Arcteq AQ-T256 Instruction Manual Download Page 3

Page: 3 / 309

Table of contents

tion ..................................................................................................................

.................................................................................................................. 66

1.1 Version 2 revision notes ......................................................................................................... 6

1.2 Version 1 revision notes ......................................................................................................... 8

tions ...............................................................................................................................

............................................................................................................................... 99

3 General

3 General......................................................................................................................................

...................................................................................................................................... 11

4 IED user int

4 IED user interface

erface.......................................................................................................................

....................................................................................................................... 12

4.1 Panel structure .................................................................................................................... 12

4.1.1 Local panel structure ................................................................................................. 12

4.2 Configuring user levels and their passwords......................................................................... 13

5 F

5 Functions

unctions ...................................................................................................................................

................................................................................................................................... 15

5.1 Functions included in AQ-T256............................................................................................ 15

5.2 Measurements..................................................................................................................... 16

5.2.1 Current measurement and scaling in differential applications ..................................... 16

5.2.2 Frequency tracking and scaling ................................................................................. 27

5.3 Protection functions ............................................................................................................. 30

5.3.1 General properties of a protection function ................................................................ 30

5.3.2 Non-directional overcurrent protection (I>; 50/51)...................................................... 39

5.3.3 Non-directional earth fault protection (I0>; 50N/51N)................................................. 46

5.3.4 Negative sequence overcurrent/ phase current reversal/ current unbalance protection

(I2>; 46/46R/46L)............................................................................................................... 51

5.3.5 Harmonic overcurrent protection (Ih>; 50H/51H/68H)................................................ 57

5.3.6 Circuit breaker failure protection (CBFP; 50BF/52BF) ................................................ 64

5.3.7 Low-impedance or high-impedance restricted earth fault/ cable end differential

protection (I0d>; 87N) ........................................................................................................ 79

5.3.8 Transformer status monitoring.................................................................................... 88

5.3.9 Transformer thermal overload protection (TT>; 49T) .................................................. 94

5.3.10 Generator/transformer differential protection (Idb>/Idi>/I0dHV>/I0dLV>; 87T/87N/

87G) ................................................................................................................................ 103

5.3.11 Resistance temperature detectors ......................................................................... 142

5.3.12 Arc fault protection (IArc>/I0Arc>; 50Arc/50NArc) ................................................. 149

5.3.13 Programmable stage (PGx>/<; 99) ........................................................................ 157

5.4 Control functions ............................................................................................................... 172

5.4.1 Setting group selection............................................................................................ 172

5.4.2 Object control and monitoring.................................................................................. 180

5.4.3 Indicator object monitoring ...................................................................................... 193

5.4.4 Milliampere output control ....................................................................................... 196

5.4.5 Programmable control switch .................................................................................. 198

5.4.6 Analog input scaling curves ..................................................................................... 199

5.4.7 Logical outputs........................................................................................................ 201

5.4.8 Logical inputs .......................................................................................................... 202

5.5 Monitoring functions .......................................................................................................... 203

5.5.1 Current transformer supervision .............................................................................. 203

5.5.2 Circuit breaker wear ................................................................................................ 214

5.5.3 Total harmonic distortion (THD) ............................................................................... 219

5.5.4 Disturbance recorder (DR) ...................................................................................... 223

5.5.5 Measurement recorder ............................................................................................ 234

5.5.6 Measurement value recorder ................................................................................... 239

tion....................................................................................................................

.................................................................................................................... 243

243

6.1 Communication protocols .................................................................................................. 243

6.1.1 NTP......................................................................................................................... 243

6.1.2 Modbus/TCP and Modbus/RTU ............................................................................... 243

6.1.3 Modbus I/O ............................................................................................................. 244

6.1.4 IEC 61850............................................................................................................... 245

6.1.5 GOOSE................................................................................................................... 246

6.1.6 IEC 103................................................................................................................... 247

Q-T256

-T256

Instruction manual

Version: 2.06

Summary of Contents for AQ-T256

Page 1: ...AQ T256 Transformer protection IED Instruction manual...

Page 2: ......

Page 3: ...earth fault cable end differential protection I0d 87N 79 5 3 8 Transformer status monitoring 88 5 3 9 Transformer thermal overload protection TT 49T 94 5 3 10 Generator transformer differential prote...

Page 4: ...iary voltage 285 9 1 2 2 CPU communication ports 286 9 1 2 3 CPU digital inputs 287 9 1 2 4 CPU digital outputs 288 9 1 3 Option cards 289 9 1 3 1 Digital input module 289 9 1 3 2 Digital output modul...

Page 5: ...er wear monitoring 301 9 2 3 3 Total harmonic distortion 301 9 2 3 4 Disturbance recorder 302 9 2 3 5 Event logger 302 9 3 Tests and environmental 302 10 Or 10 Ordering inf dering informa ormation tio...

Page 6: ...e warranty obligations of the manufacturer Arcteq Relays Ltd The manufacturer expressly disclaims any and all liability for any damages and or losses caused due to a failure to comply with the instruc...

Page 8: ...ing Added current measurement side selection description to functions with such feature Added General menu description Revision 2 01 Date 6 11 2019 Changes Added description for LED test and button te...

Page 9: ...d logical input and logical output function descriptions Additions to Abbreviations chapter Added button test description to Local panel structure chapter Added note to Configuring user levels and pas...

Page 10: ...meter descriptions for digital inputs digital outputs logical inputs logical outputs and GOOSE inputs Arc point sensor HSO1 and HSO2 position fixed Added spare part codes and compatibilities to option...

Page 11: ...nt transformer supervision DG Distributed generation DHCP Dynamic Host Configuration Protocol DI Digital input DO Digital output DOL Direct on line DR Disturbance recorder DT Definite time FF Fundamen...

Page 12: ...S Root mean square RSTP Rapid Spanning Tree Protocol RTD Resistance temperature detector RTU Remote terminal unit SCADA Supervisory control and data acquisition SG Setting group SOTF Switch on to faul...

Page 13: ...device manuals AQ T256 is a transformer protection IED with a sophisticated and easy to use differential protection function The AQ T256 transformer protection IED provides both low side and high sid...

Page 14: ...with programmable legend texts 3 Three 3 object control buttons Choose the controllable object with the Ctrl Ctrl button and control the breaker or other object with the I I and the O O buttons 4 The...

Page 15: ...utton test menu It displays all the physical buttons on the front panel Pressing any of the listed buttons marks them as tested When all buttons are marked as having been tested the device will return...

Page 16: ...evels are divided as follows User Can view any menus and settings but cannot change any settings nor operate breakers or other equipment Operator Can view any menus and settings but cannot change any...

Page 17: ...52BF Circuit breaker failure protection TRF Transformer status monitoring DIF 1 Idb Idi I0dHV I0dLV 87T 87N 87G Transformer differential protection with integrated restricted earth fault protection TO...

Page 18: ...measurement database and they are used by measurement and protection functions It is essential to understand the concept of current measurements to be able to get correct measurements Figure 5 2 1 2 C...

Page 19: ...much easier and more straightforward to configure In modern protection devices this scaling calculation is done internally after the current transformer s primary current secondary current and machin...

Page 20: ...tial calculation mode setting has to be set to Subtract Protection TrafoModule Idx 87T 87N Settings This way the direction of the measured currents are checked correctly from the relay s perspective T...

Page 21: ...tected transformer are calculated based on the values set in the Transformer characteristics menu Protection TrafoModule TSTAT INFO The ratio between the CT modules 1 and 2 can be set in their respect...

Page 22: ...oarse The residual current CT is connected to the first CTM directly which requires the use of sensitive residual current measurement settings the Residual I02 CT scaling settings are set according to...

Page 23: ...culation mode has to be set to Add Protection TrafoModule Idx 87T 87N Settings The difference with the first application is that here the CTs point towards the protected object instead of pointing thr...

Page 24: ...2 are pointing at each other The nominal currents on both the HV and the LV sides are the same as in Application 1 However the CTs secondary current levels have been changed to 2 A on the HV side and...

Page 25: ...The default setting is for the positive current to flow from connector 5 to connector 6 with the secondary currents starpoint pointing towards the line CT scaling factor P S A relay feedback value th...

