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Arcteq AQ-F255 Instruction Manual

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Summary of Contents for Arcteq AQ-F255

  • Page 1 AQ-F255 Feeder protection IED Instruction manual  ...

  • Page 2: Table Of Contents

    5.1. Functions included in AQ-F255 ........

  • Page 3: Table Of Contents

    7.1. Connections AQ-F255 ........

  • Page 4: Table Of Contents

    11. Contact and reference information ..........© Arcteq Relays Ltd...
  • 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 ful l the aforementioned requirements.
  • Page 6 AQ-F255 Instruction manual Version: 2.00 Copyright Copyright © Arcteq Relays Ltd. 2018. All rights reserved. © Arcteq Relays Ltd...

  • Page 7: Manual Revision Notes

    - Added General-menu description. 1.2. Version 1 revision notes Revision 1.00 Date 8.4.2013 Changes -       The rst revision for AQ-F255 IED Revision 1.01 Date 9.2.2017 -       Order code upgraded Changes -       Programmable stage description added Revision 1.02...

  • Page 8: Abbreviations

    RMS – Root mean square SF – System failure TMS – Time multiplier setting TRMS – True root mean square VAC – Voltage alternating current VDC – Voltage direct current SW – Software uP - Microprocessor © Arcteq Relays Ltd...

  • Page 9: General

    Version: 2.00 3. General AQ-F255 Feeder Protection IED is a member of the AQ-200 product line. The AQ-200 protection product line in respect of hardware and software is a modular concept. The hardware modules are assembled and con gured according to the application IO requirements and the software determines the available functions.

  • Page 10: Ied User Interface

    Used views are freely con gurable with buttons for changing settings groups or controlling the relays logic in general. Object status (Circuit breaker/Disconnector) can be displayed on the screen. All measured and calculated values (currents, voltages, power, energy, frequency etc.) can be shown in the screen. © Arcteq Relays Ltd...

  • Page 11: User Level Password Con Guration

    Con gurator: Can change most settings like basic protection pick-up levels or time delays, breaker control functions, signal descriptions etc. Can operate breakers or other equipment. Super user: Access to change any setting and can operate breakers or other equipment. © Arcteq Relays Ltd...

  • Page 12: Functions

    Instruction manual Version: 2.00 5. Functions 5.1. Functions included in AQ-F255 This chapter presents the functions of AQ-F255 Feeder Protection relay. AQ-F255 includes following functions and amounts of instances of the functions. Table. 5.1. - 1. Protection functions of AQ-F255 Name...

  • Page 13: Measurements

    Rate of change of frequency (8 stages) VJP1 Vector jump ∆φ PGS1 PGx >/< Programmable stage ARC1 IArc>/I0Arc> 50Arc/50NArc Arc protection (Option) Table. 5.1. - 2. Control functions of AQ-F255 Name ANSI Description Set group settings Object control 0 → 1 Autoreclosing function CLPU Cold load pick-up...
  • Page 14 0.2 A in some cases. In following chapter is an example for setting the scaling of the current measurements to the example current transformer and system load. © Arcteq Relays Ltd...
  • Page 15 CT primary value should be the base for per unitizing. If the per unit scaling is wanted to be according to the CT values then “Scale meas to In” is set to “CT nom p.u.” As presented in the gure below. © Arcteq Relays Ltd...
  • Page 16 If the settings would be wanted to be scaled to load nominal then the selection “Scale meas to In” would be set to “Object In p.u.” Figure. 5.2.1. - 5. Phase current transformer scalings to protected object nominal current. © Arcteq Relays Ltd...
  • Page 17 Figure. 5.2.1. - 7. Residual current I02 scaling to ring core CT input. If the scaling was made to CT primary or to object nominal current the measurements will look as follows with nominal current feeding: Figure. 5.2.1. - 8. Scalings to CT nominal. © Arcteq Relays Ltd...
  • Page 18 Figure. 5.2.1. - 10. If zero sequence current transformer is used it should be connected to I02 channel which has lower CT scaling ranges. Figure. 5.2.1. - 11. Setting example of zero sequence current transformer application. © Arcteq Relays Ltd...
  • Page 19 Phase unbalance protection trips immediately when it is activated. Earth fault protection trips immediately when it is activated. In following rows few most common cases are presented. © Arcteq Relays Ltd...
  • Page 20 I2: 0.67 xIn / 60.00 deg I0Calc: 0.67 xIn / -60.00 deg Resolution: - Change wires to opposite in CT module connectors 5 – 6 - Or from the Transformers, Phase CT scaling select IL3 polarity to “Invert”. © Arcteq Relays Ltd...
  • Page 21 IL3: 1.00 xIn / 240.00 deg Sequence currents I1: 0.00 xIn / 0.00 deg I2: 1.00 xIn / 0.00 deg I0Calc: 0.00 xIn / 0.00 deg Resolution: -  Change wires to opposite in CT module connectors 1 - 5 © Arcteq Relays Ltd...
  • Page 22 P/S /secondary current ratio Table. 5.2.1. - 9. Settings of the residual I02 CT scaling. Name Range Step Default Description I02 CT 0.2… 0.00001A 100.0A Rated primary current of the CT in amperes. primary 25000.0A © Arcteq Relays Ltd...
  • Page 23 Per unit measurement from calculated I0 current fundamental frequency RMS Calculated I0 0.01xIn 1250.0xIn current. Per unit measurement from I01 residual current channel TRMS current Phase current I01 0.00… 0.01xIn TRMS 1250.0xIn including harmonics up to 31 © Arcteq Relays Ltd...
  • Page 24 Negative sequence current 0.00…1250.0xIn 0.01xIn Per unit measurement from calculated negative sequence current Zero sequence current 0.00…1250.0xIn 0.01xIn Per unit measurement from calculated zero sequence current Table. 5.2.1. - 19. Primary sequence current measurements. Name Range Step Description © Arcteq Relays Ltd...
  • Page 25 Current component measurements Current component measurements indicate the resistive (wattmetric cos[φ]) and reactive (varmetric sin[φ]) current values. These are calculated with the following formula: Wattmetric resistive component = I  * cosφ Varmetric reactive component = I  * sinφ © Arcteq Relays Ltd...
  • Page 26 ILx Reactive Current -300.00… Secondary measurement from each phase current channel reactive 0.01A Sec. 300.00A current component. Pos.Seq Resistive -300.00… Secondary measurement from each phase current channel resistive 0.01A Current Sec. 300.00A current component. © Arcteq Relays Ltd...

  • Page 27: Voltage Measurement And Scaling

    The connection of VTs to the IED measurement inputs and the ratings of the voltage transformers are as in following gure. In gure below line to neutral voltages are connected among with zero sequence voltage. Other connection possibilities are presented in this chapter. © Arcteq Relays Ltd...
  • Page 28 Voltage protection is based on nominal voltage. If 20000V is set to be the nominal voltage this equals 100% setting in voltage based protection functions. 120% trip setting in overvoltage stage equals to 24000V on primary level so 20% increase in this case would be 4000V. © Arcteq Relays Ltd...
  • Page 29 3LN+U0. For further information see different voltage measurement mode examples below: 3LN+U4 3LL+U4 2LL+U3+U4 See below connection wirings for 3LL and 2LL connections. © Arcteq Relays Ltd...
  • Page 30 In the next gure is presented relay behavior when nominal voltage is injected to the relay and the IED is measuring line to neutral voltages. Part of the available information from the IED is presented as well: © Arcteq Relays Ltd...
  • Page 31 Measured voltage amplitude does not match for one measured phase or calculated U0 is measured when Wiring connections from injection device or VT:s to the IED. there should not be any. © Arcteq Relays Ltd...
  • Page 32 100.0V secondary 2LL+U3+U4 mode) U4 Res/SS VT 1…1000000V 0.1V 20000.0V Primary nominal voltage of connected U0 –or SS VT. primary U4 Res/SS VT 0.2…400V 0.1V 100.0V Secondary nominal voltage of connected U0 –or SS VT. secondary © Arcteq Relays Ltd...
  • Page 33 Ux Volt sec 0.01V 500.0xUn voltage. Secondary measurement from each voltage channel TRMS voltage including UxVolt TRMS 0.00… 0.01V 500.0xUn harmonics up to 31 Table. 5.2.2. - 30. Voltage phase angle measurements. Name Range Step Description © Arcteq Relays Ltd...
  • Page 34 System volt UL3 0.00… Primary measured or calculated fundamental frequency RMS line to neutral UL3 0.01V 1000000.00V voltage. System volt U0 0.00… Primary measured or calculated fundamental frequency RMS zero sequence U0 0.01V 1000000.00V voltage. © Arcteq Relays Ltd...

