Arcteq AQ-S255 Instruction Manual

Arcteq AQ-S255 Instruction Manual

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AQ-S255
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Summary of Contents for Arcteq AQ-S255

  • Page 1 AQ-S255 Bay control IED Instruction manual...
  • Page 3: Table Of Contents

    4.2 Configuring user levels and their passwords................. 12 5 Functions unctions ...................................................... 14 5.1 Functions included in AQ-S255.................... 14 5.2 Measurements........................14 5.2.1 Current measurement and scaling ................14 5.2.2 Voltage measurement and scaling ................29 5.2.3 Power and energy calculation ..................40 5.2.4 Frequency tracking and scaling .................
  • Page 4 9.3 Tests and environmental ....................253 10 Or 10 Ordering inf dering informa ormation tion ............................................256 11 Contact and r 11 Contact and re e f f er erence inf ence informa ormation tion....................................258 © Arcteq Relays Ltd IM00025...
  • Page 5 Nothing contained in this document shall increase the liability or extend the 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 instructions contained herein or caused by persons who do not fulfil the aforementioned requirements.
  • Page 6 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Copyright Copyright © Arcteq Relays Ltd. 2022. All rights reserved. © Arcteq Relays Ltd IM00025...
  • Page 7: Document Inf

    - Order codes revised. - Added double ST 100 Mbps Ethernet communication module and Double RJ45 10/100 Mbps Ethernet communication module descriptions Revision 2.02 Date 7.7.2020 Changes - A number of image descriptions improved. Revision 2.03 Date 27.8.2020 © Arcteq Relays Ltd IM00025...
  • Page 8 TRMS, peak-to-peak) and possible calculated measurement values (powers, impedances, angles etc.). - Improvements to many drawings and formula images. - AQ-S255 Functions included list Added: CBFP. - Changed disturbance recorder maximum digital channel amount from 32 to 95. - Added residual current coarse and fine measurement data to disturbance recorder description.
  • Page 9: Version 1 Revision Notes

    - Added spare part codes and compatibilities to option cards. 1.2 Version 1 revision notes Table. 1.2 - 2. Version 1 revision notes Revision 1.00 Date 8.4.2015 Changes The first revision for AQ-S255 Revision 1.01 Date 10.2.2017 Order code updated Changes Programmable stage description added Revision 1.02...
  • Page 10: Abbr Bbre E Via Viations Tions

    FFT – Fast Fourier transform FTP – File Transfer Protocol GI – General interrogation HMI – Human-machine interface HR – Holding register HV – High voltage HW – Hardware IDMT– Inverse definite minimum time IED – Intelligent electronic device © Arcteq Relays Ltd IM00025...
  • Page 11 SG – Setting group SOTF – Switch-on-to-fault SW – Software THD – Total harmonic distortion TRMS – True root mean square VT – Voltage transformer VTM – Voltage transformer module VTS – Voltage transformer supervision © Arcteq Relays Ltd IM00025...
  • Page 12: General

    Version: 2.06 3 General The AQ-S255 bay control unit is a member of the AQ-200 product line. The hardware and software are modular: the hardware modules are assembled and configured according to the application's I/O requirements and the software determines the available functions. This manual describes the specific application of the AQ-S255 bay control IED.
  • Page 13: Ied User Interface Erface

    (hardware or software) error that affects the operation of the unit. The activation of the yellow "Start" LED and the red "Trip" LED are based on the setting the user has put in place in the software. © Arcteq Relays Ltd IM00025...
  • Page 14: Configuring User Levels And Their Passwords

    The different user levels and their star indicators are as follows (also, see the image below for the HMI view): • Super user (***) • Configurator (**) • Operator (*) • User ( - ) © Arcteq Relays Ltd IM00025...
  • Page 15 In AQ-250 frame units unlocking and locking a user level generates a time-stamped event to the event log. NOTE! Any user level with a password automatically locks itself after half an hour (30 minutes) of inactivity. © Arcteq Relays Ltd IM00025...
  • Page 16: Functions Unctions

    Instruction manual Version: 2.06 5 Functions 5.1 Functions included in AQ-S255 The AQ-S255 bay control IED includes the following functions as well as the number of stages in those functions. Table. 5.1 - 3. Protection functions of AQ-S255. Name ANSI...
  • Page 17 For the measurements to be correct the user needs to ensure that the measurement signals are connected to the correct inputs, that the current direction is connected to the correct polarity, and that the scaling is set according to the nominal values of the current transformer. © Arcteq Relays Ltd IM00025...
  • Page 18 CT in Input I02 T in Input I02 L L oad ( oad (nominal) nominal) - CT primary: 100 A - I0CT primary: 10 A 36 A - CT secondary: 5 A - I0CT secondary: 1 A © Arcteq Relays Ltd IM00025...
  • Page 19 If the protected object's nominal current is chosen to be the basis for the per-unit scaling, the option "Object in p.u." is selected for the "Scale meas to In" setting (see the image below). Figure. 5.2.1 - 5. Setting the phase current transformer scalings to the protected object's nominal current. © Arcteq Relays Ltd IM00025...
  • Page 20 The first of the two images shows how the measurements are displayed when the CT primary values are the basis for the scaling; the second shows them when the protected object's nominal current is the basis for the scaling. © Arcteq Relays Ltd IM00025...
  • Page 21 Zero sequence CT scaling (ZCT scaling) is done when a zero sequence CT instead of a ring core CT is part of the measurement connection. In such a case the zero sequence CT should be connected to the I02 channel which has lower CT scaling ranges (see the image below). © Arcteq Relays Ltd IM00025...
  • Page 22 The measured current amplitude does not match one of the measured phases./ Check the wiring connections between the injection device or the CTs and the relay. The calculated I0 is measured even though it should not. © Arcteq Relays Ltd IM00025...
  • Page 23 The following image presents the most common problems with phase polarity. Problems with phase polarity are easy to find because the vector diagram points towards the opposite polarity when a phase has been incorrectly connected. © Arcteq Relays Ltd IM00025...
  • Page 24 If two phases are mixed together, the network rotation always follows the pattern IL1-IL3-IL2 and the measured negative sequence current is therefore always 1.00 (in. p.u.). © Arcteq Relays Ltd IM00025...
  • Page 25 "Scale measurement to In" setting. Ipu scaling A relay feedback value; the scaling factor for the primary current's primary per-unit value. Ipu scaling A relay feedback value; the scaling factor for the secondary current's secondary per-unit value. © Arcteq Relays Ltd IM00025...
  • Page 26 The primary RMS current measurement from each of the phase current ILx 0.00…1000000.00 0.01 current channels. ("Pri.Pha.curr.ILx") Primary phase current ILx TRMS The primary TRMS current (inc. harmonics up to 31 0.00…1000000.00 0.01 ("Pha.curr.ILx measurement from each of the phase current channels. TRMS Pri") © Arcteq Relays Ltd IM00025...
  • Page 27 The secondary RMS current measurement from the residual current current I0x 0.00…300.00 0.01 channel I01 or I02. ("Sec.Res.curr.I0x") Secondary The secondary RMS current measurement from the calculated current calculated I0 0.00…300.00 0.01 channel I0. ("Sec.calc.I0") © Arcteq Relays Ltd IM00025...
  • Page 28 Secondary negative sequence current The secondary measurement from the calculated negative 0.00…300.00 0.01 ("Sec.Negative sequence sequence current. curr") Secondary zero sequence The secondary measurement from the calculated zero current 0.00…300.00 0.01 sequence current. ("Sec.Zero sequence curr.") © Arcteq Relays Ltd IM00025...
  • Page 29 Table. 5.2.1 - 23. Per-unit phase current component measurements. Name Unit Range Step Description ILx resistive current The resistive current component measurement (in p.u.) ("ILx Resistive Current × In -1250.00…1250.00 0.01 from each of the phase current channels. p.u.") © Arcteq Relays Ltd IM00025...
  • Page 30 -300.00…300.00 0.01 ("ILx Resistive Current from each of the phase current channels. Sec.") Secondary reactive current ILx The secondary reactive current component measurement -300.00…300.00 0.01 ("ILx Reactive Current from each of the phase current channels. Sec.") © Arcteq Relays Ltd IM00025...
  • Page 31: Voltage Measurement And Scaling

