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Functions

2.7 Motor Protection (Motor Starting Protection 48, Motor Restart Inhibit 66, Load Jam Protection)

SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012

137

Emergency Start

If, for emergency reasons, motor starting that will exceed the maximum allowable rotor temperature must take
place, the motor restart inhibit signal can be removed via a binary input (

„>66 emer.start“

), thus allowing

a new starting attempt. The thermal rotor profile, however, continues to function and the maximum allowable
rotor temperature will be exceeded. No motor shutdown will be initiated by the motor restart inhibit, but the cal-
culated excessive temperature of the rotor can be observed for risk assessment.

Blocking

If the motor restart inhibit function is blocked via binary input

„>BLOCK 66“

or switched off, the thermal replica

of the rotor overtemperature, the equilibrium time

T Equal

and the minimum inhibit time

T MIN. INHIBIT

are reset. Thus any blocking signal that is present or upcoming is disregarded.

Via another binary input (

„>66 RM th.repl.“

) the thermal replica can be reset independently. This may be

useful for testing and commissioning, and after a power supply voltage failure.

Logic

There is no pickup annunciation for the restart inhibit and no trip log is produced. The following figure shows
the logic diagram for the restart inhibit.

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Summary of Contents for SIPROTEC 7SK80

Page 1: ...SIPROTEC Motor Protection 7SK80 V4 7 Manual E50417 G1140 C344 A5 Preface Contents Introduction 1 Functions 2 Mounting and Commissioning 3 Technical Data 4 Appendix A Literature Glossary Index ...

Page 2: ... editions We appreciate any suggested improvements We reserve the right to make technical improvements without notice Document version V04 10 01 Release date 11 2012 Copyright Copyright Siemens AG 2012 All rights reserved Dissemination or reproduction of this document or evaluation and communication of its contents is not authorized except where ex pressly permitted Violations are liable for damag...

Page 3: ...e equipment automatic and control facilities and personnel of electrical facilities and power plants Applicability of this Manual This manual is valid for SIPROTEC 4 Multifunctional Protection Device with Motor Protection 7SK80 Firmware Version V4 7 Indication of Conformity This product complies with the directive of the Council of the European Communities on the approximation of the laws of the M...

Page 4: ...ax 49 911 433 5482 Internet www siemens com energy power academy e mail td power academy energy siemens com Safety Information This manual does not constitute a complete index of all required safety measures for operation of the equip ment module device as special operational conditions may require additional measures However it com prises important information that should be noted for purposes of...

Page 5: ...th the safety standards Use as prescribed The operational equipment device module may only be used for such applications as set out in the catalog and the technical description and only in combination with third party equipment recommended or approved by Siemens The successful and safe operation of the device is dependent on proper handling storage installation opera tion and maintenance When oper...

Page 6: ...appear word for word in the display of the device or on the screen of a personal computer with operation software DIGSI are additionally written in italics This also applies to header bars for selection menus Messages Designators for information which may be output by the relay or required from other devices or from the switch gear are marked in a monospace type style in quotation marks Deviations...

Page 7: ...ts are active or inactive at the same time Dynamic input signals edge triggered above with positive below with negative edge Formation of one analog output signal from a number of analog input signals Threshold element with setting address and parameter names Timer pickup delay T adjustable with setting address and parameter names Timer dropout delay T not adjustable Edge triggered time element wi...

Page 8: ...Preface SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 8 ...

Page 9: ... List 37 2 1 3 Power System Data 1 39 2 1 3 1 Description 39 2 1 3 2 Setting Notes 39 2 1 3 3 Settings 49 2 1 3 4 Information List 52 2 1 4 Oscillographic Fault Records 52 2 1 4 1 Description 52 2 1 4 2 Setting Notes 53 2 1 4 3 Settings 54 2 1 4 4 Information List 54 2 1 5 Settings Groups 54 2 1 5 1 Description 54 2 1 5 2 Setting Notes 55 2 1 5 3 Settings 55 2 1 5 4 Information List 55 2 1 6 Power...

Page 10: ... 3 1 General 87 2 3 2 Directional Definite Time High Current Elements 67N 2 67N 3 88 2 3 3 Definite Time Directional Overcurrent Element 67N 1 90 2 3 4 Inverse Time Directional Overcurrent Element 67N TOC 92 2 3 5 Interaction with Fuse Failure Monitor FFM 93 2 3 6 Dynamic Cold Load Pickup 94 2 3 7 Inrush Restraint 94 2 3 8 Determination of Direction 94 2 3 9 Setting Notes 96 2 3 10 Settings 100 2 ...

Page 11: ...otes 158 2 9 3 Settings 162 2 9 4 Information List 163 2 10 Monitoring Functions 164 2 10 1 Measurement Supervision 164 2 10 1 1 General 164 2 10 1 2 Hardware Monitoring 164 2 10 1 3 Software Monitoring 167 2 10 1 4 Monitoring of the Transformer Circuits 167 2 10 1 5 Measuring Voltage Failure Detection 169 2 10 1 6 Broken Wire Monitoring of Voltage Transformer Circuits 173 2 10 1 7 Setting Notes 1...

Page 12: ...5 Flexible Protection Functions 224 2 15 1 Description 224 2 15 2 Setting Notes 229 2 15 3 Settings 234 2 15 4 Information List 236 2 16 Reverse Power Protection Application with Flexible Protection Function 237 2 16 1 Description 237 2 16 2 Implementation of the Reverse Power Protection 240 2 16 3 Configuring the Reverse Power Protection in DIGSI 242 2 17 Temperature Detection via RTD Box 245 2 1...

Page 13: ... 20 4 3 Settings 278 2 20 4 4 Information List 278 2 20 5 Min Max Measurement Setup 278 2 20 5 1 Description 278 2 20 5 2 Setting Notes 279 2 20 5 3 Settings 279 2 20 5 4 Information List 279 2 20 6 Set Points for Measured Values 281 2 20 6 1 Setting Notes 281 2 20 7 Set Points for Statistic 282 2 20 7 1 Description 282 2 20 7 2 Setting Notes 282 2 20 7 3 Information List 282 2 20 8 Energy Meterin...

Page 14: ...tions 321 3 2 1 Checking the Data Connections of the Interfaces 321 3 2 2 Checking the System Connections 325 3 3 Commissioning 327 3 3 1 Test Mode and Transmission Block 328 3 3 2 Testing the System Interface at Port B 328 3 3 3 Configuring Communication Modules 330 3 3 4 Checking the Status of Binary Inputs and Outputs 333 3 3 5 Tests for Breaker Failure Protection 335 3 3 6 Testing User Defined...

Page 15: ...haracteristic 378 4 9 Negative Sequence Protection inverse time characteristics 379 4 10 Motor Starting Time Supervision 385 4 11 Motor Restart Inhibit 386 4 12 Load Jam Protection 387 4 13 Frequency Protection 388 4 14 Thermal Overload Protection 389 4 15 Ground Fault Detection Sensitive Insensitive 391 4 16 Intermittent Ground Fault Protection 395 4 17 Directional intermittent ground fault prote...

Page 16: ...A 4 1 Accuracy limiting factors 442 Effective and Rated Accuracy Limiting Factor 442 Calculation example according to IEC 60044 1 442 A 4 2 Class conversion 443 A 4 3 Cable core balance current transformer 443 General 443 Requirements 443 Class accuracy 444 A 5 Default Settings 445 A 5 1 LEDs 445 A 5 2 Binary Input 446 A 5 3 Binary Output 447 A 5 4 Function Keys 447 A 5 5 Default Display 448 A 6 P...

Page 17: ...344 A5 Release date 11 2012 17 Introduction 1 This chapter introduces the SIPROTEC 4 7SK80 and gives an overview of the device s application properties and functions 1 1 Overall Operation 18 1 2 Application Scope 21 1 3 Characteristics 23 ...

Page 18: ... The device provides 4 current transformers and depending on the model additionally 3 voltage transformers Three current inputs serve for the input of the phase currents another current input IN may be used for measuring the ground fault current IN current transformer neutral point or for a separate ground current transformer for sensitive ground fault detection INs and directional determination o...

Page 19: ...ystem obtains information from the system e g remote resetting or from external equipment e g blocking commands These outputs include in particular trip commands to circuit breakers and signals for the remote indication of important events and conditions Front Elements Information such as messages related to events states measured values and the functional status of the device are visualized by li...

Page 20: ...y unit Vaux or PS delivers power to the functional units using the different voltage levels Voltage dips may occur if the voltage supply system substation battery becomes short circuited Usually they are bridged by a capacitor see also Technical Data A buffer battery is located under the flap at the lower end of the front cover ...

Page 21: ...ce protection overload protection circuit breaker failure protection and ground fault protection Depending on the ordered variant further protection functions are included such as frequency protection ov ervoltage and undervoltage protection and ground fault protection for high resistance ground faults directional or non directional External detectors can measure ambient temperatures or coolant te...

Page 22: ...uration parameters and settings configuring user specific logic functions retrieving operational messages and measured values inquiring device conditions and mea sured values issuing control commands Depending on the ordered variant additional interfaces are located at the bottom of the device They serve for establishing extensive communication with other digital operating control and memory compo...

Page 23: ...ntroller equipment via serial interfaces through the choice of data cable modem or optical fibers Battery buffered clock which can be synchronized via a synchronization signal at the binary input or via a protocol Switching statistics Counting the number of trip commands initiated by the device logging the currents of the last switch off operation initiated by the device and accumulating the elimi...

Page 24: ...current protection settings e g when cold load conditions are recognized Detection of cold load condition via circuit breaker position or current threshold Activation also possible via binary input Voltage Protection 27 59 Two element undervoltage detection via the positive sequence system of the voltages phase to phase or phase to ground voltages Choice of current supervision for 27 1 and 27 2 Se...

Page 25: ...asurement circuits as well as the hardware and soft ware Fuse failure monitor with protection function blocking Monitoring of the current transformer and voltage transformer secondary circuits using sum and symmetry supervision with optional protection function blocking Trip circuit monitoring possible Phase rotation check Ground Fault Detection 50N s 51N s 67N s 59N 64 Displacement voltage is mea...

Page 26: ...e phase or single phase operation Any calculated or directly measured quantity can be evaluated on principle Standard protection logic with a constant i e definite time characteristic curve Internal and configurable pickup and dropout delay Modifiable message texts RTD box temperature detection Detection of any ambient temperatures or coolant temperatures using external RTD boxes or internal tem p...

Page 27: ...nterrogations Processing of measured values including zero suppression adding a knee curve for a transducer input and live zero monitoring Breaker Control Switching devices can be opened and closed manually using control keys programmable function keys via port B e g of SICAM or LSA or via the user interface using a personal computer and the DIGSI operating software Feedback of switching states vi...

Page 28: ...Introduction 1 3 Characteristics SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 28 ...

Page 29: ...c Cold Load Pickup 103 2 5 Voltage Protection 27 59 109 2 6 Negative Sequence Protection 46 120 2 7 Motor Protection Motor Starting Protection 48 Motor Restart Inhibit 66 Load Jam Protection 128 2 8 Frequency Protection 81 O U 150 2 9 Thermal Overload Protection 49 154 2 10 Monitoring Functions 164 2 11 Ground Fault Protection 64 67N s 50N s 51N s 185 2 12 Intermittent Ground Fault Protection 207 ...

Page 30: ...0 There are no indications and the corre sponding settings functions limit values are not relevant during configuration Note Available functions and default settings are depending on the ordering code of the relay see A 1 for details 2 1 1 2 Setting Notes Setting the Functional Scope Your protection device is configured using the DIGSI software Connect your personal computer either to the USB port...

Page 31: ... use You can select between Definite Time TOC ANSI or TOC IEC If this function is not required select Disabled For overload protection you can determine at address 142 49 whether the function operates with or without ambient temperature With amb temp or No ambient temp or whether the entire function is Disabled In address 170 you can set the breaker failure protection to Enabled or Disabled The se...

Page 32: ...of a function is removed all settings and configurations made previously will be lost After re selecting the function all settings and configurations are in default setting Setting of the flexible func tion is done in DIGSI under Settings Additional Functions and Settings The configuration is done as usual under Settings and Masking I O Configuration Matrix 2 1 1 3 Settings Addr Parameter Setting ...

Page 33: ...bled 27 59 Under Overvoltage Protec tion 154 81 O U Disabled Enabled Disabled 81 Over Underfrequency Protec tion 170 50BF Disabled Enabled enabled w 3I0 Disabled 50BF Breaker Failure Protection 172 52 B WEAR MONIT Disabled Ix Method 2P Method I2t Method Disabled 52 Breaker Wear Monitoring 182 74 Trip Ct Supv Disabled 2 Binary Inputs 1 Binary Input Disabled 74TC Trip Circuit Supervision 190 RTD INP...

Page 34: ...ault was cleared by another device e g on another line These messages are then limited to faults in the line to be protected The following figure illustrates the generation of the reset command for stored indications The instant the device drops out the presetting of parameter 610 FltDisp LED LCD decides whether the new fault remains stored or is reset 617 ServiProt CM Disabled T103 DIGSI RTD RS48...

Page 35: ...or not a spontaneous fault message should appear automatically on the display YES or not NO Selection of Default Display The start page of the default display appearing after startup of the device can be selected in the device data via parameter 640 Start image DD The pages available for each device version are listed in the Appendix A 5 Time Synchronization via Port A If you want the time synchro...

Page 36: ...1 Spont FltDisp YES NO NO Spontaneous display of flt annun ciations 640 Start image DD image 1 image 2 image 3 image 4 image 5 image 6 image 1 Start image Default Display 651 ParEN100 LC blk OFF ON OFF DIGSI config over EN100 LC blocked 660 IP adr 0 Prim 0 255 0 IP address 0 NTP Primary 661 IP adr 1 Prim 0 255 0 IP address 1 NTP Primary 662 IP adr 2 Prim 0 255 0 IP address 2 NTP Primary 663 IP adr...

Page 37: ...ight on SP Back Light on Reset LED IntSP Reset LED DataStop IntSP Stop data transmission Test mode IntSP Test mode Feeder gnd IntSP Feeder GROUNDED Brk OPENED IntSP Breaker OPENED HWTestMod IntSP Hardware Test Mode SynchClock IntSP_Ev Clock Synchronization Distur CFC OUT Disturbance CFC 1 Not configured SP No Function configured 2 Non Existent SP Function Not Available 3 Time Synch SP_Ev Synchroni...

Page 38: ...OUT Error Neutral CT different from MLFB 232 CT ph mismatch OUT LPCT phase Current Transf mismatching 233 CT gnd mismatch OUT LPCT ground Current Transf mismatching 301 Pow Sys Flt OUT Power System fault 302 Fault Event OUT Fault Event 303 sens Gnd flt OUT sensitive Ground fault 320 Warn Mem Data OUT Warn Limit of Memory Data exceeded 321 Warn Mem Para OUT Warn Limit of Memory Parameter exceeded 3...

Page 39: ...red according to these tabs Nominal Frequency Power System The nominal frequency of the system is set under the Address 214 Rated Frequency The factory pre setting in accordance with the model need only be changed if the device will be employed for a purpose other than that which was planned when ordering In the US device versions ordering data position 10 C parameter 214 is preset to 60 Hz Phase ...

Page 40: ... for Σi is set to YES In all other cases even if the ground current of the own line is measured via a separate ground current transformer enter the setting NO This setting exclusively affects the function Current Sum Monitoring see Section 2 10 1 Current Connection Power System Data Via parameter 251 CT Connect a special connection of the current transformers can be determined The standard connect...

Page 41: ...tings only differ in the calculation of IB In the case of A G2 C G G B the phase current IB is determined from the phase currents IA and IC and from the measured ground current IN or INS at the fourth current input In the case of A G2 C G G2 B the phase current IB is determined from the phase currents IA and IC and from the measured ground current IN2 at the second current input This setting is on...

Page 42: ...e phase to ground voltages are measured VT Connect 3ph Vab Vbc VGnd means that two phase to phase voltages open delta connection and the displacement voltage Vgnd are connected VT Connect 3ph Vab Vbc means that two phase to phase voltages open delta connection are con nected The third voltage transformer of the device is not used VT Connect 3ph Vab Vbc Vx means that two phase to phase voltages ope...

Page 43: ...oltage measurement in the Device Configuration at address 192 Cap Volt Meas the voltage will be measured via so called bushing capacitances The usual primary voltage transformers are not relevant in this case Capacitive voltage measurement always measures the phase to Ground voltages from the protection device The following figure shows this type of connection Figure 2 4 Connection for a capacitiv...

Page 44: ...ltage Vsecondary x for phase x can be deter mined using the following formula with Vprim x Primary voltage of phase x Vsec x Voltage at the voltage input of the protection device CD Lx Value of the bushing capacitance for phase x CS Lx Value of the line and stray capacitance for phase x exec System frequency 50 Hz or 60 Hz The following figure represents the above equation graphically The frequenc...

Page 45: ... and 10036 Capac Par Fail after startup Note Used bushing capacities have to be available exclusively to the connected 7Sx80 Connecting a parallel port e g on a capacitive voltage measuring device at the same bushing capacities is not allowed Internal Normalization of the Measured Voltages The capacitance values for the three voltage inputs will usually not be absolutely identical From this we can...

Page 46: ...value must be corrected by 4 per degree angle error actual angle less desired angle If the angle error is positive the configured value has to be reduced accordingly if the angle error is negative it has to be increased accordingly The prerequisite for the phase angle between phase to Ground voltage and phase current to be displayed is that the current amounts to at least 10 of the nominal value T...

Page 47: ... address 204 Nominal Values of Voltage Transformers VTs At addresses 202 Vnom PRIMARY and 203 Vnom SECONDARY information is entered regarding the primary nominal voltage and secondary nominal voltage phase to phase of the connected voltage transformers Transformation Ratio of Voltage Transformers VTs Address 206 Vph Vdelta informs the device of the adjustment factor between the phase voltage and t...

Page 48: ...ing notes of this function see Section 2 20 2 Pickup Thresholds of the Binary Inputs Thresholds BI At address 220 Threshold BI 1 to 226 Threshold BI 7 you can set the pickup thresholds of the binary inputs of the device The settings Thresh BI 176V Thresh BI 88V or Thresh BI 19V are possible Two phase Time Overcurrent Protection Protection Operating Quantities The two phase time overcurrent protect...

Page 49: ...rent transformer Addr Parameter C Setting Options Default Setting Comments 201 CT Starpoint towards Line towards Busbar towards Line CT Starpoint 202 Vnom PRIMARY 0 10 800 00 kV 20 00 kV Rated Primary Voltage 203 Vnom SECONDARY 34 225 V 100 V Rated Secondary Voltage L L 204 CT PRIMARY 10 50000 A 400 A CT Rated Primary Current 205 CT SECONDARY 1A 5A 1A CT Rated Secondary Current 206A Vph Vdelta 1 0...

Page 50: ...ly 238 Ignd2 CT PRIM 1 50000 A 400 A Ignd2 CT rated primary c conn to I2 239 Ignd2 CT SEC 1A 5A 1A Ignd2 CT rated secondary current I2 241 Volt trans A C1 1 0 100 0 pF 10 0 pF Voltage transducer A Ca pacity C1 242 Volt trans A C2 250 10000 pF 2200 pF Voltage transducer A Ca pacity C2 243 Volt trans B C1 1 0 100 0 pF 10 0 pF Voltage transducer B Ca pacity C1 244 Volt trans B C2 250 10000 pF 2200 pF...

Page 51: ... LPCT 312 Ignd PRIM ref 1 50000 A 60 A Primary refer ground current for prot 313 Ignd LPCT PRIM 0 01 5000 00 A 2 00 A Rated primary ground current LPCT 314 Vph LPCT SEC 10 0 1000 0 mV 225 0 mV Rated secondary phase voltage LPCT 315 Vgnd LPCT SEC 10 0 1000 0 mV 225 0 mV Rated secondary ground voltage LPCT 320A Corr factor IL1 0 9000 1 1000 1 0000 Correction factor for mag nitude IL1 321A Corr facto...

Page 52: ...resents the data recorded during the fault event and also calculates additional information from the measured values Currents and voltages can be presented either as primary or as secondary values Signals are additionally recorded as binary tracks marks e g pickup trip If port B of the device has been configured correspondingly the fault record data can be imported by a central controller via this...

Page 53: ...saving may be both the device pickup Save w Pickup or the device trip Save w TRIP A trip command issued by the device can also be used as trigger instant Start w TRIP in this case it is also the saving criterion A fault event starts with the pickup by any protection function and ends with the dropout of the last pickup of a protection function The actual storage time begins at the pre fault time P...

Page 54: ...cted as Enabled during con figuration see Section 2 1 1 2 In 7SK80 relays four independent setting groups A to D are available While setting values may vary the selected functions of each setting group remain the same Addr Parameter Setting Options Default Setting Comments 401 WAVEFORMTRIGGE R Save w Pickup Save w TRIP Start w TRIP Save w Pickup Waveform Capture 403 MAX LENGTH 0 30 5 00 sec 2 00 s...

Page 55: ...nformation on how to copy setting groups or reset them to their status at delivery and also how to change from one setting group to another Subsection 3 1 of this manual tells you how to change between several setting groups externally via binary inputs 2 1 5 3 Settings 2 1 5 4 Information List Addr Parameter Setting Options Default Setting Comments 302 CHANGE Group A Group B Group C Group D Binar...

Page 56: ... is exceeded this will be interpreted as motor starting This parameter is used by the start up time monitoring and overload protection functions For this setting the following should be considered A setting must be selected that is lower than the actual motor start up current under all load and voltage conditions During motor start up the thermal replica of the overload protection is frozen i e ke...

Page 57: ... A 1108 P Q sign not reversed reversed not reversed P Q operational measured values sign No Information Type of In formation Comments 126 ProtON OFF IntSP Protection ON OFF via system port 356 Manual Close SP Manual close signal 501 Relay PICKUP OUT Relay PICKUP 511 Relay TRIP OUT Relay GENERAL TRIP command 533 Ia VI Primary fault current Ia 534 Ib VI Primary fault current Ib 535 Ic VI Primary fau...

Page 58: ...nvi ronments SIPROTEC 4 relays therefore provide for open and interoperable operation Parallel to the process control integration of the device this interface can also be used for communication with DIGSI and for inter relay communication via GOOSE 2 1 7 2 Setting Notes IEC 61850 GOOSE Function The GOOSE function can be disabled via a device parameter For more information please refer to Section 2...

Page 59: ...of the current transformers Information on this can be found in Chapter 2 1 3 2 connection examples in the Appendix A 3 Devices featuring a sensitive ground current input however generally use the calculated quantity 3I0 The timer for each Element can be blocked via binary input thus suppressing the trip command If the blocking is cancelled during pickup the timer will be restarted The Manual Clos...

Page 60: ...0N T DROP OUT This time is started and maintains the pickup condition if the current falls below the threshold Therefore the function does not drop out at high speed The trip delay time 50 3 DELAY 50 2 DELAY or 50N 3 DELAY 50N 2 DELAY continues running in the meantime After the dropout delay time has elapsed the pickup is reported OFF and the trip delay time is reset unless the threshold 50 3 PICK...

Page 61: ...17 G1140 C344 A5 Release date 11 2012 61 Figure 2 6 Logic diagram for 50 2 for phases If parameter 1213 MANUAL CLOSE is set to 50 2 instant or 50 3 instant and manual close detection is used a pickup causes instantaneous tripping even if the Element is blocked via a binary input ...

Page 62: ... G1140 C344 A5 Release date 11 2012 62 Figure 2 7 Logic diagram of the 50N 2 element If parameter 1313 MANUAL CLOSE is set to 50N 2 instant or 50N 3 instant and manual close de tection is used a pickup causes instantaneous tripping even if the Element is blocked via a binary input ...

Page 63: ... by setting dropout times 1215 50 T DROP OUT or 1315 50N T DROP OUT This time is started and maintains the pickup condition if the current falls below the threshold Therefore the function does not drop out at high speed The trip command delay time 50 1 DELAY or 50N 1 DELAY continues running in the meantime After the dropout delay time has elapsed the pickup is reported OFF and the trip delay time ...