Page 26: ...00 000 0 001 The peak to peak current measurement in p u from each of the phase current channels Table 5 2 1 12 Primary phase current measurements Name Unit Range Step Description Primary phase curren...

Page 27: ...e calculated current channel I0 Primary residual current I0x TRMS Res curr I01 TRMS Pri A 0 000 1000000 000 0 001 The TRMS current inc harmonics up to 31st measurement from the primary residual curren...

Page 28: ...0 001 The primary measurement from the calculated zero sequence current Table 5 2 1 21 Secondary sequence current measurements Name Unit Range Step Description Secondary positive sequence current Sec...

Page 29: ...or to the fixed user defined frequency sampling mode The benefit of frequency tracking is that the measurements are within a pre defined accuracy range even when the fundamental frequency of the power...

Page 30: ...surement mode to Tracking Measurement Frequency Smpl mode so the relay adjusts the frequency itself The frequency readings are wrong In Tracking mode the relay may interpret the frequency incorrectly...

Page 31: ...al frequency until 0 1800 000s 0 005s 0 100s Defines how long the nominal frequency is used after the tracking has started This setting is only valid when the Sampling mode setting is set to Tracking...

Page 32: ...isplays which voltage channel frequency reference is used by system set voltage channel SS2f meas from 0 Not measurable 1 Fast Ref U4 Displays if U4 channel frequency reference is measurable or not wh...

Page 33: ...un in a completely digital environment with a protection CPU microprocessor which also processes the analog signals transformed into the digital form A AQ Q T256 T256 Instruction manual Version 2 06 A...

Page 34: ...tage value before the function takes action The function constantly calculates the ratio between the pick up parameter set by the user and the measured magnitude Xm The reset ratio of 97 is built into...

Page 35: ...tion causes an HMI display event and a time stamped blocking event with information of the startup current values and its fault type to be issued The blocking signal can also be tested in the commissi...

Page 36: ...or the time counter The selection is made between dependent IDMT and independent DT characteristics Definite min operating time delay 0 000 1800 000s 0 005s 0 040s When the Delay type parameter is set...

Page 37: ...y the Param option allows the tuning of the constants A B and C which then allows the setting of characteristics following the same formula as the IEEE curves mentioned here This setting is active and...

Page 38: ...es The setting parameters and their ranges are documented in the chapters of the respective function blocks Table 5 3 1 27 Inverse operating time formulas for nonstandard characteristics RI type RD ty...

Page 39: ...of the timer Op Time calculation reset after release time 0 No 1 Yes 1 Yes Operating timer resetting characteristics selection When active the operating time counter is reset after a set release time...

Page 40: ...ck up release delay counter is reset at signal drop off Figure 5 3 1 16 Delayed pick up release delay counter value is held during the release time A AQ Q T256 T256 Instruction manual Version 2 06 38...

Page 41: ...ion Normal Start Trip Blocked etc in the Info page of the function NO NOTE TE When Stage forcing is enabled protection functions will also change state through user input Injected currents voltages al...

Page 42: ...ion function is the three pole operation The inputs for the function are the following operating mode selections setting parameters digital inputs and logic signals measured and pre processed current...

Page 43: ...peak measurement of phase L3 C current 5ms The selection of the used AI channel is made with a setting parameter In all possible input channel variations the pre fault condition is presented with a 2...

Page 44: ...s Live Edit mode is active Table 5 3 2 32 Information displayed by the function Name Range Step Description I LN behaviour 1 On 2 Blocked 3 Test 4 Test Blocked 5 Off Displays the mode of NOC block Thi...

Page 45: ...rocess the situation further If the START function has been activated before the blocking signal it resets and the release time characteristics are processed similarly to when the pick up signal is re...

Page 46: ...fers four 4 independent stages the events are segregated for each stage operation The events triggered by the function are recorded with a time stamp and with process data values Table 5 3 2 34 Event...

Page 47: ...A Trip ON NOC2 Phase A Trip OFF NOC2 Phase B Trip ON NOC2 Phase B Trip OFF NOC2 Phase C Trip ON NOC2 Phase C Trip OFF NOC3 Start ON NOC3 Start OFF NOC3 Trip ON NOC3 Trip OFF NOC3 Block ON NOC3 Block...

Page 48: ...rrent Start Trip current Start 200ms current 0 ms 1800s Setting group 1 8 active 5 3 3 Non directional earth fault protection I0 50N 51N The non directional earth fault function is used for instant an...

Page 49: ...selections setting parameters digital inputs and logic signals measured and pre processed current magnitudes The function s outputs are START TRIP and BLOCKED signals which can be used for direct I O...

Page 50: ...f the used AI channel is made with a setting parameter In all possible input channel variations the pre fault condition is presented with a 20 ms averaged history value from 20 ms from a START or TRIP...

Page 51: ...n 2 Blocked 3 Test 4 Test Blocked 5 Off Displays the mode of NEF block This parameter is visible only when Allow setting of individual LN mode is enabled in General menu I0 condition 0 Normal 1 Start...

Page 52: ...up current values and its fault type to be issued The blocking signal can also be tested in the commissioning phase by a software switch signal when the relay s testing mode Enable stage forcing is ac...

Page 53: ...ayed unbalanced network protection and for detecting broken conductors The number of stages in the function depends on the relay model The operating decisions are based on negative and positive sequen...

Page 54: ...The function generates general time stamped ON OFF events to the common event buffer from each of the three 3 output signals In instant operating mode the function outputs START and TRIP events simult...

Page 55: ...s used by the function Visible if the unit has more than one current measurement module Measured magnitude 1 I2pu 2 I2 I1 1 I2pu Defines whether the ratio between the positive and the negative sequenc...

Page 56: ...I display event and a time stamped blocking event with information of the startup current values and its fault type to be issued The blocking signal can also be tested in the commissioning phase by a...

Page 57: ...cs through the application The default setting is a 60 ms delay the time calculation is held during the release time In the release delay option the operating time counter calculates the operating tim...

Page 58: ...N CUB4 Trip OFF CUB4 Block ON CUB4 Block OFF The function registers its operation into the last twelve 12 time stamped registers The register of the function records the ON event process data for STAR...

Page 59: ...situation lasts longer the TRIP signal can be used on other actions as time delayed The IDMT operation supports both IEC and ANSI standard time delays as well as custom parameters The operational logi...

Page 60: ...harmonic component or to the harmonic component percentage content compared to the RMS values A 20 ms averaged value of the selected magnitude is used for pre fault data registering Table 5 3 5 49 Mea...

Page 61: ...ent components Fundamental 2nd harmonic 3rd harmonic 4th harmonic 5th harmonic 6th harmonic 7th harmonic 9th harmonic 11th harmonic 13th harmonic 15th harmonic 17th harmonic 19th harmonic 5 ms I01FFT...

Page 62: ...RT or TRIP event General settings The function can be set to monitor the ratio between the measured harmonic and either the measured fundamental component or the per unit value of the harmonic current...

Page 63: ...e pick up of the Ih function This defines the maximum allowed measured current before action from the function The function constantly calculates the ratio between the Ihset per unitor Ih IL and the m...

Page 64: ...gnal is received from the blocking matrix in the function s dedicated input If the blocking signal is not activated when the pick up element activates a START signal is generated and the function proc...

Page 65: ...vent block name Event names HOC1 Start ON HOC1 Start OFF HOC1 Trip ON HOC1 Trip OFF HOC1 Block ON HOC1 Block OFF HOC2 Start ON HOC2 Start OFF HOC2 Trip ON HOC2 Trip OFF HOC2 Block ON HOC2 Block OFF HO...

Page 66: ...put relay control signal The blocking signal and the setting group selection control the operating characteristics of the function during normal operation i e the user or user defined logic can change...

Page 67: ...S measurement of phase L3 C current 5ms I01RMS RMS measurement of residual input I01 5ms I02RMS RMS measurement of residual input I02 5ms I0Calc Calculated residual current from the phase current inpu...

Page 68: ...rement side 1 Side 1 2 Side 2 1 Side 1 Defines which current measurement module is used by the function Pick up The setting parameters Iset and I0set control the pick up and the activation of the curr...

Page 69: ...nt The pick up activation of the function is not directly equal to the START signal generation of the function The START signal is allowed if the blocking condition is not active There is no delay bet...