  • Page 35: Power And Energy Calculation

    Energy measurement is calculating magnitude for active and reactive energy. Energy can be flowing to forward (exported) or reverse (imported) direction. If unit has more than one CT measurement module it is possible to choose which side modules current measurement is used by power calculation. © Arcteq Relays Ltd...
  • Page 36 Direction of reactive power is divided in to four quadrants. Reactive power may be inductive or capacitive on both forward and reverse direction. Reactive power quadrant can be indicated simply by using Tan (φ) together with Cos(φ). Tangent phi is calculated according the following formula: © Arcteq Relays Ltd...
  • Page 37 Description 0:Disabled EP meas 3ph 0:Disabled Enable active energy measurement. 1:Enabled 0:Disabled EQ meas 3ph 0:Disabled Enable reactive energy measurement. 1:Enabled 0:Mega E 3ph M or k 0:Mega Measured energy in kilo –or mega values. 1:Kilo © Arcteq Relays Ltd...
  • Page 38 Table. 5.2.3. - 40. DC 1…4 Pulse out settings Name Range Step Default Description DC 1…4 Pulse out OUT1…OUTx None selected Controlled physical outputs selection. Power measurements Following power calculations are available when voltage and current cards are available. © Arcteq Relays Ltd...
  • Page 39 Phase L3 reactive power -1x10 …1x10 kVar L3 Tan(phi) 0.0001 Phase L3 active power direction -1x10 …1x10 L3 Cos(phi) 0.0001 Phase L3 reactive power direction -1x10 …1x10 L3 PF 0.0001 Phase L3 power factor -1x10 …1x10 © Arcteq Relays Ltd...
  • Page 40 Phase L1 total imported reactive inductive energy kVarh/MVarh kVarh/MVarh L1 Exp/Imp 0.01 Sum of imported and exported phase L1 reactive -1x10 …1x10 React.Ind.E.bal.MVarh kVarh/MVarh inductive energy kVarh/MVarh Table. 5.2.3. - 47. Phase L2 energy calculation Name Range Step Description © Arcteq Relays Ltd...
  • Page 41 Example for power calculation is represented here. Both wiring methods line to line –and line to neutral are checked with same signal injection. Voltage scaling is set to 20000:100V and current scaling is set to 1000:5A. Voltages (Line to neutral): Currents: =40.825V, 45.00° =2.500V, 0.00° =61.481V, -159.90° =2.500V, -120.00° © Arcteq Relays Ltd...
  • Page 42 L2 Tan -0.83 L3 Tan 0.11 3PH Tan 0.00 L1 Cos 0.71 L2 Cos 0.77 L3 Cos 0.99 3PH Cos 0.87 Voltages (Line to line): Currents: =100.00V, 30.00° =2.500V, 0.00° =100.00V, -90.00° =2.500V, -120.00° =2.500V, 120.00° © Arcteq Relays Ltd...

  • Page 43: Frequency Tracking And Scaling

    5% in the measured phase currents. From the gure can also be seen that when the frequency is tracked the measurement accuracy is about -0.2% - 0.1% error in the whole frequency range when the sampling is adjusted according to the detected system frequency. © Arcteq Relays Ltd...
  • Page 44 FFT calculation has always whole power cycle in the buffer. Further improvement for the achieved measurement accuracy is the Arcteq patented method of calibrating of the analog channels against 8 system frequency points for both, magnitude and angle. This frequency dependent correction compensates the used measurement hardware frequency dependencies.

  • Page 45: General Menu

    When this parameter is enabled it is possible for the user to force Enable stage protection, control and monitoring functions to different statuses like 0:Disabled 0:Disabled forcing START/TRIP. This is done in the function’s info-page with Status force 1:Enabled to parameter. © Arcteq Relays Ltd...

  • Page 46: Protection Functions

    5.4. Protection functions 5.4.1. General properties of a protection function Following flowchart is describes the basic structure of any protection function. Basic structure is composed of analog measurement value comparison to the pick-up values and operating time characteristics. © Arcteq Relays Ltd...
  • Page 47 Instruction manual Version: 2.00 Protection function is run in a completely digital environment with protection CPU microprocessor which also processes the analog signals transferred to digital form. Figure. 5.4.1. - 21. Principle diagram of  protection relay platform. © Arcteq Relays Ltd...
  • Page 48 The pick-up activation of the function is not directly equal to start-signal generation of the function. Start signal is allowed if blocking condition is not active. Figure. 5.4.1. - 23. Measurement range in relation to the nominal current. © Arcteq Relays Ltd...
  • Page 49 IDMT mode De nite (Min) operating time delay is also in use de ning the minimum time for protection tripping. If this function is not desired this parameter should be set to 0 seconds. © Arcteq Relays Ltd...
  • Page 50 Moderately Inverse, Very Inverse, Extremely Inverse characteristics. Param IEEE MI IEEE selection allows the tuning of the constants A, B and C which allows IEEE VI setting of characteristics following the same formula as the IEEE curves IEEE EI mentioned here. Param © Arcteq Relays Ltd...
  • Page 51 Constant B for IEC/IEEE characteristics. Setting is active and visible when Delay Type is selected to IDMT. 0.0000… 0.0001 0.0200 250.0000 Constant C for IEEE characteristics. Figure. 5.4.1. - 25. Inverse operating time formulas for IEC and IEEE standards. © Arcteq Relays Ltd...
  • Page 52 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.1. - 26. De nite time operating characteristics. © Arcteq Relays Ltd...
  • Page 53 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.1. - 27. IEC prede ned characteristics NI, VI, LTI and EI © Arcteq Relays Ltd...
  • Page 54 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.1. - 28. IEEE ANSI prede ned characteristics EI, LTI, NI and VI © Arcteq Relays Ltd...
  • Page 55 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.1. - 29. IEEE prede ned characteristics EI, MI and VI © Arcteq Relays Ltd...
  • Page 56 IEC or IEEE standards. These functions are Overcurrent stages, Residual overcurrent stages, Directional overcurrent stages and Directional residual overcurrent stages. The setting parameters and their ranges are documented in the function blocks respective chapters. © Arcteq Relays Ltd...
  • Page 57 Time calculation characteristics selection. If activated the operating time during release counter is continuing until set release time even the pick-up element is reset. time Behavior of stages with different release time con gurations are presented in the following gures. © Arcteq Relays Ltd...
  • Page 58 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.1. - 31. No delayed pick-up release. Figure. 5.4.1. - 32. Delayed pick-up release, delay counter is reset at signal drop-off. © Arcteq Relays Ltd...
  • Page 59 Figure. 5.4.1. - 34. Delayed pick-up release, delay counter value is decreasing during the release time. Resetting characteristics can be set according to the application. Default setting is delayed with 60 ms and the time calculation is held during the release time. © Arcteq Relays Ltd...

  • Page 60: Non-Directional Overcurrent I> (50/51)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the NOC function. © Arcteq Relays Ltd...
  • Page 61 Table. 5.4.2. - 57. General settings of the function Name Description Range Step Default 1:Disabled Setting control from Activating this parameter permits changing the pick-up level of the 1:Disabled comm bus protection stage via SCADA. 2:Allowed © Arcteq Relays Ltd...
  • Page 62 User settable variables are binary signals from the system. Blocking signal needs to reach the IED minimum of 5 ms before the set operating delay has passedfor blocking to be active in time.  © Arcteq Relays Ltd...
  • Page 63 Start OFF 1346 NOC2 Trip ON 1347 NOC2 Trip OFF 1348 NOC2 Block ON 1349 NOC2 Block OFF 1350 NOC2 Phase A Start On 1351 NOC2 Phase A Start Off 1352 NOC2 Phase B Start On © Arcteq Relays Ltd...
  • Page 64 1480 NOC4 Phase B Start On 1481 NOC4 Phase B Start Off 1482 NOC4 Phase C Start On 1483 NOC4 Phase C Start Off 1484 NOC4 Phase A Trip On 1485 NOC4 Phase A Trip Off © Arcteq Relays Ltd...

  • Page 65: Non-Directional Earth Fault I0> (50N/51N)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the NEF function. © Arcteq Relays Ltd...
  • Page 66 2:Allowed 1:RMS De nes which available measured magnitude is used by the 2:TRMS Measured magnitude 1:RMS function 3:Peak-to- peak 1:I01 Input selection De nes which measured residual current is used by the function. 2:I02 1:I01 3:I0Calc © Arcteq Relays Ltd...
  • Page 67 Operating time characteristics for trip and reset This function supports de nite time delay (DT) and inverse de nite minimum time (IDMT) delay types. For detailed information on these delay types refer to chapter General properties of a protection function. © Arcteq Relays Ltd...
  • Page 68 Fault Prefault Trip time Used Date & Time code type current current current remaining dd.mm.yyyy 1664-1861 A-G-R… Start average Trip -20 ms Start -200 ms 0ms -1800s 1 - 8 hh:mm:ss.mss Descr. C-G-F current averages averages © Arcteq Relays Ltd...