Page 64: ...nt for phases If parameter 1213 MANUAL CLOSE is set to 50 1 instant and manual close detection is used a pickup causes instantaneous tripping even if theElement is blocked via a binary input The dropout delay only operates if no inrush was detected An incoming inrush will reset a running dropout delay time Figure 2 9 Logic diagram of the dropout delay for 50 1 ...

Page 65: ...n is used a pickup causes instantaneous tripping even if the Element is blocked via a binary input The pickup values of each 50 1 50 2 Element for the phase currents and 50N 1 50N 2 Element for the ground current and the valid delay times for each element can be set individually The dropout delay only functions if no inrush was detected An incoming inrush will reset a running dropout time delay Fi...

Page 66: ...xceeds 1 1 times the setting value the corresponding Element picks up and is signaled individually If the inrush restraint function is used either the normal pickup signals or the corresponding inrush signals are issued as long as inrush current is detected If the 51 Element picks up the tripping time is calculated from the actual fault current flowing using an integrating method of measurement Th...

Page 67: ...gram of the 51 inverse time overcurrent element for phases If an ANSI Curve is configured parameter 1209 51 TIME DIAL is used instead of parameter 1208 51 TIME DIAL If parameter 1213 MANUAL CLOSE is set to 51 instant and manual close detection is used a pickup causes instantaneous tripping even if the Element is blocked via a binary input ...

Page 68: ...ement drops out when 95 of the pickup value is undershot For a new pickup the time delay starts at zero The disk emulation evokes a dropout process timer counter is decrementing which begins after de energiza tion This process corresponds to the reset of a Ferraris disk explaining its denomination disk emulation In case several faults occur in succession the history is taken into consideration due...

Page 69: ...age influence of the pickup value The 51 PICKUP value is decreased proportional to the voltage decrease Consequently for constant current I the I 51 PICKUP ratio is increased and the tripping time is reduced Compared with the standard curves rep resented in Section Technical Data the tripping curve shifts to the left side as the voltage decreases Switching to the lower pickup value or decreasing t...

Page 70: ...nctions 2 2 Overcurrent Protection 50 51 50N 51N SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 70 Figure 2 15 Logic diagram of the voltage controlled inverse time overcurrent protection ...

Page 71: ...unctions 2 2 Overcurrent Protection 50 51 50N 51N SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 71 Figure 2 16 Logic diagram of the voltage restraint inverse time overcurrent protection ...

Page 72: ...rents above a pickup value special inrush signals are generated These signals also initiate fault annunciations and start the associated trip delay time If inrush conditions are still present after the tripping time delay has elapsed a corresponding message Timeout is output but the overcurrent tripping is blocked see also logic diagrams of time overcurrent elements Figures 2 8 to 2 13 Inrush curr...

Page 73: ...omponent of the current is exceeded for only one phase Please take into consideration that inrush currents flowing in the ground path will not cross block tripping by the phase elements Cross blocking is reset if there is no more inrush in any phase Furthermore the cross blocking function may also be limited to a particular time interval address 2204 CROSS BLK TIMER After expiry of this time inter...

Page 74: ...Functions 2 2 Overcurrent Protection 50 51 50N 51N SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 74 Figure 2 17 Logic diagram for inrush restraint ...

Page 75: ...ndication Display Output indication FNo 50 3 A PU 50 2 A PU 50 1 A PU 51 A PU 2 6 2 8 2 12 50 51 Ph A PU 1762 50 3 B PU 50 2 BPU 50 1B PU 51 B PU 2 6 2 8 2 12 50 51 Ph B PU 1763 50 3 C PU 50 2 C PU 50 1 C PU 51 C PU 2 6 2 8 2 12 50 51 Ph C PU 1764 50N 3 PU 50N 2 PU 50N 1 PU 51N PU 2 7 2 10 2 13 50N 51NPickedup 1765 50 3 A PU 50 3 B PU 50 3 C PU 50 3 picked up 1767 50N 3 PU 50N 3 picked up 1768 50 ...

Page 76: ... will also be blocked 2 2 10 Fast Busbar Protection Using Reverse Interlocking Application Example Each of the current elements can be blocked via binary inputs A setting parameter determines whether the binary input operates in the normally open i e actuated when energized or the normally closed i e actuated when de energized mode This allows fast busbar protection to be applied in star systems o...

Page 77: ...characteristics The superimposed high set elements 50 2 50 3 or 50N 2 50N 3 are available in all these cases Parameter 250 50 51 2 ph prot can also be set to activate two phase overcurrent protection Under address 1201 FCT 50 51 overcurrent protection for phases and under address 1301 FCT 50N 51N the ground overcurrent protection can be switched ON or OFF Pickup values time delays and Curves for g...

Page 78: ...fective values or fundamental harmonics see Technical Data The type of the comparison values can be set under the following addresses 50 3 Element Address 1219 50 3 measurem 50 2 Element Address 1220 50 2 measurem 50 1 Element Address 1221 50 1 measurem 51 Element Address 1222 51 measurem 50N 3 Element Address 1319 50N 3 measurem 50N 2 Element Address 1320 50N 2 measurem 50N 1 Element Address 1321...

Page 79: ...otection Element 50 2 PICKUP is applied as a fast busbar protection with a shorter safety delay time 50 2 DELAY e g 100 ms For faults at the outgoing feeders element 50 2 is blocked The Elements 50 1 or 51 serve as backup protection The pickup values of both elements 50 1 PICKUP or 51 PICKUP and 50 2 PICKUP are set equal The delay time 50 1 DELAY or 51 TIME DIAL is set in such manner that it overg...

Page 80: ...asuring time dropout time The delay can also be set to In this case the Element will not trip after pickup However pickup will be signaled If the 50N 1 Element is not required at all the pickup threshold 50N 1 PICKUP should be set to This setting prevents tripping and the generation of a pickup message Pickup Stabilization Definite Time The configurable dropout times 1215 50 T DROP OUT or 1315 50N...

Page 81: ... an ticipated ground fault current The corresponding time multiplier for an IEC Curve is set at address 1308 51N TIME DIAL and at address 1309 51N TIME DIAL for an ANSI Curve This has to be coordinated with the grading coordination chart of the network For ground currents with grounded network you can often set up a separate grading coordination chart with shorter delay times The time multiplier c...

Page 82: ...that the Element selected for MANUAL CLOSE can become effective The alternative Inactive means that all elements operate as per configuration even with manual close and do not get special treatment Internal Control Function If the manual close signal is sent via the internal control function of the device an internal connection of infor mation has to be established via CFC interlocking task level ...

Page 83: ... Always Always 50 3 active 1217 50 3 PICKUP 1A 1 00 35 00 A A 50 3 Pickup 5A 5 00 175 00 A A 1218 50 3 DELAY 0 00 60 00 sec 0 00 sec 50 3 Time Delay 1219A 50 3 measurem Fundamental True RMS Instantaneous Fundamental 50 3 measurement of 1220A 50 2 measurem Fundamental True RMS Fundamental 50 2 measurement of 1221A 50 1 measurem Fundamental True RMS Fundamental 50 1 measurement of 1222A 51 measurem ...

Page 84: ... instant Manual Close Mode 1314A 50N 2 active Always Always 50N 2 active 1315A 50N T DROP OUT 0 00 60 00 sec 0 00 sec 50N Drop Out Time Delay 1316A 50N 3 active Always Always 50N 3 active 1317 50N 3 PICKUP 0 25 35 00 A A 50N 3 Pickup 1318 50N 3 DELAY 0 00 60 00 sec 0 05 sec 50N 3 Time Delay 1319A 50N 3 measurem Fundamental True RMS Instantaneous Fundamental 50N 3 measurement of 1320A 50N 2 measure...

Page 85: ...0 51 Ph A PU OUT 50 51 Phase A picked up 1763 50 51 Ph B PU OUT 50 51 Phase B picked up 1764 50 51 Ph C PU OUT 50 51 Phase C picked up 1765 50N 51NPickedup OUT 50N 51N picked up 1767 50 3 picked up OUT 50 3 picked up 1768 50N 3 picked up OUT 50N 3 picked up 1769 50 3 TRIP OUT 50 3 TRIP 1770 50N 3 TRIP OUT 50N 3 TRIP 1787 50 3 TimeOut OUT 50 3 TimeOut 1788 50N 3 TimeOut OUT 50N 3 TimeOut 1791 50 N ...

Page 86: ...UT 51N Disk emulation picked up 7551 50 1 InRushPU OUT 50 1 InRush picked up 7552 50N 1 InRushPU OUT 50N 1 InRush picked up 7553 51 InRushPU OUT 51 InRush picked up 7554 51N InRushPU OUT 51N InRush picked up 7556 InRush OFF OUT InRush OFF 7557 InRush BLK OUT InRush BLOCKED 7558 InRush Gnd Det OUT InRush Ground detected 7559 67 1 InRushPU OUT 67 1 InRush picked up 7560 67N 1 InRushPU OUT 67N 1 InRu...

Page 87: ...measurement however generally use the calculated quantity 3I0 The directional orientation Forward Reverse or Non Directional can be set individually for each element Non Directional from V4 7 on For each element the time can be blocked via binary input thus suppressing the trip command If the blocking is cancelled during pickup the timer will be restarted The Manual Close signal is an exception If...

Page 88: ...out instantaneously The trip command delay time 50N 2 DELAY or 67N 3 DELAY continues running in the meantime After the dropout delay time has elapsed the pickup is reported OFF and the trip delay time is reset unless the threshold 50N 2 PICKUP or 67N 3 PICKUP has been violated again If the threshold is exceeded again during the dropout delay time the time is canceled However the trip command delay...

Page 89: ...E50417 G1140 C344 A5 Release date 11 2012 89 Figure 2 20 Logic diagram of the directional element 67N 2 If parameter 1613 is set to 67N 2 instant or 67N 3 instant and manual close detection is present a pickup causes instantaneous tripping even if the element is blocked via binary input ...

Page 90: ...opout time 1618 67N T DROP OUT This time is started and maintains the pickup condition if the current falls below the threshold Therefore the function does not drop out at high speed Meanwhile the trip command delay time 50N 1 DELAY continues running After the dropout delay time has elapsed the pickup is reported OFF and the trip delay time is reset unless the threshold 50N 1 PICKUP has been excee...

Page 91: ...f the directional overcurrent element 67N 1 If parameter 1613 is set to 67N 1 instant and manual close detection applies the trip is initiated as soon as the pickup conditions arrive even if the element is blocked via a binary input The dropout delay only functions if no inrush was detected An incoming inrush will reset an already running dropout time delay ...

Page 92: ...is detected while the inrush restraint function is enabled there will be no trip but a message will be gen erated indicating that the timer has elapsed The pickup value of the 67N TOC element the delay time and the Curve can be selected individually The element can work directionally or non directionally Dropout Behaviour With an ANSI oe IEC curve it can be selected whether an element will drop ou...

Page 93: ...rcuit or phase failure in the voltage transformer secondary system or pickup of the voltage transformer mcb fuse In the event of a single phase or two phase failure of the measuring voltage it is possible to recognize this condition and block the di rectional overcurrent time protection elements ground see logic diagrams In such a case the undervoltage protection and the sensitive ground fault det...

Page 94: ...t and a reference voltage Method of Directional Measurement For the directional ground fault element there are two ways of direction determination Direction determination with zero sequence or ground quantities Direction determination with negative sequence quantities Direction Determination with Zero sequence or Ground Quantities For the directional ground fault elements the direction can be dete...

Page 95: ...n via Ground Element using Ground Values Figure 2 24 shows the treatment of the reference voltage for the directional ground element also based on a single phase ground fault in phase A The fault voltage serves as reference voltage Depending on the connec tion of the voltage transformer this is the voltage 3V0 as shown in Figure 2 24 or VN The fault current 3I0 is phase offset by 180 to the fault ...

Page 96: ...rot If the vector of the negative sequence current 3I2 is in this area the device detects forward direction 2 3 9 Setting Notes General When selecting the directional ground overcurrent protection in DIGSI a dialog box opens with several tabs for setting the associated parameters Depending on the functional scope specified during configuration of the pro tective functions in address 116 67N 67N TO...

Page 97: ...ristic i e the position of the ranges forward and reverse is set in address 1619 ROTATION ANGLE The short circuit angle is generally inductive in a range of 30 to 60 This means that the default setting of 45 for adjusting the reference voltage can usually be retained because it guarantees a safe direction result With the ground directional element the reference voltage is the short circuit voltage...

Page 98: ...f a pickup indication 67N 1 Directional overcurrent element The setting of the overcurrent element 1604 67N 1 PICKUP is mainly determined by the minimum anticipated ground fault current If the relay is used to protect transformers or motors with large inrush currents the inrush restraint feature of 7SK80 may be used for the 67N 1 PICKUP element for more information see margin heading Inrush Re str...

Page 99: ...unctions see Section 2 1 1 Inrush restraint When used at transformers where high inrush currents are expected the 7SK80 can activate an inrush restraint function for the directional overcurrent elements 67N 1 PICKUP 67N TOC PICKUP as well as for the non directional overcurrent elements The inrush restraint option is enabled or disabled in 2201 INRUSH REST in the settings option non directional tim...

Page 100: ...orward 67 1 Direction 1525 67 TOC Direct Forward Reverse Non Directional Forward 67 TOC Direction 1526 67 3 Direction Forward Reverse Non Directional Forward 67 3 Direction 1601 FCT 67N 67N TOC OFF ON OFF 67N 67N TOC Ground Time Overcurrent 1602 67N 2 PICKUP 1A 0 05 35 00 A 0 50 A 67N 2 Pickup 5A 0 25 175 00 A 2 50 A 1603 67N 2 DELAY 0 00 60 00 sec 0 10 sec 67N 2 Time Delay 1604 67N 1 PICKUP 1A 0 ...

Page 101: ... Voltage 1620A 67N 2 MEASUREM Fundamental True RMS Fundamental 67N 2 measurement of 1621A 67N 1 MEASUREM Fundamental True RMS Fundamental 67N 1 measurement of 1622A 67N TOC MEASUR Fundamental True RMS Fundamental 67N TOC measurement of 1623 67N 2 Direction Forward Reverse Non Directional Forward 67N 2 Direction 1624 67N 1 Direction Forward Reverse Non Directional Forward 67N 1 Direction 1625 67N T...

Page 102: ...56 67N OFF OUT 67N 67N TOC switched OFF 2657 67N BLOCKED OUT 67N 67N TOC is BLOCKED 2658 67N ACTIVE OUT 67N 67N TOC is ACTIVE 2659 67N 1 BLOCKED OUT 67N 1 is BLOCKED 2668 67N 2 BLOCKED OUT 67N 2 is BLOCKED 2677 67N TOC BLOCKED OUT 67N TOC is BLOCKED 2678 67 3 TRIP OUT 67 3 TRIP 2679 67N 2 TRIP OUT 67N 2 TRIP 2681 67N 1 picked up OUT 67N 1 picked up 2682 67N 1 Time Out OUT 67N 1 Time Out 2683 67N 1...

Page 103: ...dless of how parameter 1702 Start Condition is set the release for cold load pickup can always be given via binary input ACTIVATE CLP Figure 2 28 shows the logic diagram of the dynamic cold load pickup function If it is detected via the auxiliary contact or the current criterion that the system is de energized i e the circuit breaker is open the CB Open Time is started As soon as it has elapsed th...

Page 104: ... on going fault with dynamic cold load pickup functions enabled the timers of all overcurrent relay elements are stopped and may then be restarted based on their normal duration During power up of the protective relay with an open circuit breaker the time delay CB Open Time is started and is processed using the normal settings Therefore when the circuit breaker is closed the normal set tings are e...

Page 105: ...Functions 2 4 Dynamic Cold Load Pickup SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 105 Figure 2 28 Logic diagram of the dynamic cold load pickup function 50c 50Nc 51c 51Nc 67c 67Nc ...

Page 106: ...phase currents Address 1801 50c 2 PICKUP and 1802 50c 2 DELAY or 1808 50c 3 PICKUP and 1809 50c 3 DELAY define the dynamic parameters for the high current elements 1803 50c 1 PICKUP and 1804 50c 1 DELAY for the 50 overcurrent element 1805 51c PICKUP together with 1806 51c TIME DIAL for IEC curves or 1807 51c TIME DIAL or ANSI curves for the 51 overcurrent element Non directional Time Overcurrent P...

Page 107: ...04 50c 1 DELAY 0 00 60 00 sec 0 30 sec 50c 1 Time Delay 1805 51c PICKUP 1A 0 10 4 00 A 1 50 A 51c Pickup 5A 0 50 20 00 A 7 50 A 1806 51c TIME DIAL 0 05 3 20 sec 0 50 sec 51c Time dial 1807 51c TIME DIAL 0 50 15 00 5 00 51c Time dial 1808 50c 3 PICKUP 1A 1 00 35 00 A A 50c 3 Pickup 5A 5 00 175 00 A A 1809 50c 3 DELAY 0 00 60 00 sec 0 00 sec 50c 3 Time Delay 1901 50Nc 2 PICKUP 1A 0 05 35 00 A 7 00 A...

Page 108: ...00 A 5 00 A 2106 67Nc TOC T DIAL 0 05 3 20 sec 0 50 sec 67Nc TOC Time Dial 2107 67Nc TOC T DIAL 0 50 15 00 5 00 67Nc TOC Time Dial 2108 67Nc 3 PICKUP 0 25 35 00 A A 67Nc 3 Pickup 2109 67Nc 3 DELAY 0 00 60 00 sec 0 00 sec 67Nc 3 Time Delay No Information Type of In formation Comments 1730 BLOCK CLP SP BLOCK Cold Load Pickup 1731 BLK CLP stpTim SP BLOCK Cold Load Pickup stop timer 1732 ACTIVATE CLP ...

Page 109: ...g the configuration in address 213 VT Connect 3ph see 2 1 3 2 The following table indicates which voltages can be evaluated by the function The settings for this are made in the P System Data 1 see Section 2 1 3 2 Furthermore it is indicated to which value the threshold must be set All voltages are fundamental frequency values Table 2 7 Voltage protection selectable voltages Function Connection th...

Page 110: ...ed undervoltage protection for instance will remain picked up If pickup is to drop out the current can be used as an additional criterion for pickup of undervoltage protection current supervision CS Undervoltage pickup can only be maintained when the undervoltage criterion satisfied and a settable minimum current level BkrClosed I MIN are exceeded Here the largest of the three phase currents is us...

Page 111: ...less severe overvoltages the tripping is performed with a longer time delay When one of the adjustable settings is exceeded the 59 element picks up and trips after an adjust able time delay has elapsed The time delay is not dependent on the magnitude of the overvoltage The dropout ratio for the two overvoltage elements Vdropout value Vpickup value can be set The following figure shows the logic di...

Page 112: ... supervision CS described above is not necessary in this case After the voltage has dropped below the pickup setting tripping is initiated after time delay 27 1 DELAY After the fault has been cleared i e when the voltage increases above the dropout threshold the element will drop out and allow closing of the circuit breaker Figure 2 30 Typical fault profile for supply side connection of the voltag...

Page 113: ...rrent criterion is delayed for a short period of time If the voltage cri terion drops out during this time period about 60 ms the protection function does not pick up Therefore no fault record is created when voltage protection is activated in a healthy system It is important to understand however that if a low voltage condition exists on the load after the circuit breaker is closed unlike Figure ...

Page 114: ...rotection 27 59 SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 114 The following figure shows the logic diagram of the undervoltage protection function Figure 2 32 Logic diagram of the undervoltage protection ...

Page 115: ...mainly used to prevent high insulation damage to system components and users the threshold value 5002 5003 59 1 PICKUP lies generally between 110 and 115 of the nominal voltage and setting value 5005 5006 59 2 PICKUP at approximately 130 The time delays of the overvoltage elements are entered at addresses 5004 59 1 DELAY and 5007 59 2 DELAY and should be selected in such manner that they make allo...

Page 116: ...ly intended to protect induction ma chines from voltage dips and to prevent stability problems the pickup values will usually be between 60 and 85 of the nominal voltage The threshold value is multiplied as positive sequence voltage and set to 3 thus realizing the reference to the nominal voltage Undervoltage protection comprises two elements The pickup value of the lower threshold is set at addre...

Page 117: ... Element and the 27 2 Element can be supervised by the current flow monitoring setting If the CURRENT SUPERV is switched ON at address 5120 factory setting the release condition of the current cri terion must be fulfilled in addition to the corresponding undervoltage condition which means that a configured minimum current BkrClosed I MIN address 212 must be present to make sure that this protectiv...

Page 118: ...Delay 5015 59 1 PICKUP V2 2 150 V 30 V 59 1 Pickup V2 5016 59 2 PICKUP V2 2 150 V 50 V 59 2 Pickup V2 5017A 59 1 DOUT RATIO 0 90 0 99 0 95 59 1 Dropout Ratio 5018A 59 2 DOUT RATIO 0 90 0 99 0 95 59 2 Dropout Ratio 5019 59 1 PICKUP V1 20 150 V 110 V 59 1 Pickup V1 5020 59 2 PICKUP V1 20 150 V 120 V 59 2 Pickup V1 5101 FCT 27 OFF ON Alarm Only OFF 27 Undervoltage Protection 5102 27 1 PICKUP 10 210 V...

Page 119: ...OUT 27 Undervoltage protection is BLOCKED 6532 27 ACTIVE OUT 27 Undervoltage protection is ACTIVE 6533 27 1 picked up OUT 27 1 Undervoltage picked up 6534 27 1 PU CS OUT 27 1 Undervoltage PICKUP w curr superv 6537 27 2 picked up OUT 27 2 Undervoltage picked up 6538 27 2 PU CS OUT 27 2 Undervoltage PICKUP w curr superv 6539 27 1 TRIP OUT 27 1 Undervoltage TRIP 6540 27 2 TRIP OUT 27 2 Undervoltage T...

Page 120: ...tion with unbalanced supply voltage it is endangered by thermal overload Due to the small negative sequence reactance even small voltage asymmetries lead to negative sequence currents In addition this protection function may be used to detect interruptions short circuits and polarity problems with current transformers It is also useful in detecting single phase and two phase faults with fault curr...

Page 121: ...ves and associated formulas are given in the Technical Data When programming the inverse time Curve also definite time elements 46 2 PICKUP and 46 1 PICKUP are available see a fore going paragraph Pickup and Tripping The negative sequence current I2 is compared to the setting value 46 TOC PICKUP When the negative se quence current exceeds 1 1 times the setting value a pickup annunciation is genera...

Page 122: ... This ensures a proper simulation of the temperature rise of the protected object even for extremely fluctuating unbalanced load values Reset begins as soon as 90 of the setting value is reached in accordance with the dropout curve of the selected characteristic In the range between the dropout value 95 of the pickup value and 90 of the setting value the incrementing and dec rementing process is i...

Page 123: ...ip delay time is reset unless the threshold has been exceeded again If the threshold is exceeded again during the dropout delay time the time is canceled The trip command delay time continues running Should the threshold value be exceeded after its expiry the trip command is issued immediately If the threshold value is not exceeded at this time there will be no reaction If the threshold value is e...

Page 124: ...verse current is re ferred to the nominal machine current For the setting values at the protection device this information is con verted to the secondary inverse current The following applies with I2 perm prim permissible thermal inverse current of the motor INom Motor Nominal Motor Current ICT sec Secondary Nominal Current of the Current Transformer ICT prim Primary nominal current of the current...

Page 125: ...n ratio CTR the relationship between negative sequence currents and total fault current for phase to phase faults and phase to ground faults are valid for the transformer as long as the turns ratio CTR is taken into consideration Consider a transformer with the following data The following fault currents may be detected at the low side If 46 1 PICKUP on the high side of the devices is set to 0 1 t...

Page 126: ...curve which is most similar to the thermal unbalanced load curve provided by the manufacturer The tripping curves of the protective relay and the formulas on which they are based are given in the Technical Data It must be noted that a safety factor of about 1 1 has already been included between the pickup value and the setting value when an inverse time Curve is selected This means that a pickup w...