Page 70: ...assed in order for the blocking to activate in time Operating time characteristics The operating timers behavior during a function can be set depending on the application The same pick up signal start...

Page 71: ...vailable The TRIP signal is normally wired to the breaker s trip coil from the device s trip output The retrip is wired from its own device output contact in parallel with the circuit breaker s redund...

Page 72: ...is not monitored in this configuration Therefore if the current is not reduced below the setting limit a RETRIP signal is sent to the redundant trip coil If the current is not reduced within the set t...

Page 73: ...If the current is not reduced below the setting limit or the primary stage tripping signal is not reset a RETRIP signal is sent to the redundant trip coil If the retripping fails and the current is no...

Page 74: ...ns is met i e the current is above the limit or the signal is active for the duration of the set RETRIP time delay a RETRIP signal is sent to the redundant trip coil If either of the conditions is act...

Page 75: ...ost common application is when the device s trip output controls the circuit breaker trip coil while one dedicated CBFP contact controls the CBFP function Below are a few operational cases regarding t...

Page 76: ...ating time The tripping of the primary protection stage is not monitored in this configuration Therefore if the current is not reduced below the setting limit a CBFP signal is sent to the incomer brea...

Page 77: ...operating time The tripping of the primary protection stage is constantly monitored in this configuration If the current is not reduced below the setting limit or the primary stage tripping signal is...

Page 78: ...ng limit and the primary stage tripping signal is reset If either of these conditions is met i e the current is above the limit or the signal is active for the duration of the set CBFP time delay a CB...

Page 79: ...e configuration as a dedicated CBFP unit Figure 5 3 6 33 Wiring diagram when the device is configured as a dedicated CBFP unit A AQ Q T256 T256 Instruction manual Version 2 06 Arcteq Relays Ltd IM0002...

Page 80: ...ital input signal Both current and output relay monitoring can be used The counter for the CBFP signal begins when the digital input is activated If the counter is active until the CBFP counter is use...

Page 81: ...surement for transformers This function can also be used as the cable end differential function The operating principle is low impedance differential protection with bias characteristics the user can...

Page 82: ...agram of the I0d function Measured input The function block uses analog current measurement values It uses the RMS magnitude of the current measurement inputs Both calculated residual currents and mea...

Page 83: ...ile the line is energized the currently present calculated residual current is compensated to 0 This compensation only has an effect in the CED mode Operating characteristics The current dependent pic...

Page 84: ...acteristics The pick up settings can be selected via setting groups The pick up activation of the function is not directly equal to the TRIP signal generation of the function The TRIP signal is allowe...

Page 85: ...rogram cycle The blocking signal is received from the blocking matrix in the function s dedicated input If the blocking signal is not activated when the pick up element activates a TRIP signal is gene...

Page 86: ...h natural unbalance in the phase current measurement When calculating residual current from the phase currents the natural unbalance can be around 10 while the used CTs are still within the promised 5...

Page 87: ...nt the main differential protection from being tripped by faults occurring outside the protection area in some cases the function has to be disabled or its sensitivity limited to catch earth faults in...

Page 88: ...and thus inside of the protection area the function catches the fault with high sensitivity Since the measured residual current now flows in the opposite direction than in the outside fault situation...

Page 89: ...s generates events and registers from the status changes in TRIP activated and BLOCKED signals The user can select which event messages are stored in the main event buffer ON OFF or both The events tr...

Page 90: ...ansformer data and select the used transformer protection functions Settings related to the protection functions can also be edited inside each function and any changes are updated into this function...

Page 91: ...pendent on the set transformer data because the measured currents in p u are related to the transformer nominal values The following diagram presents the function s outputs in various situations Figur...

Page 92: ...nsformer status monitoring function and how they are shared by other protection functions Name Range Step Default Functions Description TRF LN mode 1 On 2 Blocked 3 Test 4 Test Blocked 5 Off 1 On Set...

Page 93: ...et is selected for the vector group setting HV side lead or lag LV 0 Lead 1 Lag 0 Lead transformer status monitoring transformer differential The selection of whether the HV side leads or lags the LV...

Page 94: ...inal current pri 0 01 50 000 00A 0 01A 0 00A Info The calculated primary current of the transformer s LV side primary current LV side nominal current sec 0 01 250 00A 0 01A 0 00A Info The calculated p...

Page 95: ...o load current limit Overloading 0 Not active 1 Active 1 0 Not active The signal is active when the measured current is between the Nominal current and the High overcurrent limits Heavy overloading HV...

Page 96: ...ion applications The thermal image for the function is calculated according to the equation described below Where t Thermal image status percentage of the maximum available thermal capacity t 1 Therma...

Page 97: ...conditions considering the prevailing conditions in the thermal replica are compensated with the ambient temperature coefficient which is constantly calculated and changing when using RTD sensor for t...

Page 98: ...set in C or F the temperature in which the manufacturer s temperature presumptions apply the temperature correction factor is 1 0 Figure 5 3 9 47 Ambient temperature coefficient calculation a three p...

Page 99: ...the two 2 output signal The time stamp resolution is 1 ms The function also provides a resettable cumulative counter for the TRIP ALARM 1 ALARM 2 INHIBIT and BLOCKED events The following figure presen...

Page 100: ...150 0 0 1 60 0 The thermal image status in the restart of the function or the device The value is given in percentages of the used thermal capacity of the protected object It is also possible to reset...

Page 101: ...the user settable ambient temperature coefficient curve This setting is visible if Ambient lin or curve is set to Set curve Amb temp k1 k10 0 01 5 00 1 00 0 01 The coefficient value for the temperatu...

Page 102: ...generated and the function does not process the situation further If the START function has been activated before the blocking signal it resets and processes the release time characteristics similarly...

Page 103: ...temperature settings have been set wrong and actually used setting is 1 0 Visible only when there is a setting fault TT Setting alarm 0 Nominal current calc ok 1 Nominal current set fault Override to...

Page 104: ...he number of times the function has activated the Alarm 2 output Restart inhibits The number of times the function has activated the Restart inhibit output Trips The number of times the function has t...

Page 105: ...10 Generator transformer differential protection Idb Idi I0dHV I0dLV 87T 87N 87G The generator transformer differential function is used for protecting the following power transformers two winding tra...

Page 106: ...t for the different types of transformers Overlooking these points when designing transformers increase the risk of costly problems with the transformer Transformer Risk level Protection Pole mounted...

Page 107: ...nt differential overcurrent and earth fault protection redundant backup overcurrent and earth fault protection tap changer protection a dedicated pressure guard Buchholz gas relay overloading protecti...

Page 108: ...ult currents such as when the fault location is close to the neutral side inside the star winding These are the main arguments for using differential protection they are sensitive their operation in i...

Page 109: ...minal voltage is 1kV and its amperage is 1 155 kA The transformer s short circuit impedance is 4 95 it is based on the transformer s final test and presents how much short circuit current the transfor...

Page 110: ...ion settings The vector group of the transformer is also important since the differential function is interested in the angle difference of the measured current vectors In this example the transformer...

Page 111: ...Figure 5 3 10 53 Yd1 transformer s internal connection in theory A AQ Q T256 T256 Instruction manual Version 2 06 Arcteq Relays Ltd IM00028 109...

Page 112: ...nd with enough difference causes a pick up and a trip However as modern differential relays do this transformation by calculating the corrected vector internally this is also just nice to know informa...

Page 113: ...Figure 5 3 10 55 Subtract formula Figure 5 3 10 56 Add formula Figure 5 3 10 57 CTs starpoints requiring the Add mode A AQ Q T256 T256 Instruction manual Version 2 06 Arcteq Relays Ltd IM00028 111...

Page 114: ...to adjust the differential stage towards the measured currents Bias calculation can be sensitive or coarse see the following formulas Figure 5 3 10 59 Average mode sensitive biasing Figure 5 3 10 60 M...

Page 115: ...settings Characteristics parts One needs to understand what the various parts of the characteristics mean in order to set the characteristics for the transformer application D Diff iffbia bias TP1 s T...

Page 116: ...rces for normal operation 1 Primary side CT measurement accuracy CTEpri In this example the primary side CTs are Class 10P which means the measurement error is 10 2 Secondary side CT measurement accur...

