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Arcteq AQ-G3 7 Series Instruction Manual

Generator protection device
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AQ-G3x7
Generator protection device
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Summary of Contents for Arcteq AQ-G3 7 Series

  • Page 1 AQ-G3x7 Generator protection device Instruction manual...

  • Page 2: Table Of Contents

    6.3.26 Inrush current detection (68) ................. 149 6.4 Control, monitoring and measurements................150 6.4.1 Common function ....................150 6.4.2 Trip logic (94) ......................153 6.4.3 Dead line detection (DLD) ..................155 6.4.4 Voltage transformer supervision (VTS)..............156 © Arcteq Relays Ltd IM00071...
  • Page 3 10.5 Tests and environmental conditions.................. 191 11 Or 11 Ordering inf dering informa ormation tion ............................................193 12 Contact and r 12 Contact and re e f f er erence inf ence informa ormation tion....................................194 © Arcteq Relays Ltd IM00071...
  • Page 4 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 5: Document Inf

    • Current and voltage measurement descriptions revised. R R e e vision vision 1.06 1.06 Date March 2015 • Description for trip logic revised. Changes • Description for the common function added. • Description for the line measurements function added. © Arcteq Relays Ltd IM00071...
  • Page 6 2.00 2.00 Date February 2023 • Updated the Arcteq logo on the cover. • An overall visual update for the manual's layout and design. • Added the "Safety information" chapter. Changes • Added the previously separate documents "AQ 300 Operator's manual" and "AQ 300 Web server description"...

  • Page 7: Saf Y Informa Ormation Tion

    Please note that although these warnings relate to direct damage to personnel and/or equipment, it should be understood that operating damaged equipment may also lead to further, indirect damage to personnel and/or equipment. Therefore, we expect any user to fully comply with these special messages. © Arcteq Relays Ltd IM00071...

  • Page 8: Abbr Bbre E Via Viations Tions

    C C V V T T capacitive voltage transformer direct current DI DI digital input(s) dead line detection digital output(s) electronic fast transients electromagnetic compatibility Ethernet Overboard electrostatic discharge human—machine interface IDMT IDMT inverse definite minimum time © Arcteq Relays Ltd IM00071...
  • Page 9 SCADA A supervisory control and data acquisition SDRAM synchronous dynamic random access memory single-line diagram SOTF switch-on-to-fault time multiplier setting V V T T voltage transformer V V T T S S voltage transformer supervision © Arcteq Relays Ltd IM00071...

  • Page 10: General

    AQ G357 and AQ G397 contain the same software functionality. Difference is in physical size, AQ G357 is a half 19 inch rack version with limited I/O capability whereas AQ G397 is a full 19 inch rack version offering enhanced I/O capabilities. © Arcteq Relays Ltd IM00071...

  • Page 11: Ied User Interface Erface

    10Base-T Ethernet connection to the user's computer. Touch The main screen, a 3.5" (320 x 240 pixels) portrait-oriented TFT display with a resistive touch screen screen interface. Optionally, the touch screen can be 5.7" and landscape-oriented. © Arcteq Relays Ltd IM00071...

  • Page 12: Led Assignment

    It also supports single-line diagrams (SLD). The touch screen can be accessed and controlled remotely via the device's web interface. For more information on the remote user interface, please refer to "The embedded web server" chapter below. © Arcteq Relays Ltd IM00071...
  • Page 13 Main menu The main menu is the first one shown when the device is turned on. It displays general information such as the device and station names, the current time, and language options (when available). © Arcteq Relays Ltd IM00071...
  • Page 14 (see the image below) where you can enter the password. When the password is entered correctly, the lock status indicator on the main menu becomes unlocked, as does the menu in question. The device can be unlocked from any of the menus. © Arcteq Relays Ltd IM00071...
  • Page 15 The parameter set that is currently active has a red box around it (see the figure below). When you want to edit or activate a parameter set, touching its name to select and highlight it and then press the "Edit" or "Activate" button. © Arcteq Relays Ltd IM00071...
  • Page 16 Back butt t on on returns you to the previous screen. Within all function blocks, the parameter values can have one of the following four types of input: • Integer A whole number, entered with the number pad. © Arcteq Relays Ltd IM00071...
  • Page 17 Make sure that only one person edits the parameters at any one time, either in the touch screen or in the web interface! Simultaneous editing leads to confusion as to what the values of a parameter set actually are. © Arcteq Relays Ltd IM00071...
  • Page 18 This allows you to take a closer look at the events. The first row of an event displays the function block's name, the second row displays the event's name and value, and the third row displays the event's time stamp (see the image below). © Arcteq Relays Ltd IM00071...
  • Page 19 In the system settings menu you can set certain parameter values that are related to the device itself (as opposed to its protection functions and operations). The menu works similarly to the parameters menu and the same properties apply. © Arcteq Relays Ltd IM00071...
  • Page 20 For example, let us say we have the following network depicted in the top-left image in the figure below as a single-line drawing. We have set the operation buttons to function as "ON" and "OFF", and now we would like to switch the line disconnecter Q2 on. © Arcteq Relays Ltd IM00071...

  • Page 21: The Embedded Web Server

    You can perform the following actions with the embedded web server: • modify user parameters • check the event list and disturbance records • manage the password • display the measured data and the generated binary information • perform commands © Arcteq Relays Ltd IM00071...

  • Page 22: Ethernet Connections

    The following table catalogues the different Ethernet communication versions available for the different AQ-300 CPU versions. Table. 5.4.1 - 6. The available Ethernet communication in different CPU versions. CPU version Station Bus Redundant Station Bus Process Bus RJ45 Legacy port/protocol CPU+0001 Prep CPU+0002 Prep CPU+0003 © Arcteq Relays Ltd IM00071...
  • Page 23 IP address, the gateway address, the netmask, the DNS and NTP server addresses. W W eb br eb bro o wser se wser set t tings tings © Arcteq Relays Ltd IM00071...
  • Page 24 As seen in the beginning of this chapter, the CPU version "+0001" also has an integrated RJ4 port. When using a UTP crossover cable with RJ45 connectors at both ends, you can connect the device directly to a computer (see the figure below). © Arcteq Relays Ltd IM00071...
  • Page 25 Please note that the cable's RJ45 connector can also be connected to an Ethernet switch. When this is the case, all the network's IEDs with client functionalities (e.g. a computer) have access to the device. © Arcteq Relays Ltd IM00071...

  • Page 26: Getting Started

    Make sure you are connected to your AQ-300 device and that you have JavaScript enabled within your web browser. Type the IP address of the device into your browser's address bar to access its embedded web server (see the image below). © Arcteq Relays Ltd IM00071...
  • Page 27 The page automatically refreshes in the chosen language. Please note that changing the display language only affects the local browser, NOT other browser or the language of the touch screen. © Arcteq Relays Ltd IM00071...