Page 127: ... 46 2 DELAY 0 00 60 00 sec 1 50 sec 46 2 Time Delay 4006 46 IEC CURVE Normal Inverse Very Inverse Extremely Inv Extremely Inv IEC Curve 4007 46 ANSI CURVE Extremely Inv Inverse Moderately Inv Very Inverse Extremely Inv ANSI Curve 4008 46 TOC PICKUP 1A 0 05 2 00 A 0 90 A 46 TOC Pickup 5A 0 25 10 00 A 4 50 A 4009 46 TOC TIMEDIAL 0 50 15 00 5 00 46 TOC Time Dial 4010 46 TOC TIMEDIAL 0 05 3 20 sec 0 5...

Page 128: ...ments or by blocked rotor conditions a trip signal will be initiated by the protective relay Motor starting is detected when a settable current threshold I MOTOR START is exceeded Calculation of the tripping time is then initiated It should be noted that this timer starts every time the motor is started This is therefore a normal operating condition that is neither indicated in the fault log nor c...

Page 129: ... p m monitor The motor startup condition is assumed when the current in any phase exceeds the current threshold I MOTOR START At this instant the timer LOCK ROTOR TIME is started The locked rotor delay time LOCK ROTOR TIME is linked to a binary input 48 Rot locked via an AND gate If the binary input is picked up after the set locked rotor time has expired immediate tripping will take place regardl...

Page 130: ... derived from the thermal storage of the restart inhibit see Section 2 7 2 Therefore this function must be en abled The condition for the switching is determined by the parameter 4106 TEMP COLD MOTOR If the motor temperature actually the rotor temperature exceeds the threshold value then a switching from cold motor to warm motor takes place see logic diagram 2 37 The threshold values can be derive...

Page 131: ...before reaching the thermal tripping characteristic valid for normal operation A current above the current threshold 1107 I MOTOR START is interpreted as motor startup Consequently this value must be chosen such that it is reliably attained by the actual starting current under any load or voltage conditions during motor startup but not during a permissible short time overload Example Motor with th...

Page 132: ...y reset during the delay time LOCK ROTOR TIME faster tripping will be available during motor starting under locked rotor conditions Threshold Values cold warm Motor Parameter 4106 TEMP COLD MOTOR determines the threshold value It is derived from the number of cold ncold and warm nwarm motor startups Unless specified otherwise three cold and two warm startups ncold 3 nwarm 2 will be sufficient Thes...

Page 133: ...r To avoid that multiple starting attempts provoke tripping a restart of the motor must be inhibited if it is apparent that the thermal limit of the rotor will be exceeded during this startup attempt Therefore the 7SK80 features the motor restart inhibit which outputs a blocking command until a new motor startup is permitted for the deactivated motor restarting limit The blocking signal must be co...

Page 134: ...n the rotor bars may severely differ during motor starting the different maximum temperatures in the the rotor are not pertinant for motor restart inhibit see Figure 2 38 It is much more impor tant to establish a thermal replica after a complete motor start that is appropriate for the protection of the motor s thermal condition Figure 2 38 shows as an example the heating processes during repeated ...

Page 135: ...ot permitted A certain time must have passed restarting time TRestart to ensure that the rotor has cooled off operational measured value 661 Equilibrium Time This thermal behavior is provided for in the protection as follows Each time the motor is shut down the timer starts address 4304 T Equal It takes into account the different thermal conditions of the motor parts at the moment of shutdown Duri...

Page 136: ...lative to the time constants for a running machine with the factor Kτ at STOP address 4308 The criterion for the motor stop is the undershooting of a set current threshold BkrClosed I MIN This understands that the motor idle current is greater than this threshold The pickup threshold BkrClosed I MIN affects also the thermal overload protective function see Section 2 9 While the motor is running th...

Page 137: ... initiated by the motor restart inhibit but the cal culated excessive temperature of the rotor can be observed for risk assessment Blocking If the motor restart inhibit function is blocked via binary input BLOCK 66 or switched off the thermal replica of the rotor overtemperature the equilibrium time T Equal and the minimum inhibit time T MIN INHIBIT are reset Thus any blocking signal that is prese...

Page 138: ...2 7 Motor Protection Motor Starting Protection 48 Motor Restart Inhibit 66 Load Jam Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 138 Figure 2 39 Logic diagram for the restart inhibit ...

Page 139: ...ing current ISTARTUP the nominal motor current IMOT NOM the maximum al lowable starting time T START MAX address 4303 the number of allowable starts from cold conditions ncold and the number of allowable starts from warm conditions nwarm The starting current is entered at address 4302 IStart IMOTnom expressed as a multiple of nominal motor current In contrast the nominal motor current is entered a...

Page 140: ...lue has been chosen that reflects the thermal replica T MIN INHIBIT 6 0 min The motor manufacturer s or the requirements also determine also the extension factor for the time constant during cool down especially with the motor stopped Where no other specifications are made the following settings are recommended Kτ at STOP 5 and Kτ at RUNNING 2 For a proper functioning it is also important that the...

Page 141: ...g limit 1 A normal startup brings the machine into a temperature range below the thermal restarting limit and the machine is stopped The stop launches the equilibrium time 4304 T Equal and generates the message 66 TRIP The equilibrium time expires and the message 66 TRIP is cleared During the time T Equal the thermal replica remains frozen see Figure 2 40 on the left 2 A normal startup brings the ...

Page 142: ...nd 4304 T Equal so that the time passing until the temperature falls below the tem perature limit is the decisive factor for clearing the message 66 TRIP The thermal replica remains fro zen while the equilibrium time expires see Figure 2 41 to the left 2 A startup brings the machine from load operation into a temperature range just above the thermal restarting limit and the machine is stopped The ...

Page 143: ...o the motor and powered equipment 2 7 3 1 Mode of Operation Principle of Operation Figure 2 42 illustrates a typical characteristic curve of an asynchronous cage motor Nominal current is flowing at normal load If the load is increased the current flow also increases and the speed decreases Above a certain load however the motor is no longer able to adjust the speed by increasing the torque The mot...

Page 144: ...ed during the motor startup phase as the startup currents usually move in a size similar to the occurring currents when a rotor is locked The algorithm verifies the motor standstill according to currents and if available the message 52 a As soon as a current increase is applied after detection of the motor standstill the load jam protection is tempo rarily blocked in order to avoid motor shutdown ...

Page 145: ...tripping element can be configured The threshold value of the tripping element 4402 Load Jam I is usually configured below motor startup at double motor ampere rating Warning element 4404 I Alarm is naturally set below the tripping element to approx 75 of the tripping element with a longer delay time parameter 4405 ALARM DELAY If the warning element is not required the pickup value can be set to i...

Page 146: ...ting 4406 T Start Blk In order to avoid malfunctioning the T Start Blk is set to the double startup time Motor Protection Example Figure 2 45 illustrates an example of a complete motor protection characteristic Such characteristic usually consists of different protection elements and each element is responsible for special motor malfunctions These are Thermal overload protection to avoid overheati...

Page 147: ...lay time can remain at the default setting of 1 s The warning threshold is set to 75 of the trip ping element 4404 I Alarm 0 95 A sec The tripping delay time can remain at the default setting of 2 s In order to block the function during motor startup the parameter 4406 T Start Blk is set to double startup time T Start Blk 2 8 5 s 17 s Nominal voltage VNom 6600 V Nominal current INom 126 A Long ter...

Page 148: ...t 5A 2 50 80 00 A 25 00 A 4103 STARTUP TIME 1 0 180 0 sec 10 0 sec Startup Time 4104 LOCK ROTOR TIME 0 5 180 0 sec 2 0 sec Permissible Locked Rotor Time 4105 STARTUP T WARM 0 5 180 0 sec 10 0 sec Startup Time for warm motor 4106 TEMP COLD MOTOR 0 80 25 Temperature limit for cold motor 4301 FCT 66 OFF ON OFF 66 Startup Counter for Motors 4302 IStart IMOTnom 1 10 10 00 4 90 I Start I Motor nominal 4...

Page 149: ...OUT 66 Motor Startup Counter TRIP 4828 66 RM th repl SP 66 Mot St Cnt Reset therm memory rotor 4829 66 RM th repl OUT 66 Mot St Cnt therm memory rotor reset 4834 Rot overl TRIP OUT Rotor thermal overload TRIP 4835 Rot overl alarm OUT Rotor thermal overload alarm 6801 BLOCK 48 SP BLOCK 48 Motor Startup Time Supervision 6805 48 Rot locked SP 48 14 Mot St Time Sup Rotor locked 6811 48 OFF OUT 48 Moto...

Page 150: ...ection The frequency is detected preferrably from the positive sequence voltage If this voltage is too low the phase to phase voltage VA B at the device is used If the amplitude of this voltage is too small one of the other phase to phase voltages is used instead Through the use of filters and repeated measurements the frequency evaluation is free from harmonic influ ences and very accurate Overfr...

Page 151: ...tective functions If the function is not required Disabled is set The function can be turned ON or OFF under address 5401 FCT 81 O U By setting the parameters 5421 to 5424 the function of each of the elements 81 1 PICKUP to 81 4 PICKUP is set individually as overfrequency or underfrequency protection or set to OFF if the element is not required Minimum voltage The minimum voltage below which the f...

Page 152: ...reason only a short term frequency reduction down to about 48 Hz for fN 50 Hz or 58 Hz for fN 60 Hz is permissible A frequency increase can for example occur due to a load shedding or malfunction of the speed regulation e g in an island network In this way the frequency increase protection can for example be used as over speed protection Dropout Thresholds The dropout threshold is defined via the ...

Page 153: ...ency Pro tection 5422 FCT 81 2 O U OFF ON f ON f OFF 81 2 Over Under Frequency Pro tection 5423 FCT 81 3 O U OFF ON f ON f OFF 81 3 Over Under Frequency Pro tection 5424 FCT 81 4 O U OFF ON f ON f OFF 81 4 Over Under Frequency Pro tection No Information Type of In formation Comments 5203 BLOCK 81O U SP BLOCK 81O U 5206 BLOCK 81 1 SP BLOCK 81 1 5207 BLOCK 81 2 SP BLOCK 81 2 5208 BLOCK 81 3 SP BLOCK...

Page 154: ...mal Replica The device calculates the overtemperature in accordance with a single body thermal replica based on the fol lowing differential equation with Θ Present overtemperature related to the final overtemperature at maximum allowed phase current k INom Obj τth Thermal time constant of the protected object s heating I Present true r m s value of phase current k k factor indicating the maximum p...

Page 155: ...O 2 extension module Ambient temperature detection is how ever disabled if there are communication problems between the sensor and the RTD box or between the RTD box and the protection device or if incorrect temperature values are measured In these cases an error message will be generated and the standard temperature of Θu 40 C is used instead for the calculation When measuring the coolant tempera...

Page 156: ...nction features a programmable run on time interval T EMERGENCY which is started when the binary input drops out and continues suppressing a trip signal Tripping via the overload protection is sup pressed until this time interval has elapsed The binary input affects only the trip command There is no effect on the trip log nor does the thermal replica reset Behavior in Case of Power Supply Failure ...

Page 157: ...Functions 2 9 Thermal Overload Protection 49 SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 157 Figure 2 47 Logic diagram of the overload protection ...

Page 158: ...ction is ON tripping trip log and fault recording is possible When setting Alarm Only no trip command is given no trip log is initiated and no spontaneous fault annun ciation is shown on the display Note Changing the function parameters resets the thermal replica The thermal model is frozen kept constant as soon as the current exceeds the setting value 1107 I MOTOR START Overload Parameter k facto...

Page 159: ...For cable protection the heat gain time constant τ is determined by cable specifications and by the cable en vironment If no time constant specification is available it may be determined from the short term load capa bility of the cable The 1 sec current i e the maximum current permissible for a one second period of time is often known or available from tables Then the time constant may be calcula...

Page 160: ...current k IN sec It can be used instead of the thermal warning element by setting the thermal warning element to 100 thus virtually disabling it Extension of Time Constants TIME CONSTANT set in address 4203 is valid for a running motor When a motor without external cooling is running down or at standstill the motor cools down more slowly This behavior can be modeled by increasing the time constant...

Page 161: ... the nominal current deviates from the nominal CT current the temperature must be adapted according to the formula following In address 4209 or 4210 49 TEMP RISE I the temperature adapted to the nominal transformer current is set This setting value is used as standardization quantity for the ambient temperature input with ΘNomsec Machine temperatur at secondary nominal current setting at the prote...

Page 162: ...IGSI under Display Additional Settings The table indicates region specific default settings Column C configuration indicates the corresponding sec ondary nominal current of the current transformer Addr Parameter C Setting Options Default Setting Comments 4201 FCT 49 OFF ON Alarm Only OFF 49 Thermal overload pro tection 4202 49 K FACTOR 0 10 4 00 1 10 49 K Factor 4203 TIME CONSTANT 1 0 999 9 min 10...

Page 163: ...1511 49 O L OFF OUT 49 Overload Protection is OFF 1512 49 O L BLOCK OUT 49 Overload Protection is BLOCKED 1513 49 O L ACTIVE OUT 49 Overload Protection is ACTIVE 1515 49 O L I Alarm OUT 49 Overload Current Alarm I alarm 1516 49 O L Θ Alarm OUT 49 Overload Alarm Near Thermal Trip 1517 49 Winding O L OUT 49 Winding Overload 1521 49 Th O L TRIP OUT 49 Thermal Overload TRIP 1580 RES 49 Image SP 49 Res...

Page 164: ...f auxiliary voltage interruptions of less than 50 ms do not disturb the readiness of the device for nominal auxiliary voltage 110 V Buffer Battery The buffer battery which ensures operation of the internal clock and storage of counters and annunciations if the auxiliary voltage fails is periodically checked for its charge status If there is less than the allowed minimum voltage the annunciation Fa...

Page 165: ... Σ I FACTOR Σ I takes into account the permissible current proportional ratio errors of the input transducers which are particularly prevalent during large short circuit currents Figure 2 48 The dropout ratio is about 97 Figure 2 48 Current sum monitoring An error in the current sum results in the message Failure Σ I No 162 and blocking of the protection function Furthermore a fault log is initiat...

Page 166: ...as a sensitive transformer or if the connection mode A G2 C G G B or A G2 C G G2 B was set for the current transformers at parameter 251 CT Connect current sum mon itoring is not possible AD Transformer Monitoring The digitized sampled values are being monitored in respect of their plausibility If the result is not plausible message 181 Error A D conv is issued The protection is blocked thus preve...

Page 167: ...t is exceeded an indication is generated 191 Error Offset and integrated into the warning group indication 160 As increased offset values impair the measurements we recommend sending the device to the OEM plant for corrective action should this indication persist 2 10 1 4 Monitoring of the Transformer Circuits Open circuits or short circuits in the secondary circuits of the current and voltage tra...

Page 168: ...hase voltages the rectified average values are generated and checked for symmetry of their values The smallest phase voltage is compared with the largest phase voltage Vmin Vmax BAL FACTOR V as long as Vmax BALANCE V LIMIT Where Vmax is the highest of the three voltages and Vmin the smallest The symmetry factor BAL FACTOR V address 8103 represents the allowable asymmetry of the conductor voltages ...

Page 169: ...meter PHASE SEQ address 209 If the phase sequence is changed in the relay phases B and C internal to the relay are reversed and the positive and negative sequence currents are thereby exchanged see also Section 2 18 2 The phase related messages malfunction values and mea sured values are not affected by this 2 10 1 5 Measuring Voltage Failure Detection Requirements The measuring voltage failure de...

Page 170: ...or IN or 95 for VN In the case of a low current asymmetrical fault in a system with week infeed the ground current caused by the fault could lie below the pickup threshold of the FFM An overfunctioning of the FFM can however cause the feeder protection device to underfunction since all protection functions that use voltage signals are blocked In order to prevent such an overfunctioning of the FFM ...

Page 171: ... systems where only low ground currents are to be expected The device is informed of that via address 5301 FUSE FAIL MON The logic diagram on the mode of operation in an isolated system and for 3 pole fuse failure is illustrated in Figure 2 53 The following is a description of the principles for single two and three pole faults in a secondary voltage transformer system If this part of the FFM logi...

Page 172: ...Circuits The measuring voltage failure detection is based on the fact that a significant negative sequence system is formed in the voltage during single or two phase voltage failure however without influencing the current This enables a clear distinction from asymmetries impressed by the power system If the negative sequence system is related to the current positive sequence system the following r...

Page 173: ...ondary system cannot be detected via the positive and nega tive sequence system as described above The monitoring of the progress of current and voltage over time is required here If a voltage dip to almost zero occurs or if the voltage is zero and the current remains un changed a 3 phase failure in the voltage transformer secondary system can be concluded The jump detection is used for this purpo...

Page 174: ... measured three phase currents and a decision is made The resulting alarm message may be delayed A block ing of the protection functions is however not effected This is done by the measuring voltage failure detection The broken wire monitoring is also active during a fault The function may be enabled or disabled The following logic diagram shows how the broken wire monitoring functions Figure 2 54...

Page 175: ...rth current input IN may not be sensitive Note The connections of the ground paths and their adaption factors were set when configuring the general Power System Data These settings must be correct for the measured values monitoring to function properly Measured value monitoring can be set to ON or OFF at address 8101 MEASURE SUPERV Fuse Failure Monitor FFM Via address 5301 FUSE FAIL MON you select...

Page 176: ...ph ph max 1 0 100 0 V 16 0 V Maximum phase to phase voltage 5204 Vph ph min 1 0 100 0 V 16 0 V Minimum phase to phase voltage 5205 Vph ph max min 10 0 200 0 V 16 0 V Symmetry phase to phase voltages 5206 I min 1A 0 04 1 00 A 0 04 A Minimum line current 5A 0 20 5 00 A 0 20 A 5208 T DELAY ALARM 0 00 32 00 sec 1 25 sec Alarm delay time 5301 FUSE FAIL MON OFF Solid grounded Coil gnd isol OFF Fuse Fail...

Page 177: ...on 162 Failure Σ I OUT Failure Current Summation 163 Fail I balance OUT Failure Current Balance 167 Fail V balance OUT Failure Voltage Balance 169 VT FuseFail 10s OUT VT Fuse Failure alarm 10s 170 VT FuseFail OUT VT Fuse Failure alarm instantaneous 171 Fail Ph Seq OUT Failure Phase Sequence 175 Fail Ph Seq I OUT Failure Phase Sequence Current 176 Fail Ph Seq V OUT Failure Phase Sequence Voltage 19...

Page 178: ...ected under all circuit breaker con ditions When only one binary input is used malfunctions in the circuit breaker itself cannot be detected Prerequisites A requirement for the use of trip circuit supervision is that the control voltage for the circuit breaker is at least twice the voltage drop across the binary input Vct 2 VBImin Since at least 19 V are needed for the binary input the monitor can...

Page 179: ... a short circuit exists in the trip circuit a loss of battery voltage occurs or malfunctions occur with the circuit breaker mechanism Therefore it is used as supervision criterion Table 2 8 Condition table for binary inputs depending on RTC and CB position The conditions of the two binary inputs are checked periodically A check takes place about every 600 ms If three consecutive conditional checks...

Page 180: ...is closed the binary input is short circuited and thereby deactivated logical condition L If the binary input is continuously deactivated during operation this leads to the conclusion that there is an in terruption in the trip circuit or loss of control voltage As the trip circuit supervision does not operate during system faults the closed trip contact does not lead to a fault message If however ...

Page 181: ... trip circuit the indication regarding a trip circuit interruption is delayed The time delay is set under address 8202 Alarm Delay Supervision with One Binary Input Note When using only one binary input BI for the trip circuit monitor malfunctions such as interruption of the trip circuit or loss of battery voltage are detected in general but trip circuit failures while a trip command is active can...

Page 182: ...OR LED lights up on the front cover and the green RUN LED goes out If the internal auxiliary voltage also fails all LEDs are dark Table 2 9 shows a summary of the monitoring functions and the malfunc tion responses of the device Addr Parameter Setting Options Default Setting Comments 8201 FCT 74TC ON OFF ON 74TC TRIP Circuit Supervision 8202 Alarm Delay 1 30 sec 2 sec Delay Time for alarm No Infor...

Page 183: ...ternal hardware Device shutdown ERROR LED DOK2 drops out Error in the I O board Internal hardware Device shutdown I O Board error 178 ERROR LED DOK2 drops out Offset monitoring Internal hardware Device shutdown Error Offset 191 DOK2 drops out Current sum Internal measured value acqui sition Annunciation Failure Σ I 162 As allocated Current symmetry External system or current trans former Annunciat...

Page 184: ...annunciations of the monitoring functions are already combined to group annunciations These group annunciations and their composition are stated in the Appendix A 10 In this context it must be noted that the annunciation 160 Alarm Sum Event is only issued when the measured value monitoring functions 8101 MEASURE SUPERV are activated ...

Page 185: ...hod Voltage Element The voltage element relies on a pickup initiated by the displacement voltage V0 or 3 V0 Additionally the faulty phase is determined The displacement voltage V0 can be directly applied to the device or the summation voltage 3 V0 can be calculated according to the connection type of the voltage transformer see also Param eter 213 VT Connect 3ph in Section 2 1 3 When setting Van V...

Page 186: ...supplies only a negligible ground fault current across the measurement location which must be situated between the machine terminals and the network whereas in case of a machine ground fault the higher ground fault current produced by the total network is available Ground current protection is mostly used as backup protection for high resistance ground faults in solid or low resistance grounded sy...

Page 187: ...tive part 3I0real of current 3I0 is calculated with reference to the displacement voltage V0 and compared with setting value RELEASE DIRECT The example is therefore suitable for ground fault direction in resonant grounded systems where quantity 3I0 cos ϕ is relevant The di rectional limit lines are perpendicular to axis 3I0real Figure 2 61 Directional characteristic for cos ϕ measurement The direc...

Page 188: ...lated from the power components When determining the ground fault direction the active or reactive components of the ground current in reference to the displacement voltage as well as the direction of the active and reactive power are evaluated For measurements of sin ϕ for ungrounded systems the following applies Ground fault forward direction if Q0 0 and 3I0reactive setting value RELEASE DIRECT ...

Page 189: ...kup messages are reset All elements can be blocked individually via binary inputs In this case pickup and if possible direction and grounded phase will still be reported however tripping does not take place since the time elements are blocked Figure 2 63 Activation of the sensitive ground fault detection for cos ϕ sin ϕ measurement Generation of a pickup message for both current elements is depend...

Page 190: ...Functions 2 11 Ground Fault Protection 64 67N s 50N s 51N s SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 190 Figure 2 64 Logic diagram of the VN element for cos ϕ sin ϕ measurement ...

Page 191: ...unctions 2 11 Ground Fault Protection 64 67N s 50N s 51N s SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 191 Figure 2 65 Logic diagram of the INs elements during cos ϕ sin ϕ measurement ...

Page 192: ...lacement voltage are calculated If the device is only provided with phase to phase voltages it is not possible to calculate a displacement voltage from them In this case the direction cannot be determined If the displacement voltage is calculated then 3 V0 VA VB VC If the displacement voltage is directly applied to the device then V0 is the voltage at the device terminals It is not affected by par...

Page 193: ...time overcurrent protection can be stabilized by the configured dropout delay time address 3121 50Ns T DROP OUT Tripping Range The U0 I0 ϕ characteristic is illustrated as a sector in the U0 I0 phasor diagram see Figure 2 67 This sector corresponds to the tripping area If the cursor of the ground current is in this sector the function picks up The tripping area is defined via several parameters Vi...

Page 194: ...V0 or pickup of the 50Ns 2 element or pickup of the 50Ns 1 or 51Ns element start the ground fault recording As the pickup of the Element drops out fault recording is terminated see logic diagrams 2 69 and 2 70 The entire function can be blocked under the following conditions A binary input is set the Fuse Failure Monitor or the voltage transformer protection breaker pick up Switching off or blocki...

Page 195: ...Functions 2 11 Ground Fault Protection 64 67N s 50N s 51N s SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 195 Figure 2 69 Logic diagram during V0 I0 ϕ measurement part 1 ...

Page 196: ...re 2 71 deliver a capacitive charging current nearly the total ground fault current of the system is available at the measuring point of the faulty line in the ungrounded system In the resonant grounded system it is the residual wattmetric current of the Petersen coil that flows via the measuring point Therefore on the faulty cables a clear forward decision is made whereas in other feeders either ...