    This voltage is measured by the protection relay. For the measurements to be correct the user needs to ensure that the measurement signals are connected to the correct inputs, that the voltage direction correct, and that the scaling is set correctly. © Arcteq Relays Ltd IM00025...
  • Page 32 This selection is defined in the "Measured magnitude" of each protection stage menu separately ( Protection → Voltage → [protection stage menu] → INFO ; see the image below). The number of available protection functions depends on the relay type. © Arcteq Relays Ltd IM00025...
  • Page 33 Figure. 5.2.2 - 16. Selecting the operating mode. There are several different ways to use all four voltage channels. The voltage measurement modes are the following: © Arcteq Relays Ltd IM00025...
  • Page 34 In the image below is an example of 2LL+U0+SS, that is, two line-to-line measurements with the zero sequence voltage and voltage from side 2 for Synchrocheck. Since U0 is available, line-to-neutral voltages can be calculated. © Arcteq Relays Ltd IM00025...
  • Page 35 The VT scaling has been set to 20 000 : 100 V. The U4 channel measures the zero sequence voltage which has the same ratio (20 000 : 100 V). © Arcteq Relays Ltd IM00025...
  • Page 36 Table. 5.2.2 - 27. Settings of the VT scaling. Name Range Step Default Description Voltage 0: 3LN+U4 The relay's voltage wiring method. The voltages are scaled according measurement 1: 3LL+U4 3LN+U4 the set voltage measurement mode. mode 2: 2LL+U3+U4 © Arcteq Relays Ltd IM00025...
  • Page 37 VT scaling A relay feedback value; the scaling factor for the primary voltage's factor p.u. Pri per-unit value. VT scaling A relay feedback value; the scaling factor for the secondary voltage's factor p.u. Sec per-unit value. © Arcteq Relays Ltd IM00025...
  • Page 38 The phase angle measurement from each of the four voltage inputs. Table. 5.2.2 - 31. Per-unit sequence voltage measurements. Name Unit Range Step Description Positive sequence The measurement (in p.u.) from the calculated positive sequence voltage × U 0.00…500.0 0.01 voltage. ("Pos.seq.Volt.p.u.") © Arcteq Relays Ltd IM00025...
  • Page 39 Range Step Description System voltage magnitude The primary RMS line-to-line UL12 voltage (measured or calculated). You UL12 0.00…1000000.00 0.01 can also select the row where the unit for this is kV. ("System volt UL12 mag") © Arcteq Relays Ltd IM00025...
  • Page 40 0.00…1000000.00 0.01 displayed only when the "2LL+U3+U4" mode is selected and both U3 and ("System U4 are in use. You can also select the row where the unit for this is kV. volt U4 mag") © Arcteq Relays Ltd IM00025...
  • Page 41 Perc.") 0: Per unit Harmonics 0: Per Defines how the harmonics are displayed: in p.u. values, as 1: Primary V display unit primary voltage values, or as secondary voltage values. 2: Secondary V © Arcteq Relays Ltd IM00025...
  • Page 42: Power And Energy Calculation

    (with U0 connected and measured): Figure. 5.2.3 - 21. Three-phase power (S) calculation. Figure. 5.2.3 - 22. Three-phase active power (P) calculation. In these equations, phi (φ) is the angle difference between voltage and current. © Arcteq Relays Ltd IM00025...
  • Page 43 Power factor calculation is done similarly to the Cosine phi calculation but the polarity is defined by the reactive power direction. Therefore, the power factor is calculated with the following formula: Only line y line-t -to-line v o-line volta oltages a ges av v ailable ailable © Arcteq Relays Ltd IM00025...
  • Page 44 4: Q4 Fwd Ind VA Reset energy Resets the memory of the three-phase energy calculators. calculators 0: - 0: - Goes automatically back to the "-" state after the reset is ("Reset 3ph 1: Reset finished. Energies") © Arcteq Relays Ltd IM00025...
  • Page 45 Range Step Default Description None selected DC 1…4 Pulse out OUT1…OUTx The selection of the controlled physical outputs. Power measurements The following power calculations are available when the voltage and the current cards are available. © Arcteq Relays Ltd IM00025...
  • Page 46 (kVarh or MVarh) active power is exported. 904.00 -999 999 995 Imported (Q) while Export Total amount of imported reactive energy while 904.00…999 999 995 0.01 (P). (kVarh or MVarh) active energy is exported. 904.00 © Arcteq Relays Ltd IM00025...
  • Page 47 The voltage scaling is set to 20 000 : 100 V and the current scaling is set to 1000 : 5 A. Voltages (line-to-neutral): Currents: = 40.825 V, 45.00° = 2.5 A, 0.00° © Arcteq Relays Ltd IM00025...
  • Page 48 L2 Cos 0.77 L3 Cos L3 Cos 0.99 3PH Cos H Cos 0.87 Voltages (line-to-line): Currents: = 100.00 V, 30.00° = 2.5 A, 0.00° = 100.00 V, -90.00° = 2.5 A, -120.00° = 2.5 A, 120.00° © Arcteq Relays Ltd IM00025...
  • Page 49: Frequency Tracking And Scaling

    0.1...- 0.2 % error in the whole frequency range. © Arcteq Relays Ltd IM00025...
  • Page 50 FFT calculation always has a whole power cycle in the buffer. The measurement accuracy is further improved by Arcteq's patented calibration algorithms that calibrate the analog channels against eight (8) system frequency points for both magnitude and angle.
  • Page 51 When frequency is not measurable this value returns to value Protections set to "System nominal frequency" parameter. Frequency measurement value used in display. When f.atm. Display 0.000…75.000Hz 0.001Hz - frequency is not measurable this value is "0 Hz". © Arcteq Relays Ltd IM00025...
  • Page 52: Protection Functions

    Additionally, the function's operating mode can be changed via setting group selection. The operational logic consists of the following: • input magnitude processing • input magnitude selection • threshold comparator • block signal check • time delay characteristics • output processing. © Arcteq Relays Ltd IM00025...
  • Page 53 RMS measurement of phase L3 (C) current I01RMS RMS measurement of residual input I01 I02RMS RMS measurement of residual input I02 I0Calc Calculated residual current from the phase current inputs DOIN Monitors digital output relay status © Arcteq Relays Ltd IM00025...
  • Page 54 Selects the residual current monitoring source, which can be either from the two 1: I01 0: Not I0Input separate residual measurements (I01 and I02) or from the phase current's 2: I02 in use calculated residual current. 3: I0Calc © Arcteq Relays Ltd IM00025...
  • Page 55 This parameter is visible only when Allow setting of individual LN mode is enabled in behaviour 4: Test/ General menu. Blocked 5: Off 0: Normal 1: Start CBFP condition 2: ReTrip Displays status of the protection function. 3: CBFP On 4: Blocked © Arcteq Relays Ltd IM00025...
  • Page 56 CBFP starts the timer. This setting defines how long the starting condition CBFP 0.000…1800.000s 0.005s 0.200s has to last before the CBFP signal is activated. The following figures present some typical cases of the CBFP function. © Arcteq Relays Ltd IM00025...
  • Page 57 The retrip is wired from its own device output contact in parallel with the circuit breaker's redundant trip coil. The CBFP signal is normally wired from its device output contact to the incomer breaker. Below are a few operational cases regarding the various applications. © Arcteq Relays Ltd IM00025...
  • Page 58 CBFP signal to the incomer breaker. If the primary protection function clears the fault, both counters (RETRIP and CBFP) are reset as soon as the measured current is below the threshold settings. © Arcteq Relays Ltd IM00025...
  • Page 59 (RETRIP and CBFP) are reset as soon as the measured current is below the threshold settings or the tripping signal is reset. This configuration allows the CBFP to be controlled with current-based functions alone, and other function trips can be excluded from the CBFP functionality. © Arcteq Relays Ltd IM00025...
  • Page 60 This configuration allows the CBFP to be controlled with current-based functions alone, with added security from current monitoring. Other function trips can also be included in the CBFP functionality. © Arcteq Relays Ltd IM00025...
  • Page 61 Probably the most 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 the various applications and settings of the CBFP function. © Arcteq Relays Ltd IM00025...
  • Page 62 CBFP signal is sent to the incomer breaker. If the primary protection function clears the fault, the counter for CBFP resets as soon as the measured current is below the threshold settings. © Arcteq Relays Ltd IM00025...
  • Page 63 The time delay counter for CBFP is reset as soon as the measured current is below the threshold settings or the tripping signal is reset. This configuration allows the CBFP to be controlled by current-based functions alone, and other function trips can be excluded from the CBFP functionality. © Arcteq Relays Ltd IM00025...
  • Page 64 This configuration allows the CBFP to be controlled by current-based functions alone, with added security from current monitoring. Other function trips can also be included to the CBFP functionality. © Arcteq Relays Ltd IM00025...
  • Page 65 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Device configuration as a dedicated CBFP unit Figure. 5.3.1 - 33. Wiring diagram when the device is configured as a dedicated CBFP unit. © Arcteq Relays Ltd IM00025...
  • Page 66 The events triggered by the function are recorded with a time stamp and with process data values. Table. 5.3.1 - 54. Event messages. Event block name Event names CBF1 Start ON CBF1 Start OFF CBF1 Retrip ON CBF1 Retrip OFF © Arcteq Relays Ltd IM00025...
  • Page 67: Programmable Stage (Pgx>/<; 99)