Page 117: ...nservative estimate of 3 as the TME value 6 Safety margin SME Conservative settings typically use a safety margin up to 5 7 Tap changer on load side TCE This example transformer has a tap changer with...

Page 118: ...ty Imeas unc from the various magnitudes inside the transformer In this example the transformer has a tap changer that affects the internal currents however its effects cannot be estimated reliably an...

Page 119: ...f differential relay this point can be set by the user If the user wants a high sensitivity TP1 can be set to 1 In since the calculated base sensitivity already factors in the tap changer effect and a...

Page 120: ...in the following calculation Next we calculate the the currents that flow in the HV and LV sides when the loading of the transformer is e g 1 5 times its rated power Therefore the LV side currents are...

Page 121: ...ntial current in the measurements even though the transformer itself does not have a fault Please note that if there is a heavy end fault causing the biasing current to increase this setting should no...

Page 122: ...ximum of the current flowing in the CTs when a bolted and symmetrical three phase fault occurs in the LV side of the transformer Based on the previous calculations we can see that the HV side maximum...

Page 123: ...sistivity in temperatures other than 20 C For example the resistivity of copper at 75 C is calculated like this With this value we can calculate the resistances per meter of the most commonly used cop...

Page 124: ...ions of the wire used in the winding Some CT manufacturers include the SCTRN value in their product documentation However as the value is only a small portion of the CT burden as a whole the wirings c...

Page 125: ...ible in normal operations while keeping the settings sensitive enough for inrush currents especially in energiszing cases Thus the setting suggestion for this Idi Pick up stage is 6 0 In 10 In for sen...

Page 126: ...Figure 5 3 10 64 Example configuration for the transformer differential function A AQ Q T256 T256 Instruction manual Version 2 06 124 Arcteq Relays Ltd IM00028...

Page 127: ...ou can also see the variations in Turnpoint 1 settings in Figures A and C it is set at 1 0 In whereas in Figures B and D it is set at 0 01 In Zero sequence compensation for external earth faults Our e...

Page 128: ...nvolved in the fault The differential earthing requires the earthing to be known if not compensated any low impedance earth fault outside the differential zone causes a differential current and possib...

Page 129: ...liminates the zero sequence effect with the following formulas No Not te e When you enable the zero sequence compensation by selecting the N or n in the transformer vector group the sensitivity to sin...

Page 130: ...tions between the average and the maximum bias current calculation as well as the option between the add and the subtract current calculation The use of these stages depends on the CTs installation di...

Page 131: ...t when the voltage is in zero crossing the steady state value of the flux is in its negative or positive maximum value In energizing situations there is no flux available at the instant the winding is...

Page 132: ...s mentioned earlier the calculated FFT value is about 50 of the peak value the third graph depicts the 2nd harmonic absolute values in amperes the fourth graph depicts the fundamental 50 Hz FFT calcul...

Page 133: ...ughly as follows In our previous example the transformer s nominal current on the HV primary side was 115 5 A with it we can count the following The graph below shows how the differential currents loo...

Page 134: ...for magnetizing is reduced as well The blocking remains active until the setting is reached after which the blocking is released for each phase separately With our example transformer the harmonic blo...

Page 135: ...former overexcited very quickly This may be caused by two things a fault in the LV side can throw off the loading and cause a temporary overvoltage or the frequency in the network decreases for some r...

Page 136: ...nsformer s primary side and the differential relay sees it as pure differential current From the third graph we can see that the differential pick up setting is reached when the voltage is approximate...

Page 137: ...and releases when the overvoltage is too heavy and the differential current is most probably over the tripping limit However one should note that the behavior of this blocking is very unpredictable i...

Page 138: ...unction s pre calculation Name Range Step Default Function Description Idx LN mode 1 On 2 Blocked 3 Test 4 Test Blocked 5 Off 1 On Set mode of DIF block This parameter is visible only when Allow setti...

Page 139: ...zag transformer status monitoring transformer differential The selection of the HV side connection Can be selected between star or zigzag and delta This selection is visible only if the option Manual...

Page 140: ...ormer status monitoring transformer differential The selection of the starpoint measurement channel for the restricted earth fault protection on the HV side This setting is only visible if the option...

Page 141: ...ics This setting is only visible if the Enable I0d REF HV side setting is enabled HV I0d Slope 1 0 01 250 00 0 01 10 00 Slope 1 of the HV side restricted earth fault differential characteristics This...

Page 142: ...88 Output signals of the transformer differential function Name Description Idb Bias Trip The TRIP output signal from the biased differential stage Idi Nobias Trip The TRIP output signal from the non...

Page 143: ...5th harmonic OFF DIF1 L2 5th harmonic ON DIF1 L2 5th harmonic OFF DIF1 L3 5th harmonic ON DIF1 L3 5th harmonic OFF DIF1 HV I0d Block ON DIF1 HV I0d Block OFF DIF1 HV I0d Trip ON DIF1 HV I0d Trip OFF...

Page 144: ...d characteristics current LV side REF maximum differential current with bias Used SG Setting group in use Ftype Detected fault type faulty phases 5 3 11 Resistance temperature detectors Resistance tem...

Page 145: ...the wanted channels are selected at Communication Protocols ModbusIO Then the user selects the measurement module from the three 3 available modules A B and C as well as the poll address Additionally...

Page 146: ...nitored module and channel as well as the monitoring and alarm setting units C or F The alarms can be enabled given a setting value in degrees and be set to trigger either above or below the setting v...

Page 147: ...C Dec F 0 Deg C 1 Deg F 0 Deg C Selects the measurement temperature scale Celsius or Fahrenheit S1 S16 Measurement Displays the measurement value in the selected temperature scale S1 S16 Sensor 0 Ok 1...

Page 148: ...unction offers sixteen 16 independent stages the events are segregated for each stage operation The events triggered by the function are recorded with a time stamp and with process data values The fun...

Page 149: ...Alarm2 OFF RTD1 S11 Alarm1 ON RTD1 S11 Alarm1 OFF RTD1 S11 Alarm2 ON RTD1 S11 Alarm2 OFF RTD1 S12 Alarm1 ON RTD1 S12 Alarm1 OFF RTD1 S12 Alarm2 ON RTD1 S12 Alarm2 OFF RTD1 S13 Alarm1 ON RTD1 S13 Alarm...

Page 150: ...Meas Invalid RTD2 S7 Meas Ok RTD2 S7 Meas Invalid RTD2 S8 Meas Ok RTD2 S8 Meas Invalid RTD2 S9 Meas Ok RTD2 S9 Meas Invalid RTD2 S10 Meas Ok RTD2 S10 Meas Invalid RTD2 S11 Meas Ok RTD2 S11 Meas Inval...

Page 151: ...lay can be avoided by using arc protection The arc protection card has a high speed output to trip signals faster as well as to extend the speed of arc protection Figure 5 3 12 77 IED equipped with ar...

Page 152: ...ping the zone are met light OR light and current but the tripping is blocked by an input I I0 Arc S1 Sensor fault I I0 Arc S2 Sensor fault I I0 Arc S3 Sensor fault I I0 Arc S4 Sensor fault The detecte...

Page 153: ...e which sensor channels are sensing which zones in this case sensor channels S1 and S2 are protecting Zone 1 Enable Light 1 of Zone 1 as well as Light 2 of Zone 2 The sensor channel S3 deals with Zone...

Page 154: ...e enabled as there are sensors connected to both Zone 2 and 3 starts Sensors connected to the channel S3 are in Zone 2 Then enable Light 3 of Zone 2 The sensor connected to the channel S2 is in Zone 3...

Page 155: ...nsors Defines the number of sensors connected to the channel channels 1 2 3 4 Channel 2 sensors Channel 3 sensors Channel 4 sensors Channel 1 sensor status 0 Sensors OK 1 Configuration fault state Dis...

Page 156: ...channel 1 trips the zone 0 Disabled 1 Enabled 0 Disabled Zone1 2 3 4 Pres 2 Enabled Pressure detected in sensor channel 2 trips the zone 0 Disabled 1 Enabled 0 Disabled Zone1 2 3 4 Pres 3 Enabled Pres...