  • Page 69: Directional Overcurrent Idir> (67)

    1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. Simpli ed function block diagram of DOC function is presented in the gure below. Figure. 5.4.4. - 36. Simpli ed function block diagram of the DOC function. © Arcteq Relays Ltd...
  • Page 70 Table. 5.4.4. - 69. General settings of the function Name Description Range Step Default 1:RMS Measured De nes which available measured magnitude is used by the 2:TRMS 1:RMS magnitude function. 3:Peak-to- peak © Arcteq Relays Ltd...
  • Page 71 Pick-up center -180.0…180.0° 0.1° 0° Angle Pick-up area ±1.0…170.0° 0.1° ±88° The pick-up activation of the function is not directly equal to start-signal generation of the function. Start signal is allowed if blocking condition is not active. © Arcteq Relays Ltd...
  • Page 72 User settable variables are binary signals from the system. Blocking signal needs to reach the IED minimum of 5 ms before the set operating delay has passedfor blocking to be active in time. © Arcteq Relays Ltd...
  • Page 73 Voltage measurable, Blocking Off 4872 DOC2 Measuring live angle On 4873 DOC2 Measuring live angle Off 4874 DOC2 Using voltmem On 4875 DOC2 Using voltmem Off 4928 DOC3 Start ON 4929 DOC3 Start OFF 4930 DOC3 Trip ON © Arcteq Relays Ltd...
  • Page 74 4800-4997 Descr. Fault type L1-G...L1-L2-L3 Trigger current Start average current Fault current Trip -20ms averages Prefault current Start -200ms averages Trip time remaining 0 s ... 1800 s Used SG 1...8 Setting group Operating angle 0...250 deg © Arcteq Relays Ltd...

  • Page 75: Directional Earth Fault I0Dir> (67N)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. Simpli ed function block diagram of the DEF function is presented in the gure below. © Arcteq Relays Ltd...
  • Page 76 Selection of the used AI channel is made with a setting parameter. In all possible input channel variations pre-fault condition is presented with 20 ms averaged history value from -20 ms of Start or Trip event. © Arcteq Relays Ltd...
  • Page 77 I0Cos&I0Sin Broadrange mode ±45.0… Angle Trip area size (Grounded network) 0.1° ±88° 135.0° Angle offset Protection area direction (Grounded network) 0.0…360.0° 0.1° 0.0° Angle blinder Io angle blinder (Petersen coil grounded) -90.0…0.0° 0.1° -90° © Arcteq Relays Ltd...
  • Page 78 There are many bene ts with Petersen coil grounded network. Amount of automatic reclosing is highly decreased and therefore maintenance of breakers is diminished. Arc faults die on their own and cables and equipment suffer less damage. In emergency situations line with earth fault can be used for certain time. © Arcteq Relays Ltd...
  • Page 79 –or over compensated. Directly or small impedance grounded network Figure. 5.4.5. - 41. Angle tracking of DEF function in grounded network model. © Arcteq Relays Ltd...
  • Page 80 Lastly, in a compensated network protection, the relay with traditional algorithms may sporadically detect an earth-fault in a long healthy feeder due to CT errors. For all these reasons, Arcteq has developed an improved alternative to these traditional directional earth fault protections.
  • Page 81 The measured voltage in the chosen voltage channel. Expected operating time Displays the expected operating time in case a fault occurs Time remaining to trip When the relay has picked up and is counting time towards pick-up © Arcteq Relays Ltd...
  • Page 82 Table. 5.4.5. - 80. Event codes of the DEF-function instances. Event Number Event channel Event block name Event Code Description 5184 DEF1 Start ON 5185 DEF1 Start OFF 5186 DEF1 Trip ON 5187 DEF1 Trip OFF 5188 DEF1 Block ON 5189 DEF1 Block OFF © Arcteq Relays Ltd...
  • Page 83 DEF function register content. This information is available in 12 last recorded events for all provided instances separately. Table. 5.4.5. - 81. Register content Column name Content description Event Code dd.mm.yyyy hh:mm:ss.mss © Arcteq Relays Ltd...

  • Page 84: Intermittent Earth Fault I0Int> (67Nt)

    When disturbance recorders were introduced as common feature of the protection relay this phenomena got name and characteristics. Its unique characteristics require completely different tools for handling than the traditional directional earth fault protection is capable of handling. © Arcteq Relays Ltd...
  • Page 85 Following gures present few intermittent earth fault situations seen by the relays in substation. Figure. 5.4.6. - 44. Close to resonance tuned medium size network intermittent earth fault seen by faulty feeder relay. © Arcteq Relays Ltd...
  • Page 86 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.6. - 45. Close to resonance tuned network intermittent earth fault seen by healthy feeder relay. © Arcteq Relays Ltd...
  • Page 87 AQ-F255 Instruction manual Version: 2.00 Figure. 5.4.6. - 46. Undercompensated medium size network intermittent earth fault seen by faulty feeder relay. © Arcteq Relays Ltd...
  • Page 88 On the other hand, since an intermittent earth fault causes signi cant network stress the protection trip should be performed as fast as possible. © Arcteq Relays Ltd...
  • Page 89 By following basic rules presented in this chapter the correct setting range should be easier to de ne. It is also important to check that the reset time settings are never set longer than the desired operating time delay setting. © Arcteq Relays Ltd...
  • Page 90 If the blocking signal is not activated when the pick-up element activates, a START signal is generated and the function proceeds to the time characteristics calculation. © Arcteq Relays Ltd...
  • Page 91 Table. 5.4.6. - 86. Event codes of the IEF function. Event Number Event channel Event block name Event Code Description 7296 IEF1 Start FWD ON 7297 IEF1 Start FWD OFF 7298 IEF1 Start REV ON 7299 IEF1 Start REV OFF © Arcteq Relays Ltd...

  • Page 92: Current Unbalance I2> (46)

    IDMT mode. For IDMT operation IEC and ANSI standard time delays are supported as well as custom parameters. The operational logic consists of input magnitude processing, input magnitude selection, threshold comparator, block signal check, time delay characteristics and output processing. © Arcteq Relays Ltd...
  • Page 93 Selection of the used AI channel is made with a setting parameter. In all possible input channel variations pre-fault condition is presented with 20 ms averaged history value from -20 ms of Start or Trip event. © Arcteq Relays Ltd...
  • Page 94 User settable variables are binary signals from the system. Blocking signal needs to reach the IED minimum of 5 ms before the set operating delay has passedfor blocking to be active in time. © Arcteq Relays Ltd...
  • Page 95 Table. 5.4.7. - 90. Operating time characteristics setting parameters. Name Range Step Default Description Selection of the delay type time counter. Selection possibilities are Delay Type dependent (IDMT, Inverse De nite Minimum Time) and IDMT independent (DT, De nite Time) characteristics. © Arcteq Relays Ltd...
  • Page 96 Continue time calculation Time calculation characteristics selection. If activated the operating time during release counter is continuing until set release time even the pick-up element is reset. time © Arcteq Relays Ltd...
  • Page 97 In the register of the CUB function recorded events are start, trip or blocked “On” event process data. Table below presents the structure of CUB function register content. This information is available in 12 last recorded events for all provided instances separately. © Arcteq Relays Ltd...

  • Page 98: Harmonic Overcurrent Ih> (50H/51H/68H)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the HOC function. © Arcteq Relays Ltd...
  • Page 99 Selection of the used AI channel and monitored harmonic as well as per unit monitoring or percentage of fundamental monitoring is made with a setting parameter. In all possible input channel variations pre-fault condition is presented with 20 ms averaged history value from -20 ms of Start or Trip event. © Arcteq Relays Ltd...
  • Page 100 Pick-up setting Ih/IL 5.00…200.00 % 0.01 % 20.00 % (percentage monitoring) The pick-up activation of the function is not directly equal to start-signal generation of the function. Start signal is allowed if blocking condition is not active. © Arcteq Relays Ltd...
  • Page 101 2372 HOC1 Block ON 2373 HOC1 Block OFF 2432 HOC2 Start ON 2433 HOC2 Start OFF 2434 HOC2 Trip ON 2435 HOC2 Trip OFF 2436 HOC2 Block ON 2437 HOC2 Block OFF 2496 HOC3 Start ON © Arcteq Relays Ltd...