  • Page 28: Menu Items

    The "Station bus MAC address" displays the network card's MAC address, which is a uniwue identification number assigned by Arcteq (the address range assigned by the IEEE authority). Please note that these fields are read-only and cannot be modified! ©...
  • Page 29 A pop-up window notifies you if you have made changes and try to leave the page without saving them. Clicking Cancel Cancel returns you to the parameter page, whereas clicking OK OK ignores the changes. © Arcteq Relays Ltd IM00071...
  • Page 30 (located below the menu bar on the left) enabled the device to use the values displayed on the screen at the time the button was clicked. Please note that if the device's IP address has changed, the device must first be accessed through the new IP address. © Arcteq Relays Ltd IM00071...
  • Page 31 If the "Time sync warning" parameter is enabled and the device synchronization is not synchronized, an alarm is raised (that is, the "Status" LED becomes yellow). Time zone Contains the settings to offset GMT and to define daylight savings time. settings © Arcteq Relays Ltd IM00071...
  • Page 32 HTML5, analogue measurements are drawn as vectors. Events menu This page displays the events that have occured in the device. The events are listed in the following format: [local time] : [function block] : [channel] : [new value]. © Arcteq Relays Ltd IM00071...
  • Page 33 If the command was unsuccessful, the device gives the reason for the error. Disturbance recorder This page displays a list of the disturbance records that the device has recorded. © Arcteq Relays Ltd IM00071...
  • Page 34 You can also click the V V ie iew w button to open a new browser window which then displays a simple preview of the disturbance record (see the image below). Figure. 5.4.3 - 26. Example of a disturbance record preview. © Arcteq Relays Ltd IM00071...
  • Page 35 Delet t e e button. You can upload a selected file with the Upload Upload button. Please ensure that the file size is below the limit and that you have enough storage left before commencing the upload. © Arcteq Relays Ltd IM00071...
  • Page 36 Figure. 5.4.3 - 30. Password manager. Stat t us/log us/log The Status/log submenu displays information from various logs. The log files are primarily meant for the manufacturer, but a user can also view them. Figure. 5.4.3 - 31. Status/log. © Arcteq Relays Ltd IM00071...
  • Page 37 "Relay DSP firmware" section with a "Comm. DSP firmware" file! This page also displays information about the firmware currently in use as well as of the configuration of the device. © Arcteq Relays Ltd IM00071...

  • Page 38: Troubleshooting

    If you notice improper functionalities, try to clear both the browser history and cache, and refresh the web page. If this does not clear the problem, please contact Arcteq for further instructions. © Arcteq Relays Ltd...

  • Page 39: Soft E Set T Up Up

    Definite time undervoltage protection TUV27N_high U << TOV59N_low U0> Residual voltage protection TOV59N_high U0>> TOV64F3 U0f3> 64F3 100% stator earth fault protection TOF81_high f > Overfrequency protection TOF81_low f >> TUF81_high f < Underfrequency protection TUF81_low f << © Arcteq Relays Ltd IM00071...

  • Page 40: Measurements

    • perform the basic calculations ◦ Fourier basic harmonic magnitude and angle, ◦ True RMS value; • provide the pre-calculated current values to the subsequent software function blocks, • deliver the calculated Fourier basic component values for on-line displaying. © Arcteq Relays Ltd IM00071...
  • Page 41 CT secondary 5A I0CT secondary 1A Phase current CT secondary currents starpoint is towards the line. Figure. 6.2.1 - 34. Example connection with phase currents connectef into summing "Holmgren" connection into the IO residual input. © Arcteq Relays Ltd IM00071...
  • Page 42 Table. 6.2.1 - 14. Floating point parameters of the current input function Parameter name Title Dim. Default Rated primary current of channel1-3 CT4_PriI13_FPar_ Rated Primary I1-3 4000 1000 Rated primary current of channel4 CT4_PriI4_FPar_ Rated Primary I4 4000 1000 © Arcteq Relays Ltd IM00071...

  • Page 43: Voltage Measurement And Scaling

    • perform the basic calculations ◦ Fourier basic harmonic magnitude and angle, ◦ True RMS value; • provide the pre-calculated voltage values to the subsequent software modules, • deliver the calculated basic Fourier component values for on-line displaying. © Arcteq Relays Ltd IM00071...
  • Page 44 Here, the primary rated voltage of the VT must be the value of the rated PHASE-TO-PHASE voltage. This option must not be selected if the distance protection function is supplied from the VT input. © Arcteq Relays Ltd IM00071...
  • Page 45 Rated secondary voltage of the input channels. 100 V or 200V type is selected by parameter setting, no hardware modification is needed. VT4_Type_EPar_ Range Type 100,Type 200 Type 100 Connection of the first three voltage inputs (main VT secondary) © Arcteq Relays Ltd IM00071...
  • Page 46 Fourier basic component of the voltage in channel UL1 Angle Ch - U1 degree Vector position of the voltage in channel UL1 Voltage Ch - U2 V(secondary) Fourier basic component of the voltage in channel UL2 © Arcteq Relays Ltd IM00071...

  • Page 47: Line Measurement

    SCADA system. Operation of the line measurement function block The inputs of the line measurement function are • the Fourier components and true RMS values of the measured voltages and currents • frequency measurement • parameters. © Arcteq Relays Ltd IM00071...
  • Page 48 MXU_U3_OLM_ Voltage L3 MXU_U12_OLM_ Voltage L12 MXU_U23_OLM_ Voltage L23 MXU_U31_OLM_ Voltage L31 MXU_f_OLM_ Frequency Another example is in figure, where the measured values available are shown as on-line information in a configuration for compensated networks. © Arcteq Relays Ltd IM00071...
  • Page 49 Operation Current Off, Amplitude, Integrated Amplitude Selection of the reporting mode for voltage measurement MXU_URepMode_EPar_ Operation Voltage Off, Amplitude, Integrated Amplitude Selection of the reporting mode for frequency measurement MXU_fRepMode_EPar_ Operation Frequency Off, Amplitude, Integrated Amplitude © Arcteq Relays Ltd IM00071...
  • Page 50 MXU_QDeadB_FPar_ Deadband value - Q MVar 100000 0.01 Range value for the reactive power MXU_QRange_FPar_ Range value - Q MVar 100000 0.01 Deadband value for the apparent power MXU_SDeadB_FPar_ Deadband value - S 100000 0.01 © Arcteq Relays Ltd IM00071...
  • Page 51 (deadband*1sec) area. As an example, the figure below shows that the integral of the current in time becomes higher than the Deadband value multiplied by 1sec, this results “report2”, etc. © Arcteq Relays Ltd IM00071...
  • Page 52 Range value for the apparent power MXU_SRange_FPar_ Range value - S 100000 0.01 Deadband value for the current MXU_IDeadB_FPar_ Deadband value - I 2000 Range value for the current MXU_IRange_FPar_ Range value - I 5000 © Arcteq Relays Ltd IM00071...
  • Page 53 0.01 If the reporting time period is set to 0, then no periodic reporting is performed for this quantity. All reports can be disabled for a quantity if the reporting mode is set to “Off”. © Arcteq Relays Ltd IM00071...