Page 157: ...up element activates a TRIP signal is generated If the blocking signal is active when the pick up element activates a BLOCKED signal is generated and the function does not process the situation furth...

Page 158: ...1 Phase current Blocked OFF ARC1 Phase current Start ON ARC1 Phase current Start OFF ARC1 Residual current Blocked ON ARC1 Residual current Blocked OFF ARC1 Residual current Start ON ARC1 Residual cur...

Page 159: ...9 The programmable stage is a stage that the user can program to create more advanced applications either as an individual stage or together with programmable logic The relay has ten programmable stag...

Page 160: ...general behavior of the function These settings are static i e it is not possible to change them by editing the setting group Table 5 3 13 100 General settings of the function Name Range Default Desc...

Page 161: ...easier to set although it is also possible to just use the scaling factor of 1 0 and set the desired pick up limit as the primary voltage Similaryly any chosen measurement value can be scaled to the...

Page 162: ...the measured signals fulfills the comparison condition Similarly the user can set up a comparison of three values The table below presents the available modes for a three signal comparison Mode Descri...

Page 163: ...l has their own pick up setting The image below is an example of setting an analog comparison with three signals The stage will trip if Signal 1 or Signal 2 as well as Signal 3 fulfill the pick up con...

Page 164: ...in 20 ms in either direction the comparison condition is fulfilled The condition is not dependent on direction 6 Delta measval C Change o hange ov ver time er time If the measured signal changes more...

Page 165: ...9th h IL2 19th harmonic value in p u IL3 Description IL3 ff p u IL3 Fundamental frequency RMS value in p u IL3 2nd h IL3 2nd harmonic value in p u IL3 3rd h IL3 3rd harmonic value in p u IL3 4th h IL3...

Page 166: ...u I02 9th h I02 9th harmonic value in p u I02 11th h I02 11th harmonic value in p u I02 13th h I02 13th harmonic value in p u I02 15th h I02 15th harmonic value in p u I02 17th h I02 17th harmonic val...

Page 167: ...ages Description UL12Mag UL12 Primary voltage V UL23Mag UL23 Primary voltage V UL31Mag UL31 Primary voltage V Phase to neutral voltages Description UL1Mag UL1 Primary voltage V UL2Mag UL2 Primary volt...

Page 168: ...power L3 P kW QL3 Reactive power L3 Q kVar tanfiL3 Phase active power direction L3 cosfiL3 Phase reactive power direction L3 Impedance and admit Impedance and admittance Z tance ZR RX Y X YGB GB Name...

Page 169: ...e X L3 secondary Z1Pri Impedance Z L1 primary Z2Pri Impedance Z L2 primary Z3Pri Impedance Z L3 primary Z1Sec Impedance Z L1 secondary Z2Sec Impedance Z L2 secondary Z3Sec Impedance Z L3 secondary Z1A...

Page 170: ...Admittance Y L2 angle YL3Angle Admittance Y L3 angle G0Pri Conductance G0 primary mS B0Pri Susceptance B0 primary mS G0Sec Conductance G0 secondary mS B0Sec Susceptance B0 secondary mS Y0Pri Admittan...

Page 171: ...Step Default PS Pick up setting Mag calc Pick up magnitude 5 000 000 0000 5 000 000 0000 0 0001 0 01 PS Setting hysteresis Mag Setting hysteresis 0 0000 50 0000 0 0001 3 Definite operating time delay...

Page 172: ...generates events and registers from the status changes in START TRIP and BLOCKED The user can select which event messages are stored in the main event buffer ON OFF or both The events triggered by the...

Page 173: ...OFF PGS1 PS7 Trip ON PGS1 PS7 Trip OFF PGS1 PS7 Block ON PGS1 PS7 Block OFF PGS1 PS8 Start ON PGS1 PS8 Start OFF PGS1 PS8 Trip ON PGS1 PS8 Trip OFF PGS1 PS8 Block ON PGS1 PS8 Block OFF PGS1 PS9 Start...

Page 174: ...bled the setting group selector logic takes control of the setting group activations based on the logic and conditions the user has programmed The following figure presents a simplified function block...

Page 175: ...responding setting group must be enabled and the force change must be enabled Then the setting group can be set from communications or from HMI to any available group If the setting group control is a...

Page 176: ...static signal control is applied no requests with a lower priority than SG1 and SG2 will be processed Setting group 4 0 Not active 1 Active 0 Not active The selection of Setting group 4 SG4 Has the fo...

Page 177: ...ting group control one wire connection from Petersen coil status Depending on the application s requirements the setting group control can be applied either with a one wire connection or with a two wi...

Page 178: ...Figure 5 4 1 83 Setting group control two wire connection from Petersen coil status A AQ Q T256 T256 Instruction manual Version 2 06 176 Arcteq Relays Ltd IM00028...

Page 179: ...With a two wire connection the state of the Petersen coil can be monitored more securely The additional logic ensures that a single wire loss will not affect the correct setting group selection The ap...

Page 180: ...s the inverted signal NOT as well as the use of logics in setting group control One could also have SG2 be the primary SG while the ON signal would be controlled by the higher priority SG1 this way th...

Page 181: ...SGS SG8 Request ON SGS SG8 Request OFF SGS Remote Change SG Reqeuest ON SGS Remote Change SG Request OFF SGS Local Change SG Request ON SGS Local Change SG Request OFF SGS Force Change SG ON SGS Force...

Page 182: ...control can be done by local control or by remote control Local manual control can be done by relays front panel HMI or by external push buttons connected to relays digital inputs Manual remote contro...

Page 183: ...de the open and close commands while device is in Remote status The remote controls cannot override the open and close commands while device is in Local status OBJ LN mode 1 On 2 Blocked 3 Test 4 Test...

Page 184: ...be able to close circuit breaker Synchrocheck status can be either an internal signal generated by synchrocheck function or digital input activation with an external synchrocheck device Use Object rea...

Page 185: ...s pulled out If IEC 61850 is enabled GOOSE signals can be used for status indication Object Ready Objectx Ready status In A link to a physical digital input Indicates that status of the monitored obje...

Page 186: ...perator 2 Configurator 3 Super user Defines what level of access is required for MIMIC control The default is the Configurator level Objectx LOCAL Close control input Digital input or other logical si...

Page 187: ...erates events and registers from the status changes in monitored signals as well as control command fails and operations The user can select which event messages are stored in the main event buffer ON...

Page 188: ...Close Request OFF OBJ1 Close Command ON OBJ1 Close Command OFF OBJ1 Open Blocked ON OBJ1 Open Blocked OFF OBJ1 Close Blocked ON OBJ1 Close Blocked OFF OBJ1 Object Ready OBJ1 Object Not Ready OBJ1 Syn...

Page 189: ...k OBJ2 Open Command Fail OBJ2 Close Command Fail OBJ2 Final trip ON OBJ2 Final trip OFF OBJ3 Object Intermediate OBJ3 Object Open OBJ3 Object Close OBJ3 Object Bad OBJ3 WD Intermediate OBJ3 WD Out OBJ...

Page 190: ...WD Bad OBJ4 Open Request ON OBJ4 Open Request OFF OBJ4 Open Command ON OBJ4 Open Command OFF OBJ4 Close Request ON OBJ4 Close Request OFF OBJ4 Close Command ON OBJ4 Close Command OFF OBJ4 Open Blocke...

Page 191: ...5 Open Blocked ON OBJ5 Open Blocked OFF OBJ5 Close Blocked ON OBJ5 Close Blocked OFF OBJ5 Object Ready OBJ5 Object Not Ready OBJ5 Sync Ok OBJ5 Sync Not Ok OBJ5 Open Command Fail OBJ5 Close Command Fai...

Page 192: ...d Fail OBJ6 Final trip ON OBJ6 Final trip OFF OBJ7 Object Intermediate OBJ7 Object Open OBJ7 Object Close OBJ7 Object Bad OBJ7 WD Intermediate OBJ7 WD Out OBJ7 WD In OBJ7 WD Bad OBJ7 Open Request ON O...

Page 193: ...Request OFF OBJ8 Open Command ON OBJ8 Open Command OFF OBJ8 Close Request ON OBJ8 Close Request OFF OBJ8 Close Command ON OBJ8 Close Command OFF OBJ8 Open Blocked ON OBJ8 Open Blocked OFF OBJ8 Close...