  • Page 102: Circuit Breaker Failure Protection Cbfp (50Bf)

    ON/OFF events to the common event buffer from each of the two output signal. Time stamp resolution is 1ms. Function provides also cumulative counters for RETRIP, CBFP, CBFP START and BLOCKED events. © Arcteq Relays Ltd...
  • Page 103 Reset ratio of 97 % is inbuilt in the function and is always related to the settingvalue. The setting value is common for all measured phases and single-, dual- or all phases Im exceed of the Iset value will cause pick-up operation of the function. © Arcteq Relays Ltd...
  • Page 104 User settable variables are binary signals from the system. Blocking signal needs to reach the IED minimum of 5 ms before the set operating delay has passedfor blocking to be active in time. © Arcteq Relays Ltd...
  • Page 105 CBFP start timer, this setting de nes how long the starting condition has to last CBFP 0.005s 0.200s 1800.000s before CBFP signal is activated. A few typical cased of CBFP are presented in the following gures. © Arcteq Relays Ltd...
  • Page 106 Retrip is wired in parallel from its own output contact in the IED to the second tripping coil of the circuit breaker. CBFP signal to upstream is wired normally from its output contact in the IED to the upstream / incomer breaker. In following are few operational cases presented regarding to the different applications. © Arcteq Relays Ltd...
  • Page 107 CBFP will be issued to upstream breaker. If the primary protection function clears the fault e.g. the circuit breaker operates normally the counters for retrip and CBFP are reset immediately the current is measured below the threshold settings. © Arcteq Relays Ltd...
  • Page 108 This con guration allows the CBFP to be controlled on current based functions only and other function trips can be excluded from the CBFP functionality. © Arcteq Relays Ltd...
  • Page 109 This con guration allows the CBFP to be controlled on current based functions with added security from the current monitoring of the CBFP function and other function trips can be also included to the CBFP functionality. © Arcteq Relays Ltd...
  • Page 110 Probably the most common application is the case where the circuit breaker trip coil is controlled with the IED trip output and CBFP is controlled with one dedicated CBFP contact. In following are few operational cases presented regarding to the different applications and settings of the CBFP function. © Arcteq Relays Ltd...
  • Page 111 CBFP will be issued to upstream breaker. If the primary protection function clears the fault e.g. the circuit breaker operates normally the counter for CBFP are reset immediately the current is measured below the threshold settings. © Arcteq Relays Ltd...
  • Page 112 This con guration allows the CBFP to be controlled on current based functions only and other function trips can be excluded from the CBFP functionality. © Arcteq Relays Ltd...
  • Page 113 This con guration allows the CBFP to be controlled on current based functions with added security from the current monitoring of the CBFP function and other function trips can be also included to the CBFP functionality. © Arcteq Relays Ltd...
  • Page 114 CBFP for the upstream breaker tripping. In this example no retripping is utilized and CBFP signal is used for the incomer trip from the outgoing breaker trip signal. The trip signal can be transported in between of the IED:s also by using GOOSE messages if so wanted. © Arcteq Relays Ltd...
  • Page 115 Table. 5.4.9. - 103. Event codes of the CBFP function instance Event Number Event channel Event block name Event Code Description 2816 CBF1 Start ON 2817 CBF1 Start OFF 2818 CBF1 Retrip ON 2819 CBF1 Retrip OFF 2820 CBF1 CBFP ON © Arcteq Relays Ltd...

  • Page 116: Restricted Earth Fault / Cable End Differential (Ref) I0D> (87N)

    ON/OFF events to the common event buffer from each of the two output signals. Time stamp resolution is 1ms. Function provides cumulative counters for REF Trip and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the REF function. © Arcteq Relays Ltd...
  • Page 117 The following general settings de ne the general behavior of the function. These settings are static i.e. it is not possible change them with setting group switching. Table. 5.4.10. - 106. General settings of the REF stage (not SG selectable) Name Range Step Default Description © Arcteq Relays Ltd...
  • Page 118 The pick-up activation of the function is not directly equal to trip-signal generation of the function. Trip signal is allowed if blocking condition is not active. In the following gure is presented the differential characteristics with default settings. Figure. 5.4.10. - 63. Differential characteristics for REF function with default settings. © Arcteq Relays Ltd...
  • Page 119 User settable variables are binary signals from the system. Blocking signal needs to reach the IED minimum of 5 ms before the set operating delay has passedfor blocking to be active in time. typical applications for this function are presented in the following gures. © Arcteq Relays Ltd...
  • Page 120 In case of outside earth fault the circulating residual current in the faulty phase winding is not causing tripping because the comparison of measured starpoint current and calculated residual current differential is close to zero. © Arcteq Relays Ltd...
  • Page 121 To main event buffer it is possible to select status “On” or “Off” messages. 12 last registers are available in the function where the triggering event of the function (Trip activated or blocked) is recorded with time stamp and process data values. © Arcteq Relays Ltd...

  • Page 122: Overvoltage U> (59)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the OV function. © Arcteq Relays Ltd...
  • Page 123 Selection of the used AI channel is made with a setting parameter. In all possible input channel variations pre-fault condition is presented with 20 ms averaged history value from -20 ms of Start or Trip event. © Arcteq Relays Ltd...
  • Page 124 Instruction manual Version: 2.00 Figure. 5.4.11. - 69. Selectable measurement magnitudes with 3LN+U4 VT connection. Figure. 5.4.11. - 70. Selectable measurement magnitudes with 3LL+U4 VT connection. If no residual voltage is connected  phase-to-earth voltages are not available. © Arcteq Relays Ltd...
  • Page 125 Primary voltage required for tripping. The displayed pick-up voltage level depends on the pick- U< Pick-up setting V up setting and the voltage transformer settings. Expected Displays the expected operating time in case a fault occurs operating time © Arcteq Relays Ltd...
  • Page 126 Table. 5.4.11. - 113. Operating time characteristics setting parameters. Name Range Step Default Description Selection of the delay type time counter. Selection possibilities are dependent Delay Type (IDMT, Inverse De nite Minimum Time) and independent (DT, De nite Time) IDMT characteristics. © Arcteq Relays Ltd...
  • Page 127 Table. 5.4.11. - 115. Event codes of the OV function instance 1 – 4. Event Number Event channel Event block name Event Code Description 5440 Start ON 5441 Start OFF 5442 Trip ON 5443 Trip OFF 5444 Block ON 5445 Block OFF 5504 Start ON © Arcteq Relays Ltd...

  • Page 128: Undervoltage U< (27)

    The function can operate on instant or time delayed mode. In time delayed mode the operation can be selected for de nite time or IDMT. The operational logic consists of input magnitude processing, input magnitude selection, threshold comparator, two block signal check, time delay characteristics and output processing. © Arcteq Relays Ltd...
  • Page 129 0: P-P Voltages 1: P-E Measured Selection of P-P or P-E voltages. Additionally U3 or U4 input can be 0: P-P Voltages magnitude assigned as the voltage channel to be supervised. Voltages 2: U3Input (2LL-U3SS) 3: U4InputSS © Arcteq Relays Ltd...
  • Page 130 20 ms averaged history value from -20 ms of Start or Trip event. Figure. 5.4.12. - 73. Selectable measurement magnitudes with 3LN+U4 VT connection. Figure. 5.4.12. - 74. Selectable measurement magnitudes with 3LL+U4 VT connection. If no residual voltage is connected,  phase-to-earth voltages are not available. © Arcteq Relays Ltd...
  • Page 131 If the measured voltage has dropped below the Block setting the blocking will persist until all of the line voltages have risen over the U< pick-up setting. Please see the image for a visualization of this function. © Arcteq Relays Ltd...
  • Page 132 Blocking signal can be tested also in the commissioning phase of the stage by software switch signal when relay common and global testing mode is activated. © Arcteq Relays Ltd...
  • Page 133 Resetting characteristics selection either time delayed or instant after pick- Delayed Pick- up element is released. If activated the start signal is reset after set release up release time delay. © Arcteq Relays Ltd...
  • Page 134 Trip ON 5763 Trip OFF 5764 Block ON 5765 Block OFF 5766 Undervoltage Block On 5767 Undervoltage Block Off 5824 Start ON 5825 Start OFF 5826 Trip ON 5827 Trip OFF 5828 Block ON 5829 Block OFF © Arcteq Relays Ltd...

  • Page 135: Neutral Voltage U0> (59N)

    100/√3 V = 57.74 V. Below is presented the formula for symmetric component calculation and therefore to zero sequence voltage calculation. See zero sequence calculation examples below. Figure. 5.4.13. - 77. Normal situation © Arcteq Relays Ltd...
  • Page 136 START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the NOV function. © Arcteq Relays Ltd...
  • Page 137 Ratio between measured/calculated neutral voltage and the pick-up value. moment General settings The following general settings de ne the general behavior of the function. These settings are static i.e. it is not possible change them with setting group switching. © Arcteq Relays Ltd...
  • Page 138 Uset value and thus pick-up element is active (independent time characteristics). Inverse de nite minimum time (IDMT) will give the trip signal in time which is in relation of the set pick-up voltage Uset and measured voltage Um (dependent time characteristics). IDMT function delay follows this formula: © Arcteq Relays Ltd...
  • Page 139 The NOV function generates events and registers from the status changes of start, trip and blocked. To main event buffer is possible to select status “On” or “Off” messages. The NOV function offers four independent instances which events are segregated for each instance operation. © Arcteq Relays Ltd...
  • Page 140 Trigger Fault Prefault Trip time Used Date & Time code type voltage voltage voltage remaining dd.mm.yyyy 5952-6149 L1-G…L1- Start average Trip -20ms Start -200 ms 0ms -1800s 1 - 8 hh:mm:ss.mss Descr. L2-L3 voltage averages averages © Arcteq Relays Ltd...