    (10) depending on how many the application needs. In the image below, the number of programmable stages have been set to two which makes PS1 and PS2 to appear. Inactive stages are hidden until they are activated. © Arcteq Relays Ltd IM00025...
  • Page 68 2: Blocked Displays the mode of PGS block. PSx >/< LN 3: Test This parameter is visible only when Allow setting of individual LN mode is behaviour 4: Test/ enabled in General menu. Blocked 5: Off © Arcteq Relays Ltd IM00025...
  • Page 69 Divides Signal 1 by Signal 2. The comparison uses the product of this calculation. 2: Max (Mag1, The bigger value of the chosen signals is used in the comparison. Mag2) 3: Min (Mag1, The smaller value of the chosen signals is used in the comparison. Mag2) © Arcteq Relays Ltd IM00025...
  • Page 70 2: Min (Mag1, Mag2, Mag3) The smallest value of the chosen signals is used in the comparison. 3: Mag1 OR Mag2 OR Mag3 Any of the signals fulfills the pick-up condition. Each signal has their own pick-up setting. © Arcteq Relays Ltd IM00025...
  • Page 71 Signal 1 or Signal 2 as well as Signal 3 fulfill the pick-up condition. The settings for different comparisons are in the setting groups. This means that each signal parameter can be changed by changing the setting group. © Arcteq Relays Ltd IM00025...
  • Page 72 (in p.u.) IL1 7 IL1 7 harmonic value (in p.u.) IL1 9 IL1 9 harmonic value (in p.u.) IL1 11 IL1 11 harmonic value (in p.u.) IL1 13 IL1 13 harmonic value (in p.u.) © Arcteq Relays Ltd IM00025...
  • Page 73 Description I01 ff (p.u.) I01 Fundamental frequency RMS value (in p.u.) I01 2 I01 2 harmonic value (in p.u.) I01 3 I01 3 harmonic value (in p.u.) I01 4 I01 4 harmonic value (in p.u.) © Arcteq Relays Ltd IM00025...
  • Page 74 Positive sequence current value (in p.u.) I2 Mag Negative sequence current value (in p.u.) IL1 Ang IL1 angle of current IL2 Ang IL2 angle of current IL3 Ang IL3 angle of current I01 Ang I01 angle of current © Arcteq Relays Ltd IM00025...
  • Page 75 Positive sequence voltage U2 neg.seq.V Mag Negative sequence voltage U0CalcAng Calculated residual voltage angle U1 pos.seq.V Ang Positive sequence voltage angle U2 neg.seq.V Ang Negative sequence voltage angle P P o o w w ers © Arcteq Relays Ltd IM00025...
  • Page 76 Reactance X L23 secondary (Ω) RL31Sec Resistance R L31 secondary (Ω) XL31Sec Reactance X L31 secondary (Ω) Z12Pri Impedance Z L12 primary (Ω) Z23Pri Impedance Z L23 primary (Ω) Z31Pri Impedance Z L31 primary (Ω) © Arcteq Relays Ltd IM00025...
  • Page 77 ZSeqSec Positive Impedance Z secondary (Ω) ZSeqAngle Positive Impedance Z angle GL1Pri Conductance G L1 primary (mS) BL1Pri Susceptance B L1 primary (mS) GL2Pri Conductance G L2 primary (mS) BL2Pri Susceptance B L2 primary (mS) © Arcteq Relays Ltd IM00025...
  • Page 78 Transformer thermal temperature RTD meas 1…16 RTD measurement channels 1…16 Ext RTD meas 1…8 External RTD measurement channels 1…8 (ADAM) mA input 7,8,15,16 mA input channels 7, 8, 15, 16 ASC 1…4 Analog scaled curves 1…4 © Arcteq Relays Ltd IM00025...
  • Page 79 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 reset. © Arcteq Relays Ltd IM00025...
  • Page 80 PGS1 PS4 >/< Start ON PGS1 PS4 >/< Start OFF PGS1 PS4 >/< Trip ON PGS1 PS4 >/< Trip OFF PGS1 PS4 >/< Block ON PGS1 PS4 >/< Block OFF PGS1 PS5 >/< Start ON © Arcteq Relays Ltd IM00025...
  • Page 81 PGS1 PS9 >/< Block OFF PGS1 PS10 >/< Start ON PGS1 PS10 >/< Start OFF PGS1 PS10 >/< Trip ON PGS1 PS10 >/< Trip OFF PGS1 PS10 >/< Block ON PGS1 PS10 >/< Block OFF © Arcteq Relays Ltd IM00025...
  • Page 82: Control Functions

    Control → Setting groups . When the forcing parameter is enabled, the automatic control of the local device is overridden and the full control of the setting groups is given to the user until the "Force SG change" is disabled again. © Arcteq Relays Ltd IM00025...
  • Page 83 Disabled from a local HMI. This parameter overrides the local control of the setting Enabled groups and it remains on until the user disables it. © Arcteq Relays Ltd IM00025...
  • Page 84 0: Not control. Can be controlled with pulses or static signals. If static signal control is applied, group active all other SG requests will be processed regardless of the signal status of this setting Active group. © Arcteq Relays Ltd IM00025...
  • Page 85 The status of the Petersen coil controls whether Setting group 1 is active. If the coil is disconnected, Setting group 2 is active. This way, if the wire is broken for some reason, the setting group is always controlled to SG2. © Arcteq Relays Ltd IM00025...
  • Page 86 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 5.4.1 - 38. Setting group control – two-wire connection from Petersen coil status. © Arcteq Relays Ltd IM00025...
  • Page 87 The application-controlled setting group change can also be applied entirely from the relay's internal logics. For example, the setting group change can be based on the cold load pick-up function (see the image below). © Arcteq Relays Ltd IM00025...
  • Page 88 The function does not have a register. Table. 5.4.1 - 62. Event messages. Event block name Event names SG2 Enabled SG2 Disabled SG3 Enabled SG3 Disabled SG4 Enabled SG4 Disabled SG5 Enabled SG5 Disabled © Arcteq Relays Ltd IM00025...
  • Page 89 Force Request Fail Force ON Force Request Fail Force OFF SG Req. Fail Lower priority Request ON SG Req. Fail Lower priority Request OFF SG1 Active ON SG1 Active OFF SG2 Active ON SG2 Active OFF © Arcteq Relays Ltd IM00025...
  • Page 90: Object Control And Monitoring

    • digital input status indications (the OPEN and CLOSE status signals) • blockings (if applicable) • the OBJECT READY and SYNCHROCHECK monitor signals (if applicable). • Withdrawable cart IN and OUT status signals (if applicable). © Arcteq Relays Ltd IM00025...
  • Page 91 Circuit 2: Disconnector withdrawable cart is in/out status is monitored. See the next table ("Object breaker (MC) types") for a more detailed look at which functionalities each of the object types 3: Disconnector have. (GND) © Arcteq Relays Ltd IM00025...
  • Page 92 Functionalities Description Breaker cart position Circuit breaker position Circuit breaker control Withdrawable circuit Object ready check before closing The monitor and control configuration of the withdrawable breaker breaker circuit breaker. Synchrochecking before closing breaker Interlocks © Arcteq Relays Ltd IM00025...
  • Page 93 Determines the maximum length for a Close pulse from the output relay to the 0.02…500.00 0.02 command 0.2 s controlled object. If the object operates faster than this set time, the control pulse pulse is reset and a status change is detected. length © Arcteq Relays Ltd IM00025...
  • Page 94 Blocking and interlocking can be based on any of the following: other object statuses, a software function or a digital input. The image below presents an example of an interlock application, where the closed earthing switch interlocks the circuit breaker close command. © Arcteq Relays Ltd IM00025...
  • Page 95 The user can select which event messages are stored in the main event buffer: ON, OFF, or both. The function registers its operation into the last twelve (12) time-stamped registers. The events triggered by the function are recorded with a time stamp and with process data values. © Arcteq Relays Ltd IM00025...
  • Page 96 Final trip ON OBJ1 Final trip OFF OBJ2 Object Intermediate OBJ2 Object Open OBJ2 Object Close OBJ2 Object Bad OBJ2 WD Intermediate OBJ2 WD Out OBJ2 WD In OBJ2 WD Bad OBJ2 Open Request ON © Arcteq Relays Ltd IM00025...
  • Page 97 Open Command ON OBJ3 Open Command OFF OBJ3 Close Request ON OBJ3 Close Request OFF OBJ3 Close Command ON OBJ3 Close Command OFF OBJ3 Open Blocked ON OBJ3 Open Blocked OFF OBJ3 Close Blocked ON © Arcteq Relays Ltd IM00025...
  • Page 98 Close Blocked OFF OBJ4 Object Ready OBJ4 Object Not Ready OBJ4 Sync Ok OBJ4 Sync Not Ok OBJ4 Open Command Fail OBJ4 Close Command Fail OBJ4 Final trip ON OBJ4 Final trip OFF OBJ5 Object Intermediate © Arcteq Relays Ltd IM00025...
  • Page 99 Object Intermediate OBJ6 Object Open OBJ6 Object Close OBJ6 Object Bad OBJ6 WD Intermediate OBJ6 WD Out OBJ6 WD In OBJ6 WD Bad OBJ6 Open Request ON OBJ6 Open Request OFF OBJ6 Open Command ON © Arcteq Relays Ltd IM00025...
  • Page 100 OBJ7 Close Request ON OBJ7 Close Request OFF OBJ7 Close Command ON OBJ7 Close Command OFF OBJ7 Open Blocked ON OBJ7 Open Blocked OFF OBJ7 Close Blocked ON OBJ7 Close Blocked OFF OBJ7 Object Ready © Arcteq Relays Ltd IM00025...
  • Page 101 Object Not Ready OBJ8 Sync Ok OBJ8 Sync Not Ok OBJ8 Open Command Fail OBJ8 Close Command Fail OBJ8 Final trip ON OBJ8 Final trip OFF OBJ9 Object Intermediate OBJ9 Object Open OBJ9 Object Close © Arcteq Relays Ltd IM00025...
  • Page 102 OBJ10 Object Bad OBJ10 WD Intermediate OBJ10 WD Out OBJ10 WD In OBJ10 WD Bad OBJ10 Open Request ON OBJ10 Open Request OFF OBJ10 Open Command ON OBJ10 Open Command OFF OBJ10 Close Request ON © Arcteq Relays Ltd IM00025...
  • Page 103: Indicator Object Monitoring