Page 194: ...lose Blocked ON OBJ9 Close Blocked OFF OBJ9 Object Ready OBJ9 Object Not Ready OBJ9 Sync Ok OBJ9 Sync Not Ok OBJ9 Open Command Fail OBJ9 Close Command Fail OBJ9 Final trip ON OBJ9 Final trip OFF OBJ10...

Page 195: ...command s failure Close fail The cause of a Close command s failure Open command The source of an Open command Close command The source of an Open command General status The general status of the func...

Page 196: ...f the status conditions open and close are active Table 5 4 3 115 Indicator I O Signal Range Description IndicatorX Open input Ind X Open Status In Digital input or other logical signal selected by th...

Page 197: ...ermediate CIN5 Open CIN5 Close CIN5 Bad CIN6 Intermediate CIN6 Open CIN6 Close CIN6 Bad CIN7 Intermediate CIN7 Open CIN7 Close CIN7 Bad CIN8 Intermediate CIN8 Open CIN8 Close CIN8 Bad CIN9 Intermediat...

Page 198: ...s at Control Device IO mA outputs The outputs are activated in groups of two channels 1 and 2 are activated together as are channels 3 and 4 see the image below Figure 5 4 4 88 Activating mA output ch...

Page 199: ...ut value 2 0 0000 24 0000mA 0 0001mA 0mA The mA output value when the measured value is equal to or greater than Input value 2 Figure 5 4 4 89 Example of the effects of mA output channel settings Tabl...

Page 200: ...state see the image below The switch cannot be controlled by an auxiliary input such as digital inputs or logic signals it can only be controlled locally mimic or remotely RTU Settings These settings...

Page 201: ...alog input scaling 0 Disabled 1 Activated 0 Disabled Enables and disables the input Scaling curve 1 4 0 Disabled 1 Activated 0 Disabled Enables and disables the scaling curve and the input measurement...

Page 202: ...process signal For example the value for the filter time constant is 2 seconds for a 1 second period time of a disturbance oscillation When the curve signal is out of range it activates the ASC1 4 inp...

Page 203: ...pere signal at Point 2 Add curvepoint 3 20 0 Not used 1 Used 0 Not used Allows the user to create their own curve with up to twenty 20 curve points instead of using a linear curve between two points 5...

Page 204: ...can be controlled with a virtual switch built in the mimic and from a SCADA system IEC 61850 Modbus IEC 101 etc Logical inputs are volatile signals their status will always return to 0 when the AQ 200...

Page 205: ...lt Description User editable description LIx 1 31 characters Logical input x Description of the logical input This description is used in several menu types for easier identification 5 5 Monitoring fu...

Page 206: ...de processing threshold comparator block signal check time delay characteristics output processing The following conditions have to met simultaneously for the function alarm to activate None of the th...

Page 207: ...The following figure presents a simplified function block diagram of the current transformer supervision function Figure 5 5 1 94 Simplified function block diagram of the CTS function Measured input T...

Page 208: ...eral behavior of the function These settings are static i e it is not possible to change them by editing the setting group Table 5 5 1 128 General settings of the function Name Range Default Descripti...

Page 209: ...n the minimum and maximum values of the phase current This condition has to be met for the function to activate I2 I1 ratio 0 01 100 00 0 01 49 00 Determines the pick up ratio threshold for the negati...

Page 210: ...the blocking signal is active when the pick up element activates a BLOCKED signal is generated and the function does not process the situation further If the START function has been activated before t...

Page 211: ...uit fault in phase L1 wiring When a fault is detected and all conditions are met the CTS timer starts counting If the situation continues until the set time has passed the function issues an alarm A A...

Page 212: ...e has passed the function issues an alarm This means that the function supervises both the primary and the secondary circuit Figure 5 5 1 98 No wiring fault but heavy unbalance If any of the phases ex...

Page 213: ...are adjusted according to the application s normal behavior the operation of the function can be set to be very sensitive for broken circuit and conductor faults Figure 5 5 1 100 Normal situation res...

Page 214: ...ll be issued in case if the situation continues until the set alarming time is met Figure 5 5 1 102 Broken primary phase current wiring In this example all other condition are met except the residual...

Page 215: ...signals The user can select which event messages are stored in the main event buffer ON OFF or both The function offers two 2 independent stages The events triggered by the function are recorded with...

Page 216: ...nction is triggered from the circuit breaker s Open command output and it monitors the three phase current values in both the tripping moment and the normal breaker opening moment The maximum value of...

Page 217: ...neral behavior of the function These settings are static i e it is not possible to change them by switching the setting group Table 5 5 2 134 General settings Name Range Default Description CBW LN mod...

Page 218: ...136 Pick up settings Name Range Step Default Description Alarm 1 0 Disabled 1 Enabled 0 Disabled Enable and disable the Alarm 1 stage Alarm 1 Set 0 200 000 1 1 000 Defines the pick up threshold for r...

Page 219: ...ations Enable Alarm 2 1 Enabled Alarm 2 Set 100 operations With these settings Alarm 1 is issued when the cumulative interruption counter for any of the three phases dips below the set 1000 remaining...

Page 220: ...r phase L1 L2 Operations left Operations left for phase L2 L3 Operations left Operations left for phase L3 Events and registers The circuit breaker wear function abbreviated CBW in event block names g...

Page 221: ...available for the mimic and the measurement views in the HMI carousel The user can also set the alarming limits for each measured channel if the application so requires The monitoring of the measured...

Page 222: ...of the whole harmonic specter of 32 components from each measured current channel From these measurements the function calculates either the amplitude ratio or the power ratio A 20 ms averaged value o...

Page 223: ...nabled 1 Disabled 0 Enabled Enables and disables the THD alarm function from phase currents Enable I01 THD alarm 0 Enabled 1 Disabled 0 Enabled Enables and disables the THD alarm function from residua...

Page 224: ...splay event and a time stamped blocking event with information of the startup current values and its fault type to be issued The blocking signal can also be tested in the commissioning phase by a soft...

Page 225: ...ocked ON THD1 Blocked OFF The function registers its operation into the last twelve 12 time stamped registers The register of the function records the ON event process data for ACTIVATED BLOCKED etc T...

Page 226: ...ent I02 fine IL1 Phase current IL1 CT card 2 IL2 Phase current IL2 CT card 2 IL3 Phase current IL3 CT card 2 I01 c Residual current I01 coarse CT card 2 I01 f Residual current I01 fine CT card 2 I02 c...

Page 227: ...ing channels Measurements Signal Description Signal Description Currents Pri Pha curr ILx Primary phase current ILx IL1 IL2 IL3 Pha curr ILx TRMS Pri Primary phase current TRMS IL1 IL2 IL3 Pha angle I...

Page 228: ...system voltage U0 in percentages Ux Angle Ux angle U1 U2 U3 U4 System volt U0 ang Angle of the system voltage U0 Pos Neg Zero Seq volt Angle Positive Negative Zero sequence voltage angle Ux Angle diff...

Page 229: ...Display when not measurable is 0 Hz Frequency at the moment If the frequency is not measurable this will show 0 Hz Neutral susceptance B Pri Primary neutral susceptance f meas qlty Quality of tracked...

Page 230: ...ually or automatically by using the dedicated triggers Every signal listed in Digital recording channels can be selected to trigger the recorder The device has a maximum limit of 100 for the number of...

Page 231: ...checking the boxes enable the selected triggers Table 5 5 4 153 Recorder settings Name Range Step Default Description Recording length 0 100 1800 000s 0 01s 1s Sets the length of a recording Recording...

Page 232: ...than zero At least one trigger input has to be selected in the Recorder Trigger setting to fulfill this term Estimating the maximum length of total recording time Once the disturbance recorder s sett...

Page 233: ...o be made according to the following specifications the recording length is 6 0 s the sample rate is 64 s c therefore with a 50 Hz system frequency a sample is taken every 312 5 s the analog channels...

Page 234: ...File Open see the image below The recordings are packed COMTRADE files a zip file includes cfg and dat files AQviewer can open both original packed zip files and COMTRADE files directly as they are a...

Page 235: ...he cursor to create the area you want to zoom in You can also zoom in and out by using the horizontal and vertical magnifying glass and icons numbered 3 in the image below If you want to reset the zoo...