  • Page 141: Sequence Voltage U1/U2>/<(59P/27P/47)

    Below is presented the formula for symmetric component calculation and therefore to VUB positive sequence calculation.  See positive sequence calculation examples below. Figure. 5.4.14. - 81. Positive sequence component vector examples. Earth fault in isolated network. © Arcteq Relays Ltd...
  • Page 142 Close distance short circuit between phases 1 and 3. Negative sequence calculation Below is presented the formula for symmetric component calculation and therefore to NSV calculation. See negative sequence calculation examples below. Figure. 5.4.14. - 82. Negative sequence component vector examples. © Arcteq Relays Ltd...
  • Page 143 Figure. 5.4.14. - 83. Simpli ed function block diagram of the sequence voltage function. Measured input values The function block uses analog voltage measurement values. Function block always utilizes fundamental frequency RMS values. -20 ms averaged value of the selected magnitude is used for the pre-fault data registering. © Arcteq Relays Ltd...
  • Page 144 Under block setting Ublk the blocking will persist until all of the line voltages have risen over the U< pick-up setting. Please see the image for a visualization of this function. If block level is set to zero, blocking is not in use. © Arcteq Relays Ltd...
  • Page 145 From blocking of the function a HMI display event as well as time stamped blocking event with information of the startup voltage values and fault type is issued. © Arcteq Relays Ltd...
  • Page 146 8450 VUB3 Trip ON 8451 VUB3 Trip OFF 8452 VUB3 Block ON 8453 VUB3 Block OFF 8512 VUB4 Start ON 8513 VUB4 Start OFF 8514 VUB4 Trip ON 8515 VUB4 Trip OFF 8516 VUB4 Block ON © Arcteq Relays Ltd...

  • Page 147: Over- And Underfrequency F>/< (81O/81U)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the FRQV function. © Arcteq Relays Ltd...
  • Page 148  Reset ratio of 97 % is inbuilt in the function and is always related to the pick-up value. Table. 5.4.15. - 138. Pick-up characteristics setting Name Description Range Step Default fset> fset>> Pick-up setting 10.00…80.00Hz 0.01Hz 51Hz fset>>> fset>>>> © Arcteq Relays Ltd...
  • Page 149 Trip ON 6339 FRQV1 f>  Trip OFF 6340 FRQV1 f>>  Start ON 6341 FRQV1 f>>  Start OFF 6342 FRQV1 f>>  Trip ON 6343 FRQV1 f>>  Trip OFF 6344 FRQV1 f>>>  Start ON 6345 FRQV1 f>>>  Start OFF © Arcteq Relays Ltd...
  • Page 150 FRQV1 f<<<  Block OFF 6382 FRQV1 f<<<<  Block ON 6383 FRQV1 f<<<<  Block OFF  In the table below is presented the structure of FSP function register content. This information is available in 12 last recorded events. © Arcteq Relays Ltd...

  • Page 151: Rate-Of-Change Of Frequency Protection Df/Dt (81R)

    Frequency protection utilizes total of eight separate setting groups which can be selected from one common source. The function can operate on instant or time delayed mode. © Arcteq Relays Ltd...
  • Page 152 The f>/< limit value is used to block the operation of the function near the nominal frequency. Table. 5.4.16. - 142. Pick-up characteristics setting Name Description Range Step Default df/dt>/<(1…8)pick-up Pick-up setting 0.01…10.00Hz/s 0.01Hz/s 0.2 Hz/s © Arcteq Relays Ltd...
  • Page 153 </> (2)  Start ON 6597 DFT1 df/dt </> (2)  Start OFF 6598 DFT1 df/dt </> (2)  Trip ON 6599 DFT1 df/dt </> (2)  Trip OFF 6600 DFT1 df/dt </> (3)  Start ON 6601 DFT1 df/dt </> (3)  Start OFF © Arcteq Relays Ltd...
  • Page 154 6638 DFT1 df/dt </> (8)  Block ON 6639 DFT1 df/dt </> (8)  Block OFF In the table below is presented the structure of FSP function register content. This information is available in 12 last recorded events. © Arcteq Relays Ltd...

  • Page 155: Over Power P> (32O)

    Three phase active power value is used for the function block. For pre-fault data registering -20ms averaged value is used. If the protection relay has more than one CT module parameter Measured side determines which current measurement is used for the power measurement. © Arcteq Relays Ltd...
  • Page 156 In the function is available 12 last registers where the triggering event of the function (start, trip or blocked) is recorded with time stamp and process data values. © Arcteq Relays Ltd...

  • Page 157: Under Power P< (32U)

    START and TRIP events simultaneously with equivalent time stamp. Time stamp resolution is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the UPW function. © Arcteq Relays Ltd...
  • Page 158 Pset< and measured magnitude (Pm).  Reset ratio of 97 % is inbuilt in the function and is always related to the Pset< value. Figure. 5.4.18. - 90. Activation and deactivation characteristics of the Under Power functions Low Power Blocking. © Arcteq Relays Ltd...
  • Page 159 Table. 5.4.18. - 151. Event codes of the UPW function. Event Number Event channel Event block name Event Code Description 6464 UPW1 Start ON 6465 UPW1 Start OFF 6466 UPW1 Trip ON 6467 UPW1 Trip OFF © Arcteq Relays Ltd...

  • Page 160: Reverse Power Pr (32R)

    1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the RPW function. Figure. 5.4.19. - 91. Simpli ed function block diagram of the RPW function. © Arcteq Relays Ltd...
  • Page 161 5 ms before the set operating delay has passedfor blocking to be active in time. Operating time characteristics for trip and reset This function supports de nite time delay (DT). For detailed information on this delay type refer to chapter General properties of a protection function. © Arcteq Relays Ltd...

  • Page 162: Vector Jump Protection (78)

    Vector jump function (VJP) is used for instant tripping and has only one operating instance VJP1. Vector jump function has algorithm which follows the samples of chosen measured voltages (64samples/cycle). Used reference voltage can be all or any phase- to phase or phase- to neutral voltage. © Arcteq Relays Ltd...
  • Page 163 Table. 5.4.20. - 157. Analogic magnitudes used by the VJP function. Signal Description Time base Measured Line-to-Line voltage U 5 ms Measured Line-to-Line voltage U 5 ms Measured Line-to-Line voltage U 5 ms Measured Line-to-Neutral voltage U 5 ms © Arcteq Relays Ltd...
  • Page 164 Δαset and measured magnitude (Δαm) per all selected voltages.  VJP stage trip signal lasts for 20 milliseconds and resets automatically after the time has passed.  The setting value is common for all measured amplitudes those are used. © Arcteq Relays Ltd...
  • Page 165 In the function, there are 12 last registers available. The triggering event of the function (alarm, trip or blocked) is recorded with time stamp and process data values. Table. 5.4.20. - 159. Event codes of the VJP Event Number Event channel Event block name Event Code Description 9920 VJP1 Block On © Arcteq Relays Ltd...

  • Page 166: Line Thermal Overload Protection Tf> (49F)

    = Temperature correction factor either from linear approximation or settable 10 point thermal capacity curve. τ = Thermal time constant of the protected object (in minutes) e = Euler’s number t = Calculation time step in seconds (0.005s) © Arcteq Relays Ltd...
  • Page 167 RTD sensor for the measurement. When the ambient temperature of the protected object is stable it can be set manually (e.g. in case of ground dug cables). © Arcteq Relays Ltd...
  • Page 168 = Ambient temperature correction factor for the minimum temperature = Ambient temperature reference (can be set in  ̊ C or  ̊ F , the temperature in which the given manufacturer presumptions apply and the temperature correction factor is 1.0) © Arcteq Relays Ltd...
  • Page 169 10 pairs of temperature – correction factor pairs. Figure. 5.4.21. - 97. Example of the ground temperature and correction coef cient. In the manufacturer given data the temperature coef cient may be informed as in gure above. © Arcteq Relays Ltd...
  • Page 170 This information is usually provided by the cable manufacturer. For cable the initial data may be as follows (example data from Prysmian cables datasheet). © Arcteq Relays Ltd...
  • Page 171 In addition to the ampere-temperature values equally important information is the continuous current capacity presumptions (e.g. in which conditions the given values apply). In following gure the presumptions are given for example to Prysmian cables. © Arcteq Relays Ltd...
  • Page 172 If the installation conditions vary from the presumption conditions, manufacturers may give additional information of how the current carrying capacity should be corrected in order to match changed conditions. Figure. 5.4.21. - 101. Correction coef cients for the current carrying capacity given by the manufacturer (Prysmian). © Arcteq Relays Ltd...
  • Page 173 As an example of the k (service factor, current carrying capacity) factor importance let’s calculate cable installation with correct k factor and without setting it to correct value. Initial data for the set-up of the thermal image: © Arcteq Relays Ltd...
  • Page 174 In = 680 A, Tmax = 90  ̊ C , Tamb = 15  ̊ C , Tref = 15  ̊ C and k = 1.0 Figure. 5.4.21. - 102. Thermal image response with nominal load when the installation is according to the presumptions. © Arcteq Relays Ltd...
  • Page 175 71.4 kA and its insulation is XLPE. The cables screen circuit is open and the laying of the cable is flat. Its current carrying capacity is 575A in 65  ̊ C and 680A in 90  ̊ C . Reference temperature for ground installation is 15  ̊ C . Cable thermal time constant is 183.8 min. © Arcteq Relays Ltd...
  • Page 176 If in this case the k factor would not been set the thermal image would show about 68  ̊ C temperature when it in reality would be 96  ̊ C . © Arcteq Relays Ltd...
  • Page 177 550A current instead of the initial data given current of 680A. Estimating trip time Calculated effective nominal current: × tamb × I , where fact fact is the service factor fact tamb is the ambient temperature factor fact © Arcteq Relays Ltd...
  • Page 178 ON/OFF events to the common event buffer from each of the two output signal. Time stamp resolution is 1ms. Function provides also cumulative counters for TOLF Trip, Alarm 1, Alarm 2, Inhibit and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the TOLF function. © Arcteq Relays Ltd...
  • Page 179 Time constant setting. This time constant is used for 0.1… tau (t const) 0.1min 10.0min heating and cooling of the protected object. Setting is 500.0min visible if Set or estimate tau setting is selected to “Set”. © Arcteq Relays Ltd...
  • Page 180 “Linear est.” 0.01… Temperature correction factor for minimum ambient temperature k at min amb temp 0.01xIn 1.00xIn 5.00xIn setting. Setting is visible if  Ambient lin. or curve is set to “Linear est.” © Arcteq Relays Ltd...
  • Page 181 If the blocking signal is not activated when the pick-up element activates, a Trip signal is generated and the function proceeds to the time characteristics calculation. © Arcteq Relays Ltd...
  • Page 182 -  TF> Alarm 2 time to rel.: Time to theta to reach under Alarm 2 limit when cooling -  TF> Inhibit time to rel.: Time to theta to reach under Inhibit limit when cooling Table. 5.4.21. - 169. Counters Name Description / values © Arcteq Relays Ltd...