Page 197: ...et at address 130 S Gnd F Dir Ch It is optional to select either the standard measurement method cos ϕ sin ϕ or the V0 I0 ϕ mea with one sector character istic At address 3101 Sens Gnd Fault the function ON or OFF can be set to either ON with GF log or Alarm Only If settings ON and ON with GF log are applied tripping is also possible otherwise a fault log is created A ground fault log is created f...

Page 198: ...ation of a user defined Curve it should be noted that there is a safety factor of approx 1 1 between pickup and setting value as is standard for inverse curves This means that pickup will only be initiated when current of 1 1 times the setting value flows The value pairs current and time are entered as multiples of the values at addresses 3119 51Ns PICKUP and 3120 51NsTIME DIAL Therefore it is rec...

Page 199: ...e in a grounded system Displacement Voltage Element V0 The displacement voltage 64 1 VGND address 3109 or 64 1 VGND address 3110 is the pickup of the ground fault detection and a release condition for the direction determination when setting the direction char acteristic to cos ϕ sin ϕ If the direction characteristic is set to V0 I0 ϕ mea the displacement voltage element is entirely independent of...

Page 200: ...therefore the pickup setting is not critical and typically lies between 30 V and 60 V for 64 1 VGND with a standard V0 connection or 50 V and 100 V for 64 1 VGND Large fault resistances may require higher sensitivity i e a lower pickup setting With regard to a grounded system a more sensitive lower pickup value may be set but it must be above the maximum anticipated displacement voltage during nor...

Page 201: ...tion of direction during ground faults The pickup current 3I0 DIR RELEASE DIRECT address 3123 must be set as high as possible to avoid false pickup of the device pro voked by asymmetrical currents in the system and by current transformers especially in the Holmgreen con nection If direction determination is used in conjunction with one of the current elements discussed above 50Ns 1 PICKUP addresse...

Page 202: ... functional description of the sen sitive ground fault detection gives an example regarding this topic The forward and reverse zone can be reduced at its boundaries at address 3160 α1 red dir area and address 3161 α2 red dir area see Figure 2 74 Siemens recommends using the default setting of 2 this corresponds to the behavior of versions without this setting option In a grounded system in feeders...

Page 203: ...th a ground fault on a cable capacitive ground currents of the galvanically con nected system flow via the measuring point except for the ground current generated in the grounded cable since the current last mentioned will flow directly to the fault location i e not via the measuring point A setting equal to about half the ground current is to be selected The measurement method should be SIN ϕ sin...

Page 204: ...urrents are involved The user is therefore encouraged to enter settings for the sensitive ground fault detection in secondary values 2 11 5 Settings Addresses which have an appended A can only be changed with DIGSI under Display Additional Settings The table indicates region specific default settings Column C configuration indicates the corresponding sec ondary nominal current of the current trans...

Page 205: ...500 A 3119 51Ns PICKUP 1A 0 05 4 00 A 1 00 A 51Ns Pickup 5A 0 25 20 00 A 5 00 A 3120 51NsTIME DIAL 0 10 4 00 sec 1 00 sec 51Ns Time Dial 3121A 50Ns T DROP OUT 0 00 60 00 sec 0 00 sec 50Ns Drop Out Time Delay 3122 67Ns 1 DIRECT Forward Reverse Non Directional Forward 67Ns 1 Direction 3123 RELEASE DIRECT 1A 0 001 1 200 A 0 010 A Release directional element 5A 0 005 6 000 A 0 050 A 3123 RELEASE DIREC...

Page 206: ...217 64 TRIP OUT 64 displacement voltage element TRIP 1221 50Ns 2 Pickup OUT 50Ns 2 Pickup 1223 50Ns 2 TRIP OUT 50Ns 2 TRIP 1224 50Ns 1 Pickup OUT 50Ns 1 Pickup 1226 50Ns 1 TRIP OUT 50Ns 1 TRIP 1227 51Ns Pickup OUT 51Ns picked up 1229 51Ns TRIP OUT 51Ns TRIP 1230 Sens Gnd block OUT Sensitive ground fault detection BLOCKED 1264 IEEa VI Corr Resistive Earth current 1265 IEEr VI Corr Reactive Earth cu...

Page 207: ... three phase currents 3 I0 Unlike the over current protection which uses the fundamental wave the intermittent ground fault protection creates the r m s value of this current and compares it to a settable threshold Iie This method accounts for higher order har monics contents up to 400 Hz and for the direct component since both factors contribute to the thermal load Pickup Tripping If the pickup v...

Page 208: ...Interaction with Breaker Failure Protection A pickup that is present when the time delay TRIP Timer has expired is interpreted by the breaker failure pro tection as a criterion for a tripping failure Since permanent pickup is not ensured after a tripping command by the intermittent ground fault protection cooperation with the breaker failure protection is not sensible There fore this function is n...

Page 209: ...elements to pick up e g 50 1 50N 1 50Ns 1 which may result in a burst of messages In order to avoid an overflow of the fault log its messages are no longer entered in the fault log after detection of intermittent ground faults indication Intermitt EF unless they cause a trip command If an intermittent ground fault has been detected the following pickup messages of the time overcurrent protection w...

Page 210: ...s Circuit breaker failure protection overload protection frequency protection and voltage protection The pickup signals of these functions will still be logged immediately A TRIP command of one of these pro tective functions will cause the buffered messages to be cleared since no connection exists between tripping function and buffered message FNo Indication Explanation 1761 50 N 51 N PU V50 N 51 ...

Page 211: ...longed at address 3303 T det ext This pickup stabilization is especially impor tant for the coordination with existing analog or electromechanical overcurrent relays The time T det ext can also be disabled T det ext 0 The stabilized pickup starts the counter T sum det This counter is stopped but not reset when the picked up function drops out Based on the last counter content the counter resumes c...

Page 212: ...03 T det ext 0 00 10 00 sec 0 10 sec Detection extension time 3304 T sum det 0 00 100 00 sec 20 00 sec Sum of detection times 3305 T reset 1 600 sec 300 sec Reset time 3306 Nos det 2 10 3 No of det for start of int E F prot No Information Type of In formation Comments 6903 IEF block SP block interm E F prot 6921 IEF OFF OUT Interm E F prot is switched off 6922 IEF blocked OUT Interm E F prot is bl...

Page 213: ... the direction Applications Directional protection against intermittent ground faults which occur e g in cables due to poor insulation or water ingress in cable joints 2 13 1 Description Activating the Function The function is only available if the device is equipped with a sensitive ground current input For voltage connection 213 VT Connect 3ph Vab Vbc or Vab Vbc Vx and for 250 50 51 2 ph prot ON...

Page 214: ...erm EF allows you to define the type of fault handling and fault logging If set to ON tripping is possible and a fault log is generated If set to ON with GF log tripping is possible a fault log and a ground fault log are generated If set to Alarm Only no tripping is possible Only an alarm is generated Furthermore only a ground fault log is created The raising pickup of the function indication 6972...

Page 215: ...alue Vgnd 3V0 Direction determination is started after the ground fault has been detected For this purpose the igniting current pulses are extracted from the ground current signal The igniting current pulse and the associated maximum displacement voltage over time are compared with regard to their phase relationship The fault direction forward or reverse is derived from this comparison Each detect...

Page 216: ...ppearing of the intermittent fault The function thus also drops out if the intermittent fault develops into a static fault V0 is lower than the set threshold Vgnd 3V0 and the time Monitoring time has expired Interaction with other Functions The directional intermittent ground fault protection does not interact with the automatic reclosing function The function cannot start the automatic reclosing ...

Page 217: ...the direction parameterized at 3402 has been detected 2 13 3 Settings 2 13 4 Information List Addr Parameter Setting Options Default Setting Comments 3401 Dir Interm EF OFF ON ON with GF log Alarm Only OFF Dir Intermittent earth fault protec tion 3402 Direction Forward Reverse Forward Direction to be protected 3403 No of pulses 2 50 5 Pulse no for detecting the interm E F 3404 Monitoring time 0 04...

Page 218: ... generated a unique time delay is initiated and a unique trip signal is generated The setting values of current threshold and delay time apply to both sources Criteria There are two criteria for breaker failure detection Check whether the current flow has effectively disappeared after a tripping command was issued Evaluate the circuit breaker s auxiliary contacts The criteria used to determine if ...

Page 219: ... values Besides the three phase currents two additional currents are provided to enable a plausibility check Separate threshold values can be used for this plausibility check if this is configured accordingly To detect ground faults more quickly the threshold value for the ground current can also be used for checking the plausibility of the phase currents This function is activated via binary inpu...

Page 220: ...n function The logic diagram illustrates the monitoring of the circuit breaker s auxiliary contacts Figure 2 81 Logic diagram for breaker failure protection monitoring of the circuit breaker auxiliary contacts Logic If breaker failure protection is initiated an alarm message is generated and a settable delay time is started If once the time delay has elapsed criteria for a pickup are still met a t...

Page 221: ...Functions 2 14 Breaker Failure Protection 50BF SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 221 Figure 2 82 Logic diagram of the breaker failure protection ...

Page 222: ...ltage pro tection Time Delay The time delay is entered at address 7005 TRIP Timer This setting should be based on the maximum circuit breaker operating time plus the dropout time of the current flow monitoring element plus a safety margin which takes into consideration the tolerance of the time delay Figure 2 83 illustrates the time sequences Figure 2 83 Time sequence example for normal clearance ...

Page 223: ...0 sec 0 25 sec TRIP Timer 7006 50BF PICKUP 1A 0 05 20 00 A 0 10 A 50BF Pickup current threshold 5A 0 25 100 00 A 0 50 A 7007 50BF PICKUP IE 1A 0 05 20 00 A 0 10 A 50BF Pickup earth current threshold 5A 0 25 100 00 A 0 50 A No Information Type of In formation Comments 1403 BLOCK 50BF SP BLOCK 50BF 1404 50BFactiv 3I0 SP 50BF Activate 3I0 threshold 1431 50BF ext SRC SP 50BF initiated externally 1451 ...

Page 224: ... Vbc or Vab Vbc Vx Table 2 13 Possible Protection Functions Characteris tic Group Characteristic Measured Quantity Protective Function ANSI No Mode of Operation Three phase Single phase Current I RMS value of fundamental com ponent Overcurrent protection Undercurrent monitoring 50 50G 37 X X Irms True RMS RMS value Overcurrent protection Thermal overload protec tion Undercurrent monitoring 50 50G ...

Page 225: ...tions Blocking via the local operating terminal may be useful if the function is in a status of permanent pickup which does not allow the function to be reset In context with voltage based char acteristics the function can be blocked if one of the measuring voltages fails Recognition of this status is either accomplished by the relay s internal Fuse Failure Monitor FNo 170 VT FuseFail see section ...

Page 226: ...ing only the current in phase Ib the measured ground current In or the mea sured displacement voltage Vn If the characteristic relates to the frequency or if external trip commands are used the operating principle is without fixed phase reference Additional parameters can be set to specify the used MEAS QUANTITY and the MEAS METHOD The MEAS METHOD determines for current and voltage measured values...

Page 227: ...s still violated the pickup of the phase e g no 235 2122 00 pickup A and of the function no 235 2121 00 picked up is reported If the pickup delay is set to zero the pickup will occur simultaneously with the detection of the threshold violation If the function is enabled the pickup will start the trip time delay and the fault log This is not the case if set to Alarm only If the threshold violation ...

Page 228: ...delay is started If the pickup time delay is set to zero the pickup condition will be reported immediately starting the trip time delay Other wise the logic is the same as depicted in Figure 2 84 Interaction with Other Functions The flexible protection functions interact with a number of other functions such as the Breaker failure protection The breaker failure protection is started automatically ...

Page 229: ... IN2 Setting no reference determines the evaluation of measured variables irrespective of a single or three phase connection of current and voltage Table 2 13 provides an overview regarding which variables can be used in which mode of operation Parameter BLK f out of r allows you to specify whether the protection function is blocked if the measured power frequency is outside the operating range of...

Page 230: ...e sequence system Zero sequence system In order to implement certain applications the positive sequence system or negative sequence system can be configured as mea surement procedure Examples are I2 tripping monitoring system U2 voltage asymmetry Selecting the selection zero sequence system enables addition al zero sequence current or zero sequence voltage functions to be implemented that operate ...

Page 231: ...d to the respective measured value channel Lx Single phase faults If for example voltage VA drops to such degree that voltages VAB and VCA exceed their threshold values the device indicates pickups Flx01 Pickup A and Flx01 Pickup C because the undershooting was detected in the first and third measured value channel Two phase faults If for example voltage VAB drops to such degree that its threshold...

Page 232: ...e ground current input INS sensitive ground current input or IN2 second ground current connected to the device can be selected If parameter 251 is set to A G2 C G G2 B the setting IN refers to the current at the second current IN2 The setting INS refers to the sensitive ground current at the fourth current input If parameter 251 is set to A G2 C G G B the setting IN2 refers to the current at the s...

Page 233: ...me delay in order to avoid both times to race The dropout ratio of the function can be selected in parameter DROPOUT RATIO The standard dropout ratio of protection functions is 0 95 default setting If the function is used as power protection a dropout ratio of at least 0 9 should be set The same applies to the utilization of the symmetrical components of current and volt age If the dropout ratio i...

Page 234: ...ible Function 0 OPERRAT MODE 3 phase 1 phase no reference 3 phase Mode of Operation 0 BLK f out of r YES NO YES Block while Freq is out of range 0 MEAS QUANTITY Please select Current Voltage P forward P reverse Q forward Q reverse Power factor dV dt rising dV dt falling Frequency df dt rising df dt falling Binray Input Please select Selection of Measured Quantity 0 MEAS METHOD Fundamental True RMS...

Page 235: ...eshold 0 P U THRESHOLD 0 10 20 00 Hz s 5 00 Hz s Pickup Threshold 0 P U THRESHOLD 1A 2 0 10000 0 W 200 0 W Pickup Threshold 5A 10 0 50000 0 W 1000 0 W 0 P U THRESHOLD 0 99 0 99 0 50 Pickup Threshold 0 P U THRESHOLD 15 100 20 Pickup Threshold 0 P U THRESHOLD 4 100 V s 60 V s Pickup Threshold 0 P U THRESHOLD 2 0 260 0 V 110 0 V Pickup Threshold 0 T TRIP DELAY 0 00 3600 00 sec 1 00 sec Trip Time Dela...

Page 236: ...TRIP Phase A 235 2116 00 BL TripB SP Function 00 BLOCK TRIP Phase B 235 2117 00 BL TripC SP Function 00 BLOCK TRIP Phase C 235 2118 00 BLOCKED OUT Function 00 is BLOCKED 235 2119 00 OFF OUT Function 00 is switched OFF 235 2120 00 ACTIVE OUT Function 00 is ACTIVE 235 2121 00 picked up OUT Function 00 picked up 235 2122 00 pickup A OUT Function 00 Pickup Phase A 235 2123 00 pickup B OUT Function 00 ...

Page 237: ... customer receives his current from the power supply company The generator runs synchronously without feeding power If the power supply company can no longer guarantee the required supply the substa tion is to be separated from the power supply company s system and the generator to take over the self supply In this example the substation is to be disconnected from the power supply company s system...

Page 238: ... 16 Reverse Power Protection Application with Flexible Protection Function SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 238 Figure 2 85 Example of a substation supplied by the internal generator ...

Page 239: ...reaker CB2 is triggered The transformer is protected by a differential protection and inverse or definite time overcurrent protection func tions for the phase to phase currents In the event of a fault the circuit breaker CB1 in the power supply com pany s system is activated via a remote link In addition the circuit breaker CB2 is activated Overcurrent protection functions protect the feeders 1 an...

Page 240: ...re fixed Determination of the Reverse Power The reverse power protection evaluates the active power from the symmetrical components of the fundamental harmonics of the voltages and currents The evaluation of the positive sequence systems causes reverse power determination to be independent of the asymmetries in currents and voltages and reflects the real load of the driving end The calculated acti...

Page 241: ...nction trips Pickup Value Dropout Ratio The pickup value of the reverse power protection is set to 10 of the nominal generator output In this example the setting value is configured as secondary power in watts The following relationship exists between the primary and the secondary power On the basis of the indicated data the pickup values are calculated considering P prim 3 81 MW 10 of 38 1 MW on ...

Page 242: ...n the scope of functions a flexible protection function flexible function 01 is configured for the present example Figure 2 88 Configuration of a flexible protection function Select Additional Functions in the Parameters menu to view the flexible function The parameter selection options for the flexible protection functions primarily depend on the settings made in the Power System Data 1 for the c...

Page 243: ...t the mode of operation Three Phase Figure 2 90 Selection of the three phase mode of operation In the menu items Meas Quantity and Meas Method Active Power reverse or Exceeding must be set If the box Display additional settings is enabled in the Settings menu item pickup threshold pickup time delay and dropout time delay can be configured As the power direction cannot be determined in the case of ...

Page 244: ...SI configuration matrix initially shows the following indications after having selected Indications and commands only and No filter Figure 2 92 Information of the flexible function default setting Clicking the texts allows for editing short text and long text as required by the application Figure 2 93 Messages of the flexible function application oriented example The indications are allocated in t...

Page 245: ...d converts it into a digital value The digital values are held available at the corresponding port RS485 or Ethernet as ordered Note Although this is not recommended by the manufacturer you can connect Ni 100 or Ni 120 temperature sensors to the RTD box But you have to bear in mind that the values have to be converted in the protection device The values displayed at the RTD box are not correct whe...

Page 246: ...igured but not assigned Additionally a group indication is formed across all temperature sensors of the RTD box or across all temperature sensors when measuring the temperature via the I O 2 extension module 14101 Fail RTD An error message is generated when the communication between RTD box and protection device is faulted or in the event of an internal fault of the internal temperature measuremen...

Page 247: ...ion of the protection functions Section 2 1 1 and if the connection type was selected Temperature supervision is activated at address 190 RTD INPUT The number of sensor inputs and the communication mode are set at address 191 RTD CONNECTION The temperature unit C or F is set in the Power System Data 1 at address 276 TEMP UNIT When connecting the RTD box 7XV5662 8AD10 with 12 temperature sensor inp...

Page 248: ...l Ambient Winding Bearing and Other The selection is not evaluated in the device but only serves the purpose of providing information about the medium in which the temperature measurement is carried out This setting is only possible in DIGSI at Display Additional Settings You can also set an alarm temperature and a tripping temperature Depending on the temperature unit selected in the Power System...

Page 249: ...The RTD box is put into operation using Web Browser Interface via PC The procedure for starting up the RTD box is described in detail in the manual supplied with the RDT box When using temperature sensors with 2 wire connection proceed as described in the section Settings at the RTD box for RS485 connection The settings can be changed either directly at the device or via the Web Browser Interface ...

Page 250: ...in the RTD box 9006 IP address 0 0 255 0 IP address 0 of RTD box connec by UDP 9007 IP address 1 0 255 0 IP address 1 of RTD box connec by UDP 9008 IP address 2 0 255 0 IP address 2 of RTD box connec by UDP 9009 IP address 3 0 255 0 IP address 3 of RTD box connec by UDP 9011A RTD 1 TYPE Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Pt 100 Ω RTD 1 Type 9012A RTD 1 LOCATION Oil Ambient Winding Bearing Ot...

Page 251: ...erature Stage 1 Pickup 9034 RTD 3 STAGE 1 58 482 F 212 F RTD 3 Temperature Stage 1 Pickup 9035 RTD 3 STAGE 2 50 250 C 120 C RTD 3 Temperature Stage 2 Pickup 9036 RTD 3 STAGE 2 58 482 F 248 F RTD 3 Temperature Stage 2 Pickup 9041A RTD 4 TYPE Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Not connected RTD 4 Type 9042A RTD 4 LOCATION Oil Ambient Winding Bearing Other Other RTD 4 Location 9043 RTD 4 STAGE ...

Page 252: ... Bearing Other Other RTD 6 Location 9063 RTD 6 STAGE 1 50 250 C 100 C RTD 6 Temperature Stage 1 Pickup 9064 RTD 6 STAGE 1 58 482 F 212 F RTD 6 Temperature Stage 1 Pickup 9065 RTD 6 STAGE 2 50 250 C 120 C RTD 6 Temperature Stage 2 Pickup 9066 RTD 6 STAGE 2 58 482 F 248 F RTD 6 Temperature Stage 2 Pickup 9071A RTD 7 TYPE Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Not connected RTD 7 Type 9072A RTD 7 L...

Page 253: ... Ni 100 Ω Not connected RTD 9 Type 9092A RTD 9 LOCATION Oil Ambient Winding Bearing Other Other RTD 9 Location 9093 RTD 9 STAGE 1 50 250 C 100 C RTD 9 Temperature Stage 1 Pickup 9094 RTD 9 STAGE 1 58 482 F 212 F RTD 9 Temperature Stage 1 Pickup 9095 RTD 9 STAGE 2 50 250 C 120 C RTD 9 Temperature Stage 2 Pickup 9096 RTD 9 STAGE 2 58 482 F 248 F RTD 9 Temperature Stage 2 Pickup 9101A RTD10 TYPE Not ...

Page 254: ...RTD11 Temperature Stage 2 Pickup 9116 RTD11 STAGE 2 58 482 F 248 F RTD11 Temperature Stage 2 Pickup 9121A RTD12 TYPE Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Not connected RTD12 Type 9122A RTD12 LOCATION Oil Ambient Winding Bearing Other Other RTD12 Location 9123 RTD12 STAGE 1 50 250 C 100 C RTD12 Temperature Stage 1 Pickup 9124 RTD12 STAGE 1 58 482 F 212 F RTD12 Temperature Stage 1 Pickup 9125 RT...

Page 255: ...St 1 p up OUT RTD 5 Temperature stage 1 picked up 14153 RTD 5 St 2 p up OUT RTD 5 Temperature stage 2 picked up 14161 Fail RTD 6 OUT Fail RTD 6 broken wire shorted 14162 RTD 6 St 1 p up OUT RTD 6 Temperature stage 1 picked up 14163 RTD 6 St 2 p up OUT RTD 6 Temperature stage 2 picked up 14171 Fail RTD 7 OUT Fail RTD 7 broken wire shorted 14172 RTD 7 St 1 p up OUT RTD 7 Temperature stage 1 picked u...

Page 256: ...g operation e g the direction of a motor is changed a reversal signal sent to the binary input routed for this purpose is sufficient to inform the protective device of the phase se quence reversal Logic Phase rotation is permanently established at address 209 PHASE SEQ Power System Data Via the exclu sive OR gate the binary input Reverse Rot inverts the sense of the phase rotation applied with set...

Page 257: ...e date 11 2012 257 2 18 2 Setting Notes Setting the Function Parameter The normal phase sequence is set at 209 see Section 2 1 3 If on the system side phase rotation is reversed temporarily then this is communicated to the protection device using the binary input Reverse Rot 5145 ...

Page 258: ...is reported 501 Relay PICKUP The general pickup is a prerequisite for a number of internal and external consequential functions The follow ing are among the internal functions controlled by general device pickup Start of a trip log From general device pickup to general device dropout all fault messages are entered in the trip log Initialization of Oscillographic Records The storage and maintenance...

Page 259: ...terminated first when the last protection func tion has dropped out no function is in pickup mode AND the minimum trip signal duration has expired Finally it is possible to latch the trip signal until it is manually reset lockout function This allows the circuit breaker to be locked against reclosing until the cause of the fault has been clarified and the lockout has been manually reset The reset ...

Page 260: ...ut relays for remote signaling Most of the messages and indications can be allocated i e configured differently from the delivery condition The Appendix of this manual deals in detail with the delivery condition and the al location options The output relays and LEDs may be operated in a latched or unlatched mode each may be set individually The latched conditions are protected against loss of the ...

Page 261: ...ximum functional scope can be found in the appendix All functions are associated with an information number FNo There is also an indication of where each message can be sent to If functions are not present in a not fully equipped version of the device or are configured to Disabled then the associated indications cannot appear Operational Messages Buffer Event Log The operational messages contain i...

Page 262: ... a trip apart from the opening of the ground fault log For cos ϕ sin ϕ measurements a criterion for the opening of the ground fault log is the pickup of the VN Element For U0 I0 ϕ measurements the ground fault log is opened as soon as a VN Element has respond ed and the angle condition is fulfilled Detailed information is provided in the logic diagrams for ground fault detection Section 2 11 As so...

