of the CTDIM program have been released by the device manufacturer.
Relay type transientdimensioning factor Ktd
minimum required factorK'SSC
min. requiredkneepoint voltage
7UT613/63x Transf.3
BB/line3
Gen./Motor5
A.4 Current Transformer Requirements
5417UT613/63x ManualC53000-G1176-C160-2
Mismatching factor for 7UT613/63x, (limited resolution of the measurement)
Caution: If earth fault differential protection is used, the requirement for the phase current transformer of the REF side is as follows: 1/4 ≤ FAdap ≤ 4, (for the starpoint trans-former remains 1/8 ≤ FAdap ≤ 8)
Figure A-30 CT verification for Devices 7UT613/63x
The CB layout within the power station unit is not specified.
where:InO = rated current of the protected object
(in relation to the parameterised rated current)UnO = parameterised rated current of the protected objectINrelay = nominal device currentSNmax = maximum (rated) power of the protected object
(for transformers: side with the largest (rated) load)
x”d = sub-transient direct-axis reactance of the generator in p.u.Uk = transformer short-circuit voltage HV - LV in %Rrelay = assumed with 0.1 Ω, (the consumption of the above devices is below
0.1 VA)
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542 7UT613/63x ManualC53000-G1176-C160-2
with:c = voltage factor (for generators: 1,1)SNO
M
= nominal power of the transformer in kVA
UNO
M
= nominal voltage of the transformer in kV
SNG = nominal power of the generator in kVAUNG = nominal voltage of the generator in kV
A.5 Default Settings
5437UT613/63x ManualC53000-G1176-C160-2
A.5 Default Settings
When the device leaves the factory, a large number of LED indicators, binary inputs and outputs as well as function keys are already preset. They are summarized in the following tables.
A.5.1 LEDs
Table A-1 LED Indication Presettings
A.5.2 Binary Input
Table A-2 Binary input presettings for all devices and ordering variants
A.5.3 Binary Output
Table A-3 Output relay presettings for all devices and ordering variants
LEDs Allocated Func-tion
Function No. Description
LED1 Relay TRIP 511 Relay GENERAL TRIP commandLED2 Relay PICKUP 501 Relay PICKUPLED3 >Buchh. Trip 392 >Tripp. stage from Buchholz protec-
tionLED4 no default setting - -LED5 no default setting - -LED6 no default setting - -LED7 no default setting - -LED8 no default setting - -LED9 no default setting - -LED10 no default setting - -LED11 no default setting - -LED12 no default setting - -LED13 Error Sum Alarm 140 Error with a summary alarm
Alarm Sum Event 160 Alarm Summary EventLED14 FaultConfig/Set 311 Fault in configuration / setting
Binary Input Allocated Func-tion
Function No. Description
BI1 >Reset LED 5 >Reset LEDBI2 >Buchh. Trip 392 >Tripp. stage from Buchholz protec-
tion
Binary Output Allocated Func-tion
Function No. Description
BO1 Relay TRIP 511 Relay GENERAL TRIP commandBO2 Relay PICKUP 501 Relay PICKUPBO3 >Buchh. Trip 392 >Tripp. stage from Buchholz protec-
tionBO4 Error Sum Alarm 140 Error with a summary alarm
Alarm Sum Event 160 Alarm Summary Event
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544 7UT613/63x ManualC53000-G1176-C160-2
A.5.4 Function Keys
Table A-4 Applies to all devices and ordered variants
Function Keys Allocated Func-tion
Function No. Description
F1 Display of opera-tional instructions
- -
F2 Display of primary operational mea-sured values
- -
F3 An overview of the last 8 network faults
- -
F4 >QuitG-TRP >Quitt Lock Out: General TripResetting the reclo-sure interlocking
- -
A.5 Default Settings
5457UT613/63x ManualC53000-G1176-C160-2
A.5.5 Default Display
For devices with a four-line display, you can scroll among the basic displays shown below. The numerical values shown are examples. The device will display only those values that make sense for the current application. For instance, voltages will only be shown if the device is provided with voltage inputs and these inputs have been config-ured; with single-phase transformers there will be no phase L2.
Figure A-31 Default display for 4-line display*) depending on the phase connected (address 396 PHASE SELECTION)
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546 7UT613/63x ManualC53000-G1176-C160-2
For devices with a graphic display, the basic displays shown below may appear: The device will display only those values that make sense for the current application. For instance, voltages and powers will only be shown if the device is provided with voltage inputs and these inputs have been configured; with single-phase transformers there will be no phase L2.
Figure A-32 Basic graphic displays*) depending on the phase connected (address 396 PHASE SELECTION)
A.5 Default Settings
5477UT613/63x ManualC53000-G1176-C160-2
A.5.6 Pre-defined CFC Charts
On delivery of the SIPROTEC 4 device provides worksheets with preset CFC-charts.
Figure A-33 CFC Charts for Transmission Block and Reclosure Interlocking
The first chart converts the binary input „>DataStop“ from a single-point indication (SP) into an internal single-point indication (IM).
The second chart implements a reclosure interlocking feature which prevents a reclo-sure of the circuit breaker following a device trip until the trip has been acknowledged manually.
Note
„G-TRP QUITTIE“ must be allocated in addition to a trip relay!