  • Page 54: Measurement Connection Examples

    6 Software setup Instruction manual 6.2 Measurements Version: 2.00 6.2.4 Measurement connection examples Connection example with a current breaker Figure. 6.2.4 - 40. Connection example with a current breaker (open and closed connections, CT and VT connection). © Arcteq Relays Ltd IM00071...
  • Page 55 6 Software setup A A Q Q -G3x7 -G3x7 6.2 Measurements Instruction manual Version: 2.00 Connection example with two CTs (facing) Figure. 6.2.4 - 41. Connection example with two CTs facing each other. © Arcteq Relays Ltd IM00071...

  • Page 56: Protection Functions

    The setting value is a parameter, and it can be doubled with dedicated input binary signal. The basic calculation can be based on peak value selection or on Fourier basic harmonic calculation, according to the parameter setting. © Arcteq Relays Ltd IM00071...
  • Page 57 Decision logic module generates the trip signal of the function. In the figure below. is presented the structure of the instantaneous overcurrent algorithm. Figure. 6.3.1 - 44. The structure of the function's algorithm. © Arcteq Relays Ltd IM00071...

  • Page 58: Residual Instantaneous Overcurrent Protection (I0>; 50N/51N)

    The variables in the image above are: • t (seconds) = theoretical operating time if G>G (without additional time delay) • G = measured peak value or Fourier base harmonic of the residual current • G = pick-up setting value © Arcteq Relays Ltd IM00071...

  • Page 59: Three-Phase Time Overcurrent Protection (I>; 50/51)

    Fourier basic harmonic components of the phase currents into the setting value. Decision logic module generates the trip signal of the function. In the figure below is presented the structure of the time overcurrent algorithm. © Arcteq Relays Ltd IM00071...
  • Page 60 • G = measured peak value or Fourier base harmonic of the phase currents • G = pick-up setting value IDMT operating characteristics depend on the selected curve family and curve type. All of the available IDMT characteristics follow © Arcteq Relays Ltd IM00071...
  • Page 61 LTVI (long time, very inverse) 28.55 0.712 IEEE/ANSI LTEI (long time, extremely inverse) 64.07 0.250 In following figures the characteristics of IDMT curves are presented with minimum and maximum pick- up settings in respect of the IED measuring range. © Arcteq Relays Ltd IM00071...
  • Page 62 Figure. 6.3.3 - 49. IEC - NI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. Figure. 6.3.3 - 50. IEC - VI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. © Arcteq Relays Ltd IM00071...
  • Page 63 Figure. 6.3.3 - 51. IEC - EI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. Figure. 6.3.3 - 52. IEC - LTI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. © Arcteq Relays Ltd IM00071...
  • Page 64 Figure. 6.3.3 - 53. IEEE/ANSI - NI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. Figure. 6.3.3 - 54. IEEE/ANSI - MI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. © Arcteq Relays Ltd IM00071...
  • Page 65 Figure. 6.3.3 - 55. IEEE/ANSI - VI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. Figure. 6.3.3 - 56. IEEE/ANSI - EI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. © Arcteq Relays Ltd IM00071...
  • Page 66 Figure. 6.3.3 - 57. IEEE/ANSI - LTI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. Figure. 6.3.3 - 58. IEEE/ANSI - LTVI operating curves with minimum and maximum pick-up settings and TMS settings from 0.05 to 20. © Arcteq Relays Ltd IM00071...
  • Page 67 • G = measured value of the Fourier base harmonic of the phase currents • G = pick-up setting value • TMS = time dial setting / preset time multiplier The parameters and operating curve types follow corresponding standards presented in the table below. © Arcteq Relays Ltd IM00071...
  • Page 68 100 ms Minimum operating delay setting for the IDMT characteristics. Definite 0…60 000 Definite time operating delay setting.This parameter is not in use 100 ms delay time when IDMT characteristics is selected for the operation. © Arcteq Relays Ltd IM00071...

  • Page 69: Residual Time Overcurrent Protection (I0>; 50N/51N)

    Fourier basic harmonic components of the residual current into the setting value. Decision logic module generates the trip signal of the function. In the figure below is presented the structure of the residual time overcurrent algorithm. © Arcteq Relays Ltd IM00071...
  • Page 70 This parameter is in use with definite time and IEC IDMT characteristics. Time multiplier / time dial setting of the IDMT operating Time Mult 0.05…999.0 0.01 1.00 characteristics. This parameter is not in use with definite time characteristics. © Arcteq Relays Ltd IM00071...

  • Page 71: Three-Phase Directional Overcurrent Protection (Idir>; 67)

    If the angle difference between the vectors is outside of the set characteristics the directional decision is “Backward”. © Arcteq Relays Ltd IM00071...
  • Page 72 The default setting of 60 deg means that the total width of the operating angle is 120 deg. Characteristic Characteristic angle setting. Defines the center angle of the 40…90 deg 60 deg angle characteristic. © Arcteq Relays Ltd IM00071...

  • Page 73: Residual Directional Overcurrent Protection (I0Dir>; 67N)

    The inputs of the function are the Fourier basic harmonic components of the zero sequence current and those of the zero sequence voltage. In the figure below is presented the structure of the residual directional overcurrent algorithm. © Arcteq Relays Ltd IM00071...
  • Page 74 “Forward” mode.The protection function supports operating angle mode and also wattmetric and varmetric operating characteristics. © Arcteq Relays Ltd IM00071...
  • Page 75 Angle setting of Characteristic Angle = 0 deg and Operating Angle 30 deg Forward operating characteristic would be area inside +30 deg and –30 deg. Characteristic –180…180 The base angle of the operating characteristics. Angle © Arcteq Relays Ltd IM00071...

  • Page 76: Voltage-Dependent Overcurrent Protection (Iv>; 51V)

    The function can be blocked by a user-defined signal or by the voltage transformer supervision function block, if the measured voltage is not available. This function can be applied as main protection for medium-voltage applications or generator overcurrent protection. © Arcteq Relays Ltd IM00071...
  • Page 77 “SatrtCurrent” value. (No operation is expected if the voltage is above the U_lowlimit” value.) The threshold current is the constant “StartCurrent” value. The voltage controlled characteristic is shown in figure below. © Arcteq Relays Ltd IM00071...
  • Page 78 • The RMS value of the fundamental Fourier component of three phase currents, • The RMS value of the fundamental Fourier component of three phase voltages, • Parameters, • Status signals. The outputs are • The binary output status signals © Arcteq Relays Ltd IM00071...
  • Page 79 Starting of the function in phase L1 Start VOC51_StL2_GrI_ Starting of the function in phase L2 Start VOC51_StL3_GrI_ Starting of the function in phase L3 General VOC51_GenSt_GrI_ Starting of the function Start General VOC51_GenTr_GrI_ Trip command of the function Trip © Arcteq Relays Ltd IM00071...