Page 263: ...Hours Meter CB open A meter can be realized as a CFC application if it adds up the number of hours in state Circuit Breaker open similarly to the operating hours meter The universal hours meter is linked to a respective binary input and counts if the binary input is active Alternatively the undershooting of the parameter value 212 BkrClosed I MIN may be used as a criterion for starting the meter T...

Page 264: ...sage 52 a can also be used as a further criterion as this signals that the mechanism of the circuit breaker is put in motion in order to separate the contacts As soon as the start criterion has been fulfilled the parameterized opening time of the circuit breaker is started The time of commencement of separation of the circuit breaker contacts is thus determined The end of the trip procedure includ...

Page 265: ...Functions 2 20 Auxiliary Functions SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 265 Figure 2 101 Logic of the start and end criterion ...

Page 266: ... up to the predecessor of the starting point which is marked by the start criterion a trip has taken place which only affects the mechanical lifetime of the breaker and is consequently not detected by this procedure If the current criterion grants the logic release after the opening time has elapsed the recent primary tripping currents Ib are involuted and related to the exponentiated rated operat...

Page 267: ...between P1 and P2 can be expressed by the following exponential function n b Ib m where n is the number of operating cycles b the operating cycles at Ib 1A Ib the tripping current and m the directional coefficient The general line equation for the double logarithmic representation can be derived from the exponential func tion and leads to the coefficients b and m Note Since a directional coefficie...

Page 268: ...ime e g for phase A mechan TRIP A They act as counters which count only the trips whose tripping currents are below the value of the current criterion I2 t Procedure During the I2 t procedure the squared fault current integral occurring per trip is added up phase selectively The integral is derived from the squared instantaneous values of the currents occurring during arc time of the circuit break...

Page 269: ...tored in the startup information Motor Operation Information The motor operation statistic is newly calculated in a 600 ms cycle In the statistics buffer its image is de creased to a resolution of one hour Motor Startup Information The motor startup current and the startup voltage if the device has a voltage transformer are indicated as primary values The measurement of these statistical values is...

Page 270: ...o operate correctly The CB Tripping Time is a characteristic value provided by the manufacturer It covers the entire tripping process from the trip command applying auxiliary power to the trip element of the circuit breaker up to arc extinction in all poles The time is set at address 266 T 52 BREAKTIME The CB Operating Time T 52 OPENING is equally a characteristic value of the circuit breaker It c...

Page 271: ...arameters 266 T 52 BREAKTIME and 267 T 52 OPENING The summated values can be interpreted as the number of tripping operations at rated operational current of the CB They are displayed in the statistical values without unit and with two decimal places 2P Procedure Parameter 172 52 B WEAR MONIT can be set to activate the 2P procedure An operating cycles diagram see sample diagram in the functional d...

Page 272: ... StartupVoltage2 VI Startup Voltage 2 10040 StartDuration3 VI Start Duration 3 10041 StartupCurrent3 VI Startup Current 3 10042 StartupVoltage3 VI Startup Voltage 3 10043 StartDuration4 VI Start Duration 4 10044 StartupCurrent4 VI Startup Current 4 10045 StartupVoltage4 VI Startup Voltage 4 10046 StartDuration5 VI Start Duration 5 10047 StartupCurrent5 VI Startup Current 5 10048 StartupVoltage5 VI...

Page 273: ...the ground paths when configuring the device The following table shows the formulas which are the basis for the conversion of secondary values to primary values and percentages When using the capacitive voltage connection or with the connection types Vab Vbc or Vab Vbc Vx of the voltage transformers address 213VT Connect 3ph the measured values for power P Q S power factor energy and the derived v...

Page 274: ...lacement voltage VN is either measured directly or calculated from the phase to Ground voltages Please note that value V0 is indicated in the operational measured values The ground current IN is either measured directly or calculated from the conductor currents Vx Vx sec P Q S P and Q phase segregat ed No secondary measured values Power factor phase segre gated cos ϕ cos ϕ cos ϕ 100 in Frequency f...

Page 275: ...be transferred to a central control and storage device via port B The measuring range in which these values are transmitted depend on the protocol and if necessary additional settings Protocol Transmittable measuring range format IEC 60870 5 103 0 to 240 of the measured value IEC 61850 The primary operational measured values are transmitted The measured values as well as their unit format are set ...

Page 276: ...e Vb Ib 682 Phi C MV Angle Vc Ic 701 INs Real MV Resistive ground current in isol systems 702 INs Reac MV Reactive ground current in isol systems 805 Θ Rotor MV Temperature of Rotor 807 Θ Θtrip MV Thermal Overload 809 T reclose MV Time untill release of reclose blocking 830 INs MV INs Senstive Ground Fault Current 831 3Io MV 3Io zero sequence 832 Vo MV Vo zero sequence 901 PF MV Power Factor 1068 ...

Page 277: ... updates within the time window 15 Min 3 Subs for example means Time average is generated for all measured values with a window of 15 minutes The output is updated every 15 3 5 minutes With address 8302 DMD Sync Time the starting time for the averaging window set under address 8301 is determined This setting specifies if the window should start on the hour On The Hour or 15 minutes later 15 After ...

Page 278: ...e date and time they were last updated The minimum and maximum values of the long term averages listed in the previous section are also calculated The minimum and maximum values can be reset at any time via binary inputs or by using the integrated control panel or the DIGSI software Additionally the reset can be carried out cyclically starting at a preset point of time Addr Parameter Setting Optio...

Page 279: ...et Cycle Period 8314 MinMaxRES START 1 365 Days 1 Days MinMax Start Reset Cycle in No Information Type of In formation Comments ResMinMax IntSP_Ev Reset Minimum and Maximum counter 395 I MinMax Reset SP I MIN MAX Buffer Reset 396 I1 MiMaReset SP I1 MIN MAX Buffer Reset 397 V MiMaReset SP V MIN MAX Buffer Reset 398 VphphMiMaRes SP Vphph MIN MAX Buffer Reset 399 V1 MiMa Reset SP V1 MIN MAX Buffer Re...

Page 280: ...in MVT Vb n Min 862 Vb nMax MVT Vb n Max 863 Vc nMin MVT Vc n Min 864 Vc nMax MVT Vc n Max 865 Va bMin MVT Va b Min 867 Va bMax MVT Va b Max 868 Vb cMin MVT Vb c Min 869 Vb cMax MVT Vb c Max 870 Vc aMin MVT Vc a Min 871 Vc aMax MVT Vc a Max 872 Vn Min MVT V neutral Min 873 Vn Max MVT V neutral Max 874 V1 Min MVT V1 positive sequence Voltage Minimum 875 V1 Max MVT V1 positive sequence Voltage Maxim...

Page 281: ...ions Therefore it may not pick up if measured values are changed spontaneously in the event of a fault before a pickup or tripping of the protection function occurs This monitoring program is therefore absolutely unsuitable for blocking protection functions 2 20 6 1 Setting Notes Setpoints for Measured Values Setting is performed in the DIGSI configuration Matrix under Settings Masking I O Configu...

Page 282: ...he sub menu Statistics Double click to display the corresponding contents in new window By overwriting the previ ous value a new value can be entered see also SIPROTEC 4 System Description 2 20 7 3 Information List No Information Type of In formation Comments OpHour LV Operating hours greater than 272 SP Op Hours OUT Set Point Operating Hours 16004 ΣI x LV Threshold Sum Current Exponentiation 1600...

Page 283: ...onfigured The signs of the measured values appear as configured in address 1108 P Q sign see Section Display of Measured Values 2 20 8 2 Setting Notes Setting of parameter for meter resolution Parameter 8315 MeterResolution allows increasing the resolution of the energy metered values by the Factor 10 or Factor 100 compared to the Standard setting 2 20 8 3 Settings 2 20 8 4 Information List Addr P...

Page 284: ...trol Center Via the DIGSI device control it can be tested whether messages are transmitted correctly A dialog box shows the display texts of all messages which were allocated to the system interface port B in the DIGSI matrix In another column of the dialog box a value for the messages to be tested can be defined e g message ON message OFF After having entered password no 6 for hardware test menus...

Page 285: ... the service program DIGSI the serial interface or a binary input For the latter event Trig Wave Cap must be allocated to a binary input Triggering for the oscillographic recording then occurs for instance via the binary input when the protec tion object is energized An oscillographic recording that is triggered externally that is without a protective element pickup are pro cessed by the device as...

Page 286: ...station control equipment Applications Switchgear with single and double busbars Prerequisites The number of switchgear devices to be controlled is limited by the existing binary inputs existing binary outputs 2 21 1 1 Description Operation Using the Device s Operator Panel For controlling the device there are two independent colored keys located below the graphic display If you are somewhere in t...

Page 287: ...ion to the substation control equip ment For that it is necessary that the required periphery is physically existing in the device as well as in the substation Furthermore certain settings for the serial interface need to be made in the device see SIPROTEC 4 System Description 2 21 1 2 Information List No Information Type of In formation Comments 52Breaker CF_D12 52 Breaker 52Breaker DP 52 Breaker...

Page 288: ...ate binary outputs They serve to initiate internal functions simulate changes of state or to acknowledge changes of state Manual overriding commands to manually update information on process dependent objects such as an nunciations and switching states e g if the communication with the process is interrupted Manually over ridden objects are flagged as such in the information status and can be disp...

Page 289: ... SCADA system or substation controller Double Operation interlocking against parallel switching operation Protection Blocking blocking of switching operations by protective functions Fixed Command Checks Internal Process Time software watch dog which checks the time for processing the control action between initiation of the control and final close of the relay contact Setting Modification in Proc...

Page 290: ...ks can be activated via DIGSI interlocked switching tagging or deactivated non interlocked Deactivated interlock switching means the configured interlocking conditions are not checked in the relay Interlocked switching means that all configured interlocking conditions are checked within the command pro cessing If a condition is not fulfilled the command will be rejected by a message with a minus a...

Page 291: ...he unit has opened a fault case The OPEN command by contrast can always be executed Please be aware activation of thermal overload protection elements or sensitive ground fault de tection can create and maintain a fault condition status and can therefore block CLOSE commands If the interlocking is removed consider that on the other hand the restart inhibit for motors will not automatically reject ...

Page 292: ...Functions 2 21 Command Processing SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 292 Figure 2 106 Standard interlockings ...

Page 293: ... display They are marked by letters explained in the following table Table 2 22 Command types and corresponding messages Control Logic using CFC For bay interlocking a release logic can be created using CFC Via specific release conditions the information released or bay interlocked are available e g object 52 Close and 52 Open with the data values ON OFF Interlocking Commands Abbrev Display Switch...

Page 294: ...the current status set in the objects Switching authority and Switching authority DIGSI Configuration Table 2 23 Interlocking logic 1 also Enabled for Switching Authority LOCAL check for LOCAL status n 2 also Enabled for Switching authority REMOTE check for LOCAL REMOTE or DIGSI commands n 3 CS command source CS Auto Commands that are initiated internally command processing in the CFC are not subj...

Page 295: ...t predetermined switchgear posi tion conditions are satisfied to prevent switching errors e g disconnector vs ground switch ground switch only if no voltage applied as well as verification of the state of other mechanical interlocking in the switchgear bay e g High Voltage compartment doors Interlocking conditions can be programmed separately for each switching device for device control CLOSE and ...

Page 296: ...ommand will be refused with the operating message set condition equals actual condition If the circuit breaker switchgear device is in the intermediate position then this check is not performed bypassing interlocks Bypassing configured interlockings at the time of the switching action happens device internal via interlocking recognition in the command job or globally via so called switching modes ...

Page 297: ...e indication as it is done with the local command but by ordinary command and feedback information recording Monitoring of Feedback Information The processing of commands monitors the command execution and timing of feedback information for all com mands At the same time the command is sent the monitoring time is started monitoring of the command ex ecution This time controls whether the device ac...

Page 298: ...ses the outputs of the graphical display but with 6 lines Therefore the representation might differ from the representations in the System Description The basic differences of the device with regard to the representation are the following The current selection is indicated by inverse representation not by the prefix Figure 2 108 Inverse representation of the current selection Pushbutton Function m...

Page 299: ...evice Operation SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 299 In part the sixth line is used for representing e g the active parameter group Figure 2 109 Representation of the active parameter group line 6 ...

Page 300: ...Functions 2 22 Notes on Device Operation SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 300 ...

Page 301: ...commissioning of protection and control systems the management of power systems and the safety rules and regulations Hard ware adjustments to the power system data might be necessary The primary tests require the protected object line transformer etc to carry load 3 1 Mounting and Connections 302 3 2 Checking Connections 321 3 3 Commissioning 327 3 4 Final Preparation of the Device 348 ...

Page 302: ... diagrams for the terminal assignment of the 7SK80 are shown in Appendix A 2 Connection examples for the current and voltage transformer circuits are provided in Appendix A 3 Voltage Connection Examples Connection examples for voltage transformers are provided in Appendix A 3 It must be checked that the con figuration of the Power System Data 1 Section 2 1 3 2 corresponds with the connections The ...

Page 303: ... Group Bits 0 and 1 are configured to be controlled actuated when the associated binary input is energized high Where no not energized or not connected yes energized Table 3 1 Changing setting groups using binary inputs Figure 3 1 Connection diagram example for setting group switching using binary inputs Trip Circuit Supervision Please note that two binary inputs or one binary input and one bypass...

Page 304: ... voltage for controlling the binary input is ensured Rmax is derived as So the circuit breaker trip coil does not remain energized in the above case Rmin is derived as IBI HIGH Constant current with activated BI 0 25 mA VBI min Minimum control voltage for BI 19 V at delivery setting for nominal voltages of 24 V 48 V 88 V at delivery setting for nominal voltages of 60 V 110 V 125 V 220 V 250 V VCTR...

Page 305: ...hreshold BI 7 The settings Thresh BI 176V Thresh BI 88V Thresh BI 19V are possible For the power consumption of the resistance Example The closest standard value 200 kΩ is selected the following applies for the power IBI HIGH 0 25 mA SIPROTEC 4 7SK80 VBI min 19 V at delivery setting for nominal voltages of 24 V 48 V 88 V at delivery setting for nominal voltages of 60 V 110 V 125 V 220 V 250 V VCTR...

Page 306: ... in wide blade a Philips screwdriver size 1 a 5 mm 0 20 in socket or nut driver In order to disassemble the device first remove it from the substation installation To do so perform the steps stated in Sections Panel Flush Mounting Panel Surface Mounting or Cubicle Mounting in reverse order Note The following must absolutely be observed Disconnect the communication connections at the device bottom ...

Page 307: ...y unscrew the bottom housing screw so far that its tip no longer looks out of the thread of the mounting bracket the housing screws are captive they remain in the front cover even when unscrewed Unscrew all screws that fasten any existing communication modules in the module cover on the bottom side of the device Also unscrew the 4 countersunk screws that fasten the module cover on the bottom side ...

Page 308: ...nical data into the fuse holder 5 mm x 20 mm 0 20 0 79 in safety fuse T characteristic 2 0 A nominal current 250 V nominal voltage Switching capability 1500 VA 300 VDC Only UL approved fuses may be used This data applies to all device types 24 V 48 V and 60 V 250 V Make sure that the defective fuse has not left any obvious damage on the device If the fuse trips again after reconnection of the devi...

Page 309: ...two connection options the connection of single wires and the connection with a ring lug Only copper wires may be used We recommend ring lugs with the following dimensions Figure 3 5 Ring lug For complying with the required insulation clearances insulated ring lugs have to be used Otherwise the crimp zone has to be insulated with corresponding means e g by pulling a shrink on sleeve over We recomm...

Page 310: ...gle cables We recommend the twin cable end sleeves of the series PN 966 144 from Tyco Electronics When connecting single cables the following cross sections are allowed With terminal points lying one below the other you may connect single conductors and jumpers Order No C53207 A406 D194 1 together Please make sure that neighboring jumpers are built in connected alternately Mechanical Requirements ...

Page 311: ...terial Please observe that an approx 1 cm wide strip of the shield must remain unprotected for the ground ing Remove the inner insulation of the signal line to a length of approx 1 cm Crimp suitable bootlace ferrules to the ends of the inner conductors Pass the cables through the openings in the shield cover and connect the inner conductors as shown in the connection diagram Put the cover on the v...

Page 312: ...Mounting and Commissioning 3 1 Mounting and Connections SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 312 Figure 3 7 Cable connection ...

Page 313: ...ent of the Ethernet Interface Module The following requirement must be fulfilled There is no SIPROTEC 4 communication module mounted yet Otherwise this has to be removed before ac tually installing the Ethernet interface module see below The Ethernet interface module is inserted in the respective slot most suitably from the open bottom i e above the back of the battery case A supporting frame is p...

Page 314: ...of a SIPROTEC 4 Communication Module Otherwise the device can be reassembled again see Section Reas sembly Installation or Replacement of a SIPROTEC 4 Communication Module The following description assumes the normal case that a SIPROTEC 4 communication module which has not yet been existing is retrofitted If a SIPROTEC 4 communication module has to be removed or replaced the steps are to be perfo...

Page 315: ...upporting plate Thus even the longest connection elements of the communication module can be moved in this space between the lower supporting plate reinforcement and the locking latch in the direction of the transformer module The mounting bracket of the module is now drawn up to the stop in the direction of the lower supporting plate rein forcement Thus the 60 pin plug connector on the module and...

Page 316: ...art rests against the front edge of the hous ing Press the left housing wall slightly out and insert the electronics block carefully further into the housing When the front edge of the housing and the inside of the front plate touch center the front plate by carful lateral movements This makes sure that the front plate encloses surrounds the housing The electronics block can only be inserted cente...

Page 317: ...344 A5 Release date 11 2012 317 3 1 3 Installation 3 1 3 1 General The 7SK80 relay has a housing size 1 6 The housing has 2 covers and 4 fixing holes each at the top and bottom see Figure 3 13 and Figure 3 14 Figure 3 13 Housing with covers Figure 3 14 Housing with fixing holes without covers ...

Page 318: ...ational ground to the grounding terminal of the device The cross section of the cable used must correspond to the maximum connected cross section but must be at least 2 5 mm2 Connections are to be established via the screw terminals on the rear panel of the device in accordance with the circuit diagram The details on the connection technique for the communication modules at the bottom of the devic...

Page 319: ...rackets to the rack or cubicle using eight screws Connect a solid low ohmic protective and operational ground to the grounding terminal of the device The cross section of the cable used must correspond to the maximum connected cross section but must be at least 2 5 mm2 Connections are to be established via the screw terminals at the rear panel of the device in accordance with the circuit diagram T...

Page 320: ... operational ground to the grounding terminal of the device The cross section of the cable used must correspond to the maximum connected cross section but must be at least 2 5 mm2 Connections are to be established via the screw terminals at the rear panel of the device in accordance with the circuit diagram The details on the connection technique for the communication modules on the bottom of the ...

Page 321: ...ons 3 2 1 Checking the Data Connections of the Interfaces Pin Assignment The following tables show the pin assignment of the various interfaces The position of the connections can be seen in the following figures Figure 3 18 USB interface Figure 3 19 Ethernet connections at the device bottom Figure 3 20 Serial interface at the device bottom ...

Page 322: ...d for communication with the device the data connection is to be checked When using the interface as input for an RTD box check the interconnection according to one of the connection examples in A 3 Table 3 3 Assignment of the port A socket Connections at port B When a serial interface of the device is connected to a control center the data connection must be checked A visual check of the assignme...

Page 323: ...G Laser Radiation Class 1 Do not look directly into the fiber optic elements Signals transmitted via optical fibers are unaffected by interference The fibers guarantee electrical isolation between the connections Transmit and receive connections are represented by symbols The standard setting of the character idle state for the optical fiber interface is Light off If the character idle state is to...

Page 324: ...5 If a 7XV5662 6AD10 RTD box is connected check its connections to the interface port B Verify also the termination The terminating resistors must be connected to 7SK80 see margin heading Ter mination For more information on the 7XV5662 6AD10 please refer to the enclosed device manual Check the trans mission parameters at the RTD box In addition to the baud rate and the parity the bus number is im...

Page 325: ...device configurable pickup is to be stopped i e the measuring voltage is connected or voltage protection is blocked This can be performed by operation Before the device is energized for the first time it should be in the final operating environment for at least 2 hours to equalize the temperature to minimize humidity and to avoid condensation Connections are checked with the device at its final lo...

Page 326: ...ds The configured values of C2 can also be optimized if the phase angles between the phase to ground voltages and the phase currents are know An explanation of the procedure for optimizing the input capacitances is to be found in Section 2 1 3 2 Capacitive Voltage Measurement If test switches are used for the secondary testing of the device their functions must also be checked in particular that i...

Page 327: ...s given in Technical Data Chapter 4 must not be exceeded neither during testing nor during commissioning When testing the device with secondary test equipment make sure that no other measurement quantities are connected and that the trip and close circuits to the circuit breakers and other primary switches are disconnect ed from the device DANGER Hazardous voltages during interruptions in secondar...

Page 328: ... used while the device is in service on a live system DANGER Danger evolving from operating the equipment e g circuit breakers disconnectors by means of the test function Non observance of the following measure will result in death severe personal injury or substantial property damage Equipment used to allow switching such as circuit breakers or disconnectors is to be checked only during com missi...

Page 329: ...ection For all information that is transmitted to the central station test the options in the list which appears in SET POINT Status Make sure that each checking process is carried out carefully without causing any danger see above and refer to DANGER Click on Send in the function to be tested and check whether the transmitted information reaches the central station and shows the desired reaction ...

Page 330: ...ation module a change has to be made in the parameter set within the DIGSI Manager Mark the SIPROTEC device in your project in DIGSI 4 Manager and choose the menu entry Edit Object Properties to open the dialog box Properties SIPROTEC 4 Device zu öffnen see pict 3 23 In the properties box communications module for 11 Port B on back of device bottom and for 12 Port A on front of device bottom an in...

Page 331: ...signment for a SIPROTEC device has been changed this is usually connected with a change of the allocations of the SIPROTEC objects to the system interface After having selected a new mapping file please check the allocations to Target system interface or Source system interface in the DIGSI allocation matrix Edit Field Module specific settings In the edit field Module specific settings only change...

Page 332: ...ngs Then transfer the data to the protection device see the following figure Figure 3 26 Transmitting data Terminal Test The system interface EN 100 is preassigned with the default value zero and the module is thus set to DHCP mode The IP address can be set in the DIGSI Manager Object properties Communication parameters System interface Ethernet ...

Page 333: ...ment e g circuit breakers disconnectors by means of the test function Non observance of the following measure will result in death severe personal injury or substantial property damage Equipment used to allow switching such as circuit breakers or disconnectors is to be checked only during com missioning Do not under any circumstances check them by means of the test function during real operation b...

Page 334: ... After entry of the correct password a status change will be executed Further status changes remain possible while the dialog box is open Test of the Output Relays Each individual output relay can be energized for checking the wiring between the output relay of the 7SK80 and the substation without having to generate the message assigned to it As soon as the first change of state for any one of the...

Page 335: ...to the other input output components As soon as the first state change of any LED has been triggered all LEDs are separated from the internal device functionality and can only be controlled via the hardware test function This means e g that no LED is illuminated anymore by a pro tection function or by pressing the LED reset button Updating the Display As the Hardware Test dialog opens the operatin...

Page 336: ...er auxiliary contact s form an essential part of the breaker failure protection system in case they have been connected to the device Make sure the correct assignment has been checked External Initiation Conditions If the breaker failure protection can be started by external protection devices the external start conditions must be checked In order for the breaker failure protection to be started a...

Page 337: ...er Defined Functions CFC Logic The device has a vast capability for allowing functions to be defined by the user especially with the CFC logic Any special function or logic added to the device must be checked Of course general test procedures cannot be given Configuration of these functions and the target conditions must be actually known beforehand and tested Possible interlocking conditions of s...

Page 338: ...orrespond to the configured phase rotation in general a clockwise phase rotation If the system has an anti clockwise phase rotation this must have been considered when the power system data was set address 209 PHASE SEQ If the phase rotation is incorrect the alarm Fail Ph Seq FNo 171 is generated The measured value phase allocation must be checked and corrected if required after the line has been ...