    (2) digital inputs. Alternatively, object status monitoring can be performed with a single digital input: the input's active state and its zero state (switched to 1 with a NOT gate in the Logic editor). © Arcteq Relays Ltd IM00025...
  • Page 104 ON, OFF, or both. Table. 5.4.3 - 72. Event messages (instances 1-20). Event block name Event names CIN1 Intermediate CIN1 Open CIN1 Close CIN1 CIN2 Intermediate © Arcteq Relays Ltd IM00025...
  • Page 105 CIN6 CIN7 Intermediate CIN7 Open CIN7 Close CIN7 CIN8 Intermediate CIN8 Open CIN8 Close CIN8 CIN9 Intermediate CIN9 Open CIN9 Close CIN9 CIN10 Intermediate CIN10 Open CIN10 Close CIN10 CIN11 Intermediate CIN11 Open CIN11 Close © Arcteq Relays Ltd IM00025...
  • Page 106 CIN16 Intermediate CIN16 Open CIN16 Close CIN16 CIN17 Intermediate CIN17 Open CIN17 Close CIN17 CIN18 Intermediate CIN18 Open CIN18 Close CIN18 CIN19 Intermediate CIN19 Open CIN19 Close CIN19 CIN20 Intermediate CIN20 Open CIN20 Close CIN20 © Arcteq Relays Ltd IM00025...
  • Page 107: Auto-Recloser (79)

    This is why there are no universally applicable answers from the number of shots and the duration of the dead times to which protection functions should trigger the auto-recloser. © Arcteq Relays Ltd IM00025...
  • Page 108 This type of application normally uses an auto-recloser with two shots (one high-speed and one delayed) which are triggered by earth fault protection or overcurrent protection. Short-circuit protection is used for interlocking the auto-recloser in case a clear short-circuit fault occurs in the line. © Arcteq Relays Ltd IM00025...
  • Page 109 The signal status graphs describe the statuses of available requests, the statuses of the auto- recloser's internal signals, the statuses of the timers, the breaker controls from the auto- recloser function as well as the breaker status signals. © Arcteq Relays Ltd IM00025...
  • Page 110 Therefore, the auto-recloser function only monitors the status of the directional earth fault stage's tripping before initiating requests and shots. © Arcteq Relays Ltd IM00025...
  • Page 111 A "Close" command is dropped after the breaker's "Closed" indication is received and the auto- recloser function starts calculating S S ho hot2 t2 R R eclaim T eclaim Time ime. © Arcteq Relays Ltd IM00025...
  • Page 112 This type of sequence (i.e. two shots required to clear the fault) represents 10...15 % of all faults that occur in MV overhead line networks. Figure. 5.4.4 - 49. Signal status graph of the semi-permanent earth fault auto-recloser cycle. © Arcteq Relays Ltd IM00025...
  • Page 113 This auto-recloser scheme has the same starters and shots as the two previous examples. The setting and signals are also the same. However, in this example the fault is cleared by the high-speed shot. Figure. 5.4.4 - 50. Settings for I0dir> with two shots. © Arcteq Relays Ltd IM00025...
  • Page 114 The user can also set is so that AR Reclaim is not used at all after a successful reclosing cycle. 7. The AR R AR Reclaim eclaim time is exceeded and the function is set to "Ready" to wait for the next request. © Arcteq Relays Ltd IM00025...
  • Page 115 2. The S S ho hot1 Star t1 Start T t Time ime (500 ms) for has elapsed and the auto-recloser function starts running (AR Running AR Running). This sends an "Open" command to the breaker. © Arcteq Relays Ltd IM00025...
  • Page 116 Figure. 5.4.4 - 54. Settings for I> with two shots. This type of sequence (i.e. two shots required to clear the fault) represents 10...15 % of all faults that occur in MV overhead line networks. © Arcteq Relays Ltd IM00025...
  • Page 117 9. The circuit breaker is closed and since the fault was cleared by Shot 2, no more pick-ups are detected. The "Close" command is dropped after the the breaker's "Closed" indication is received. The auto-recloser function also starts calculating the S S ho hot2 R t2 Reclaim T eclaim Time ime. © Arcteq Relays Ltd IM00025...
  • Page 118 This type of sequence (i.e. the first shot clears the fault) represents 75...85 % of all faults that occur in MV overhead line networks. Figure. 5.4.4 - 57. Signal status graph of the transient overcurrent auto-recloser cycle. © Arcteq Relays Ltd IM00025...
  • Page 119 When the sequence is succesful, the collector substation's breaker is given permission to close after the reclaim time; the breaker should be closed with the Synchrocheck function. © Arcteq Relays Ltd IM00025...
  • Page 120 The behavior of the function can be changed even during sequences that are based on programmed reclosing schemes and on active requests. © Arcteq Relays Ltd IM00025...
  • Page 121 All status changes in the input signals (inc. the requests) always cause recorded events, also in the object's registers and the object's continuous status indications. Events can be enabled or disabled according to the application requirements. © Arcteq Relays Ltd IM00025...
  • Page 122 AR2 Request The signal "AR2 Request ON" is activated and displayed when the function is executing a shot requested by REQ2. This signal can be connected to any relay I/O as well as into communication protocols. © Arcteq Relays Ltd IM00025...
  • Page 123 The function has both general settings and active settings concerning requests and shots. The general settings control the desired object selection as well as the general behavior of the function in different operating schemes. © Arcteq Relays Ltd IM00025...
  • Page 124 When clicked open, displays the status of the function. Status 11: AR1 Requested 12: AR2 Requested 13: AR3 Requested 14: AR4 Requested 15: AR5 Requested 16: Executing Shot1 17: Executing Shot2 18: Executing Shot3 19: Executing Shot4 20: Executing Shot5 21: Shot Clear © Arcteq Relays Ltd IM00025...
  • Page 125 This selection can be changed via the device's setting group selection in real time. © Arcteq Relays Ltd IM00025...
  • Page 126 After the dead time has elapsed and the breaker is closed ARx Shot by the auto-recloser, the reclaim time starts calculating. If 0.000…1800.000s 0.0005s 0.000s 0.000s reclaim time the process is interrupted by a new reclosing request, the function continues to the next shot. © Arcteq Relays Ltd IM00025...
  • Page 127 The auto-recloser function's shot settings are grouped into corresponding rows to make the setting of each shot straightforward. From the settings the user can see how the reclosing cycle is executed by each request, which functions initiate requests, and which shots and requests are in use. © Arcteq Relays Ltd IM00025...
  • Page 128 The user can enable timers to be displayed in the MIMIC view. Enable the AR timer value at Tools → Events and logs → Set alarm events (see the image below). The timer displays the reclaim time and the dead time delay. © Arcteq Relays Ltd IM00025...
  • Page 129 AR Shot clear Object "Close" request Object "Open" request Inhibit condition ON Inhibit condition OFF Locking condition ON Locking condition OFF Reserved AR1 Request ON AR1 Request OFF AR2 Request ON AR2 Request OFF AR3 Request ON © Arcteq Relays Ltd IM00025...
  • Page 130 Dead time ON Dead time OFF Arc Discr time ON Arc Discr time OFF Shot reclaim time ON Shot reclaim time OFF Sequence finished OFF Final trip executed OFF Object "Close" request OFF AR ON AR OFF © Arcteq Relays Ltd IM00025...
  • Page 131 AR1 Shot start time ON dd.mm.yyyy hh:mm:ss.mss 4045 AR1 Object "Open" request dd.mm.yyyy hh:mm:ss.mss 2944 OBJ1 Object Intermediate dd.mm.yyyy hh:mm:ss.mss 2952 OBJ1 Open request ON dd.mm.yyyy hh:mm:ss.mss 2955 OBJ1 Open command ON dd.mm.yyyy hh:mm:ss.mss 4063 AR1 AR Running ON © Arcteq Relays Ltd IM00025...
  • Page 132 The auto-recloser function keeps statistical track of the operated auto-reclosing cycles as well as of successful and failed shots. The function records the following counters: • Shot 1…5 started • Shot 1…5 requested by AR1…5 © Arcteq Relays Ltd IM00025...
  • Page 133: Synchrocheck (Δv/Δa/Δf; 25)