  • Page 80: Current Unbalance Protection (60)

    The applied method selects maximum and minimum phase currents (fundamental Fourier components). If the difference between them is above the setting limit, the function generates a start signal. Structure of the current unbalance protection function is presented in the figure below © Arcteq Relays Ltd IM00071...
  • Page 81 The function can be disabled by parameter setting, and by an input signal programmed by the user. The trip command is generated after the set defined time delay. © Arcteq Relays Ltd IM00071...

  • Page 82: Negative Sequence Overcurrent Protection (46)

    , fix, according to the preset parameter • G = measured value of the characteristic quantity, Fourier base harmonic of the negative sequence current • G = preset starting value of the characteristic quantity (TOC46_StCurr_IPar_, Start current). © Arcteq Relays Ltd IM00071...
  • Page 83 ANSI LongVeryInv 28.55 0.712 ANSI LongExtInv 64.07 0.250 The end of the effective range of the dependent time characteristics (G ) is: = 20*G Above this value the theoretical operating time is definite (when G>G © Arcteq Relays Ltd IM00071...
  • Page 84 IEC VeryInv Resetting after fix time delay, according to preset parameter TOC46_Reset_TPar_ "Reset delay" IEC ExtInv IEC LongInv ANSI Inv 0.46 ANSI ModInv 4.85 ANSI VeryInv 21.6 ANSI ExtInv 29.1 ANSI LongInv ANSI 13.46 LongVeryInv © Arcteq Relays Ltd IM00071...
  • Page 85 The inputs are • the RMS value of the fundamental Fourier component of the negative sequence component of the phase currents • parameters • status signals. The outputs are • the binary output status signals. © Arcteq Relays Ltd IM00071...
  • Page 86 This module belongs to the preparatory phase. The inputs are the basic Fourier components of the phase currents (IL1Four, IL2Four, IL3Four). The output is the basic Fourier component of the negative sequence current component (INegFour). © Arcteq Relays Ltd IM00071...
  • Page 87 ANSI Inv ANSI Operating mode selection of the function. Can be disabled, ModInv Operation DefinitTime Definite time or IDMT operation into IEC or ANSI/IEEE ANSI standards. VeryInv ANSI ExtInv ANSI LongInv ANSI LongVeryInv ANSI LongExtInv © Arcteq Relays Ltd IM00071...
  • Page 88 Trip command of the function The negative sequence overcurrent protection function has a binary input signal, which serves the purpose of disabling the function. The conditions of disabling are defined by the user, applying the graphic equation editor. © Arcteq Relays Ltd IM00071...

  • Page 89: Circuit Breaker Failure Protection (Cbfp; 50Bf/52Bf)

    “Retrip Time Delay”, a repeated trip command is also generated. The pulse duration of the trip command is shall the time defined by setting the parameter “Pulse length”. The breaker failure protection function can be enabled or disabled by setting the parameter “Operation” to “Off”. © Arcteq Relays Ltd IM00071...
  • Page 90 Time delay for CBFP tripping command for the back-up breakers from Time 200 ms 000 ms the pick-up of the CBFP function monitoring. Delay Pulse 0…60 100 ms CBFP pulse length setting. length 000 ms © Arcteq Relays Ltd IM00071...

  • Page 91: Overvoltage Protection (U>; 59)

    6.3.12 Undervoltage protection (U<; 27) The undervoltage protection function measures three voltages. If any of them is below the set pick-up value and above the defined minimum level, then a start signal is generated for the phases individually. © Arcteq Relays Ltd IM00071...

  • Page 92: Residual Overvoltage Protection (U0>; 59N)

    6.3.13 Residual overvoltage protection (U0>; 59N) The residual definite time overvoltage protection function operates according to definite time characteristics, using the RMS values of the fundamental Fourier component of the zero sequence voltage (UN=3Uo). © Arcteq Relays Ltd IM00071...

  • Page 93: Harmonic Undervoltage Protection (64H)

    (generator and transformer earth capacitance, etc.). As a consequence, in normal, symmetric operation a certain amount of third harmonic voltage can be measured in the neutral of the generator. © Arcteq Relays Ltd IM00071...
  • Page 94 = setting value of the characteristic quantity. Structure of third harmonic undervoltage protection Figure below shows the structure of the definite time third harmonic undervoltage protection (HIZ64) algorithm. Figure. 6.3.14 - 87. Structure of third harmonic undervoltage protection. The inputs are © Arcteq Relays Ltd IM00071...
  • Page 95 The function block of third harmonic undervoltage protection function is shown in figure below. All binary input and output status signals applicable in the AQtivate 300 software are explained below. Figure. 6.3.14 - 89. The function block of the harmonic undervoltage protection function with offset characteristic. © Arcteq Relays Ltd IM00071...

  • Page 96: Thermal Overload Protection (T>; 49)

    The ambient temperature can be set manually. If the calculated temperature (calculated “overtemperature”+ambient temperature) is above the threshold values, status signals are generated: Alarm temperature, Trip temperature and Unlock/restart inhibit temperature. Figure. 6.3.15 - 90. The principal structure of the thermal overload function. © Arcteq Relays Ltd IM00071...
  • Page 97 25 deg Setting of the ambient temperature of the protected device. temperature On device restart starting used thermal load setting. When the Startup 0…60 % device is restarted the thermal protection function will start Term calculating the thermal replica from this starting value. © Arcteq Relays Ltd IM00071...

  • Page 98: Generator Differential Protection (87G)

    The result of this calculation is needed for the differential characteristic evaluation. • Differential characteristics This module performs the necessary calculations for the evaluation of the percentage differential characteristics. © Arcteq Relays Ltd IM00071...
  • Page 99 F se harmonic Fourier components of these curr ourier components of these currents ents: : The base harmonic Fourier components of the network side: © Arcteq Relays Ltd IM00071...
  • Page 100 Dim. Explanation Idiff. L1 In % The calculated differential current in phase L1 Idiff. L2 In % The calculated differential current in phase L2 Idiff. L3 In % The calculated differential current in phase L3 © Arcteq Relays Ltd IM00071...
  • Page 101 L2 (after vector group compensation) Start of the restrained differential protection function is phase L3 DIF87G_L3St_GrI_ Start L3 (after vector group compensation) DIF87G_GenSt_GrI_ General Start General start of the restrained differential protection function Unrestrained differential protection function © Arcteq Relays Ltd IM00071...

  • Page 102: Overfrequency Protection (F>; 81O)

    Pick-up setting of the function. When the measured frequency Start 40.00…60.00 0.01 51 Hz value exceeds the setting value function initiates "Start" frequency signal. 0…60 000 Operating time delay setting for the “Trip” signal from Time delay 200 ms the“Start” signal. © Arcteq Relays Ltd IM00071...

  • Page 103: Underfrequency Protection (F<; 81U)

    Accurate frequency measurement is also the criterion for the synchro-switch function. © Arcteq Relays Ltd IM00071...