Page 236: ...rder memory cleared DR1 Oldest record cleared DR1 Recorder memory full ON DR1 Recorder memory full OFF DR1 Recording ON DR1 Recording OFF DR1 Storing recording ON DR1 Storing recording OFF DR1 Newest...

Page 237: ...button the big red circle starts the recorder Please note that closing the Measurement recorder window does not stop the recording that can only be done by hitting the Stop button the big blue circle...

Page 238: ...U2Volt Sec L3 Imp Active Energy kWh Sec Zero Seq Curr U3Volt Sec L3 Exp Imp Act E balance MWh Res Curr I01 TRMS Sec U4Volt Sec L3 Exp Imp Act E balance kWh Res Curr I02 TRMS Sec U1Volt Sec TRMS L3 Ex...

Page 239: ...rr angle System Volt U0 mag TM Max Temp Rise All Zero Seq Curr angle System Volt U0 mag kV TM Temp Rise atm Pri Pha Curr I L1 System Volt U1 mag TM Hot Spot estimate Pri Pha Curr I L2 System Volt U1 m...

Page 240: ...d Bias current I Pos Seq Curr 3PH Reactive Power Q HV I0d Diff current I Neg Seq Curr 3PH Tan phi HV I0d Char current I Zero Seq Curr 3PH Cos phi LV I0d Bias current Res Curr I 01 TRMS E Ener nerg gy...

Page 241: ...alues of currents voltages powers and impedances as well as other values The user can set up to eight 8 magnitudes to be recorded when the function is triggered An overcurrent fault type a voltage fau...

Page 242: ...l resistances reactances and impedances Z12Ang Z23Ang Z31Ang ZL1Ang ZL2Ang ZL3Ang The phase to phase and phase to neutral impedance angles Rseq Xseq Zseq RseqAng XseqAng ZseqAng The positive sequence...

Page 243: ...22 I0Dir Trip 23 I0Dir Trip 24 I0Dir Trip 25 f Trip 26 f Trip 27 f Trip 28 f Trip 29 f Trip 30 f Trip 31 f Trip 32 f Trip 33 P Trip 34 P Trip 35 Prev Trip 36 T Trip 37 I2 Trip 38 I2 Trip 39 I2 Trip 40...

Page 244: ...1 8 0 000 1800 000 A V p u 0 001 A V p u The recorded value in one of the eight channels Events The measurement value recorder function abbreviated VREC in event block names generates events from the...

Page 245: ...lays the status of the NTP time synchronization at the moment NO NOTE TE This indication is not valid if another time synchronization method is used external serial NTP processed message count 0 232 1...

Page 246: ...ings for measurement update interval Name Range Step Default Description Current measurement update interval 500 10 000ms 5ms 2 000ms Defines the measurement update interval of all current related mea...

Page 247: ...d with the IEC 61850 tool in AQtivate Report Control Blocks both buffered and unbuffered reporting Control Direct operate with normal security Select before operate with normal security Direct with en...

Page 248: ...1 5 0deg 0 1deg 1deg Determines the data reporting deadband settings for this measurement Integration time 0 10 000ms 1ms 0ms Defines the integration time of the protocol If this parameter is set to 0...

Page 249: ...x Description of the GOOSE input This description is used in several menu types for easier identification Setting the publisher The configuration of the GOOSE publisher is done using the IEC 61850 too...

Page 250: ...d master Link layer time out 0 60 000ms 1ms 0ms Defines the length of the time out for the link layer Link layer retries 1 20 1 1 Defines the number of retries for the link layer Diagnostic Error coun...

Page 251: ...eadband 0 1 1000 0kVar 0 1kVar 2kVar Determines the data reporting deadband settings for this measurement Apparent power deadband 0 1 1000 0kVA 0 1kVA 2kVA Determines the data reporting deadband setti...

Page 252: ...5 534 1 1 Defines the address for the link layer Link layer address size 1 2 1 2 Defines the address size of the link layer Information object address size 2 3 1 3 Defines the address size of the info...

Page 253: ...this measurement Apparent power deadband 0 1 1000 0kVA 0 1kVA 2kVA Determines the data reporting deadband settings for this measurement Power factor deadband 0 01 0 99 0 01 0 05 Determines the data r...

Page 254: ...ugh a communication protocol if one is in use The following table presents the setting parameters available for the 12 channels Table 6 2 174 Fault register settings Name Range Step Default Descriptio...

Page 255: ...0CalcMag Residual current calculated from phase currents IL1Ang IL2Ang IL3Ang I01Ang I02Ang I0CalcAng I1Ang I2Ang Angles of each measured current Voltages UL1Mag UL2Mag UL3Mag UL12Mag UL23Mag UL31Mag...

Page 256: ...8 ADAM module Settings Table 6 3 176 Settings Name Range Step Default Description Measurement value recorder mode 0 Disabled 1 Activated 0 Disabled Activates and disables the real time signals to com...

Page 257: ...7 Connections and application examples 7 1 Connections of AQ T256 Figure 7 1 112 AQ T256 variant without add on modules A AQ Q T256 T256 Instruction manual Version 2 06 Arcteq Relays Ltd IM00028 255...

Page 258: ...Figure 7 1 113 AQ T256 variant with digital input and output modules A AQ Q T256 T256 Instruction manual Version 2 06 256 Arcteq Relays Ltd IM00028...

Page 259: ...Transformer status monitoring Add on 10 slots Current based MR Measurement recorder 7 2 Application example and its connections This chapter presents an application example for the two winding transfo...

Page 260: ...input and one non latched trip output The figure below presents an application scheme for trip circuit supervision with one digital input and a non latched trip output With this connection the curren...

Page 261: ...be added to the digital input An activation delay that is slightly longer than the circuit breaker s operations time should be enough When circuit breaker failure protection CBFP is used adding its op...

Page 262: ...IED s output relay contact opens in under 50 ms or after a set release delay that takes place after the breaker is opened This means that the open coil is energized for a while after the breaker has...

Page 263: ...losed again The following logic scheme or similar blocks the supervision alarm when the circuit breaker is open The alarm is issued whenever the breaker is closed and whenever the inverted digital inp...

Page 264: ...Figure 7 3 120 Example block scheme A AQ Q T256 T256 Instruction manual Version 2 06 262 Arcteq Relays Ltd IM00028...

Page 265: ...h consists of the CPU a number of inputs and outputs and the power supply as well as two separate current measurement modules The images below present the modules of both the non optioned model AQ X25...

Page 266: ...d from Arcteq Relays Ltd or its representative who can then provide the module with its corresponding unlocking code to allow the device to operate correctly once the hardware configuration has been u...

Page 267: ...five channels of the second CT module fixed for AQ X256 If the CTM is not found the device issues an alarm 6 Scan Scans Slot E and moves to the next slot if Slot E is empty If the scan finds an 8DI m...

Page 268: ...installation of I O add on cards to the option module slots This is because all other module types are treated in a same way For example when an additional communication port is installed into the upp...

Page 269: ...rd communication ports and the relay s basic digital I O The current consumption of the digital inputs is 2 mA when activated while the range of the operating voltage is 24 V 110 V 220 V depending on...

Page 270: ...connected directly to a digital output T1 Tx it takes an additional 5 ms round Therefore when a digital input controls a digital output internally it takes 0 15 milliseconds in theory and 2 13 millis...

Page 271: ...ees with nominal current The frequency measurement range of the phase current inputs is 6 1800 Hz with standard hardware The quantization of the measurement signal is applied with 18 bit AD converters...

Page 272: ...lay settings Table 8 4 178 Digital input settings of DI8 module Name Range Step Default Description DIx Polarity 0 NO Normally open 1 NC Normally closed 0 NO Selects whether the status of the digital...

Page 273: ...criptions Option card digital inputs can be given a description The description will be displayed in several of the menus logic editor matrix block settings etc Table 8 4 179 Digital input user descri...

Page 274: ...l digital outputs are scanned in 5 ms program cycles and their contacts are mechanical in type The rated voltage of the NO NC outputs is 250 VAC DC For the naming convention of the digital inputs prov...

Page 275: ...p to three 3 light sensors serially connected to it The user can choose how many of the channels are in use The high speed outputs HSO1 and HSO2 operate only with a DC power supply The battery s posit...