    (UL12, UL23 or UL31). • SYN3 – Supervises the synchronization condition between the channels U3 and U4. The seven images below present three different example connections and four example applications of the synchrocheck function. © Arcteq Relays Ltd IM00025...
  • Page 134 Figure. 5.4.5 - 61. Example connection of the synchrocheck function (3LN+U4 mode, SYN1 in use, UL1 as reference voltage). Figure. 5.4.5 - 62. Example connection of the synchrocheck function (2LL+U0+U4 mode, SYN1 in use, UL12 as reference voltage). © Arcteq Relays Ltd IM00025...
  • Page 135 Figure. 5.4.5 - 63. Example connection of the synchrocheck function (2LL+U3+U4 mode, SYN3 in use, UL12 as reference voltage). Figure. 5.4.5 - 64. Example application (synchrocheck over one breaker, with 3LL and 3LN VT connections). © Arcteq Relays Ltd IM00025...
  • Page 136 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 5.4.5 - 65. Example application (synchrocheck over one breaker, with 2LL VT connection). © Arcteq Relays Ltd IM00025...
  • Page 137 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 5.4.5 - 66. Example application (synchrocheck over two breakers, with 2LL VT connection). © Arcteq Relays Ltd IM00025...
  • Page 138 "live" or a "dead" state. The parameter SYNx U conditions is used to determine the conditions (in addition to the three aspects) which are required for the systems to be considered synchronized. The image below shows the different states the systems can be in. © Arcteq Relays Ltd IM00025...
  • Page 139 Instruction manual Version: 2.06 Figure. 5.4.5 - 68. System states. The following figures present simplified function block diagrams of the synchrocheck function. Figure. 5.4.5 - 69. Simplified function block diagram of the SYN1 and SYN2 function. © Arcteq Relays Ltd IM00025...
  • Page 140 Displays the mode of SYN block. 2: Blocked dV / da / df LN 3: Test This parameter is visible only when Allow setting of individual LN mode is behaviour 4: Test/Blocked enabled in General menu. 5: Off © Arcteq Relays Ltd IM00025...
  • Page 141 Setting parameters NOTE! TE! Before these settings can be accessed, a voltage channel (U3 or U4) must be set into the synchrocheck mode ("SS") in the voltage transformer settings ( Measurements → VT Module ). © Arcteq Relays Ltd IM00025...
  • Page 142 0: Not in use Selects the reference voltage of the stage. SYN2 V 1: UL12 0: Not Reference 2: UL23 in use SYN2 is available when both U3 and U4 have been set to SS mode. 3: UL31 © Arcteq Relays Ltd IM00025...
  • Page 143 SYN1 SYN1 Volt condition OK SYN1 SYN1 Volt cond not match SYN1 SYN1 Volt diff Ok SYN1 SYN1 Volt diff out of setting SYN1 SYN1 Angle diff Ok SYN1 SYN1 Angle diff out of setting © Arcteq Relays Ltd IM00025...
  • Page 144 SYN1 SYN2 Switch OFF SYN1 SYN3 Switch ON SYN1 SYN3 Switch OFF The function registers its operation into the last twelve (12) time-stamped registers. The table below presents the structure of the function's register content. © Arcteq Relays Ltd IM00025...
  • Page 145: Milliampere Output Control

    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. 5.4.6 - 71. Activating mA output channels. © Arcteq Relays Ltd IM00025...
  • Page 146 The mA output value when the measured value is equal output 0.0000…24.0000mA 0.0001mA 0mA to or greater than Input value 2. value 2 Figure. 5.4.6 - 72. Example of the effects of mA output channel settings. © Arcteq Relays Ltd IM00025...
  • Page 147: Programmable Control Switch

    These settings can be accessed at Control → Device I/O → Programmable control switch . Table. 5.4.7 - 91. Settings. Name Range Default Description The user-settable name of the selected switch. The name can be up to Switch name Switchx 32 characters long. © Arcteq Relays Ltd IM00025...
  • Page 148: Analog Input Scaling Curves

    Range Step Default Description Analog input 0: Disabled Enables and disables the input. scaling 1: Activated Disabled 0: Disabled Enables and disables the scaling curve and the input Scaling curve 1...4 1: Activated Disabled measurement. © Arcteq Relays Ltd IM00025...
  • Page 149 The Nyquist rate states that the filter time constant must be at least double the period time of the disturbance process signal. For example, the value for the filter time constant is 2 seconds for a 1 second period time of a disturbance oscillation. © Arcteq Relays Ltd IM00025...
  • Page 150 1 0: Not 0: Not Allows the user to create their own curve with up to twenty (20) curve curvepoint used used points, instead of using a linear curve between two points. 3...20 1: Used © Arcteq Relays Ltd IM00025...
  • Page 151: Logical Outputs

    SCADA system (IEC 61850, Modbus, IEC 101, etc.). Logical inputs are volatile signals: their status will always return to "0" when the AQ-200 device is rebooted. 64 logical inputs are available. © Arcteq Relays Ltd IM00025...
  • Page 152 Table. 5.4.10 - 96. Logical input user description. Name Range Default Description User editable 1...31 Logical Description of the logical input. This description is used in several menu description LIx characters input x types for easier identification. © Arcteq Relays Ltd IM00025...
  • Page 153: Monitoring Functions

    • At least one of the three-phase currents are below the I low limit setting. • The ratio between the calculated minum and maximum of the three-phase currents is below the I ratio setting. © Arcteq Relays Ltd IM00025...
  • Page 154 The time stamp resolution is 1 ms. The function also provides a resettable cumulative counter for the CTS ALARM and BLOCKED events. The following figure presents a simplified function block diagram of the current transformer supervision function. © Arcteq Relays Ltd IM00025...
  • Page 155 Signal Description Time base IL1RMS RMS measurement of phase L1 (A) current IL2RMS RMS measurement of phase L2 (B) current IL3RMS RMS measurement of phase L3 (C) current I01RMS RMS measurement of residual input I01 © Arcteq Relays Ltd IM00025...
  • Page 156 The reset ratio of 97 % and 103% are built into the function and is always relative to the value. The setting value is common for all measured amplitudes, and when the I exceeds the value (in single, dual or all currents) it triggers the pick-up operation of the function. © Arcteq Relays Ltd IM00025...
  • Page 157 -360.00...360.00 0.01 Displays the natural unbalance of angle after compensating it Natural unbalance ang with Compensate natural unbalance parameter. Measured current 0.01 0.00...50.00 xIn Current difference between summed phases and residual current. difference Isum, I0 © Arcteq Relays Ltd IM00025...
  • Page 158 "General properties of a protection function" and its section "Operating time characteristics for trip and reset". Typical cases of current transformer supervision The following nine examples present some typical cases of the current transformer supervision and their setting effects. © Arcteq Relays Ltd IM00025...
  • Page 159 Figure. 5.5.1 - 79. Secondary circuit 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. © Arcteq Relays Ltd IM00025...
  • Page 160 If any of the phases exceed the I high limit setting, the operation of the function is not activated. This behavior is applied to short-circuits and earth faults even when the fault current exceeds the I high limit setting. © Arcteq Relays Ltd IM00025...
  • Page 161 Figure. 5.5.1 - 83. Normal situation, residual current also measured. When the residual condition is added with the "I0 input selection", the sum of the current and the residual current are compared against each other to verify the wiring condition. © Arcteq Relays Ltd IM00025...
  • Page 162 Figure. 5.5.1 - 85. Broken primary phase current wiring. In this example, all other condition are met except the residual difference. That is now 0 × I , which indicates a primary side fault. © Arcteq Relays Ltd IM00025...
  • Page 163 The function registers its operation into the last twelve (12) time-stamped registers; this information is available for all provided instances separately. The register of the function records the ON event process data for ACTIVATED, BLOCKED, etc. The table below presents the structure of the function's register content. © Arcteq Relays Ltd IM00025...
  • Page 164: Voltage Transformer Supervision (60)

    1 ms. The function also provides a resettable cumulative counter for the START, ALARM BUS, ALARM LINE and BLOCKED events. Figure. 5.5.2 - 87. Secondary circuit fault in phase L1 wiring. The following figure presents a simplified function block diagram of the voltage transformer supervision function. © Arcteq Relays Ltd IM00025...
  • Page 165 RMS measurement of voltage U RMS measurement of voltage U Positive sequence voltage Negative sequence voltage Zero sequence voltage Angle of U voltage Angle of U voltage Angle of U voltage Angle of U voltage Angle of U voltage © Arcteq Relays Ltd IM00025...
  • Page 166 The voltage transformer supervision can also report several different states of the measured voltage. These can be seen in the function's INFO tab in the relay's HMI or in AQtivate. © Arcteq Relays Ltd IM00025...
  • Page 167 The blocking of the function causes an HMI display event and a time-stamped blocking event with information of the startup voltage values and its fault type to be issued. © Arcteq Relays Ltd IM00025...
  • Page 168 Event 1: Voltage OK 2: Bus live, VTS Setting group 0.00...360.00deg alarm hh:mm:ss.mss name 2: Low OK, Seq. reversed 1...8 active voltage 3: Bus live, VTS 0...1800s OK, Seq. undefined 4: Bus live, VTS fault © Arcteq Relays Ltd IM00025...
  • Page 169: Circuit Breaker Wear

    "Open" operations as well as the ALARM 1 and ALARM 2 events. The function can also monitor the operations left for each phase. The following figure presents a simplified function block diagram of the circuit breaker wear function. © Arcteq Relays Ltd IM00025...
  • Page 170 Table. 5.5.3 - 111. Settings for circuit breaker characteristics. Name Range Step Default Description The number of interrupting life operations at the nominal current (Close - Operations 1 0…200 000 50 000 Open). © Arcteq Relays Ltd IM00025...
  • Page 171 Let us examine the settings, using a low-duty vacuum circuit breaker (ISM25_LD_1/3) manufactured by Tavrida as an example. The image below presents the technical specifications provided by the manufacturer, with the data relevant to our settings highlighted in red: © Arcteq Relays Ltd IM00025...
  • Page 172 With these settings, Alarm 1 is issued when the cumulative interruption counter for any of the three phases dips below the set 1000 remaining operations ("Alarm 1 Set"). Similarly, when any of the counters dips below 100 remaining operations, Alarm 2 is issued. © Arcteq Relays Ltd IM00025...
  • Page 173 CBWEAR1 Alarm 2 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. The table below presents the structure of the function's register content. © Arcteq Relays Ltd IM00025...
  • Page 174: Fault Locator (21Fl)