  • Page 104: Directional Overpower Protection (P>; 32O)

    “Direction angle”. The over-power function operates if the angle of the S-SS vector related to the directional line is below 90 degrees and above -90 degrees. At operation, the “Start power” value is decreased by a hysteresis value. © Arcteq Relays Ltd IM00071...
  • Page 105 The function can be enabled or disabled (BLK input signal). The status signal of the VTS (voltage transformer supervision) function can also disable the directional operation. The outputs are • The binary output status signals. Software modules of the function block are as follows: P P -Q Calcula -Q Calculation tion © Arcteq Relays Ltd IM00071...
  • Page 106 Explanation DOP32_GenSt_GrI_ General Start General start signal of the function DOP32_GenTr_GrI_ General Trip Trip command of the function DOP32_VTS_GrO_ Bloc from VTS Blocking signal from the voltage transformer supervision function DOP32_Blk_GrO_ Block General blocking signal © Arcteq Relays Ltd IM00071...

  • Page 107: Directional Underpower Protection (P<; 32U)

    90 degrees or below -90 degrees, i.e. if the point S is on the “Operate” side of the P-Q plane. At operation, the “Start power” value is increased by a hysteresis value. © Arcteq Relays Ltd IM00071...
  • Page 108 UL3) • Parameters • Status signals. The function can be enabled or disabled (BLK input signal). The status signal of the VTS (voltage transformer supervision) function can also disable the directional operation. The outputs are © Arcteq Relays Ltd IM00071...
  • Page 109 Explanation DUP32_GenSt_GrI_ General Start General start signal of the function DUP32_GenTr_GrI_ General Trip Trip command of the function DUP32_VTS_GrO_ Block from VTS Blocking signal from the voltage transformer supervision function DUP32_Blk_GrO_ Block General blocking signal © Arcteq Relays Ltd IM00071...

  • Page 110: Impedance Protection (Z<; 21)

    The distance protection function provides main protection for overhead lines and cables of solidly grounded networks. Its main features are as follows: • A full-scheme system provides continuous measurement of impedance separately in three independent phase-to-phase measuring loops as well as in three independent phase-to-earth measuring loops. © Arcteq Relays Ltd IM00071...
  • Page 111 These equations are summarized in table below for different types of faults. The result of this calculation is the positive sequence impedance of the fault loop, including the positive sequence fault resistance at the fault location. © Arcteq Relays Ltd IM00071...
  • Page 112 General me General method of c thod of calcula alculation of the impedances of the fa tion of the impedances of the fault loops ult loops The numerical processes apply the following simple model. © Arcteq Relays Ltd IM00071...
  • Page 113 = the positive sequence inductance of the line or cable section between the fault location and the relay location = the faulty phase the sampled value of the zero sequence current of the projected object α = (R –R )/3R α = (L –L )/3L = (X –X )/3X © Arcteq Relays Ltd IM00071...
  • Page 114 Measured positive sequence impedance in the L2N loop RL3+j XL3 Measured positive sequence impedance in the L3N loop RL1L2+j XL1L2 Measured positive sequence impedance in the L1L2 loop RL2L3+j XL2L3 Measured positive sequence impedance in the L2L3 loop © Arcteq Relays Ltd IM00071...
  • Page 115 Table. 6.3.22 - 59. Internal logic parameters of the impedance calculation. Parameter Explanation This logic variable is true if no directionality is programmed, i.e. the IMP21_Zn_EPar_(Operation) P_nondir_ parameter is set to "NonDirectional" . © Arcteq Relays Ltd IM00071...
  • Page 116 R = 1 000 500 mΩ, X = 1 000 500 mΩ The impedance c The impedance calcula alculation me tion methods thods The short explanation of the internal logic for the impedance calculation is as follows: Calculation method Calc(A): © Arcteq Relays Ltd IM00071...
  • Page 117 If the voltage is not sufficient for a directional decision and no stored voltage samples are available, the impedance is set to a high value: R = 1 000 500, X = 1 000 500 Offset circle characteristics The operate decision is based on offset circle characteristics. © Arcteq Relays Ltd IM00071...
  • Page 118 Parameter settings decide the size and the position of the circle. Optionally, the center of the circle can be the origin of the impedance plane or the circle can be shifted along an impedance lime. The possibilities are shown in figures below. • Off • NoCompound • FWCompound • BWCompound © Arcteq Relays Ltd IM00071...
  • Page 119 The procedure is processed for each line-to-ground loop and for each line-to-line loop. The result is the setting of 6 status variables. This indicates that the calculated impedance is within the processed “offset circle” characteristics. © Arcteq Relays Ltd IM00071...
  • Page 120 The impedance in the fault loop L2N is inside the characteristics ZL3_n 1…5 The impedance in the fault loop L3N is inside the characteristics ZL1L2_n 1…5 The impedance in the fault loop L1L2 is inside the characteristics © Arcteq Relays Ltd IM00071...
  • Page 121 • the currents in all three phases are above the setting limit, then a three-phase fault is detected and no further check is performed. The three-phase fault detection resets only if none of the three line- to-line loops detect fault any longer. © Arcteq Relays Ltd IM00071...
  • Page 122 Figure below explains the detection of a phase-to-phase fault between phases “L1” and “L2”: • no fault is detected in the previous sequential tests • the start of the polygon impedance logic in loop “L1L2” detects the lowest reactance and © Arcteq Relays Ltd IM00071...
  • Page 123 The “L1L2” fault detection resets only if none of the “L1L2” line-to-line, “L1N” or “L2N” loops detect fault any longer. In all figures: minLL = Minimum(ZL1L2, ZL2L3, ZL3L1) Figure. 6.3.22 - 107. L1L2 fault detection in Zone "n" (n=1…5). Figure. 6.3.22 - 108. L2L3 fault detection in Zone "n" (n=1…5). © Arcteq Relays Ltd IM00071...
  • Page 124 The calculated impedance of the fault loop L2N is within the characteristic The calculated impedance of the fault loop L3N is within the characteristic IMP21_cIL1_GrI The current in phase L1 is sufficient for impedance calculation © Arcteq Relays Ltd IM00071...
  • Page 125 • The minimal impedance of the phase-to-ground loop is less than the minimal impedance in the phase-to-phase loops. In the figure below: minLN = Minimum(ZL1N, ZL2N, ZL3N) Figure. 6.3.22 - 110. L1N fault detection in Zone "n" (n=1…5). Figure. 6.3.22 - 111. L2N fault detection in Zone "n" (n=1…5) © Arcteq Relays Ltd IM00071...
  • Page 126 The calculated impedance of the fault loop L3L1 is the smallest one 1…5 ZL1_n The calculated impedance of fault loop L1N is within the zone characteristic 1…5 ZL2_n The calculated impedance of fault loop L3N is within the zone characteristic 1…5 © Arcteq Relays Ltd IM00071...
  • Page 127 IMP21_ StOnly_BPar. The time delay is set by the timer parameter IMP21_Z-Del_TPar. Table. 6.3.22 - 73. General phase identification of the distance protection function. Binary output signal Signal title Explanation Impedance Phase identification © Arcteq Relays Ltd IM00071...
  • Page 128 (see figure below). The minimal setting current IMP21_IoBase_IPar_ (Io Base sens.) and a percentage biasing IMP21_IoBias_IPar_ (Io bias) must be set. The biasing is applied for the detection of zero sequence current in the case of increased phase currents. © Arcteq Relays Ltd IM00071...
  • Page 129 5…30 % 10 % fault detection. PsImpAng 0…90 deg 1 deg 10 deg Positive impedance angle OfsImpRch –150.00…150.00 Ω 0.01 Ω 0.00 Ω Offset impedance reach 0.10…250.00 Ω 0.01 Ω 0.00 Ω PsImpRch Positive impedance reach © Arcteq Relays Ltd IM00071...