Page 276: ...HSO control 8 7 RTD input module optional Figure 8 7 130 RTD input module connectors The RTD input module is an add on module with eight 8 RTD input channels Each input supports 2 wire 3 wire and 4 wi...

Page 277: ...2 module connectors Connector Name Description COM E Serial fiber GG PP GP PG Serial based communications Wavelength 660 nm Compatible with 50 125 m 62 5 125 m 100 140 m and 200 m Plastic Clad Silica...

Page 278: ...mmunications COM F Pin 8 RS 232 RX Serial based communications COM F Pin 9 COM F Pin 10 3 3 V output spare Spare power source for external equipment 45 mA COM F Pin 11 COM F Pin 12 The option card inc...

Page 279: ...tors 10BASE T and 100BASE TX Both cards support both HSR and PRP protocols 8 10 Double ST 100 Mbps Ethernet communication module optional Figure 8 10 134 Double ST 100 Mbps Ethernet communication modu...

Page 280: ...dundancy options please refer to the option card LC 100 Mbps Ethernet communication module The images below present two example configurations the first displays a ring configuration note how the thir...

Page 281: ...le RJ45 10 100 Mbps Ethernet communication module optional Figure 8 11 137 Double RJ 45 10 100 Mbps Ethernet communication module Connector Description Two pin connector IRIG B input A AQ Q T256 T256...

Page 282: ...igurations For other redundancy options please refer to the option card LC 100 Mbps Ethernet communication module Figure 8 11 138 Example of a multidrop configuration 8 12 Milliampere mA I O module op...

Page 283: ...n the factory or it can be upgraded in the field after the device s original installation when required The user sets the mA I O with the mA outputs control function This can be done at Control Device...

Page 284: ...Figure 8 13 141 Device installation A AQ Q T256 T256 Instruction manual Version 2 06 282 Arcteq Relays Ltd IM00028...

Page 285: ...Figure 8 13 142 Panel cut out and spacing of the IED A AQ Q T256 T256 Instruction manual Version 2 06 Arcteq Relays Ltd IM00028 283...

Page 286: ...quency measurement range From 6 75Hz fundamental up to the 31st harmonic current Current measurement range 25 mA 250 A RMS Current measurement inaccuracy 0 005 4 000 IN 0 5 or 15 mA 4 20 IN 0 5 20 50...

Page 287: ...VA Transient overreach 5 Terminal block connection Terminal block Phoenix Contact FRONT 4 H 6 35 Solid or stranded wire Maximum wire diameter 4 mm2 NO NOTE TE Current measurement accuracy has been ver...

Page 288: ...ime 40 ms with 24 VDC DC ripple 15 Terminal block connection Terminal block Phoenix Contact MSTB 2 5 5 ST 5 08 Solid or stranded wire Maximum wire diameter 2 5 mm2 Other Minimum recommended fuse ratin...

Page 289: ...be used for system protocols 9 1 2 3 CPU digital inputs Table 9 1 2 3 190 CPU model isolated digital inputs with thresholds defined by order code Rated values Rated auxiliary voltage 265 V AC DC Nomi...

Page 290: ...erminal block Phoenix Contact MSTB 2 5 5 ST 5 08 Solid or stranded wire Maximum wire diameter 2 5 mm2 Table 9 1 2 4 192 Digital outputs Change Over Rated values Rated auxiliary voltage 265 V AC DC Con...

Page 291: ...T 5 08 Solid or stranded wire Maximum wire diameter 2 5 mm2 9 1 3 2 Digital output module Table 9 1 3 2 194 Technical data for the digital output module Rated values Rated auxiliary voltage 265 V AC D...

Page 292: ...l rate 5 ms Operation delay 1 ms Polarity Normally Off Contact material Semiconductor Terminal block connection Terminal block Phoenix Contact MSTB 2 5 5 ST 5 08 Solid or stranded wire Maximum wire di...

Page 293: ...0 24 mA setting step 0 001 mA 1 000 000 000 1 000 000 0000 setting step 0 0001 9 1 3 5 RTD input module Table 9 1 3 5 199 Technical data for the RTD input module Channels 1 8 2 3 4 wire RTD Pt100 or P...

Page 294: ...rents Pick up Pick up current setting 0 10 50 00 In setting step 0 01 In Inrush 2nd harmonic blocking 0 10 50 00 Ifund setting step 0 01 Ifund Inaccuracy Current 2nd harmonic blocking 0 5 Iset or 15 m...

Page 295: ...ured residual current I01 1 A Measured residual current I02 0 2 A Calculated residual current I0Calc 5 A Pick up current setting 0 0001 40 00 In setting step 0 0001 In Inaccuracy Starting I01 1 A Star...

Page 296: ...tep 0 01 In I2pu 1 00 200 00 setting step 0 01 I2 I1 Minimum phase current at least one phase above 0 01 2 00 In setting step 0 01 In Inaccuracy Starting I2pu Starting I2 I1 1 0 unit or 100 mA 0 10 4...

Page 297: ...0000 step 0 0001 Inaccuracy IDMT operating time IDMT minimum operating time 1 5 or 20 ms 20 ms Instant operation time Start time and instant operation time trip IM ISET ratio 1 05 50 ms Reset Reset ra...

Page 298: ...p 0 005 s Inaccuracy Current criteria IM ISET ratio 1 05 DO or DI only 1 0 or 55 ms 15 ms Reset Reset ratio 97 of the pick up current setting Reset time 50 ms 9 2 1 6 Low impedance or high impedance r...

Page 299: ...plica temperature estimates Selectable between C and F Outputs Alarm 1 Alarm 2 Thermal trip Trip delay Restart inhibit 0 150 step 1 0 150 step 1 0 150 step 1 0 000 3600 000 s step 0 005 s 0 150 step 1...

Page 300: ...transformer differential protection function Measurement inputs Current inputs CT1 and CT2 current measurement module Phase current inputs IL1 A IL2 B IL3 C Residual current channel I01 Coarse Residu...

Page 301: ...rse Residual current channel I02 Fine Current input magnitudes Sample based phase current measurement Sample based residual current measurement Arc point sensor inputs Channels S1 S2 S3 S4 pressure an...

Page 302: ...monitoring Table 9 2 2 2 215 Technical data for the object control and monitoring function Signals Input signals Digital inputs Software signals Output signals Close command output Open command outpu...

Page 303: ...Instant reset time and start up reset 80 ms 50 ms in differential protection relays 9 2 3 2 Circuit breaker wear monitoring Table 9 2 3 2 217 Technical data for the circuit breaker wear monitoring fu...

Page 304: ...ecorder function Recorded values Recorder analog channels 0 20 channels Freely selectable Recorder digital channels 0 95 channels Freely selectable analog and binary signals 5 ms sample rate FFT Perfo...

Page 305: ...nd earth 4 kV 1 2 50 s Radiated RF electromagnetic field EN 60255 26 IEC 61000 4 3 f 80 1 000 MHz 10 V m Conducted RF field EN 60255 26 IEC 61000 4 6 f 150 kHz 80 MHz 10 V RMS Table 9 3 222 Voltage te...

Page 306: ...mperature range 35 70 C Transport and storage temperature range 40 70 C Other Altitude 2000 m Overvoltage category III Pollution degree 2 Casing and package Table 9 3 226 Dimensions and weight Without...

Page 307: ...wires RTD Input module pre configured Requires an external power module Advanced Co Ltd ADAM 4018 BE External 8 ch Thermocouple mA Input module pre configured Requires an external power module Advance...

Page 308: ...unit 50 000 lux threshold Max cable length 200 m Arcteq Ltd AQ 02A Pressure and light point sensor unit 8 000 lux threshold Max cable length 200 m Arcteq Ltd AQ 02B Pressure and light point sensor un...

Page 309: ...d postal address Kvartsikatu 2 A 1 65300 Vaasa Finland Contacts Phone 358 10 3221 370 Website arcteq fi Technical support support arcteq fi 358 10 3221 388 EET 9 00 17 00 E mail sales sales arcteq fi...

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Summary of Contents for AQ-T256

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Arcteq AQ-T256, Instruction Manual

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Summary of Contents for AQ-T256

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