  • Page 183: Voltage Memory Function

    The determination is made by comparing the angle between the operating quantity (zone/trip area) to actual measured quantity. The function will produce an output in case required terms are met. © Arcteq Relays Ltd...
  • Page 184 5 ms IL3RMS Fundamental RMS measurement of phase L3/C current 5 ms Fundamental RMS measurement of voltage U 5 ms Fundamental RMS measurement of voltage U 5 ms Fundamental RMS measurement of voltage U 5 ms © Arcteq Relays Ltd...
  • Page 185 50/60Hz, there could be an error in current magnitude and angle measurement. To minimize errors, it is preferable that while voltages are gone, it is better to measure frequency, and to also perform protection-based sampling from the current. © Arcteq Relays Ltd...

  • Page 186: Arc Fault Protection Iarc>/I0Arc>(50Arc/50Narc)

    This delay can be avoided by using arc protection. To extent the speed of arc protection operation arc protection card has high speed output as well to give tripping signal faster. © Arcteq Relays Ltd...
  • Page 187 Arc protection card has four sensor channels. Up to three arc point sensors may be connected to each channel. Sensor channels support Arcteq AQ-01 (light sensing) and AQ-02 (pressure and light sensing) units. Optionally protection function can be applied with phase or residual current condition.
  • Page 188 Example scheme setting The following examples enables better understanding of setting up the arc protection function. In the following cases AQ-101 models are used to extend the protection of Zone2 and to protect each outgoing feeder (Zone3). © Arcteq Relays Ltd...
  • Page 189 AQ-100 series units to AQ-200 series arc protection card to prevent the pulses from activating ArcB1. Next example is the same as in the rst one but this time each outgoing feeder has AQ-2xx protection relay instead of AQ-101 arc protection relay. © Arcteq Relays Ltd...
  • Page 190 Arc protection uses sample based current measurement. If required number of samples is found over the setting limit current condition activates. It is possible to use either phase currents or residual current in the tripping decision. © Arcteq Relays Ltd...
  • Page 191 5 ms before the set operating delay has passedfor blocking to be active in time. Events & registers The ARC function generates events and registers from the status changes of start, trip and blocked. To main event buffer it’s possible to select status “On” or “Off” messages. © Arcteq Relays Ltd...
  • Page 192 4766 ARC1 Channel 2 Pressure On 4767 ARC1 Channel 2 Pressure Off 4768 ARC1 Channel 3 Light On 4769 ARC1 Channel 3 Light Off 4770 ARC1 Channel 3 Pressure On 4771 ARC1 Channel 3 Pressure Off © Arcteq Relays Ltd...

  • Page 193: Programmable Stage Pgx >/< (99)

    “Activated”, the amount of programmable stages can be set anywhere between 1 to 10 depending on the need of the application. In the example below the amount of programmable stages have been set to 2, which results in PS1 and PS2 appearing. The inactive stages are hidden until they are activated. © Arcteq Relays Ltd...
  • Page 194 0.00866 multiplier inverses to 100%. This way pre-processed signal is easier to set, but it is also possible to just use scaling factor of 1.0 and set the desired pick-up limit as primary voltage. In the same way any chosen measurement value can be scaled to desired form. © Arcteq Relays Ltd...
  • Page 195 Any of the signals need to ful ll the pick-up condition. Each signal has their own pick-up setting. Mag3 4:Mag1 AND Mag2 AND All of the signals need to ful ll the pick-up condition. Each signal has their own pick-up setting. Mag3 © Arcteq Relays Ltd...
  • Page 196 4:Delta Relative change over time. If the measured signal changes more than the set relative pick-up value in 20ms, set(%) +/- > the comparison condition is ful lled. The condition is dependent on direction. © Arcteq Relays Ltd...
  • Page 197 IL2 13th harmonic in per unit value IL2 15th h. IL2 15th harmonic in per unit value IL2 17th h. IL2 17th harmonic in per unit value IL2 19th h. IL2 19th harmonic in per unit value Description © Arcteq Relays Ltd...
  • Page 198 I02 17th harmonic in per unit value I02 19th h. I02 19th harmonic in per unit value TRMS Description IL1 TRMS IL1 True RMS in per unit value IL2 TRMS IL2 True RMS in per unit value © Arcteq Relays Ltd...
  • Page 199 UL2 Primary voltage V UL3Mag UL3 Primary voltage V U0Mag U0 Primary voltage V Angles Description UL12Ang UL12 angle UL23Ang UL23 angle UL31Ang UL31 angle UL1Ang UL1 angle UL2Ang UL2 angle UL3Ang UL3 angle U0Ang U0 angle Calculated Description © Arcteq Relays Ltd...
  • Page 200 XL31Pri Reactance X L31 primary ohm RL12Sec Resistance R L12 secondary ohm XL12Sec Reactance X L12 secondary ohm RL23Sec Resistance R L23 secondary ohm XL23Sec Reactance X L23 secondary ohm RL31Sec Resistance R L31 secondary ohm © Arcteq Relays Ltd...
  • Page 201 Positive Reactance X secondary ohm ZSeqPri Positive Impedance Z primary ohm ZSeqSec Positive Impedance Z secondary ohm ZSeqAngle Positive Impedance Z angle GL1Pri Conductance G L1 primary mS BL1Pri Susceptance B L1 primary mS GL2Pri Conductance G L2 primary mS © Arcteq Relays Ltd...
  • Page 202 Outputs of the function are Start Trip and Blocked signals. Setting parameters are static inputs for the function which are changed only by user input in the setup phase of the function. Programmable stage utilize total of eight separate setting groups which can be selected from one common source. © Arcteq Relays Ltd...
  • Page 203 User settable variables are binary signals from the system. Blocking signal needs to reach the IED minimum of 5 ms before the set operating delay has passedfor blocking to be active in time. © Arcteq Relays Ltd...
  • Page 204 8601 PGS1 PS5 >/< Start OFF 8602 PGS1 PS5 >/< Trip ON 8603 PGS1 PS5 >/< Trip OFF 8604 PGS1 PS5 >/< Block ON 8605 PGS1 PS5 >/< Block OFF 8606 PGS1 reserved 8607 PGS1 reserved © Arcteq Relays Ltd...
  • Page 205 12 last recorded events for all provided instances separately. Table. 5.4.24. - 180. Register content. Trip time Used Date & Time Event code >/< Mag# Mag#/Set# remaining dd.mm.yyyy 8576-8637 Magnitude # Measured magnitude/Pick-up 0ms -1800s 1 - 8 hh:mm:ss.mss Descr. value setting © Arcteq Relays Ltd...