Page 339: ...uxiliary voltage is fed to the reverse interlocking system A test current higher than the pickup values of 50 2 PICKUP and 50 1 PICKUP or 51 PICKUP is set As a result of the missing blocking signal the protection function trips after short time delay 50 2 DELAY Caution Test with currents above 20 A continuous current cause an overload of the input circuits Perform the test only for a short time se...

Page 340: ...he correlation of the mea sured load direction with the actual direction of load flow is checked In this case the normal situation is assumed whereby the forward direction measuring direction extends from the busbar towards the line P positive if active power flows into the line P negative if active power flows towards the busbar Q positive if reactive power flows into the line Q negative if react...

Page 341: ...primary check serves to find out the correct polarity of the transformer connections for the determination of the ground fault direction DANGER Energized equipment of the power system Capacitive coupled voltages at disconnected equipment of the power system Non observance of the following measure will result in death severe personal injury or substantial property damage Primary measurements must o...

Page 342: ...ond with situations that may occur in practice the non symmetry of measured values may cause the measured value monitoring to pick up This must therefore be ignored during such tests DANGER Hazardous voltages during interruptions in secondary circuits of current transformers Non observance of the following measure will result in death severe personal injury or substantial property damage Short cir...

Page 343: ...oad flow is from the line toward the busbar or the ground current path has a swapped polarity In the latter case the connection must be rectified after the line has been isolated and the current transformers short circuited If the pickup message is missing the measured ground residual current or the displacement voltage emerged may be too small This can be checked via operational measured values I...

Page 344: ...d thresholds of the temperature If temperature sensors with 2 phase connection are used you must first determine the line resistance for the temperature detector being short circuited Proceed as described in the operating manual Enter the resistance value determined for the corresponding sensor at the RTD box range 0 to 50 6 Ω When using the preset 3 phase connection for the temperature detectors ...

Page 345: ...0 86 117 055771 140 466925 111 672925 40 104 123 011173 147 613407 115 5408 50 122 129 105 154 926 119 397125 60 140 135 340259 162 408311 123 2419 70 158 141 720613 170 064735 127 075125 80 176 148 250369 177 900442 130 8968 90 194 154 934473 185 921368 134 706925 100 212 161 7785 194 1342 138 5055 110 230 168 788637 202 546364 142 292525 120 248 175 971673 211 166007 146 068 130 266 183 334982 2...

Page 346: ... circuit breaker by an external reclosing device Control from a Remote Control Center If the device is connected to a remote substation via a system interface the corresponding switching tests may also be checked from the substation Please also take into consideration that the switching authority is set in correspondence with the source of commands used 3 3 15 Creating Oscillographic Recordings fo...

Page 347: ...art of the window Double click the entry Test Wave Form in the list of the window Figure 3 31 Screen for starting the test fault recording in DIGSI Oscillographic recording is started immediately During recording a report is given in the left part of the status bar Bar segments additionally indicate the progress of the procedure The SIGRA or the Comtrade Viewer program is required to view and anal...

Page 348: ...nd states see also SIPROTEC 4 System Description The counters in the switching statistics should be reset to the values that were existing prior to the testing see also SIPROTEC 4 System Description Reset the counter of the operational measured values e g operation counter if available under MAIN MENU Measured Values Reset also see SIPROTEC 4 System Description Press the ESC key several times if n...

Page 349: ...nrush Restraint 374 4 6 Dynamic Cold Load Pickup 375 4 7 Voltage Protection 27 59 376 4 8 Negative Sequence Protection definite time characteristic 378 4 9 Negative Sequence Protection inverse time characteristics 379 4 10 Motor Starting Time Supervision 385 4 11 Motor Restart Inhibit 386 4 12 Load Jam Protection 387 4 13 Frequency Protection 388 4 14 Thermal Overload Protection 389 4 15 Ground Fa...

Page 350: ...e 1 Burden per phase and ground path at INom 1 A at INom 5 A for sensitive ground fault detection at 1 A for sensitive ground fault detection at 5 A 0 05 VA 0 3 VA 0 05 VA 0 3 VA Load capacity current path thermal rms dynamic peak value 500 A for 1 s 150 A for 10 s 20 A continuous 1250 A half cycle Load capacity input for sensitive ground fault detection INs 1 thermal rms dynamic peak value 300 A ...

Page 351: ...ia an integrated converter Nominal auxiliary AC voltage VH AC 115 V AC 230 V Permissible voltage ranges AC 92 V to 132 V AC 184 V to 265 V Overvoltage category IEC 60255 27 III Power input at 115 VAC 230 VAC 15 VA Bridging time for failure short circuit 10 ms at V 115 V 230 V Variant Quantity 7SK801 803 805 806 3 configurable 7SK802 804 7 configurable Nominal Direct Voltage Range 24 V to 250 V Cur...

Page 352: ... BREAK 40 W or 30 VA at L R 40 ms Switching voltage AC and DC 250 V Permissible current per contact continuous 5 A Permissible current per contact close and hold 30 A for 1 s NO contact Interference suppression capacitor at the relay outputs 2 2 nF 250 V ceramic Frequency Impedance 50 Hz 1 4 106 Ω 20 60 Hz 1 2 106 Ω 20 Terminal Front side non isolated USB type B socket for connecting a personal co...

Page 353: ...nnector Terminal Back case bottom mounting location B Optical wavelength λ 820 nm Laser Class 1 according to EN 60825 1 2 When using glass fiber 50 μm 125 μm or glass fiber 62 5 μm 125 µm Permissible optical signal at tenuation max 8 dB with glass fiber 62 5 μm 125 µm Bridgeable distance max 1 5 km Character idle state Configurable factory setting Light off IEC 60870 5 103 redundant RS485 Isolated...

Page 354: ...tor type ST connector transmitter receiver Terminal Back case bottom mounting location B Transmission speed Up to 19 200 Bd Optical wavelength λ 820 nm Laser Class 1 according to EN 60825 1 2 When using glass fiber 50 μm 125 μm or glass fiber 62 5 μm 125 µm Permissible optical signal at tenuation max 8 dB with glass fiber 62 5 μm 125 µm Bridgeable distance max 1 5 km Ethernet electrical EN 100 for...

Page 355: ...on ports and against the PE terminal of class III 5 kV peak value 1 2 µs 50 µs 0 5 J 3 positive and 3 negative impulses at intervals of 1 s Temperature detectors PT 100 inputs 500 V 50 Hz Standards IEC 60255 6 and 22 product standards IEC EN 61000 6 2 VDE 0435 For more standards see also individual functions 1 MHz test Class III IEC 60255 22 1 IEC 61000 4 18 IEEE C37 90 1 2 5 kV Peak 1 MHz τ 15 µs...

Page 356: ...h IEC CISPR 11 30 MHz to 1000 MHz Limit Class A Harmonic currents on the network lead at AC 230 V IEC 61000 3 2 Device is to be assigned Class D applies only to devices with 50 VA power consumption Voltage fluctuations and flicker on the network lead at AC 230 V IEC 61000 3 3 Limit values are kept Standards IEC 60255 21 and IEC 60068 Oscillation IEC 60255 21 1 Class II IEC 60068 2 6 Sinusoidal 10 ...

Page 357: ...ks in both directions of the 3 axes Standards IEC 60255 6 Type test in acc with IEC 60068 2 1 and 2 Test Bd for 16 h 25 C to 85 C or 13 F to 185 F Permissible temporary operating temperature tested for 96 h 20 C to 70 C or 4 F to 158 F clearness of the display may be impaired from 55 C or 131 F Recommended for permanent operation in acc with IEC 60255 6 5 C to 55 C or 23 F to 131 F Limit temperatu...

Page 358: ... substation Do not withdraw or insert individual modules or boards while the protective device is energized When han dling modules outside the case the standards for components sensitive to electrostatic discharge Electro statically Sensitive Devices must be observed They are not endangered inside the case Only temperature sensors with 3 wire connection and shielded connection cables may be connec...

Page 359: ...ned technician Replace Battery with VARTA or Panasonic Cat Nos CR 1 2 AA or BR 1 2 AA only Use of another Battery may present a risk of fire or explosion See manual for safety instructions Caution The battery used in this device may present a fire or chemical burn hazard if mistreated Do not recharge disassemble heat above 100 C 212 F or inciner ate Dispose of used battery promptly Keep away from ...

Page 360: ...ent 50N 1 50N 2 ground for INom 1 A 0 05 A to 35 00 A or disabled Increments 0 01 A for INom 5 A 0 25 A to 175 00 A or disabled Pickup Current 50N 3 ground for INom 1 A 0 25 A to 35 00 A or disabled for INom 5 A 1 25 A to 175 00 A or disabled Time delays T 0 00 s to 60 00 s or disabled Increments 0 01 s Dropout time delays 50 T DROP OUT 50N T DROP OUT 0 00 s to 60 00 s Increments 0 01 s Pickup tim...

Page 361: ... or 10 ms Auxiliary DC voltage in range 0 8 VAux VAuxNom 1 15 1 Temperature in range 5 C 41 F Θamb 55 C 131 F 0 5 10 K Frequency in the range of 25 Hz 70 Hz Frequency in the range of 0 95 f fNom 1 05 fNom 50 Hz or 60 Hz 1 Frequency outside range 0 95 f fNom 1 05 Increased tolerances Harmonics up to 10 3rd harmonic up to 10 5th harmonic at instantaneous value of 50 3 50N 3 elements 1 1 Increased to...

Page 362: ...20 00 A Pickup currents 51N ground for INom 1 A 0 05 A to 4 00 A Increments 0 01 A for INom 5 A 0 25 A to 20 00 A Time multiplier T for 51 51N for IEC characteristics 0 05 s to 3 20 s or disabled Increments 0 01 s Time multiplier T for 51 51N for ANSI characteristics 0 50 s to 15 00 s or disabled Increments 0 01 s Undervoltage threshold 51V V for release of 51 10 0 V to 125 0 V Increments 0 1V Acc...

Page 363: ...onds to approx 0 95 pickup value IEC with Disk Emulation approx 0 90 Ip setting value Pickup dropout thresholds Ip IEp 3 of setting value or 15 mA for INom 1 A or 75 mA for INom 5 A Trip time for 2 I Ip 20 5 of reference calculated value 2 current tolerance or 30 ms Dropout time for I Ip 0 90 5 of reference calculated value 2 current tolerance or 30 ms Power supply direct voltage in range 0 8 VAux...

Page 364: ...Data 4 3 Inverse time Overcurrent Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 364 Figure 4 1 Dropout time and trip time curves of the inverse time overcurrent protection acc to IEC ...

Page 365: ...Data 4 3 Inverse time Overcurrent Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 365 Figure 4 2 Dropout time and trip time curves of the inverse time overcurrent protection acc to IEC ...

Page 366: ...12 366 Trip Time Curves acc to ANSI Acc to ANSI IEEE see also Figures 4 3 to 4 6 The tripping times for I Ip 20 are identical with those for I Ip 20 For zero sequence current read 3I0p instead of Ip and T3I0p instead of Tp for ground fault read IEp instead of Ip and TIEp instead of Tp Pickup Threshold approx 1 10 Ip ...

Page 367: ...nstead of Ip and T3I0p instead of Tp for ground fault read IEp instead of Ip and TIEp instead of Tp ANSI without Disk Emulation approx 1 05 setting value Ip for Ip IN 0 3 this corresponds to approx 0 95 pickup value ANSI with Disk Emulation approx 0 90 Ip setting value Pickup and Dropout Thresholds Ip INp 3 of setting value or 15 mA for INom 1 A or 75 mA for INom 5 A Trip Time for 2 I Ip 20 5 of r...

Page 368: ...nge 0 8 VAux VAuxNom 1 15 1 Temperature in range 23 00 F 5 C Θ amb 131 00 F 55 C 0 5 10 K Frequency in range of 25 Hz 70 Hz Frequency in range of 0 95 f fNom 1 05 fNom 50 Hz or 60 Hz 1 Frequency in range 0 95 f fNom 1 05 Increased Toler ances Harmonics up to 10 3rd harmonic up to 10 5th harmonic 1 1 Transient overreaction during first harmonic measuring technique for τ 100 ms with full displacemen...

Page 369: ...a 4 3 Inverse time Overcurrent Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 369 Figure 4 3 Dropout time and trip time curves of the inverse time overcurrent protection acc to ANSI IEEE ...

Page 370: ...a 4 3 Inverse time Overcurrent Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 370 Figure 4 4 Dropout time and trip time curves of the inverse time overcurrent protection acc to ANSI IEEE ...

Page 371: ...a 4 3 Inverse time Overcurrent Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 371 Figure 4 5 Dropout time and trip time curves of the inverse time overcurrent protection acc to ANSI IEEE ...

Page 372: ...ta 4 3 Inverse time Overcurrent Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 372 Figure 4 6 Dropout time and trip time curve of the inverse time overcurrent protection acc to ANSI IEEE ...

Page 373: ...t 180 to 180 Increments 1 Dropout difference 3 Directional sensitivity VN 2 5 V displacement voltage measured 3V0 5 V displacement voltage calculated Polarization with negative sequence quantities 3V2 3I2 Forward range Vref rot 86 Rotation of the reference voltage Vref rot 180 to 180 Increments 1 Dropout difference 3 Directional sensitivity 3V2 5 V negative sequence voltage 3I2 45 mA negative sequ...

Page 374: ...I2f I 10 to 45 Increments 1 Lower function limit phases for INom 1 A at least one phase current 50 Hz and 100 Hz 50 mA for INom 5 A at least one phase current 50 Hz and 100 Hz 125 mA Lower function limit ground for INom 1 A Ground current 50 Hz and 100 Hz 50 mA for INom 5 A Ground current 50 Hz and 100 Hz 125 mA Upper function limit configurable for INom 1 A 0 30 A to 25 00 A Increments 0 01 A for...

Page 375: ...Current control Current threshold BkrClosed I MIN reset on current falling below threshold monitoring with timer Current Control for INom 1 A 0 04 A to 1 00 A Increments 0 01 A for INom 5 A 0 20 A to 5 00 A Time Until Changeover To Dynamic Settings TCB OPEN 0 s to 21600 s 6 h Increments 1 s Period Dynamic Settings are Effective After a Reclosure TActive 1 s to 21600 s 6 h Increments 1 s Fast Reset...

Page 376: ...Current criterion BkrClosed I MIN for INom 1 A 0 04 A to 1 00 A Increments 0 01 A for INom 5 A 0 20 A to 5 00 A Overvoltages 59 1 59 2 Measured quantity used Positive sequence system of the voltages Negative sequence system of the voltages Largest phase to phase voltage Largest phase to Ground voltage Connection of phase to Ground voltages Evaluation of phase to Ground voltages Evaluation of phase...

Page 377: ...1 27 2 27 1 V1 27 2 V1 Overvoltage 59 1 59 2 Overvoltage 59 1 V1 59 2 V1 59 1 V2 59 2 V2 Approx 50 ms Approx 50 ms Approx 60 ms Voltage limit values 3 of setting value or 1 V Delay times T 1 of setting value or 10 ms Auxiliary DC voltage in range 0 8 VAux VAuxNom 1 15 1 Temperature in range 5 C 41 F Θamb 55 C 131 F 0 5 10 K Frequency in range of 25 Hz 70 Hz Frequency in range of 0 95 f fNom 1 05 f...

Page 378: ... s Increments 0 01 s Functional Limit for INom 1 A all phase currents 10 A for INom 5 A all phase currents 50 A for INom 1 A one phase current 0 05 A for INom 5 A one phase current 0 25 A Pickup Times Dropout Times Approx 35 ms Approx 35 ms Characteristic 46 1 46 2 Approx 0 95 for I2 INom 0 3 Pickup values 46 1 46 2 3 of setting value or 15 mA for INom 1 A or 75 mA for INom 5 A Time Delays 1 or 10...

Page 379: ...acc to IEC Pickup value 46 TOC I2p for INom 1 A 0 05 A to 2 00 A Increments0 01 A for INom 5 A 0 25 A to 10 00 A Time Multiplier TI2p IEC 0 05 s to 3 20 s or disabled Increments 0 01 s Time Multiplier DI2p ANSI 0 50 s to 15 00 s or disabled Increments 0 01 s Functional Limit for INom 1 A all phase currents 10 A for INom 5 A all phase currents 50 A See also Figure 4 7 The trip times for I2 I2p 20 a...

Page 380: ...ented trip time characteristic curves in the figures 4 8 and 4 9 each on the right side of the figure The trip times for I2 I2p 20 are identical to those for I2 I2p 20 Pickup Threshold Approx 1 10 I2p Pickup threshold I2p 3 of setting value or 15 mA for INom 1 A or 75 mA at INom 5 A Time for 2 I I2p 20 5 of reference calculated value 2 current tolerance or 30 ms Representation of the possible drop...

Page 381: ...ion Approx 0 90 I2p setting value Dropout value I2p Time for I2 I2p 0 90 3 of setting value or 15 mA for INom 1 A or 75 mA for INom 5 A 5 of reference calculated value 2 current tolerance or 30 ms Power Supply DC Voltage in Range 0 8 VAux VAuxNom 1 15 1 Temperature in range 23 00 F 5 C Θ amb 131 00 F 55 C 0 5 10 K Frequency in range of 25 Hz 70 Hz Frequency in range of 0 95 f fNom 1 05 fNom 50 Hz ...

Page 382: ...ative Sequence Protection inverse time characteristics SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 382 Figure 4 7 Trip time characteristics of the inverse time negative sequence element 46 TOC acc to IEC ...

Page 383: ...ve Sequence Protection inverse time characteristics SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 383 Figure 4 8 Dropout time and trip time characteristics of the inverse time unbalanced load stage acc to ANSI ...

Page 384: ...ve Sequence Protection inverse time characteristics SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 384 Figure 4 9 Dropout time and trip time characteristics of the inverse time unbalanced load stage acc to ANSI ...

Page 385: ...nts 0 1 s Permissible locked rotor time TLOCKED ROTOR 0 5 s to 180 0 s or disabled Increments 0 1 s Maximum startup time with warm motor TMax STARTUP W 0 5 s to 180 0 s or disabled Increments 0 1 s Maximum startup time with cold motor 0 to 80 or disabled Increments 1 Dropout ratio Approx 0 95 Pickup threshold 3 of setting value or 15 mA for INom 1 A or 75 mA for INom 5 A Time delay 5 or 30 ms Powe...

Page 386: ...ble number of warm startups nWARM 1 to 4 Increment 1 Difference between cold and warm startups nCOLD nWARM 1 to 2 Increment 1 Extension of Time Constant at stop kτ at STOP 0 2 to 100 0 Increment 0 1 Extension of Time constant at running kτ at RUNNING 0 2 to 100 0 Increment 0 1 Where ΘRESTART Temperature limit below which restarting is possible kR k factor for the rotor ISTARTUP Startup current IMo...

Page 387: ... 00 s Increments 0 01 s Blocking duration after motor start 0 00 s to 600 00 s Increments 0 01 s Pickup time approx 55 ms Dropout time approx 30 ms Dropout ratio tripping stage approx 0 95 Dropout ratio warning stage approx 0 95 Pickup threshold for INom 1 A 3 of setting value or 15 mA for INom 5 A 3 of setting value or 75 mA Time delay 1 or 10 ms Power supply direct voltage in range 0 8 VPS VPSNo...

Page 388: ...rements 0 01 Hz Delay times T 0 00 s to 100 00 s or dis abled Increments 0 01 s Undervoltage blocking 10 V to 150 V Increments 1 V Pickup times f f approx 100 ms at fNom 50 Hz approx 80 ms at fNom 60 Hz Dropout times f f approx 100 ms at fNom 50 Hz approx 80 ms at fNom 60 Hz Δf I pickup value dropout value I 0 02 Hz to 1 Hz Dropout Ratio for Undervoltage Blocking approx 1 05 Pickup frequencies 81 ...

Page 389: ...hen Machine Stopped 1 0 to 10 0 relative to the time constant for the machine running Increments 0 1 Emergency Time TEmergency 10 s to 15000 s Increments 1 s Nominal Overtemperature for INom 40 C to 200 C 13 F to 185 F Increments 1 C Formula for primary values Θ ΘTrip Θ ΘAlarm I IAlarm Drops out with ΘAlarm Approx 0 99 Approx 0 97 Referring to k INom Referring to trip time 3 or 15 mA for INom 1 A ...

Page 390: ...Technical Data 4 14 Thermal Overload Protection SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 390 Figure 4 10 Trip time curves for the thermal overload protection 49 ...

Page 391: ...f setting value or 10 ms Measuring Principle Voltage measurement phase Ground VPHASE MIN Ground Fault Phase 10 V to 100 V Increments 1V VPHASE MAX Healthy Phase 10 V to 100 V Increments 1V Measurement Tolerance acc to VDE 0435 Part 303 3 of setting value or 1 V Pickup current 50Ns 2 PICKUP 50Ns 1 PICKUP for sensitive 1 A transformer for sensitive 5 A transformer for normal 1 A transformer for norm...

Page 392: ...1Ns Dropout ratio Approx 1 05 I51Ns for I51Ns 50 mA Measurement tolerance sensitive non sensitive 3 of setting value or 1 mA at INom 1 A or 5 mA at INom 5 A for setting values 10 mA approx 20 3 of setting value or 15 mA for INom 1 A or 75 mA for INom 5 A Operating time tolerance in linear range 7 of reference calculated value for 2 I I51Ns 20 2 current tolerance or 70 ms Auxiliary DC voltage in ra...

Page 393: ...0 001 A Increments 0 005 A Incre ments 0 01 A Increments 0 05 A Dropout ratio Approx 0 80 Measurement method cos ϕ and sin ϕ Directional limit line PHI CORRECTION 45 0 to 45 0 Increments 0 1 Dropout delay RESET DELAY 1 s to 60 s Increments 1 s Limitation of the directional areas using α1 and α2 1 to 15 Increments 1 Angle tolerance 3 Direction measurement IN and VN measured 3I0 and 3V0 calculated M...

Page 394: ... normal 5 A transformer 0 001 A to 1 600 A 0 005 A to 8 000 A 0 05 A to 35 00 A 0 25 A to 175 00 A Increments 0 001 A Increments 0 005 A Increments 0 01 A Increments 0 05 A Measurement tolerance sensitive non sensitive 3 of setting value or 1 mA at IN 1 A or 5 mA at INom 5 A for setting values 10 mA approx 20 3 of setting value or 15 mA at INom 1 A or 75 mA at INom 5 A Angle tolerance 3 Note Due t...

Page 395: ...crements 0 001 A Increments 0 001 A Pickup extension time Tv 0 00 s to 10 00 s Increments 0 01 s Ground Fault Accumulation Time Tsum 0 00 s to 100 00 s Increments 0 01 s Reset Time for Accumulation Tres 1 s to 600 s Increments 1 s Number of Pickups for Intermittent Ground Faults 2 to 10 Increments 1 Pickup Times Current 1 25 x Pickup Value for 2 Pickup Value Dropout Time without extension time App...

Page 396: ...ncing Variables Pickup threshold Vgnd 3V0 2 0 V to 100 0 V Increments 1 V Monitoring time after pickup detected 0 04 s 10 00 s Increents 0 01 s Pulse no for detecting the interm E F 2 50 Increments 1 Dropout ratio Vgnd 3V0 0 95or pickup value 0 6 V Measurement tolerance Vgnd 3V0 3 of setting value Times 1 of setting value or 10 ms Power supply direct voltage in range 0 8 VPS VPSNom 1 15 1 Temperat...

Page 397: ... A 0 05 A to 20 00 A Increments 0 01 A for INom 5 A 0 25 A to 100 00 A Time delay 50 BF trip timer 0 06 s to 60 00 s or Increments 0 01 s Pickup times for internal start for external start Dropout time Dropout ratio Included in time delay Included in time delay approx 25 ms 0 95 minimal hysteresis between pickup and tripping 32 5 mA Pickup threshold 50 1 BF 50N 1 BF 3 of setting value or 15 mA for...