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548 7UT613/63x ManualC53000-G1176-C160-2
A.6 Protocol-dependent Functions
Protocol → IEC60870-5-103
IEC 61850 Eth-ernet (EN100)
PROFIBUS FMS
PROFIBUS DP
DNP3.0 Modbus ASCII/RTU
Additional Service inter-face (optional)
Function ↓
Operational Measured values
Yes (fixed values)
Yes Yes Yes Yes Yes Yes
Metered Values Yes Yes Yes Yes Yes Yes YesFault Recording Yes Yes Yes No.
Only via additional service inter-face
No. Only via additional service inter-face
No. Only via additional service inter-face
Yes
Remote relay setting
No. Only via additional in-terface
No. Only via additional inter-face
Yes No. Only via additional service inter-face
No. Only via additional service inter-face
No. Only via additional service inter-face
Yes
User-defined annunciations and switching objects
Yes Yes Yes User-defined annuncia-tions in CFC
User-defined annuncia-tions in CFC
User-defined annuncia-tions in CFC
Yes
Time synchroni-sation
Via protocol; DCF77/IRIG B; Interface; Binary input
Via protocol (NTP); DCF77/IRIG B; Interface; Binary input
Via protocol; DCF77/IRIG B; inter-face;binary input
Via protocol; DCF77/IRIG B;Interface; Binary input
Via protocol; DCF77/IRIG B; Interface; Binary input
Via DCF77/IRIG B;Interface; Binary input
-
Annunciations with time stamp
Yes Yes Yes Yes Yes No Yes
Commissioning toolsIndication mea-sured value blocking
Yes Yes Yes No No No Yes
Generation of test annuncia-tions (DIGSI)
Yes Yes Yes No No No Yes
Physical propertiesMode Asynchro-
nousSynchronous Asynchro-
nousAsynchro-nous
Asynchro-nous
Asynchro-nous
-
Transmission mode
Cycli-cal/event
Cyclical/event Cycli-cal/event
Cyclical Cycli-cal/event
Cyclical -
Baud rate 4800 to 38400
up to 100 Mbaud up to 1.5 Mbaud
up to 1.5 Mbaud
2400 to 19200
2400 to 19200
2400 to 38400
Connection to device
Electrical: RS232RS485 opti-cal: ST con-nector
Ethernet TP Electrical: RS485 opti-cal: ST con-nector (single or double ring)
Electrical: RS485 opti-cal: ST con-nector (double ring)
Electrical: RS485 opti-cal: ST con-nector
Electrical: RS485 opti-cal: ST con-nector
Electrical: RS232RS485 opti-cal. ST con-nector
RTD-box 7XV5662-xAD Yes
A.7 Functional Scope
5497UT613/63x ManualC53000-G1176-C160-2
A.7 Functional Scope
Addr. Parameter Setting Options Default Setting Comments103 Grp Chge OPTION Disabled
EnabledDisabled Setting Group Change Option
105 PROT. OBJECT 3 phase transf.1 phase transf.Autotransf.Autotr. nodeGenerator/Motor3ph Busbar1ph Busbar
3 phase transf. Protection Object
112 DIFF. PROT. DisabledEnabled
Enabled Differential Protection
113 REF PROT. DisabledEnabled
Disabled Restricted earth fault protection
114 REF PROT. 2 DisabledEnabled
Disabled Restricted earth fault protection 2
117 COLDLOAD PICKUP DisabledEnabled
Disabled Cold Load Pickup
120 DMT/IDMT Phase DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT Phase
122 DMT/IDMT 3I0 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT 3I0
124 DMT/IDMT Earth DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT Earth
127 DMT 1PHASE DisabledEnabled
Disabled DMT 1Phase
130 DMT/IDMT Phase2 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT Phase 2
132 DMT/IDMT Phase3 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT Phase 3
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550 7UT613/63x ManualC53000-G1176-C160-2
134 DMT/IDMT 3I0 2 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT 3I0 2
136 DMT/IDMT 3I0 3 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT 3I0 3
138 DMT/IDMT Earth2 DisabledDefinite TimeTOC IECTOC ANSIUser Defined PUUser def. Reset
Disabled DMT / IDMT Earth 2
140 UNBALANCE LOAD DisabledDefinite TimeTOC IECTOC ANSIDT/thermal
Disabled Unbalance Load (Negative Se-quence)
142 THERM. OVERLOAD Disabledth rep w.o. senth repl w. sensIEC354
Disabled Thermal Overload Protection
143 OVEREXC. PROT. DisabledEnabled
Disabled Overexcitation Protection (U/f)
144 THERM.OVERLOAD2 Disabledth rep w.o. senth repl w. sensIEC354
Disabled Thermal Overload Protection 2
150 REVERSE POWER DisabledEnabled
Disabled Reverse Power Protection
151 FORWARD POWER DisabledEnabled
Disabled Forward Power Supervision
152 UNDERVOLTAGE DisabledEnabled
Disabled Undervoltage Protection
153 OVERVOLTAGE DisabledEnabled
Disabled Overvoltage Protection
156 FREQUENCY Prot. DisabledEnabled
Disabled Over / Underfrequency Protection
170 BREAKER FAILURE DisabledEnabled
Disabled Breaker Failure Protection
171 BREAKER FAIL. 2 DisabledEnabled
Disabled Breaker Failure Protection 2
180 DISCON.MEAS.LOC DisabledEnabled
Disabled Disconnect measurment location
181 M.V. SUPERV DisabledEnabled
Enabled Measured Values Supervision
182 Trip Cir. Sup. Disabled2 Binary Inputs1 Binary Input
Disabled Trip Circuit Supervision
Addr. Parameter Setting Options Default Setting Comments
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