  • Page 206: Control Functions

    2 is selected with signal and when it is released the setting group 1 shall not be automatically selected and the logic needs separate control to set the active setting group back to group 1. © Arcteq Relays Ltd...
  • Page 207 5:SG5 is speci cally controlled to “On” after force SG is disabled if there is no other 6:SG6 controls the last set SG shall remain active. 7:SG7 8:SG8 © Arcteq Relays Ltd...
  • Page 208 4161 SG2 Disabled 4162 SG3 Enabled 4163 SG3 Disabled 4164 SG4 Enabled 4165 SG4 Disabled 4166 SG5 Enabled 4167 SG5 Disabled 4168 SG6 Enabled 4169 SG6 Disabled 4170 SG7 Enabled 4171 SG7 Disabled 4172 SG8 Enabled © Arcteq Relays Ltd...
  • Page 209 4205 SG2 Active Off 4206 SG3 Active On 4207 SG3 Active Off 4208 SG4 Active On 4209 SG4 Active Off 4210 SG5 Active On 4211 SG5 Active Off 4212 SG6 Active On 4213 SG6 Active Off © Arcteq Relays Ltd...
  • Page 210 In addition to the direct connection below also additional logic can be added to the control similarly to the 1 wire control. By that way single wire loss will not effect to the correct setting group selection. © Arcteq Relays Ltd...
  • Page 211 In this example the CLPU function output is used for the automatic setting group change. Similarly to this application, any combination of the available signals in the relay database can be programmed to be used for in the setting group selection logic. © Arcteq Relays Ltd...

  • Page 212: Object Control And Monitoring (Obj)

    Time stamp resolution is 1ms. Function provides also cumulative counters for Open and Close act and Open / Close Failed events. In the following gure is presented the simpli ed function block diagram of the OBJ function. © Arcteq Relays Ltd...
  • Page 213 Link to the physical or software binary input.“1” means that the opening of the object is blocked. Open Block Position indication can be done among binary inputs and protection stage signals by using IEC- Input 61850, GOOSE or logical signals. (SWx) © Arcteq Relays Ltd...
  • Page 214 CB is selected, settings for WD cart, position indication of the CB, object ready, use synchrocheck and control timings are available. The functionality of the selected object is presented in the table below. Table. 5.5.2. - 187. Object type selection Object type Functionality Description © Arcteq Relays Ltd...
  • Page 215 500.00s be used in the matrix or the logic editor. The pick-up activation of the function is not directly equal to start-signal generation of the function. Start signal is allowed if blocking condition is not active. © Arcteq Relays Ltd...
  • Page 216 Table. 5.5.2. - 189. Event codes of the OBJ function instances 1 – 10. Event block name Description OBJ 1...10 Object Intermediate OBJ 1...10 Object Open OBJ 1...10 Object Close OBJ 1...10 Object Bad OBJ 1...10 WD Intermediate © Arcteq Relays Ltd...

  • Page 217: Indicator Object Monitoring (Cin)

    IEC-61850, GOOSE or logical signals. (SWx) Status change of the signals will always cause recorded event also in the indicators continuous status indications. Events can be enabled or disabled according to the application requirements. © Arcteq Relays Ltd...
  • Page 218 10753 CIN6 Open 10754 CIN6 Close 10755 CIN6 10816 CIN7 Intermediate 10817 CIN7 Open 10818 CIN7 Close 10819 CIN7 10880 CIN8 Intermediate 10881 CIN8 Open 10882 CIN8 Close 10883 CIN8 10944 CIN9 Intermediate 10945 CIN9 Open © Arcteq Relays Ltd...

  • Page 219: Auto-Reclosing 0 → 1 (79)

    Whether single or multi-shot autoreclosing should be used is matter of the type of protection, switchgear, circuit breaker, stability requirements, network type, consumer loads and also local utility knowledge and practices of the network. © Arcteq Relays Ltd...
  • Page 220 In this type of application is normally used two shot (one high speed and one delayed) autoreclosing which are started by earth fault protection or overcurrent protection. Short circuit protection is used for interlocking of the autorecloser in case of clear short circuit fault in the line. © Arcteq Relays Ltd...
  • Page 221 In the failure acknowledgements situations autorecloser is always put to lock-out state with requirement for reset when the cause of the lock-out is cleared. Reset is done by external input to the function or by closing the breaker. © Arcteq Relays Ltd...
  • Page 222 Recloser starts to calculate the Shot1 Dead Time for closing the breaker. 4. Dead Time for Shot1 is exceeded and autorecloser sends close request for the Object breaker, the close conditions are met and the breaker close command is sent to breaker close coil. © Arcteq Relays Ltd...
  • Page 223 In this example fault persist for the high speed autoreclosing but is cleared by time delayed autoreclosing. Figure. 5.5.4. - 128. Settings for earth fault reclosing with two shots. This type of sequence represents 10-15% of all the faults in the medium voltage overhead line network. © Arcteq Relays Ltd...
  • Page 224 Autoreclosing reclaim time is running recloser will go directly to nal trip state and lock-out state. This behavior can be controlled with settings. Both of these reclaim times can be set to 0 when they are not needed. Autoreclosing will skip all timers set to 0. © Arcteq Relays Ltd...
  • Page 225 Recloser starts to calculate the Shot1 Dead Time for closing the breaker. 4. Dead Time for Shot1 is exceeded and autorecloser sends close request for the Object breaker, the close conditions are met and the breaker close command is sent to breaker close coil. © Arcteq Relays Ltd...
  • Page 226 / arcing times needs to be set accordingly. The main operating time settings of the protection should be longer than the values set to the autorecloser in order the state changes work properly for recloser. © Arcteq Relays Ltd...
  • Page 227 Running signals. Autorecloser enters to Lock-out state preventing further requests for reclosing. Circuit breaker is opened and I> Start signal is released. Simultaneously REQ1 signal is released and recloser is now in steady Lock-out state waiting for manual reset from user and re-initialization by closing the breaker. © Arcteq Relays Ltd...
  • Page 228 Recloser starts to calculate the Shot1 Dead Time for closing the breaker. 4. Dead Time for Shot1 is exceeded and autorecloser sends close request for the Object breaker, the close conditions are met and the breaker close command is sent to breaker close coil. © Arcteq Relays Ltd...
  • Page 229 In this example fault is cleared by the high speed autoreclosing. Figure. 5.5.4. - 136. Settings for overcurrent reclosing with two shots. This type of sequence represents 75-85% of all the faults in the medium voltage overhead line network. © Arcteq Relays Ltd...
  • Page 230 0. Also is possible to set the AR Reclaim not to be used after successful reclosing cycle. 7. Autoreclosing Reclaim Time is exceeded and Autorecloser is set to Ready state waiting for next request. © Arcteq Relays Ltd...
  • Page 231 The entering to next state can be controlled by Arcing time and Discrimination time settings. These settings are either or type which means that if Arcing time is selected Discrimination time cannot be selected for same request and same shot simultaneously. © Arcteq Relays Ltd...
  • Page 232 Autorecloser function can be divided into starter, shot selector state machine, sorter and shot blocks which operate dynamically during the reclosing cycles based on the given settings and input signals monitoring. Autorecloser behavior can be changed dynamically even during the cycle based on programmed reclosing scheme and active requests. © Arcteq Relays Ltd...
  • Page 233 Input for dynamically block the autoreclosing. When input is activated the recloser will halt its binary spontaneous operation and refuses any further requests. When signal is released recloser will continue its signal in blocking operation as were before receiving this signal. the IED © Arcteq Relays Ltd...
  • Page 234 AR Running well as into communication protocols. When autorecloser is executing shot requested by AR1 priority this signal is activated. Signal can be AR1 Request On connected to any relay IO as well as into communication protocols. © Arcteq Relays Ltd...
  • Page 235 Selection of the monitored / controlled breaker object. This selection de nes the Object the 2:Object 3 autorecloser monitoring and control signals are issued. This selection can be changed Object 3:Object 4 dynamically by setting group selection in real time in the IED. Default setting is Object 1. 4:Object 5 © Arcteq Relays Ltd...
  • Page 236 0.000s Arcing or Discrimination time is disabled in the autoreclosing scheme. This 1,2,3,4,5 step of 0.005s selection can be changed dynamically by setting group selection in real time in the Action time IED. Default setting 0.000s. © Arcteq Relays Ltd...
  • Page 237 60 second dead time. If AR4 or 5 requests are activated, from the corresponding rows from left to right and from up to down can be seen the autoreclosing schemes for each request. © Arcteq Relays Ltd...
  • Page 238 The AR function generates events and registers from the status changes of monitored signals as well as control command fails and operations. To main event buffer it is possible to select status “On” or “Off” messages. © Arcteq Relays Ltd...
  • Page 239 AR5 Request On 4060 AR5 Request Off 4061 Critical Request On 4062 Critical Request Off 4063 AR Running On 4064 AR Running Off 4065 Shot 1 Execute On 4066 Shot 1 Execute Off 4067 Shot 2 Execute On © Arcteq Relays Ltd...
  • Page 240 AR Status:, AR is ready, AR is not running, AR2 Requested, Executing Shot1 dd.mm.yyyy hh:mm:ss.mss AR Timers: No timers running 0.000 s AR Status:, AR is ready, AR is not running, Start time counting, AR2 Requested, Executing Shot1 dd.mm.yyyy hh:mm:ss.mss AR Timers: Start Delay 0.000 s © Arcteq Relays Ltd...
  • Page 241  OBJ1 Close Command On dd.mm.yyyy hh:mm:ss.mss 2962  OBJ1 Status Change On dd.mm.yyyy hh:mm:ss.mss 2944  OBJ1 Object Intermediate dd.mm.yyyy hh:mm:ss.mss 2946  OBJ1 Object Close dd.mm.yyyy hh:mm:ss.mss 2961  OBJ1 Close Command Off dd.mm.yyyy hh:mm:ss.mss 4087  AR1 Shot Reclaim Time On © Arcteq Relays Ltd...