  • Page 130: Loss Of Excitation (40)

    • Binary input signals and conditions can influence the operation: ◦ Blocking/enabling. ◦ VT failure signal. Structure of loss of excitation protection function Figure below shows the structure of the loss of excitation protection function with compounded circular characteristic. © Arcteq Relays Ltd IM00071...
  • Page 131 Reference source not found.. The result of this calculation s the positive sequence impedance of the measuring loops. Table. 6.3.23 - 76. Formulas for the calculation of the impedances in the loops. Loop Calculation of Z L1L2 = (U –U )/(I –I L1L2 © Arcteq Relays Ltd IM00071...
  • Page 132 Figure below shows the principal scheme of the impedance calculation Z_CALC. Figure. 6.3.23 - 117. Principal scheme of the impedance calculation Z_CALC. The inputs are: • The Fourier components of the three phase voltages © Arcteq Relays Ltd IM00071...
  • Page 133 R and negative X quadrant of the impedance plane. The R offset and X offset values are defined to be positive in this quadrant. Figure. 6.3.23 - 118. Offset characteristics. If a measured impedance point is inside the circle, the algorithm generates the true value of the related output binary signal. © Arcteq Relays Ltd IM00071...
  • Page 134 The impedance in the measuring loop L1L2 is inside the characteristics of stage 2 ZL2L3_2 The impedance in the measuring loop L2L3 is inside the characteristics of stage 2 ZL3L1_2 The impedance in the measuring loop L3L1 is inside the characteristics of stage 2 © Arcteq Relays Ltd IM00071...
  • Page 135 Table. 6.3.23 - 82. Binary output status signals. Binary status signal Title Explanation UEX_40Z_Blk Blk_GrO_ Block Blocking of the underexcitation protection function Block from Blocking of the underexcitation protection function from the VT UEX_40Z_V V T T SBlk SBlk_GrO_ supervision function © Arcteq Relays Ltd IM00071...
  • Page 136 OfsImpRch –150.00…150.00 Ω 0.01 Ω 0.00 Ω Offset impedance reach 0.10…250.00 Ω 0.01 Ω 0.00 Ω PsImpRch Positive impedance reach Zone1 (Xo- The zero sequence current compensation factor, 0.00…5.00 0.01 0.00 X1)/3X1 calculated with X values. © Arcteq Relays Ltd IM00071...

  • Page 137: Overexcitation (V/H>; 24)

    “constant” value. If the generator is excited in this state and the frequency is below the rated value, then the flux may increase above the tolerated value. Similar problems may occur in distributed generating stations in case of island operation. © Arcteq Relays Ltd IM00071...
  • Page 138 Operat t e time e time Figure. 6.3.24 - 121. Overexcitation independent time characteristic. where: t(G) = t (when G>G (seconds) = the theoretical operating time G>G , fix, according to the parameter setting (VPH24_MinDel_TPar_, Min. Time Delay) © Arcteq Relays Ltd IM00071...
  • Page 139 TMS = 1…60, time multiplier setting U/f = flux value calculated at the measured voltage and frequency = flux at rated voltage and rated frequency = flux setting value. Figure. 6.3.24 - 122. IEEE standard dependent time characteristics. © Arcteq Relays Ltd IM00071...
  • Page 140 Thus the calculated flux cannot be less then the real flux value. The protection operates with increased security. Structure of the overexcitation protection function Figure below shows the structure of the overexcitation protection (VPH24) algorithm. © Arcteq Relays Ltd IM00071...
  • Page 141 This module calculates the required time delay based on the magnitude of the flux and the parameter settings. • Decision logic The decision logic module combines the status signals to generate the trip command of the function. © Arcteq Relays Ltd IM00071...
  • Page 142 Operating mode selection for the function. Operation can be either Operation time time disabled “Off” or definite time or IEEE inverse characteristics. IEEE 80…140 Start U/f 110 % Pick-up setting of the function Time 1…100 Time multiplier for inverse time characteristics multiplier © Arcteq Relays Ltd IM00071...

  • Page 143: Pole Slip (78)

    “Pole slipping” as it is indicated in figure below on the impedance plane. (The stable swings return to the same quadrant of the impedance plane along lines “Stable swing”.) Figure. 6.3.25 - 127. Pole slipping. © Arcteq Relays Ltd IM00071...
  • Page 144 Figure. 6.3.25 - 128. Structure of the pole slipping algorithm. The inputs are • the Fourier components of three phase voltages • the Fourier components of three phase currents • binary inputs • parameters. The outputs are © Arcteq Relays Ltd IM00071...
  • Page 145 The following description explains the details of the individual components. Impedance calculation (Z_CALC) The impedance protection supplied by Arcteq Ltd. continuously measures the impedances in the three line-to-line measuring loops. The calculation is performed in the phase-to-phase loops based on the line-to-line voltages and the difference of the affected phase currents.
  • Page 146 Measured positive sequence impedance in the L3L1 loop Z_CALC includes three practically identical software modules for impedance calculation. The three routines for the phase-to-phase loops get line-to-line voltages calculated from the sampled phase voltages and they get differences of the phase currents. © Arcteq Relays Ltd IM00071...
  • Page 147 (“Dead time”).The procedure is processed for each line-to-line loop. The result is the setting of three internal status variables. This indicates that the calculated impedance performed the required number of pole slips. Figure. 6.3.25 - 131. Principal scheme of the quadrilateral characteristic decision. Input v Input val alues © Arcteq Relays Ltd IM00071...
  • Page 148 The trip logic module decides to generate the trip command. The condition is that at least two out of three phase-to-phase loops detect pole slip in a number required by parameter setting. And the function is not blocked or disabled. © Arcteq Relays Ltd IM00071...
  • Page 149 The current in phase L1 is sufficient for impedance calculation I L2 condition The current in phase L2 is sufficient for impedance calculation I L3 condition The current in phase L3 is sufficient for impedance calculation © Arcteq Relays Ltd IM00071...

  • Page 150: Inrush Current Detection (68)

    Step Default Description range Current Operating mode selection for the function. Operation can be either Operation Contact Current disabled “Off” or monitoring either measured current or contact status Current/ or both current and contact status. Contact © Arcteq Relays Ltd IM00071...