Page 398: ...Increments 1 Sensitive ground current INs 0 001 A to 1 500 A Increments 0 001 A Voltage V V1 V2 3V0 2 0 V to 260 0 V Increments 0 1 V Displacement voltage VN 2 0 V to 200 0 V Increments 0 1 V Power P Q for IN 1 A 2 0 W to 10000 W Increment 0 1 W for IN 5 A 10 W to 50000 W Power factor cosϕ 0 99 to 0 99 Increments 0 01 Frequency for fNom 50 Hz for fNom 60 Hz 40 0 Hz to 60 0 Hz 50 0 Hz to 70 0 Hz In...

Page 399: ...tage phase quantities for 2 times the setting value for 10 times the setting value approx 30 ms approx 20 ms Current voltage symmetrical components for 2 times the setting value for 10 times the setting value approx 40 ms approx 30 ms Power typical maximum small signals and threshold values approx 120 ms approx 350 ms Power factor 300 to 600 ms Frequency approx 100 ms Frequency change for 1 25 tim...

Page 400: ... or 0 2 V Voltage symmetrical components 4 of setting value or 0 2 V Voltage change dV dt 5 of setting value or 2 V s Power for INom 1 A 3 of setting value or 0 5 W for INom 5 A 3 of setting value or 2 5 W Power factor 3 Frequency 15 mHz Frequency change 5 of setting value or 0 05 Hz s Times 1 of setting value or 10 ms Auxiliary DC voltage in range 0 8 VAux VAuxNom 1 15 1 Temperature in range 5 C ...

Page 401: ... sion module max 5 Measurement method Pt 100 Ω or Ni 100 Ω or Ni 120 Ω 3 wire connection shielded cable Installation identification Oil or Ambient or Stator or Bearing or Other Number of measuring points Maximal of 12 temperature measuring points Temperature Unit C or F adjustable Measuring Range for Pt 100 for Ni 100 for Ni 120 199 C to 800 C 326 F to 1472 F 54 C to 278 C 65 F to 532 F 52 C to 26...

Page 402: ...0 Manual E50417 G1140 C344 A5 Release date 11 2012 402 Indication Thresholds for each measuring point Stage 1 50 C to 250 C 58 F to 482 F or no message increment 1 C increment 1 F Stage 2 50 C to 250 C 58 F to 482 F or no message increment 1 C increment 1 F ...

Page 403: ...NCEL Cancel command X X X X CMD_CHAIN Switching Sequence X X CMD_INF Command Information X COMPARE Metered value compar ison X X X X CONNECT Connection X X X COUNTER Counter X X X X DI_GET_STATUS Decode status of double point indication X X X X DI_SET_STATUS Generate double point indication with status X X X X D_FF D Flipflop X X X D_FF_MEMO Status Memory for Restart X X X X DI_TO_BOOL Double Poin...

Page 404: ...DETECT Edge detector X X X X RS_FF RS Flipflop X X X RS_FF_MEMO RS Flipflop with status memory X X X SQUARE_ROOT Root Extractor X X X X SR_FF SR Flipflop X X X SR_FF_MEMO SR Flipflop with status memory X X X ST_AND AND gate with status X X X X ST_NOT Inverter with status X X X X ST_OR OR gate with status X X X X SUB Substraction X X X X TIMER Timer X X TIMER_SHORT Simple timer X X UINT_TO_REAL Con...

Page 405: ...ption Limit Comment Maximum number of all CFC charts considering all task levels 32 If the limit is exceeded the device rejects the parameter set with an error message restores the last valid parameter set and restarts using that parameter set Maximum number of all CFC charts considering one task level 16 When the limit is exceeded an error message is output by the device Consequently the device s...

Page 406: ...ocessing 12000 PLC_BEARB fast PLC processing 600 SFS_BEARB interlocking 10000 Individual element Number of TICKS Block basic requirement 5 Each input from the 3rd additional input on for generic modules 1 Combination with input signal border 6 Combination with output signal border 7 Additionally for each chart 1 Arithmetic ABS_VALUE 5 ADD 26 SUB 26 MUL 26 DIV 54 SQUARE_ROOT 83 Base logic AND 5 CON...

Page 407: ...nverter BOOL_TO_DI 5 BUILD_DI 5 DI_TO_BOOL 5 DM_DECODE 8 DINT_TO_REAL 5 DIST_DECODE 8 UINT_TO_REAL 5 REAL_TO_DINT 10 REAL_TO_UINT 10 Comparison COMPARE 12 LOWER_SETPOINT 5 UPPER_SETPOINT 5 LIVE_ZERO 5 ZERO_POINT 5 Metered value counter COUNTER 6 Time and clock pulse TIMER 5 TIMER_LONG 5 TIMER_SHORT 8 ALARM 21 BLINK 11 Other IO_UNIT 17 Individual element Number of TICKS In addition to the defined p...

Page 408: ... of SNom Range Tolerance 1 0 to 120 SNom 1 5 of SNom For V VNom and I INom 50 to 120 P active power with sign total and phase segregated in kW MW or GW primary and in SNom Range Tolerance 1 0 to 120 SNom 2 of SNom For V VN and I INom 50 to 120 and cos ϕ 0 707 to 1 With SNom 3 VNom INom Q reactive power with sign total and phase segregated in kVAr MVAr or GVAr primary and in SNom Range Tolerance 1 ...

Page 409: ...ion via RTD Boxes Time Window 5 15 30 or 60 minutes Frequency of Updates adjustable Long Term Averages of Currents of Real Power of Reactive Power of Apparent Power IAdmd IBdmd ICdmd I1dmd in A kA Pdmd in W kW MW Qdmd in VAr kVAr MVAr Sdmd in VAr kVAr MVAr Storage of Measured Values with date and time Reset automatic Time of day adjustable in minutes 0 to 1439 min Time frame and starting time adju...

Page 410: ...ts only for connection of phase Ground voltages Current asymmetry Imax Imin symmetry factor for I Ilimit Voltage asymmetry Vmax Vmin symmetry factor for V Vlimit Current sum iA iB iC kI iN limit value with Current phase sequence Clockwise ABC counter clockwise ACB Voltage phase sequence Clockwise ABC counter clockwise ACB Recording of indications of the last 8 power system faults Recording of indi...

Page 411: ... up to 4 decimal places Total number of motor startups 0 to 9999 Resolution1 Total operating time 0 to 99999 h Resolution1 h Total down time 0 to 99999 h Resolution1 h Ratio operating time down time 0 to 100 Resolution 0 1 Active energy and reactive energy see Operational Measured Values Motor start up data Start up time Start up current primary Start up voltage primary of the last 5 start ups 0 3...

Page 412: ... 4 Fieldbus DNP serial or DNP3 TCIP Modbus IEC 60870 5 103 redundant External synchronization using field bus 5 SNTP IEC 61850 DNP3 TCP PROFINET IO External synchronization using port B IEC 61850 SNTP no IEC61850 External synchronization via port A Parameterization via device notes under 2 1 2 2 Number of available setting groups 4 parameter group A B C and D Switchover can be performed via the ke...

Page 413: ...ing Freely programmable interlocking Messages Feedback messages closed open intermediate position Control Commands Single command double command Switching Command to Circuit Breaker 1 1 and 2 pole Programmable Logic Controller PLC logic graphic input tool Local Control Control via menu control assignment of function keys Remote Control Using Communication Interfaces Using a substation automation a...

Page 414: ...g housing size 1 6 Note A set of mounting brackets consisting of upper and lower mounting rail order no C73165 A63 D200 1 is required for cubicle mounting When using the Ethernet interface it may be necessary to rework the lower mounting rail Provide for sufficient space at the device bottom side or below the device to accommodate the cables of the com munication modules 4 24 2 Figure 4 12 Dimensi...

Page 415: ...4 24 Dimensions SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 415 4 24 3 Panel Surface Mounting Housing Size 1 6 Figure 4 13 Dimensional drawing of a 7SK80 for panel surface mounting housing size 1 6 ...

Page 416: ...Technical Data 4 24 Dimensions SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 416 4 24 4 Bottom view Figure 4 14 Bottom view of a 7SK80 housing size 1 6 ...

Page 417: ...how the proper connections of the devices to primary equipment in many typical power system configurations Tables with all settings and all information available in this device equipped with all options are provided Default settings are also given A 1 Ordering Information and Accessories 418 A 2 Terminal Assignments 423 A 3 Connection Examples 429 A 4 Current Transformer Requirements 442 A 5 Defau...

Page 418: ...ng inputs 4 x I Pos 7 Iph 1 A In 1 A 5 A 1 Iph 1 A Ins sensitive 0 001 to 1 6 A 0 005 to 8 A 2 Auxiliary voltage power supply pilot voltage Pos 8 DC 24 V 48 V 1 DC 60 V 110 V 125 V 220 V 250 V AC 115 V AC 230 V 5 Construction Pos 9 Surface mounting case screw type terminals B Flush mounting case screw type terminals E Region specific default settings function versions and language default settings...

Page 419: ...dbus electrical RS485 L 0 D Modbus optical 820 nm ST connector L 0 E DNP3 0 electrical RS485 L 0 G DNP3 0 optical 820 nm ST connector L 0 H IEC 60870 5 103 Protocol redundant electrical RS485 RJ45 connector L 0 P IEC 61850 100Mbit Ethernet electrical double RJ45 connector L 0 R IEC 61850 100 Mbit Ethernet optical double LC connector L 0 S DNP3 TCP 100 Mbit Ethernet electrical double RJ45 connector...

Page 420: ...n 50BF Breaker failure protection 86 Lock out 48 Motor Starting Protection 37 Undercurrent surveillance 66 86 Restart inhibit for motors 14 Locked rotor protection 51M Load jam protection Motor statistics Cold load pickup Monitoring functions Circuit breaker control Flexible protection functions parameters from current Inrush restraint Basic design 4 ground fault direction detection voltage protec...

Page 421: ...D676 1 Ethernet electrical EN 100 PROFINET IO C53207 A351 D688 1 Ethernet optical EN 100 PROFINET IO C53207 A351 D689 1 Ethernet electrical EN 100 DNP3 TCP C53207 A351 D684 1 Ethernet optical EN 100 DNP3 TCP multimode C53207 A351 D686 1 IEC 60870 5 103 protocol redundant RS485 C53207 A351 D644 1 Ethernet port electrical at port A C53207 A351 D151 1 RTD Box Thermobox Name Order number RTD box RS 48...

Page 422: ...181 1 Voltage terminal block D inverse printed 1 C53207 A406 D182 1 shield for voltage terminals block D 1 C53207 A406 D191 1 Current terminal block 4xI C53207 A406 D185 1 Current terminal block 3xI 1xINs sensitive C53207 A406 D186 1 Current terminal short circuit links 3 pieces C53207 A406 D193 1 Voltage terminal short circuit links 6 pieces C53207 A406 D194 1 1 If the voltage terminal is used fo...

Page 423: ...s SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 423 A 2 Terminal Assignments A 2 1 7SK80 Housing for panel flush mounting and cubicle installation and for panel surface mounting 7SK801 Figure A 1 Block diagram 7SK801 ...

Page 424: ...Appendix A 2 Terminal Assignments SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 424 7SK802 Figure A 2 Block diagram 7SK802 ...

Page 425: ...Appendix A 2 Terminal Assignments SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 425 7SK803 Figure A 3 General diagram 7SK803 ...

Page 426: ...Appendix A 2 Terminal Assignments SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 426 7SK804 Figure A 4 General diagram 7SK804 ...

Page 427: ...A 2 Terminal Assignments SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 427 7SK805 Figure A 5 General diagram 7SK805 The shielding of the connecting cable is connected directly to the shield cap ...

Page 428: ...A 2 Terminal Assignments SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 428 7SK806 Figure A 6 General diagram 7SK806 The shield of the connecting cable is connected directly to the shield cover ...

Page 429: ...3 Connection Examples Figure A 7 Current transformer connections to three current transformers and neutral rpoint current ground current Holmgreen connection appropriate for all networks Figure A 8 Current transformer connections to two current transformers only for isolated or resonant grounded networks ...

Page 430: ... shield must be effected at the cable side Note The switchover of the current polarity address 201 also reverses the polarity of the current input IN Figure A 10 Current transformer connections to two current transformers additional cable type current transformer for sensitive ground fault detection only for isolated or resonant grounded net works Important Grounding of the cable shield must be ef...

Page 431: ...pe current transformer for sensitive ground fault detection Important Grounding of the cable shield must be effected at the cable side Note The switchover of the current polarity address 201 also reverses the polarity of the current input INs Figure A 12 Transformer connections to three current transformers and three voltage transformers phase to ground voltages normal circuit layout appropriate f...

Page 432: ...endix A 3 Connection Examples SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 432 Figure A 13 Transformer connections to three current transformers and three voltage transformers capacitive ...

Page 433: ...OTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 433 Figure A 14 Transformer connections to three current transformers two voltage transformers phase to phase voltages and broken delta winding da dn appropriate for all networks ...

Page 434: ...irectional ground protection is needed Figure A 16 Current transformer connections to three current transformers two voltage transformers in open deltaconnection only for isolated or resonant grounded networks no directional ground protection since displacement voltage cannot be calculated Hint If the system has only 2 voltage transformers open delta connection the device too should be con nected ...

Page 435: ... winding maximum precision for sensitive ground fault detection Important Grounding of the cable shield must be effected at the cable side For busbar side grounding of the current transformers the current polarity of the device is changed via address 0201 This also reverses the polarity of the current input IN INs When using a cable type current transformer the connection of k and I at F8 and F7 m...

Page 436: ...ound current is taken via the highly sensitive and sensitive ground input Important Grounding of the cable shield must be effected at the cable side For busbar side grounding of the current transformers the current polarity of the device is changed via address 0201 This also reverses the polarity of current input INs When using a cable type current transformer the con nection of k and I at F8 and ...

Page 437: ...r starpoint Important Grounding of the cable shield must be effected at the cable side For busbar side grounding of the current transformers the current polarity of the device is changed via address 0201 This also reverses the polarity of the current input IN INs When using a cable type current transformer the connection of k and l at F8 and F7 must be exchanged Figure A 20 Example for the connect...

Page 438: ...344 A5 Release date 11 2012 438 Figure A 21 Voltage transformer connections to two voltage transformers phase to phase voltages and broken delta winding da dn appropriate for all networks Figure A 22 Example for connection type VAN VBN VCN busbar side voltage connection ...

Page 439: ...Appendix A 3 Connection Examples SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 439 Figure A 23 Example for connection type VAB VBC Vx Figure A 24 Example for connection type VAB VBC ...

Page 440: ...A 3 1 Connection Example for RTD Box Figure A 26 Half duplex operation with one RTD Box above optical design 2 FOs below design with RS485 optionally Ethernet via port A EN100 LC RS485 cable 7XV5103 7AAxx A 3 2 Connection Examples for SICAM I O Units and RTD Box Figure A 27 Connection of 2 SICAM I O Units to Port A via Y cabel up to 2 SICAM I O Units connectable 1 Y Cabel 7KE6000 8GD00 0BA2 2 RJ45...

Page 441: ...Examples SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 441 Figure A 28 Connection of 2 SICAM I O units and 1 RTD box via Y cable up to 2 SICAM I O units connect able 1 Y cabel 7KE6000 8GD00 0BA2 2 RJ45 cabel ...

Page 442: ...he knee point voltage and other transformer classes A 4 1 Accuracy limiting factors Effective and Rated Accuracy Limiting Factor Calculation example according to IEC 60044 1 Required minimum effective accuracy limiting factor but at least 20 with KALF Minimum effective accuracy limiting factor 50 2PU Primary pickup value of the high current element IpNom Primary nominal transformer current Resulti...

Page 443: ...4 1 Accuracy limiting factors with KSSC KALF TP depending on power system and specified closing sequence with Vk Knee point voltage RCt Internal burden resistance RBN Nominal burden resistance IsNom Secondary nominal transformer current KALF Rated accuracy limiting factor Vs t max Sec terminal voltage at 20 IpNom Val Sec magnetization limit voltage K Dimensioning factor KSSC Factor symmetr Rated f...

Page 444: ...g on neutral grounding and function operating prin ciple For extremely small ground fault currents it may become necessary to correct the angle at the device see func tion description of sensitive ground fault detection Neutral point isolated resonant grounded high resistance ground ed Function directional Class 1 Class 1 Class 1 Function non directional Class 3 Class 1 Class 3 ...

Page 445: ...IP 511 Relay GENERAL TRIP command LED2 50 51 Ph A PU 1762 50 51 Phase A picked up LED3 50 51 Ph B PU 1763 50 51 Phase B picked up LED4 50 51 Ph C PU 1764 50 51 Phase C picked up LED5 50N 51NPickedup 1765 50N 51N picked up LED6 Failure Σ I 162 Failure Current Summation Fail I balance 163 Failure Current Balance Fail Ph Seq I 175 Failure Phase Sequence Current LED7 Not configured 1 No Function confi...

Page 446: ... up 2695 67N 67N TOC picked up LED6 Failure Σ I 162 Failure Current Summation Fail I balance 163 Failure Current Balance Fail V balance 167 Failure Voltage Balance Fail Ph Seq I 175 Failure Phase Sequence Current Fail Ph Seq V 176 Failure Phase Sequence Voltage VT brk wire 253 Failure VT circuit broken wire LED7 Not configured 1 No Function configured LED8 Brk OPENED Breaker OPENED Binary Input De...

Page 447: ...ailure Σ I 162 Failure Current Summation Fail I balance 163 Failure Current Balance Fail V balance 167 Failure Voltage Balance Fail Ph Seq I 175 Failure Phase Sequence Current Fail Ph Seq V 176 Failure Phase Sequence Voltage VT brk wire 253 Failure VT circuit broken wire BO5 Relay PICKUP 501 Relay PICKUP Binary Output Default function Function No Description BO6 not pre assigned BO7 not pre assign...

Page 448: ...ice type The start page of the default display appearing after startup of the device can be selected in the device data via parameter 640 Start image DD for the 6 line display of 7SK80 Figure A 29 Default display of the 7SK80 for models with V without extended measured values With the V0 IO ϕ measurement the measured ground current IN2 is displayed under N and the ground current IN or INs under Ns...

Page 449: ...EC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 449 Figure A 30 Default display of 7SK80 for models with V with extended measured values Figure A 31 Default display of the 7SK80 for models without V and extended measured values ...

Page 450: ...splay of the 7SK80 for models without V with extended measured values Spontaneous Fault Display After a fault has occurred the most important fault data are automatically displayed after general device pickup in the order shown in the picture below Figure A 33 Representation of spontaneous messages on the device display ...

Page 451: ...s Yes Yes Time synchronization Yes Yes Yes Yes Yes Yes Yes Messages with time stamp Yes Yes Yes Yes Yes Yes Yes Commissioning aids Data transmission stop Yes Yes Yes No No No No Creating test messages Yes Yes Yes No No No No Physical mode Asynchro nous Asynchro nous Synchro nous Asynchro nous Asynchronous Transmission mode cyclic event cyclic event cyclic event cyclically cyclic cyclically event c...

Page 452: ...130 S Gnd F Dir Ch cos ϕ sin ϕ V0 I0 ϕ mea cos ϕ sin ϕ sens Ground fault dir character istic 131 Sens Gnd Fault Disabled Definite Time User Defined PU Disabled sensitive Ground fault 133 INTERM EF Disabled with Ignd with 3I0 with Ignd sens Disabled Intermittent earth fault protection 134 Dir Interm EF Disabled Enabled Disabled Dir Intermittent earth fault protec tion 140 46 Disabled TOC ANSI TOC I...

Page 453: ...6 RTD HDX 12 RTD HDX 6 RTD Eth 12 RTD Eth Int Temp Meas 6 RTD HDX Ext Temperature Input Connec tion Type 192 Cap Volt Meas NO YES NO Capacitive voltage measurement 617 ServiProt CM Disabled T103 DIGSI RTD RS485 T103 Port B usage FLEXIBLE FUNC 1 20 Flex Function 01 Flex Function 02 Flex Function 03 Flex Function 04 Flex Function 05 Flex Function 06 Flex Function 07 Flex Function 08 Flex Function 09...

Page 454: ... Selection of Measured Quantity 0 MEAS METHOD Flx Fundamental True RMS Positive seq Negative seq Zero sequence Ratio I2 I1 Fundamental Selection of Measurement Method 0 PICKUP WITH Flx Exceeding Dropping below Exceeding Pickup with 0 CURRENT Flx Ia Ib Ic In In sensitive In2 Ia Current 0 VOLTAGE Flx Please select Va n Vb n Vc n Va b Vb c Vc a Vn Vx Please select Voltage 0 POWER Flx Ia Va n Ib Vb n ...

Page 455: ... Delta VT 209 PHASE SEQ P System Data 1 A B C A C B A B C Phase Sequence 210A TMin TRIP CMD P System Data 1 0 01 32 00 sec 0 15 sec Minimum TRIP Command Dura tion 212 BkrClosed I MIN P System Data 1 1A 0 04 1 00 A 0 04 A Closed Breaker Min Current Threshold 5A 0 20 5 00 A 0 20 A 213 VT Connect 3ph P System Data 1 Van Vbn Vcn Vab Vbc VGnd Vab Vbc Vab Vbc Vx Van Vbn Vcn VT Connection three phase 214...

Page 456: ...ormal Current 262 Isc 52 P System Data 1 10 100000 A 25000 A Rated Short Circuit Breaking Current 263 OP CYCLES Isc P System Data 1 1 1000 50 Switch Cycles at Rated Short Cir Curr 264 Ix EXPONENT P System Data 1 1 0 3 0 2 0 Exponent for the Ix Method 265 Cmd via control P System Data 1 Setting options depend on configuration None 52 B Wear Open Cmd via Control Device 266 T 52 BREAKTIME P System Da...

Page 457: ... Quantity for 59 Overvolt Prot 615A OP QUANTITY 27 P System Data 1 V1 Vphph Vph n V1 Opera Quantity for 27 Undervolt Prot 640 Start image DD Device General image 1 image 2 image 3 image 4 image 5 image 6 image 1 Start image Default Display 651 ParEN100 LC blk Device General OFF ON OFF DIGSI config over EN100 LC blocked 660 IP adr 0 Prim Device General 0 255 0 IP address 0 NTP Primary 661 IP adr 1 ...

Page 458: ... Overcur 0 00 60 00 sec 0 50 sec 50 1 Time Delay 1207 51 PICKUP 50 51 Overcur 1A 0 10 4 00 A 1 00 A 51 Pickup 5A 0 50 20 00 A 5 00 A 1208 51 TIME DIAL 50 51 Overcur 0 05 3 20 sec 0 50 sec 51 Time Dial 1209 51 TIME DIAL 50 51 Overcur 0 50 15 00 5 00 51 Time Dial 1210 51 Drop out 50 51 Overcur Instantaneous Disk Emulation Disk Emulation Drop out characteristic 1211 51 IEC CURVE 50 51 Overcur Normal ...

Page 459: ...e Short Inverse Long Inverse Moderately Inv Extremely Inv Definite Inv Very Inverse ANSI Curve 1313A MANUAL CLOSE 50 51 Overcur 50N 3 instant 50N 2 instant 50N 1 instant 51N instant Inactive 50N 2 instant Manual Close Mode 1314A 50N 2 active 50 51 Overcur Always Always 50N 2 active 1315A 50N T DROP OUT 50 51 Overcur 0 00 60 00 sec 0 00 sec 50N Drop Out Time Delay 1316A 50N 3 active 50 51 Overcur A...

Page 460: ...T DROP OUT 67 Direct O C 0 00 60 00 sec 0 00 sec 67N Drop Out Time Delay 1619A ROTATION ANGLE 67 Direct O C 180 180 45 Rotation Angle of Reference Voltage 1620A 67N 2 MEASUREM 67 Direct O C Fundamental True RMS Fundamental 67N 2 measurement of 1621A 67N 1 MEASUREM 67 Direct O C Fundamental True RMS Fundamental 67N 1 measurement of 1622A 67N TOC MEASUR 67 Direct O C Fundamental True RMS Fundamental...