    See the table "Required current conditions" for more information on which conditions have to be met to trigger impedance recording. © Arcteq Relays Ltd IM00025...
  • Page 175 The events triggered by the function are recorded with a time stamp and with process data values. Table. 5.5.4 - 119. Event messages. Event block name Event names FLX1 Flocator triggered ON FLX1 Flocator triggered OFF © Arcteq Relays Ltd IM00025...
  • Page 176: Total Harmonic Distortion (Thd)

    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 function parameters while the function is running. This only applies if the alarming is activated. © Arcteq Relays Ltd IM00025...
  • Page 177 Table. 5.5.5 - 121. Measurement inputs of the total harmonic distortion monitor function. Signal Description Time base IL1FFT FFT measurement of phase L1 (A) current IL2FFT FFT measurement of phase L2 (B) current © Arcteq Relays Ltd IM00025...
  • Page 178 The pick-up setting for the THD alarm element from the residual current I01. I01 THD 0.10…100.00% 0.01% 10.00% The measured THD value has to exceed this setting in order for the alarm pick-up signal to activate. © Arcteq Relays Ltd IM00025...
  • Page 179 5 ms before the set operating delay has passed in order for the blocking to activate in time. Operating time characteristics for activation and reset This function supports definite time delay (DT). The following table presents the setting parameters for the function's time characteristics. © Arcteq Relays Ltd IM00025...
  • Page 180 Event Used SG pretriggering current Fault current Prefault current dd.mm.yyyy Event Start/alarm -20ms THD of Start/Alarm THD of Start -200 ms THD of Setting group hh:mm:ss.mss name each phase. each phase. each phase. 1...8 active. © Arcteq Relays Ltd IM00025...
  • Page 181: Disturbance Recorder (Dr)

    Tracked frequency of reference 3 ISup Current measurement module voltage supply supervision (CT card 1) ISup'' Current measurement module voltage supply supervision (CT card 2) USup Voltage measurement module voltage supply supervision (VT card 2) © Arcteq Relays Ltd IM00025...
  • Page 182 (I01, I02) Residual current I0x (I01, Secondary residual current TRMS I0x (I01, Res.curr.I0x Res.curr.I0x TRMS Sec I02) I02) Secondary residual current Primary residual current TRMS I0x (I01, Sec.Res.curr.I0x Res.curr.I0x TRMS Pri I0x (I01, I02) I02) © Arcteq Relays Ltd IM00025...
  • Page 183 ILx Resistive Current Sec. in per-unit values (I01, I02) IL3) p.u. I0x Residual I0x residual ractive current Secondary reactive current ILx (IL1, IL2, Reactive Current ILx Reactive Current Sec. in per-unit values (I01, I02) IL3) p.u. © Arcteq Relays Ltd IM00025...
  • Page 184 Enable f based functions frequency-based protection functions are component (Pri) component I01 enabled. Table. 5.5.6 - 131. Digital recording channels – Binary signals. Signal Description Signal Description Digital input 1...11 Timer x Output Output of Timer 1...10 © Arcteq Relays Ltd IM00025...
  • Page 185 Enables and disables the disturbance recorder function. enabled 1: Disabled Enabled 0: Recorder ready 1: Recording triggered 2: Recording and Recorder storing Indicates the status of recorder. status 3: Storing recording 4: Recorder full 5: Wrong config © Arcteq Relays Ltd IM00025...
  • Page 186 Sets the recording length before the trigger. time 0…8 freely Selects the analog channel for recording. Please see the list of all Analog recording selectable available analog channels in the section titled "Analog and digital CH1...CH20 channels recording channels". © Arcteq Relays Ltd IM00025...
  • Page 187 For example, let us say the nominal frequency is 50 Hz, the selected sample rate is 64 s/c, nine (9) analog channels and two (2) digital channels record. The calculation is as follows: Therefore, the maximum recording length in our example is approximately 496 seconds. © Arcteq Relays Ltd IM00025...
  • Page 188 The recorder is configured by using the setting tool software or relay HMI, and the results are analyzed with the AQviewer software (is automatically downloaded and installed with AQtivate). Registered users can download the latest tools from the Arcteq website (arcteq.fi./downloads/).
  • Page 189 Once clicked, the "Add graph" pop-up window appears (see the image below on the right). In the example the line-to-neutral voltages UL1, UL2 and UL3 are selected and moved to the window on the right. Confirm the selection by clicking the "OK" button. © Arcteq Relays Ltd IM00025...
  • Page 190 (manually or by dedicated signals). Events cannot be masked off. The user can select which event messages are stored in the main event buffer: ON, OFF, or both. © Arcteq Relays Ltd IM00025...
  • Page 191: Measurement Recorder

    Recorder triggered ON Recorder triggered OFF Recorder memory cleared Oldest record cleared Recorder memory full ON Recorder memory full OFF Recording ON Recording OFF Storing recording ON Storing recording OFF Newest record cleared 5.5.7 Measurement recorder © Arcteq Relays Ltd IM00025...
  • Page 192 Pha.angle I”L1 L1 Exp/Imp React.Ind.E.bal.kvarh Pri.Res.Curr.I01 Pha.angle I”L2 L2 Exp.Active Energy MWh Pri.Res.Curr.I02 Pha.angle I”L3 L2 Exp.Active Energy kWh Pri.Calc.I0 Res.Curr.angle I”01 L2 Imp.Active Energy MWh Pha.Curr.IL1 TRMS Pri Res.Curr.angle I”02 L2 Imp.Active Energy kWh © Arcteq Relays Ltd IM00025...
  • Page 193 Imp.Active Energy MWh Pha.L1 ampl. THD Pos.Seq.Volt. p.u. Imp.Active Energy kWh Pha.L2 ampl. THD Neg.Seq.Volt. p.u. Exp/Imp Act. E balance MWh Pha.L3 ampl. THD Zero.Seq.Volt. p.u. Exp/Imp Act. E balance kWh Pha.L1 pow. THD U1Volt Angle Exp.React.Cap.E.Mvarh © Arcteq Relays Ltd IM00025...
  • Page 194 Sec.Pha.Curr.I”L1 System Volt U0 ang S7 Measurement Sec.Pha.Curr.I”L2 System Volt U1 ang S8 Measurement Sec.Pha.Curr.I”L3 System Volt U2 ang S9 Measurement Sec.Res.Curr.I”01 System Volt U3 ang S10 Measurement Sec.Res.Curr.I”02 System Volt U4 ang S11 Measurement © Arcteq Relays Ltd IM00025...
  • Page 195 Res.I”01 pow. THD L1 Imp.React.Cap.E.Mvarh Curve4 Output Res.I”02 ampl. THD L1 Imp.React.Cap.E.kvarh Control mode Res.I”02 pow. THD L1 Exp/Imp React.Cap.E.bal.Mvarh Motor status P-P Curr.I”L1 L1 Exp/Imp React.Cap.E.bal.kvarh Active setting group P-P Curr.I”L2 L1 Exp.React.Ind.E.Mvarh L1 Exp.React.Ind.E.kvarh © Arcteq Relays Ltd IM00025...
  • Page 196: Measurement Value Recorder

    The angles of each measured current. I1Ang, I2Ang V V olta oltages Descrip Description tion UL1Mag, UL2Mag, UL3Mag, UL12Mag, UL23Mag, UL31Mag The magnitudes of phase voltages, of phase-to-phase voltages, and of residual voltages. U0Mag, U0CalcMag © Arcteq Relays Ltd IM00025...
  • Page 197 Reported values When triggered, the function holds the recorded values of up to eight channels, as set. In addition to this tripped stage, the overcurrent fault type and the voltage fault types are reported to SCADA. © Arcteq Relays Ltd IM00025...
  • Page 198 45: U0> Trip 46: U0>> Trip 47: U0>>> Trip 48: U0>>>> Trip 0: - 1: A-G 2: B-G 3: A-B Overcurrent fault type The overcurrent fault type. 4: C-G 5: A-C 6: B-C 7: A-B-C © Arcteq Relays Ltd IM00025...
  • Page 199 The user can select which event messages are stored in the main event buffer: ON, OFF, or both. Table. 5.5.8 - 138. Event messages. Event block name Event name VREC1 Recorder triggered ON VREC1 Recorder triggered OFF © Arcteq Relays Ltd IM00025...
  • Page 200: Sy Y St Stem Int 6 S Em Integra Egration Tion

    • Write multiple holding registers (function code 16) • Read/Write multiple registers (function code 23) The following data can be accessed using both Modbus/TCP and Modbus/RTU: • Device measurements • Device I/O • Commands • Events • Time © Arcteq Relays Ltd IM00025...
  • Page 201: Modbus I/O