  • Page 151: Control, Monitoring And Measurements

    ◦ The list of the sources of the LED reset commands can be extended using the Common function block. This additional signal is programmed by the user with the help of the graphic logic editor. © Arcteq Relays Ltd IM00071...
  • Page 152 ExtLoc2 Input2 to set the state of group 2 to Local Common_ExtRem2_GrO_ ExtRem2 Input2 to set the state of group 2 to Remote Common_ExtLoc3_GrO_ ExtLoc3 Input3 to set the state of group 3 to Local © Arcteq Relays Ltd IM00071...
  • Page 153 Local/Remote state. Table. 6.4.1 - 101. Setting parameters. Setting value/ Parameter Description range Ext LR "0" means no external local/remote setting is enabled, the local LCD touch-screen Source is the only source of toggling. © Arcteq Relays Ltd IM00071...

  • Page 154: Trip Logic (94)

    (for high voltage side and low voltage side). After connecting the trip signals into trip logic block the activation of trip contacts have to be assigned. The trip assignment is done in Software configuration → Trip signals → Trip assignment. © Arcteq Relays Ltd IM00071...
  • Page 155 Table. 6.4.2 - 102. Setting parameters of the trip logic function. Setting Parameter Step Default Description value/range Operating mode selection for the function. Operation can be either Operation disabled "Off" or enabled "On". Min pulse 50…60 000 Minimum duration of the generated tripping impulse. length © Arcteq Relays Ltd IM00071...

  • Page 156: Dead Line Detection (Dld)

    AQtivate 300 software. Figure. 6.4.3 - 139. The function block of the dead line detection function. The binary input and output status signals of the dead line detection function are listed in tables below. © Arcteq Relays Ltd IM00071...

  • Page 157: Voltage Transformer Supervision (Vts)

    The voltage transformer supervision function can be used for either tripping or alarming purposes. The voltage transformer supervision function can be used in three different modes of application: © Arcteq Relays Ltd IM00071...
  • Page 158 100 ms, then the “VTS failure” signal resets. Figure. 6.4.4 - 140. Operation logic of the voltage transformer supervision and dead line detection. The voltage transformer supervision logic operates through decision logic presented in the following figure. © Arcteq Relays Ltd IM00071...
  • Page 159 Table. 6.4.4 - 106. The binary input and output signals of the VTS function. Binary status Title Explanation signal Output status defined by the user to disable the voltage transformer supervision VTS_Blk_GrO_ function VTS_Fail_GrI_ Failure status signal of the VTS function Failure © Arcteq Relays Ltd IM00071...

  • Page 160: Current Transformer Supervision (Cts)

    The binary input and output status signals of the dead line detection function are listed intables below. Table. 6.4.5 - 108. The binary input and output status signals. Binary status signal Title Explanation CTSuperV_Blk Blk_GrO_ Block Blocking of the function © Arcteq Relays Ltd IM00071...

  • Page 161: Voltage Variation (Voltage Sag And Swell)

    • Voltage interruption, when the RMS value of the measured voltage is below a minimum level specified by a parameter. For the evaluation, the duration of the voltage interruption should be between a minimum and a maximum time value defined by parameters. Figure. 6.4.6 - 146. Voltage interruption. © Arcteq Relays Ltd IM00071...
  • Page 162 The sag and swell detection algorithm offers measured values, status signals and counter values for displaying: • The duration of the latest detected short-time voltage variation • Binary signals: ◦ Swell ◦ Sag ◦ Interruption • Timer values: ◦ Sag counter ◦ Swell counter © Arcteq Relays Ltd IM00071...

  • Page 163: Disturbance Recorder

    The pre-fault time, max-fault time and post-fault time can be defined by parameters. © Arcteq Relays Ltd IM00071...
  • Page 164 Downloading can be initiated from a web browser tool or from the software tools.This procedure assures that the three component files (.cfg, .dat and .inf) are stored in the same location. The evaluation can be performed using any COMTRADE evaluator software, e.g. Arcteq’s AQview software. Consult your nearest Arcteq representative for availability.

  • Page 165: Event Recorder

    (TOC67) hig OC67) high h se set t ting sta ting stage Start L1 Start signal in phase L1 Start L2 Start signal in phase L2 Start L3 Start signal in phase L3 Start Start signal © Arcteq Relays Ltd IM00071...
  • Page 166 Low setting stage start signal in phase L2 Low Start L3 Low setting stage start signal in phase L3 Low General Start Low setting stage general start signal Low General Trip Low setting stage general trip command © Arcteq Relays Ltd IM00071...
  • Page 167 The function releases manual close command In progress Man The manual close command is in progress Close_Man Close command in manual mode of operation A A ut utoma omatic r tic reclosing function (REC79) eclosing function (REC79) © Arcteq Relays Ltd IM00071...
  • Page 168 Close command is enabled Enable Open Open command is enabled Local Local mode of operation Operation counter Operation counter DC OPCap D D isconnect isconnector Ear or Earth th Status value Status of the earthing switch © Arcteq Relays Ltd IM00071...

  • Page 169: Measured Values

    RMS value of the Fourier fundamental harmonic current component in phase L1 Angle Ch – I1 Phase angle of the Fourier fundamental harmonic current component in phase L1* Current Ch – I2 RMS value of the Fourier fundamental harmonic current component in phase L2 © Arcteq Relays Ltd IM00071...
  • Page 170 True RMS value of the voltage in phase L3 Voltage L12 True RMS value of the voltage in phase L1L2 Voltage L23 True RMS value of the voltage in phase L2L3 Voltage L31 True RMS value of the voltage in phase L3L1 © Arcteq Relays Ltd IM00071...

  • Page 171: Status Monitoring For Switching Devices

    All four fast acting trip contacts contain build-in trip circuit supervision function. The output voltage of the circuit is 5V (+-1V). The pickup resistance is 2.5kohm (+-1kohm). CAUTION! UTION! Pay attention to the polarity of the auxiliary voltage supply as outputs are polarity dependent. © Arcteq Relays Ltd IM00071...

  • Page 172: Sy Y St Stem Int 7 S Em Integra Egration Tion

    The AQ G357 generator protection IED communicates using IEC 61850, IEC 101, IEC 103, IEC 104, Modbus RTU, DNP3.0 and SPA protocols. For details of each protocol refer to respective interoperability lists. For IRIG-B time synchronization binary input module O12 channel 1 can be used. © Arcteq Relays Ltd IM00071...

  • Page 173: Connections

    A A Q Q -G3x7 -G3x7 8.1 Block diagram Instruction manual Version: 2.00 8 Connections 8.1 Block diagram Block diagram of AQ-G397 with typical options Figure. 8.1 - 150. Block diagram of AQ-G397 with typical options installed. © Arcteq Relays Ltd IM00071...

  • Page 174: Connection Example

    A A Q Q -G3x7 -G3x7 8 Connections Instruction manual 8.2 Connection example Version: 2.00 8.2 Connection example Figure. 8.2 - 151. Connection example of AQ-G357 generator protection IED. © Arcteq Relays Ltd IM00071...