Page 461: ... 50Nc 3 Pickup 1909 50Nc 3 DELAY ColdLoadPickup 0 00 60 00 sec 0 00 sec 50Nc 3 Time Delay 2008 67c 3 PICKUP ColdLoadPickup 1A 1 00 35 00 A A 67c 3 Pickup 5A 5 00 175 00 A A 2009 67c 3 DELAY ColdLoadPickup 0 00 60 00 sec 0 00 sec 67c 3 Time Delay 2101 67Nc 2 PICKUP ColdLoadPickup 1A 0 05 35 00 A 7 00 A 67Nc 2 Pickup 5A 0 25 175 00 A 35 00 A 2102 67Nc 2 DELAY ColdLoadPickup 0 00 60 00 sec 0 00 sec 6...

Page 462: ... A 3117 50Ns 1 PICKUP Sens Gnd Fault 1A 0 05 35 00 A 2 00 A 50Ns 1 Pickup 5A 0 25 175 00 A 10 00 A 3118 50Ns 1 DELAY Sens Gnd Fault 0 00 320 00 sec 2 00 sec 50Ns 1 Time delay 3119 51Ns PICKUP Sens Gnd Fault 1A 0 001 1 400 A 0 100 A 51Ns Pickup 5A 0 005 7 000 A 0 500 A 3119 51Ns PICKUP Sens Gnd Fault 1A 0 05 4 00 A 1 00 A 51Ns Pickup 5A 0 25 20 00 A 5 00 A 3120 51NsTIME DIAL Sens Gnd Fault 0 10 4 0...

Page 463: ...g time after pickup de tected 3405 Vgnd 3V0 Dir Interm EF 2 0 100 0 V 20 0 V Vgnd measured 3V0 calcu lated 3406 Pickup Dir Interm EF with Vgnd 3V0 with oper dir with Vgnd 3V0 Pickup of the function 4001 FCT 46 46 Negative Seq OFF ON OFF 46 Negative Sequence Protec tion 4002 46 1 PICKUP 46 Negative Seq 1A 0 05 3 00 A 0 10 A 46 1 Pickup 5A 0 25 15 00 A 0 50 A 4003 46 1 DELAY 46 Negative Seq 0 00 60 ...

Page 464: ...old Starts Warm Starts 4308 Kτ at STOP 48 66 51M Motor 0 2 100 0 5 0 Extension of Time Constant at Stop 4309 Kτ at RUNNING 48 66 51M Motor 0 2 100 0 2 0 Extension of Time Constant at Running 4310 T MIN INHIBIT 48 66 51M Motor 0 2 120 0 min 6 0 min Minimum Restart Inhibit Time 4311 ROTOR OVERLOAD 48 66 51M Motor ON OFF Alarm Only ON Rotor Overload Protection 4401 Load Jam Prot 48 66 51M Motor OFF O...

Page 465: ...Superv OFF Solid grounded Coil gnd isol OFF Fuse Fail Monitor 5302 FUSE FAIL 3Vo Measurem Superv 10 100 V 30 V Zero Sequence Voltage 5303 FUSE FAIL RESID Measurem Superv 1A 0 10 1 00 A 0 10 A Residual Current 5A 0 50 5 00 A 0 50 A 5308A FFM Idiff 3ph Measurem Superv 1A 0 05 1 00 A 0 10 A Differential Current Threshold 3phase 5A 0 25 5 00 A 0 50 A 5310 BLOCK PROT Measurem Superv NO YES YES Block pr...

Page 466: ...0 A Summated Current Monitoring Threshold 5A 0 25 10 00 A 0 50 A 8107 Σ I FACTOR Measurem Superv 0 00 0 95 0 10 Summated Current Monitoring Factor 8109 FAST Σ i MONIT Measurem Superv OFF ON ON Fast Summated Current Monitor ing 8110A T BAL V LIMIT Measurem Superv 0 100 sec 5 sec T Balance Factor for Voltage Monitor 8111A T BAL I LIMIT Measurem Superv 0 100 sec 5 sec T Current Balance Monitor 8201 F...

Page 467: ... 9016 RTD 1 STAGE 2 RTD Box 58 482 F 248 F RTD 1 Temperature Stage 2 Pickup 9021A RTD 2 TYPE RTD Box Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Not connected RTD 2 Type 9022A RTD 2 LOCATION RTD Box Oil Ambient Winding Bearing Other Other RTD 2 Location 9023 RTD 2 STAGE 1 RTD Box 50 250 C 100 C RTD 2 Temperature Stage 1 Pickup 9024 RTD 2 STAGE 1 RTD Box 58 482 F 212 F RTD 2 Temperature Stage 1 Pickup...

Page 468: ...rature Stage 2 Pickup 9061A RTD 6 TYPE RTD Box Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Not connected RTD 6 Type 9062A RTD 6 LOCATION RTD Box Oil Ambient Winding Bearing Other Other RTD 6 Location 9063 RTD 6 STAGE 1 RTD Box 50 250 C 100 C RTD 6 Temperature Stage 1 Pickup 9064 RTD 6 STAGE 1 RTD Box 58 482 F 212 F RTD 6 Temperature Stage 1 Pickup 9065 RTD 6 STAGE 2 RTD Box 50 250 C 120 C RTD 6 Tempe...

Page 469: ...rature Stage 2 Pickup 9101A RTD10 TYPE RTD Box Not connected Pt 100 Ω Ni 120 Ω Ni 100 Ω Not connected RTD10 Type 9102A RTD10 LOCATION RTD Box Oil Ambient Winding Bearing Other Other RTD10 Location 9103 RTD10 STAGE 1 RTD Box 50 250 C 100 C RTD10 Temperature Stage 1 Pickup 9104 RTD10 STAGE 1 RTD Box 58 482 F 212 F RTD10 Temperature Stage 1 Pickup 9105 RTD10 STAGE 2 RTD Box 50 250 C 120 C RTD10 Tempe...

Page 470: ...Pickup 9124 RTD12 STAGE 1 RTD Box 58 482 F 212 F RTD12 Temperature Stage 1 Pickup 9125 RTD12 STAGE 2 RTD Box 50 250 C 120 C RTD12 Temperature Stage 2 Pickup 9126 RTD12 STAGE 2 RTD Box 58 482 F 248 F RTD12 Temperature Stage 2 Pickup 9130 Module Port RTD Box Port B Port B RS485 module port for the RTD box 9131 Module Port RTD Box Port B Port B RS485 module port for the RTD box Addr Parameter Functio...

Page 471: ...ription Function Type of In for matio n Log Buffers Configurable in Matrix IEC 60870 5 103 Event Log ON OFF Trip Fault Log ON OFF Ground Fault Log ON OFF Marked in Oscill Record LED Binary Input Function Key Relay Chatter Suppression Type Information Number Data Unit General Interrogation Back Light on Light on Device General SP On Off LED BI BO Reset LED Reset LED Device General IntSP on LED BO 1...

Page 472: ...ot V Process Data SP On Off LED BI BO CB 240 181 1 Yes Error Control Voltage ErrCntr lV Process Data SP On Off LED BI BO CB 240 182 1 Yes SF6 Loss SF6 Loss Process Data SP On Off LED BI BO CB 240 183 1 Yes Error Meter Err Meter Process Data SP On Off LED BI BO CB 240 184 1 Yes Transformer Temperature Tx Temp Process Data SP On Off LED BI BO CB 240 185 1 Yes Transformer Danger Tx Danger Process Dat...

Page 473: ...ED BO 160 22 1 Yes 71 Settings Check Settings Check Device General OUT LED BO 72 Level 2 change Level 2 change Device General OUT On Off LED BO 73 Local setting change Local change Device General OUT 110 Event lost Event Lost Device General OUT_ Ev on LED BO 135 130 1 No 113 Flag Lost Flag Lost Device General OUT on m LED BO 135 136 1 Yes 125 Chatter ON Chatter ON Device General OUT On Off LED BO ...

Page 474: ... Device General OUT On Off LED BO 234 2100 27 59 blocked via operation 27 59 blk 27 59 O U Volt IntSP On Off LED BO 235 2110 BLOCK Function 00 BLOCK 00 Flx SP On Off On Off LED BI FC TN BO 235 2111 Function 00 instantaneous TRIP 00 instant Flx SP On Off On Off LED BI FC TN BO 235 2112 Function 00 Direct TRIP 00 Dir TRIP Flx SP On Off On Off LED BI FC TN BO 235 2113 Function 00 BLOCK TRIP Time Dela...

Page 475: ...O 135 229 1 Yes 301 Power System fault Pow Sys Flt Device General OUT On Off On Off 135 231 2 Yes 302 Fault Event Fault Event Device General OUT on 135 232 2 Yes 303 sensitive Ground fault sens Gnd flt Device General OUT On Off 320 Warn Limit of Memory Data ex ceeded Warn Mem Data Device General OUT On Off LED BO 321 Warn Limit of Memory Parameter exceeded Warn Mem Para Device General OUT On Off L...

Page 476: ...SP 511 Relay GENERAL TRIP command Relay TRIP P System Data 2 OUT ON m LED BO 150 161 2 Yes 533 Primary fault current Ia Ia P System Data 2 VI On Off 150 177 4 No 534 Primary fault current Ib Ib P System Data 2 VI On Off 150 178 4 No 535 Primary fault current Ic Ic P System Data 2 VI On Off 150 179 4 No 545 Time from Pickup to drop out PU Time Device General VI 546 Time from Pickup to TRIP TRIP Tim...

Page 477: ...d Fault VI On Off 1266 Earth current absolute Value IEE Sens Gnd Fault VI On Off 1267 Displacement Voltage VGND 3Vo VGND 3Vo Sens Gnd Fault VI On Off 1271 Sensitive Ground fault pick up Sens Gnd Pickup Sens Gnd Fault OUT LED BO 151 171 1 Yes 1272 Sensitive Ground fault picked up in Ph A Sens Gnd Ph A Sens Gnd Fault OUT On Off on On Off LED BO 160 48 1 Yes 1273 Sensitive Ground fault picked up in P...

Page 478: ... Winding O L 49 Th Overload OUT On Off LED BO 167 17 1 Yes 1521 49 Thermal Overload TRIP 49 Th O L TRIP 49 Th Overload OUT on m LED BO 167 21 2 Yes 1580 49 Reset of Thermal Overload Image RES 49 Image 49 Th Overload SP On Off LED BI BO 1581 49 Thermal Overload Image reset 49 Image res 49 Th Overload OUT On Off LED BO 1704 BLOCK 50 51 BLK 50 51 50 51 Overcur SP LED BI BO 1714 BLOCK 50N 51N BLK 50N ...

Page 479: ...791 50 N 51 N TRIP 50 N 51 N TRIP 50 51 Overcur OUT on m LED BO 160 68 2 No 1800 50 2 picked up 50 2 picked up 50 51 Overcur OUT On Off LED BO 60 75 2 Yes 1804 50 2 Time Out 50 2 TimeOut 50 51 Overcur OUT LED BO 60 49 2 Yes 1805 50 2 TRIP 50 2 TRIP 50 51 Overcur OUT on m LED BO 160 91 2 No 1810 50 1 picked up 50 1 picked up 50 51 Overcur OUT On Off LED BO 60 76 2 Yes 1814 50 1 Time Out 50 1 TimeOu...

Page 480: ...LoadPickup OUT On Off On Off LED BO 60 245 1 Yes 1996 Cold Load Pickup is RUNNING CLP running ColdLoadPickup OUT On Off LED BO 60 246 1 Yes 1997 Dynamic settings are ACTIVE Dyn set ACTIVE ColdLoadPickup OUT On Off LED BO 60 247 1 Yes 2603 67N 3 TRIP 67N 3 TRIP 67 Direct O C OUT on LED BO 2605 67N 3 is BLOCKED 67N 3 BLOCKED 67 Direct O C OUT On Off On Off LED BO 2606 67 3 is BLOCKED 67 3 BLOCKED 67...

Page 481: ... picked up 67N picked up 67 Direct O C OUT On Off LED BO 63 54 2 Yes 2696 67 67N TRIP 67 67N TRIP 67 Direct O C OUT on m LED BO 63 55 2 Yes 2697 67 3 picked up 67 3 picked up 67 Direct O C OUT On Off LED BO 2698 67N 3 picked up 67N 3 picked up 67 Direct O C OUT On Off LED BO 2699 67 3 Time Out 67 3 Time Out 67 Direct O C OUT LED BO 2700 67N 3 Time Out 67N 3 Time Out 67 Direct O C OUT LED BO 4601 5...

Page 482: ...BO 70 149 2 Yes 5171 46 Disk emulation picked up 46 Dsk pickedup 46 Negative Seq OUT LED BO 5203 BLOCK 81O U BLOCK 81O U 81 O U Freq SP On Off LED BI BO 70 176 1 Yes 5206 BLOCK 81 1 BLOCK 81 1 81 O U Freq SP On Off LED BI BO 70 177 1 Yes 5207 BLOCK 81 2 BLOCK 81 2 81 O U Freq SP On Off LED BI BO 70 178 1 Yes 5208 BLOCK 81 3 BLOCK 81 3 81 O U Freq SP On Off LED BI BO 70 179 1 Yes 5209 BLOCK 81 4 BL...

Page 483: ...27 59 O U Volt OUT On Off LED BO 74 34 2 Yes 6537 27 2 Undervoltage picked up 27 2 picked up 27 59 O U Volt OUT On Off LED BO 74 37 2 Yes 6538 27 2 Undervoltage PICKUP w curr superv 27 2 PU CS 27 59 O U Volt OUT On Off LED BO 74 38 2 Yes 6539 27 1 Undervoltage TRIP 27 1 TRIP 27 59 O U Volt OUT on m LED BO 74 39 2 Yes 6540 27 2 Undervoltage TRIP 27 2 TRIP 27 59 O U Volt OUT on LED BO 74 40 2 Yes 65...

Page 484: ...F prot IEF block Intermit EF SP LED BI BO 152 1 1 Yes 6921 Interm E F prot is switched off IEF OFF Intermit EF OUT On Off LED BO 152 10 1 Yes 6922 Interm E F prot is blocked IEF blocked Intermit EF OUT On Off On Off LED BO 152 11 1 Yes 6923 Interm E F prot is active IEF en abled Intermit EF OUT On Off LED BO 152 12 1 Yes 6924 Interm E F detection stage Iie IIE Fault det Intermit EF OUT LED BO 6925...

Page 485: ...LED BO 60 84 2 Yes 7560 67N 1 InRush picked up 67N 1 InRushPU 50 51 Overcur OUT On Off LED BO 60 85 2 Yes 7561 67 TOC InRush picked up 67 TOC InRushPU 50 51 Overcur OUT On Off LED BO 60 86 2 Yes 7562 67N TOC InRush picked up 67N TOCInRushPU 50 51 Overcur OUT On Off LED BO 60 87 2 Yes 7563 BLOCK InRush BLOCK InRush 50 51 Overcur SP LED BI BO 7564 Ground InRush picked up Gnd InRush PU 50 51 Overcur ...

Page 486: ...cs VI 10042 Startup Voltage 3 Volt Mot Statistics VI 10043 Startup Duration 4 Dur Mot Statistics VI 10044 Startup Current 4 Cur Mot Statistics VI 10045 Startup Voltage 4 Volt Mot Statistics VI 10046 Startup Duration 5 Dur Mot Statistics VI 10047 Startup Current 5 Cur Mot Statistics VI 10048 Startup Voltage 5 Volt Mot Statistics VI 10080 Error Extension I O Error Ext I O Device General OUT On Off L...

Page 487: ...2 RTD 7 Temperature stage 1 picked up RTD 7 St 1 p up RTD Box OUT On Off LED BO 14173 RTD 7 Temperature stage 2 picked up RTD 7 St 2 p up RTD Box OUT On Off LED BO 14181 Fail RTD 8 broken wire shorted Fail RTD 8 RTD Box OUT On Off LED BO 14182 RTD 8 Temperature stage 1 picked up RTD 8 St 1 p up RTD Box OUT On Off LED BO 14183 RTD 8 Temperature stage 2 picked up RTD 8 St 2 p up RTD Box OUT On Off L...

Page 488: ...Phase C mechan TRIP C Statistics VI 16014 Sum Squared Current Integral Phase A ΣI 2t A Statistics VI 16015 Sum Squared Current Integral Phase B ΣI 2t B Statistics VI 16016 Sum Squared Current Integral Phase C ΣI 2t C Statistics VI 16018 Threshold Sum Squa Curr Int exceeded Thresh ΣI 2t SetPoint Stat OUT On Off LED BO 16019 52 Breaker Wear Start Criteria 52 Wear start P System Data 2 SP On Off LED ...

Page 489: ...I 31008 Q8 operationcounter Q8 OpCnt Control Device VI No Description Function Type of In for matio n Log Buffers Configurable in Matrix IEC 60870 5 103 Event Log ON OFF Trip Fault Log ON OFF Ground Fault Log ON OFF Marked in Oscill Record LED Binary Input Function Key Relay Chatter Suppression Type Information Number Data Unit General Interrogation ...

Page 490: ...Fail I balance Fail V balance Fail Ph Seq I Fail Ph Seq V Fail RTD Box 1 Fail RTD Box 2 Fail RTD int 161 Fail I Superv 162 163 Failure Σ I Fail I balance 171 Fail Ph Seq 175 176 Fail Ph Seq I Fail Ph Seq V 501 Relay PICKUP 1517 5159 5165 5166 6821 10025 1761 2691 1224 1221 1215 49 Winding O L 46 2 picked up 46 1 picked up 46 TOC pickedup 48 TRIP Load Jam pickup 50 N 51 N PU 67 67N pickedup 50Ns 1 ...

Page 491: ...ement CFC 641 P active power P Measurement 134 157 No 9 12 CFC 642 Q reactive power Q Measurement 134 157 No 9 13 CFC 644 Frequency Freq Measurement 134 157 No 9 5 CFC 645 S apparent power S Measurement CFC 661 Threshold of Restart Inhibit Θ REST Measurement CFC 680 Angle Va Ia Phi A Measurement CFC 681 Angle Vb Ib Phi B Measurement CFC 682 Angle Vc Ic Phi C Measurement CFC 701 Resistive ground cu...

Page 492: ...861 Vb n Min Vb nMin Min Max meter CFC 862 Vb n Max Vb nMax Min Max meter CFC 863 Vc n Min Vc nMin Min Max meter CFC 864 Vc n Max Vc nMax Min Max meter CFC 865 Va b Min Va bMin Min Max meter CFC 867 Va b Max Va bMax Min Max meter CFC 868 Vb c Min Vb cMin Min Max meter CFC 869 Vb c Max Vb cMax Min Max meter CFC 870 Vc a Min Vc aMin Min Max meter CFC 871 Vc a Max Vc aMax Min Max meter CFC 872 V neut...

Page 493: ...CFC 1075 Temperature of RTD 8 Θ RTD 8 Measurement 134 146 No 9 8 CFC 1076 Temperature of RTD 9 Θ RTD 9 Measurement 134 146 No 9 9 CFC 1077 Temperature of RTD10 Θ RTD10 Measurement 134 146 No 9 10 CFC 1078 Temperature of RTD11 Θ RTD11 Measurement 134 146 No 9 11 CFC 1079 Temperature of RTD12 Θ RTD12 Measurement 134 146 No 9 12 CFC 16004 Threshold Sum Current Exponentiation ΣI x SetPoint Stat CFC 16...

Page 494: ...Appendix A 11 Measured Values SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 494 ...

Page 495: ...m Description E50417 H1176 C151 A1 2 SIPROTEC DIGSI Start UP E50417 G1176 C152 A2 3 DIGSI CFC Manual E50417 H1176 C098 A5 4 SIPROTEC SIGRA 4 Manual E50417 H1176 C070 A1 5 Additional description for the protection of explosion protected motors of protection type increased safety e C53000 B1174 C170 ...

Page 496: ...Literature SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 496 ...

Page 497: ... bytes BP_xx Bit pattern indication Bitstring Of x Bit x designates the length in bits 8 16 24 or 32 bits C_xx Command without feedback CF_xx Command with feedback CFC Continuous Function Chart CFC is a graphics editor with which a program can be created and configured by using ready made blocks CFC blocks Blocks are parts of the user program delimited by their function their structure or their pu...

Page 498: ...ch a con tainer Control display The image which is displayed on devices with a large graphic display after pressing the control key is called control display It contains the switchgear that can be controlled in the feeder with status display It is used to perform switching operations Defining this diagram is part of the configuration Data pane The right hand area of the project window displays the...

Page 499: ...and moved from one data area to another Electromagnetic compatibility Electromagnetic compatibility EMC is the ability of an electrical apparatus to function fault free in a specified environment without influencing the environment unduly EMC Electromagnetic compatibility ESD protection ESD protection is the total of all the means and measures used to protect electrostatic sensitive devices ExBPxx...

Page 500: ... is sampled This information is used to update the system end process image The current process state can also be sampled after a data loss by means of a GI GOOSE message GOOSE messages Generic Object Oriented Substation Event in accordance with IEC 61850 are data pack ages that are transmitted cyclically and event controlled via the Ethernet communication system They serve for direct information ...

Page 501: ...and sub modules using ModPara has been completed This data is split up into several files One file contains details about the fundamental project structure This also includes for example information detailing which fields exist in this project This file is called a HV project description file ID Internal double point indication Double point indication ID_S Internal double point indication intermed...

Page 502: ...bject The type and scope of the information exchanged among the users is also stored in this object IRIG B Time signal code of the Inter Range Instrumentation Group IS Internal single point indication Single point indication IS_F Internal indication fleeting Fleeting indication Single point indication ISO 9001 The ISO 9000 ff range of standards defines measures used to ensure the quality of a prod...

Page 503: ... connection This object type contains information on both partners of a modem connection the local modem and the remote modem Modem profile A modem profile consists of the name of the profile a modem driver and may also comprise several initialization commands and a user address You can create several modem profiles for one physical modem To do so you need to link various initialization commands o...

Page 504: ...EC 4 device Phone book User addresses for a modem connection are saved in this object type PMV Pulse metered value Process bus Devices featuring a process bus interface can communicate directly with the SICAM HV modules The process bus interface is equipped with an Ethernet module PROFIBUS PROcess FIeld BUS the German process and field bus standard as specified in the standard EN 50170 Volume 2 PR...

Page 505: ...odem Setting parameters General term for all adjustments made to the device Parameterization jobs are executed by means of DIGSI or in some cases directly on the device SI Single point indication SI_F Single point indication fleeting Transient information Single point indication SICAM PAS Power Automation System Substation control system The range of possible configurations spans from integrated s...

Page 506: ...t may well differ from the device data of the source object However all variants derived from the source object have the same VD address as the source object For this reason they always correspond to the same real SIPROTEC 4 device as the source object Objects of type SIPROTEC 4 variant have a variety of uses such as documenting different operating states when entering parameter settings of a SIPR...

Page 507: ...individual participating devices are called users VD A VD Virtual Device includes all communication objects and their properties and states that are used by a communication user through services A VD can be a physical device a module of a device or a software module VD address The VD address is assigned automatically by DIGSI Manager It exists only once in the entire project and thus serves to ide...

Page 508: ...Glossary SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 508 ...

Page 509: ...ioning aids 412 Communication interfaces 352 Constructive designs 358 Coolant temperature 155 Cross Blocking 73 Current Balance Monitoring 165 Current inputs 350 Current Symmetry Monitoring 167 D Definite time overcurrent protection 360 Determination of Ground faulted Phase 186 192 Device Specific CFC Blocks 404 Direct voltage 351 Direction Check with Load Current 340 Directional intermittent grou...

Page 510: ...ion 362 L Limits for CFC blocks 405 Limits for user defined functions 405 Load jam protection 387 Local measured value monitoring 410 Long term mean values 409 M Malfunction responses of monitoring equipment 182 Measured value monitoring 164 Measuring voltage failure detection 169 Mechanical tests 356 Min max memory 409 Minimum Inhibit Time 135 Monitoring of the Circuit Breaker Auxiliary Contacts ...

Page 511: ... Termination 324 Test system interface 328 Test Voltage transformer miniature circuit breaker VT mcb 338 Thermal overload protection 389 Thermal replica 154 Thresholds for temperature indications 402 Time allocation 410 Time synchronization 412 Total Time 136 Triggering Oscillographic Recording 347 Trip circuit supervision 178 411 Trip Close Tests for the Configured Operating Devices 346 Tripping ...

Page 512: ...Index SIPROTEC 7SK80 Manual E50417 G1140 C344 A5 Release date 11 2012 512 ...

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