    Defines the Modbus unit address for the selected I/O Module (A, B, or C). If this setting 0…247 address is set to "0", the selected module is not in use. Module x 0: ADAM-4018+ Selects the module type. type 1: ADAM-4015 © Arcteq Relays Ltd IM00025...
  • Page 202: Iec 61850

    AQ-25x frame units support both Edition 1 and 2 of IEC61850. The following services are supported by IEC 61850 in Arcteq devices: • Up to six data sets (predefined data sets can be edited with the IEC 61850 tool in AQtivate) •...
  • Page 203: Goose

    → AQ-200 series → Resources). 6.1.5 GOOSE Arcteq relays support both GOOSE publisher and GOOSE subscriber. GOOSE subscriber is enabled with the "GOOSE subscriber enable" parameter at Communication → Protocols → IEC 61850/ GOOSE. The GOOSE inputs are configured using either the local HMI or the AQtivate software.
  • Page 204: Iec 103

    (slave) station. The IEC 103 protocol can be selected for the serial ports that are available in the device. A primary (master) station can then communicate with the Arcteq device and receive information by polling from the slave device. The transfer of disturbance recordings is not supported.
  • Page 205: Dnp3

    Selects the variation of the double point signal. 1: Var 2 0: Var 1 1: Var 2 Group 20 variation (CNTR) 0: Var 1 Selects the variation of the control signal. 2: Var 5 3: Var 6 © Arcteq Relays Ltd IM00025...
  • Page 206 Determines the data reporting deadband settings for this 0.01…5000.00V 0.01V 200V voltage deadband measurement. Angle Determines the data reporting deadband settings for this 0.1…5.0deg 0.1deg 1deg measurement deadband measurement. Integration time 0…10 000ms Displays the integration time of the protocol. © Arcteq Relays Ltd IM00025...
  • Page 207: Iec 101/104

    The measurement scaling coefficients are available for the following measurements, in addition to the general measurement scaling coefficient: • Active energy • Reactive energy • Active power • Reactive power • Apparent power • Power factor • Frequency © Arcteq Relays Ltd IM00025...
  • Page 208 Determines the data reporting deadband settings for this 0.01…5000.00V 0.01V 200V voltage deadband measurement. Angle Determines the data reporting deadband settings for this 0.1…5.0deg 0.1deg 1deg measurement deadband measurement. Integration time 0…10 000ms Displays the integration time of the protocol. © Arcteq Relays Ltd IM00025...
  • Page 209: Spa

    With the Real-time signals to communication menu the user can report to SCADA measurements that are not normally available in the communication protocols mapping. Up to eight (8) magnitudes can be selected. The recorded value can be either a per-unit value or a primary value (set by the user). © Arcteq Relays Ltd IM00025...
  • Page 210 Cos (φ) of three-phase powers and phase powers. cosfiL2 cosfiL3 Impedances and admittances RL12, RL23, RL31 XL12, XL23, XL31 RL1, RL2, RL3 XL1, XL2, XL3 Phase-to-phase and phase-to-neutral resistances, reactances and impedances. Z12, Z23, Z31 ZL1, ZL2, ZL3 © Arcteq Relays Ltd IM00025...
  • Page 211 Displays the measured value of the selected magnitude of the selected slot. -10 000 000.000…10 000 Magnitude X 0.001 - 000.000 The unit depends on the selected magnitude (either amperes, volts, or per-unit values). © Arcteq Relays Ltd IM00025...
  • Page 212: Connections Of Aq-S255

    A A Q Q -S255 -S255 Instruction manual Version: 2.06 7 Connections and application examples 7.1 Connections of AQ-S255 Figure. 7.1 - 97. AQ-S255 variant without add-on modules. © Arcteq Relays Ltd IM00025...
  • Page 213 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 7.1 - 98. AQ-S255 variant with digital input and output modules. © Arcteq Relays Ltd IM00025...
  • Page 214: Application Example And Its Connections

    A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 7.1 - 99. AQ-S255 application example with function block diagram. AQ-S255 Device I/O Add-on 3 (IL) 4 voltage 1...3 9 slots 2 (I0) channels Monitoring functions 21FL Fault Disturbance...
  • Page 215: Two-Phase, Three-Wire Aron Input Connection

    This chapter presents the two-phase, three-wire ARON input connection for any AQ-200 series IED with a current transformer. The example is for applications with protection CTs for just two phases. The connection is suitable for both motor and feeder applications. © Arcteq Relays Ltd IM00025...
  • Page 216: Trip Circuit Supervision (95)

    (52b) even after the circuit breaker is opened. This requires a resistor which reduces the current: this way the coil is not energized and the relay output does not need to cut off the coil's inductive current. © Arcteq Relays Ltd IM00025...
  • Page 217 Non-latched outputs are seen as hollow circles in the output matrix, whereas latched contacts are painted. See the image below of an output matrix where a non-latched trip contact is used to open the circuit breaker. © Arcteq Relays Ltd IM00025...
  • Page 218 There is one main difference between non-latched and latched control in trip circuit supervision: when using the latched control, the trip circuit (in an open state) cannot be monitored as the digital input is shorted by the IED's trip output. © Arcteq Relays Ltd IM00025...
  • Page 219 Logical output can be used in the output matrix or in SCADA as the user wants. The image below presents a block scheme when a non-latched trip output is not used. © Arcteq Relays Ltd IM00025...
  • Page 220 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 7.4 - 106. Example block scheme. © Arcteq Relays Ltd IM00025...
  • Page 221: Construction And Installa

    The images below present the modules of both the non-optioned model (AQ- X255-XXXXXXX-AAAAAAAAAAA AAAAAAAAAAA) and a partially optioned model (AQ- X255-XXXXXXX-BBBBBCAAAA BBBBBCAAAAJ J ). Figure. 8.1 - 107. Modular construction of AQ-X255-XXXXXXX-AAAAAAAAAAA © Arcteq Relays Ltd IM00025...
  • Page 222 In field upgrades, therefore, the add-on module must be ordered 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 upgraded.
  • Page 223 "OUT11", "OUT12", "OUT13", "OUT14" and "OUT15" to this slot. If the scan finds the arc protection module, it reserves the sensor channels ("S1", "S2", "S3", "S4"), the high-speed outputs ("HSO1", "HSO2"), and the digital input channel ("ArcBI") to this slot. © Arcteq Relays Ltd IM00025...
  • Page 224: Cpu Module

    = DATA +, Pin 2 = DATA –, Pin 3 = GND, Pins 4 & 5 = Terminator resistor enabled by shorting. X1-1 Digital input 1, nominal threshold voltage 24 V, 110 V or 220 V. X1-2 Digital input 2, nominal threshold voltage 24 V, 110 V or 220 V. © Arcteq Relays Ltd IM00025...
  • Page 225 Defines the delay for the status change from 1 to 0. time 0: Disabled Selects whether or not a 30-ms deactivation delay is added to DIx AC mode 1: Enabled Disabled account for alternating current. © Arcteq Relays Ltd IM00025...
  • Page 226: Current Measurement Module

    1 A and 5 A, which provide ±0.5 % inaccuracy when the range is 0.005…4 × I The measurement ranges are as follows: • Phase currents 25 mA…250 A (RMS) • Coarse residual current 5 mA…150 A (RMS) • Fine residual current 1 mA…75 A (RMS) © Arcteq Relays Ltd IM00025...
  • Page 227: Voltage Measurement Module

    • The quantization of the measurement signal is applied with 18-bit AD converters, and the sample rate of the signal is 64 samples/cycle when the system frequency ranges from 6 Hz to 75 Hz. © Arcteq Relays Ltd IM00025...
  • Page 228: Digital Input Module (Optional)

    For the naming convention of the digital inputs provided by this module please refer to the chapter titled "Construction and installation". For technical details please refer to the chapter titled "Digital input module" in the "Technical data" section of this document. © Arcteq Relays Ltd IM00025...
  • Page 229 (NC) defines whether or not the digital input is considered activated when the digital input channel is energized. The diagram below depicts the digital input states when the input channels are energized and de- energized. © Arcteq Relays Ltd IM00025...
  • Page 230 Control → Device IO → Digital inputs → Digital input voltages . Table. 8.5 - 161. Digital input channel voltage measurement. Name Range Step Description DIx Voltage now 0.000...275.000 V 0.001 V Voltage measurement of a digital input channel. © Arcteq Relays Ltd IM00025...
  • Page 231: Digital Output Module (Optional)

    Table. 8.6 - 162. Digital output user description. Name Range Default Description User editable 1...31 Description of the digital output. This description is used in several menu OUTx description OUTx characters types for easier identification. © Arcteq Relays Ltd IM00025...
  • Page 232: Rtd Input Module (Optional)

    The RTD input module is an add-on module with eight (8) RTD input channels. Each input supports 2-wire, 3-wire and 4-wire RTD sensors. The sensor type can be selected with software for two groups, four channels each. The card supports Pt100 and Pt1000 sensors © Arcteq Relays Ltd IM00025...
  • Page 233: Serial Rs-232 Communication Module (Optional)