  • Page 175: Construction And Installation Tion

    9 Construction and installation 9.1 Construction The Arcteq AQ-G357 generator protection IED consists of hardware modules. Due to modular structure optional positions for the slots can be user defined in the ordering of the IED to include I/O modules and other types of additional modules. An example module arrangement configuration of the AQ-G357 is shown in the figure below.

  • Page 176: Power Supply Module

    • Efficiency: >70 %. • Passive heat sink cooling. • Early power failure indication signals to the CPU the possibility of power outage, thus the CPU has enough time to save the necessary data to non-volatile memory. © Arcteq Relays Ltd IM00071...

  • Page 177: Binary Input Module(S)

    • Rated input voltage: 110/220 V DC. • Clamp voltage: falling 0.75 Un, rising 0.78 Un. • Digitally filtered per channel. • Current drain approx.: 2 mA per channel. • 12 inputs. • IRIG-B timing and synchronization input. © Arcteq Relays Ltd IM00071...

  • Page 178: Binary Output Module(S)

    The binary output modules are: • Rated voltage: 250 V AC/DC. • Continuous carry: 8 A. • Breaking capacity, (L/R = 40 ms)at 220 V DC: 0.2 A • 8 contacts: 7 NO and 1 NC © Arcteq Relays Ltd IM00071...

  • Page 179: Tripping Module

    • Rated voltage: 110 V, 220 V DC. • Continuous carry: 8 A. • Making capacity: 0.5 s, 30 A. • Breaking capacity (L/R = 40 ms) at 220 V DC: 4A. • Trip circuit supervision for each trip contact. © Arcteq Relays Ltd IM00071...

  • Page 180: Voltage Measurement Module

    • Power consumption of voltage input: ≤1 VA at 200 V (with special CVT module the burden is < 50 mVA for VT4 channel). • Relative accuracy: ±0.5 %. • Frequency measurement range: ±0.01 % at Ux 25 % of rated voltage. • Measurement of phase angle: 0.5º Ux 25 % of rated voltage. © Arcteq Relays Ltd IM00071...

  • Page 181: Current Measurement Module

    • Thermal withstand: ◦ 20 A (continuously) ◦ 500 A (for 1 s) ◦ 1200 A (for 10 ms) • Relative accuracy: ±0.5 %. • Measurement of phase angle: 0.5º, Ix 10 % rated current. © Arcteq Relays Ltd IM00071...

  • Page 182: Installation And Dimensions

    A A Q Q -G3x7 -G3x7 9 Construction and installation Instruction manual 9.9 Installation and dimensions Version: 2.00 9.9 Installation and dimensions Figure. 9.9 - 159. Dimensions of AQ-x35x IED. © Arcteq Relays Ltd IM00071...
  • Page 183 9 Construction and installation A A Q Q -G3x7 -G3x7 9.9 Installation and dimensions Instruction manual Version: 2.00 Figure. 9.9 - 160. Panel cut-out and spacing of AQ-x35x IED. © Arcteq Relays Ltd IM00071...

  • Page 184: Technic Echnical Da Al Data Ta

    Peak value calculation Fourier calculation Three-phase time overcurrent protection I> (50/51) Pick-up current inaccuracy < 2% Operation time inaccuracy ±5% or ±15ms Reset ratio 0.95 Minimum operating time with IDMT 35ms Reset time Approx 35ms Transient overreach © Arcteq Relays Ltd IM00071...
  • Page 185 Reset ratio 0.95 Minimum operating time with IDMT 35ms Reset time Approx 35ms Transient overreach Pickup time 25 – 30ms Angular inaccuracy <3° Residual directional overcurrent protection function I0Dir> (67N) Pick-up current inaccuracy < 2% © Arcteq Relays Ltd IM00071...
  • Page 186 Pick-up starting inaccuracy < 0.5 % Reset time: 50 ms • U> → Un 40 ms • U> → 0 Operate time inaccuracy +15 ms Residual overvoltage protection function U0> (59N) Pick-up starting inaccuracy < 0,5 % © Arcteq Relays Ltd IM00071...
  • Page 187 Thermal overload protection function T> (49) Operation time inaccuracy at I> 1.2*Itrip 3 % or +20 ms Overexcitation/volts per hertz protection V/Hz, (24) Frequency range 10…70Hz Voltage range 10…170V secondary Voltage measurement inaccuracy <1% (0.5 – 1.2xUn) © Arcteq Relays Ltd IM00071...
  • Page 188 0.1 - 200 Ohm In= 1A 0.1 – 40 Ohm In=5A Impedance calculation angular inaccuracy ±3° Instant operate time Typically 25ms Operate time inaccuracy ±3% or 15ms Minimum operate time <20ms Reset time 16 – 25ms © Arcteq Relays Ltd IM00071...
  • Page 189 Zone angular inaccuracy ±3° Operate time Typically 25ms Operate time inaccuracy ±3% or 15ms Minimum operate time <20ms Reset time 16 – 25ms Reset ratio Inrush current detection function INR2, (68) Current inaccuracy <2 % © Arcteq Relays Ltd IM00071...

  • Page 190: Control Functions

    <20 ms Reset ratio 0.95 Voltage variation (sag and swell) Voltage measurement inaccuracy ±1 % of Un Timer inaccuracy ±2 % of setting value or ± 20 ms Dead line detectioin (DLD) Pick-up voltage inaccuracy © Arcteq Relays Ltd IM00071...

  • Page 191: Hardware

    ± 1 (> 0.5In) with 1A rated current ± 1 digit ± 1 (> 0.4In) with 5A rated current Voltage measurement module Rated voltage Un 100/√3, 100V, 200/√3, 200V (parameter settable) Number of channels per module 50Hz Rated frequency 60Hz (ordering option) © Arcteq Relays Ltd IM00071...

  • Page 192: Tests And Environmental Conditions

    Number of outputs per module Continuous carry Making capacity 30A (0.5s) Breaking capacity 4A (L/R=40ms, 220Vdc) 10.5 Tests and environmental conditions Disturbance tests CE approved and tested according to EN EMC test 50081-2, EN 50082-2 © Arcteq Relays Ltd IM00071...
  • Page 193 IP 54 (with optional cover) 5kg net (AQ-x35x devices) 6kg net (AQ-x39x devices) Weight 6kg with package (AQ-x35x devices) 7kg with package (AQ-x39x devices) Environmental conditions Specified ambient service temp. range -10…+55°C Transport and storage temp. range -40…+70°C © Arcteq Relays Ltd IM00071...

  • Page 194: Ordering Inf Dering Informa Ormation Tion

    A A Q Q -G3x7 -G3x7 11 Ordering information Instruction manual 10.5 Tests and environmental conditions Version: 2.00 11 Ordering information Visit https://configurator.arcteq.fi/ to build a hardware configuration, define an ordering code and get a module layout image. © Arcteq Relays Ltd IM00071...

  • Page 195: 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 IM00071...

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