    Description • Serial-based communications • Wavelength 660 nm Serial fiber (GG/ • Compatible with 50/125 μm, 62.5/125 μm, 100/140 μm, and COM E PP/GP/PG) 200 μm Plastic-Clad Silica (PCS) fiber • Compatible with ST connectors © Arcteq Relays Ltd IM00025...
  • Page 234: Lc Or Rj45 100 Mbps Ethernet Communication Module (Optional)

    The option card includes two serial communication interfaces: COM E is a serial fiber interface with glass/plastic option, COM F is an RS-232 interface. 8.9 LC or RJ45 100 Mbps Ethernet communication module (optional) Figure. 8.9 - 119. LC and RJ45 100 Mbps Ethernet module connectors. © Arcteq Relays Ltd IM00025...
  • Page 235: Double St 100 Mbps Ethernet Communication Module (Optional)

    Two-pin connector • Duplex ST connectors • 62.5/125 μm or 50/125 μm multimode fiber • Transmitter wavelength: 1260…1360 nm (nominal: 1310 nm) ST connectors • Receiver wavelength: 1100…1600 nm • 100BASE-FX • Up to 2 km © Arcteq Relays Ltd IM00025...
  • Page 236 The images below present two example configurations: the first displays a ring configuration (note how the third party devices are connected in a separate ring), while the second displays a multidrop configuration. Figure. 8.10 - 121. Example of a ring configuration. © Arcteq Relays Ltd IM00025...
  • Page 237: Double Rj45 10/100 Mbps Ethernet Communication Module (Optional)

    Figure. 8.10 - 122. Example of a multidrop configuration. 8.11 Double RJ45 10/100 Mbps Ethernet communication module (optional) Figure. 8.11 - 123. Double RJ-45 10/100 Mbps Ethernet communication module. Connector Description • IRIG-B input Two-pin connector © Arcteq Relays Ltd IM00025...
  • Page 238: Milliampere (Ma) I/O Module (Optional)

    For other redundancy options, please refer to the option card "LC 100 Mbps Ethernet communication module". Figure. 8.11 - 124. Example of a multidrop configuration. 8.12 Milliampere (mA) I/O module (optional) Figure. 8.12 - 125. Milliampere (mA) I/O module connections. © Arcteq Relays Ltd IM00025...
  • Page 239: Dimensions And Installation

    (½) of the rack's width, meaning that a total of two devices can be installed to the same rack next to one another. The figures below describe the device dimensions (first figure), the device installation (second), and the panel cutout dimensions and device spacing (third). Figure. 8.13 - 126. Device dimensions. © Arcteq Relays Ltd IM00025...
  • Page 240 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 8.13 - 127. Device installation. © Arcteq Relays Ltd IM00025...
  • Page 241 A A Q Q -S255 -S255 Instruction manual Version: 2.06 Figure. 8.13 - 128. Panel cut-out and spacing of the IED. © Arcteq Relays Ltd IM00025...
  • Page 242: Technic Echnical Da Al Data Ta

    From 6…75 Hz fundamental, up to the 31 harmonic current Current measurement range 5 mA…150 A (RMS) 0.002…10.000 × I < ±0.5 % or < ±3 mA Current measurement inaccuracy 10…150 × I < ±0.5 % © Arcteq Relays Ltd IM00025...
  • Page 243: Voltage Measurement

    4 independent VT inputs (U1, U2, U3 and U4) Measurement Sample rate 64 samples per cycle in frequency range 6...75Hz Voltage measuring range 0.50…480.00 V (RMS) 1…2 V ±1.5 % Voltage measurement inaccuracy 2…10 V ±0.5 % 10…480 V ±0.35 % © Arcteq Relays Ltd IM00025...
  • Page 244: Power And Energy Measurement

    Inaccuracy 10 mHz 9.1.2 CPU & Power supply 9.1.2.1 Auxiliary voltage Table. 9.1.2.1 - 167. Power supply model A Rated values Rated auxiliary voltage 85…265 V (AC/DC) < 20 W Power consumption < 40 W © Arcteq Relays Ltd IM00025...
  • Page 245: Cpu Communication Ports

    Data transfer rate 100 MB System integration Cannot be used for system protocols, only for local programming Table. 9.1.2.2 - 170. Rear panel system communication port A. Port Port media Copper Ethernet RJ-45 Number of ports Features © Arcteq Relays Ltd IM00025...
  • Page 246: Cpu Digital Inputs

    Settings Pick-up delay Software settable: 0…1800 s Polarity Software settable: Normally On/Normally Off Current drain 2 mA Terminal block connection Terminal block Phoenix Contact MSTB 2,5/5-ST-5,08 Solid or stranded wire 2.5 mm Maximum wire diameter © Arcteq Relays Ltd IM00025...
  • Page 247: Cpu Digital Outputs

    Maximum wire diameter 2.5 mm 9.1.3 Option cards 9.1.3.1 Digital input module Table. 9.1.3.1 - 175. Technical data for the digital input module. Rated values Rated auxiliary voltage 5…265 V (AC/DC) Current drain 2 mA © Arcteq Relays Ltd IM00025...
  • Page 248: Digital Output Module

    Table. 9.1.3.3 - 177. Technical data for the milliampere module. Signals Output magnitudes 4 × mA output signal (DC) Input magnitudes 1 × mA input signal (DC) mA input Range (hardware) 0...33 mA Range (measurement) 0...24 mA Inaccuracy ±0.1 mA © Arcteq Relays Ltd IM00025...
  • Page 249: Rtd Input Module

    Table. 9.1.3.6 - 180. Technical data for the double LC 100 Mbps Ethernet communication module. Protocols Protocols HSR and PRP Ports Quantity of fiber ports LC fiber connector Communication port C & D Wavelength 1300 nm Fiber cable 50/125 μm or 62.5/125 μm multimode (glass) © Arcteq Relays Ltd IM00025...
  • Page 250: Display

    0.02…500.00 s, setting step 0.02 s Inaccuracy: - Definite time operating time ±0.5 % or ±10 ms Breaker control operation time External object control time <75 ms Object control during auto-reclosing See the technical sheet for the auto-reclosing function. © Arcteq Relays Ltd IM00025...
  • Page 251: Auto-Reclosing (0 → 1; 79)

    - Frequency ±25 mHz (U> 30 V secondary) - Angle ±1.5° (U> 30 V secondary) Reset Reset ratio: - Voltage 99 % of the pick-up voltage setting - Frequency 20 mHz - Angle ±2.0° Activation time © Arcteq Relays Ltd IM00025...
  • Page 252: Monitoring Functions

    > 1.05 <80 ms (<50 ms in differential protection relays) Reset Reset ratio 97/103 % of the pick-up current setting Instant reset time and start-up reset <80 ms (<50 ms in differential protection relays) © Arcteq Relays Ltd IM00025...
  • Page 253: Voltage Transformer Supervision (60)

    0…200 000 operations, setting step 1 operation Inaccuracy Inaccuracy for current/operations counter: - Current measurement element 0.1× I > I < 2 × I ±0.2 % of the measured current, rest 0.5 % - Operation counter ±0.5 % of operations deducted © Arcteq Relays Ltd IM00025...
  • Page 254: Total Harmonic Distortion

    0.000…5.000 s, setting step 0.001 Ω/km Inaccuracy: - Reactance ±5.0 % (typically) Operation (Triggering) Activation From the trip signal of any protection stage Minimum operation time At least 0.040 s of stage operation time required © Arcteq Relays Ltd IM00025...
  • Page 255: Disturbance Recorder

    Power supply input 4 kV, 5/50 ns, 5 kHz EN 60255-26, IEC 61000-4-4 Other inputs and outputs 4 kV, 5/50 ns, 5 kHz Surge: Between wires: 2 kV, 1.2/50 µs EN 60255-26, IEC 61000-4-5 Between wire and earth: 4 kV, 1.2/50 µs © Arcteq Relays Ltd IM00025...
  • Page 256 Table. 9.3 - 197. Environmental conditions. IP classes IP54 (front) Casing protection class IP21 (rear) Temperature ranges Ambient service temperature range –35…+70 °C Transport and storage temperature range –40…+70 °C Other Altitude <2000 m Overvoltage category Pollution degree © Arcteq Relays Ltd IM00025...
  • Page 257 Height: 208 mm Dimensions Width: 257 mm (½ rack) Depth: 165 mm (no cards or connectors) Weight 1.5 kg With packaging (gross) Height: 250 mm Dimensions Width: 343 mm Depth: 256 mm Weight 2.0 kg © Arcteq Relays Ltd IM00025...
  • Page 258: Ordering Inf Dering Informa Ormation Tion

    External 6-channel 2 or 3 wires RTD Input module, pre- Requires an external power Advanced Co. ADAM-4015-CE configured module Ltd. ADAM-4018+- External 8-ch Thermocouple mA Input module, pre- Requires an external power Advanced Co. configured module Ltd. AQX121 Raising frame 120mm Arcteq Ltd. © Arcteq Relays Ltd IM00025...
  • Page 259 A A Q Q -S255 -S255 Instruction manual Version: 2.06 AQX122 Raising frame 40mm Arcteq Ltd. AQX098 Wall mounting bracket Arcteq Ltd. © Arcteq Relays Ltd IM00025...
  • Page 260: Contact And R Ence Informa Ormation Tion

    Arcteq Relays Ltd. Visiting and 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 © Arcteq Relays Ltd IM00025...

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