  • Page 242: Cold Load Pick-Up (Clpu)

    Outputs of the function are CLPU act and Blocked signals. Setting parameters are static inputs for the function which are changed only by user input in the setup phase of the function. CLPU function utilizes total of eight separate setting groups which can be selected from one common source. © Arcteq Relays Ltd...
  • Page 243 (Im) per all three phases. Reset ratio of 97 % is inbuilt in the function and is always related to the settingvalue. The setting value is common for all measured phases and single-, dual- or all phases Im exceed of the Iset value will cause pick-up operation of the function. © Arcteq Relays Ltd...
  • Page 244 Also this parameter operates as “reclaim” time for the CLPU function in case the inrush current is not immediately initiated in the start-up sequence. Few typical cases of CLPU situations are presented in the gures below. © Arcteq Relays Ltd...
  • Page 245 Tmax time. When the measured current is in between of ILow and IHigh the start-up condition is considered to be over. The CLPU signal can be prolonged over this time by setting Tmin to higher value than 0.000s. © Arcteq Relays Ltd...
  • Page 246 CLPU signal is issued. If the CLPU is wanted to be activated in shorter time or directly when the measured current is below the ILow setting the Tset parameter can be set to lower value and even to 0.000s delay for immediate operation. © Arcteq Relays Ltd...
  • Page 247 CLPU activates after current has been under ILow  setting for time Tset . When current exceed the IHigh setting the maximum allowed CLPU timer start to count until Tmax time. In this example the measured current is exceeding the IOver setting during the startup situation and causes the CLPU signal immediate release. © Arcteq Relays Ltd...
  • Page 248 IHigh setting the maximum allowed CLPU timer start to count until Tmax time. In this example the measured current is over the set IHigh setting until Tmax time and causes the release of the CLPU signal. © Arcteq Relays Ltd...
  • Page 249 CLPU activates after current has been under ILow setting for time Tset. When current exceed the ILow setting but not IHigh the CLPU signal is active until the Tmin time. If no inrush is noticed during the Tmin time the CLPU signal is released. © Arcteq Relays Ltd...
  • Page 250 Table. 5.5.5. - 201. Event codes of the CLPU function Event Number Event channel Event block name Event Code Description 2688 CLP1 LowStart ON 2689 CLP1 LowStart OFF 2690 CLP1 HighStart ON 2691 CLP1 HighStart OFF 2692 CLP1 LoadNormal ON © Arcteq Relays Ltd...

  • Page 251: Switch On To Fault (Sotf)

    In the following gure is presented the simpli ed function block diagram of the SOTF function. Figure. 5.5.6. - 148. Simpli ed function block diagram of the SOTF function. © Arcteq Relays Ltd...
  • Page 252 SOTF Init On 3905 SOF1 SOTF Init Off 3906 SOF1 SOTF Block On 3907 SOF1 SOTF Block Off 3908 SOF1 SOTF Active On 3909 SOF1 SOTF Active Off 3910 SOF1 SOTF Trip On 3911 SOF1 SOTF Trip Off © Arcteq Relays Ltd...

  • Page 253: Synchrocheck Function Δv/Δa/Δf (25)

    SYN3 supervises the synchronization condition between U3 and U4 channels. Figure. 5.5.7. - 149. Example connection of synchrocheck function in 3LN+U4 mode when the SYN1 stage is in use and UL1 is the reference voltage. © Arcteq Relays Ltd...
  • Page 254 Figure. 5.5.7. - 150. Example connection of synchrocheck function in 2LL+U3+U0 mode when the SYN2 stage is in use and UL12 is the reference voltage. Figure. 5.5.7. - 151. Example connection of synchrocheck function in 2LL+U3+U4 mode when the SYN3 stage is in use and UL12 is the reference voltage. © Arcteq Relays Ltd...
  • Page 255 AQ-F255 Instruction manual Version: 2.00 Figure. 5.5.7. - 152. Example application of synchrocheck over one breaker in 3LL and 3LN VT connection situations. © Arcteq Relays Ltd...
  • Page 256 AQ-F255 Instruction manual Version: 2.00 Figure. 5.5.7. - 153. Example application of synchrocheck over one breaker with 2LL VT connection. © Arcteq Relays Ltd...
  • Page 257 AQ-F255 Instruction manual Version: 2.00 Figure. 5.5.7. - 154. Example application of synchrocheck over two breakers in 2LL+U3+U4 mode. Reference of the U3 or U4 voltages may be U12, U23 or U31. © Arcteq Relays Ltd...
  • Page 258 U live > and U dead <   parameters. Parameter Syn U conditions is used to determine which conditions have to be met in addition to the previously mentioned three aspects to consider the systems synchronized. © Arcteq Relays Ltd...
  • Page 259 If SYN OK function has been activated before blocking signal it will reset. From blocking of the function a HMI display event as well as time stamped blocking event with information of the startup voltage values and fault type is issued. © Arcteq Relays Ltd...
  • Page 260 The synchrocheck function generates events and registers from the status changes like syn ok, bypass and blocked. To main event buffer is possible to select status “On” or “Off” messages. The synchrocheck function offers three independent instances which events are segregated for each instance operation. © Arcteq Relays Ltd...
  • Page 261 SYN3 Blocked Off 2910 SYN1 SYN3 Ok On 2911 SYN1 SYN3 Ok Off 2912 SYN1 SYN3 Bypass On 2913 SYN1 SYN3 Bypass Off 2914 SYN1 SYN3 Volt condition OK 2915 SYN1 SYN3 Volt cond not match © Arcteq Relays Ltd...

  • Page 262: Ma Output Control

    Table. 5.5.8. - 211. Main settings of the mA outputs Name Range Default Description Enable mA Out Channels 1&2 0:Disabled mA option card 1 0:Disabled Enables mA output cards outputs. Enable mA Out Channels 3&4 1:Enabled © Arcteq Relays Ltd...
  • Page 263 Output 1-4 Hardware 3=SlotC; found 4=SlotD; 5=SlotE; 6=SlotF; 7=SlotG; Indicates in which option card slot mA output card is 8=SlotH; located in. 9=SlotI; 10=SlotJ; 11=SlotK; mA Output 5-8 Hardware 12=SlotL; found 13=SlotM; 14=SlotN; 15=Too many cards installed © Arcteq Relays Ltd...
  • Page 264 For example, a value for the lter time constant is 2 seconds for a 1 second period time of a disturbance oscillation. © Arcteq Relays Ltd...
  • Page 265 0:Floating point 1:Integer out Scaled value (Floor) 0:Floating Rounds the milliamp signal output as selected, handling 2:Integer point (Ceiling) 3:Integer (Nearest) Input value 1 0...4000 0.00001 Measured milliamp input value at curve point 1. © Arcteq Relays Ltd...

  • Page 266: Monitoring Functions

    ON/OFF events to the common event buffer from each of the two output signal. Time stamp resolution is 1ms. Function provides also cumulative counters for CTS alarm and BLOCKED events. Simpli ed function block diagram of CTS functionIn is presented in the following gure . © Arcteq Relays Ltd...
  • Page 267 Fundamental angle of phase L2/B current 5 ms IL3 Ang Fundamental angle of phase L3/C current 5 ms I01 Ang Fundamental angle of residual input I01 5 ms I02 Ang Fundamental angle of residual input I02 5 ms © Arcteq Relays Ltd...
  • Page 268 If blocking signal is active when pick-up element activates a BLOCKED signal will be generated and the function shall not process the situation further. If START function has been activated before blocking signal it will reset and the release time characteristics are processed as in case of when pick-up signal is reset. © Arcteq Relays Ltd...
  • Page 269 General properties of a protection function. Typical CTS cases In following gures are presented few typical cases of CTS situations and setting effects. Figure. 5.6.1. - 164. System in case when all is working properly and no fault is present. © Arcteq Relays Ltd...
  • Page 270 CTS conditions and as well as in the secondary circuit fault the CTS will issue alarm if this state continues until the set time has been spent. This means that the CTS do not supervise only the secondary circuit but also the primary circuit. © Arcteq Relays Ltd...
  • Page 271 By adjusting the Iset Highlimit and Iset Lowlimit setting parameters according to the application normal behavior, the operation of the CTS can be set to very sensitive for broken circuit/conductor faults. © Arcteq Relays Ltd...
  • Page 272 Figure. 5.6.1. - 170. System in case when secondary phase current wiring is broken. When phase current wire is broken all of the conditions are met in the CTS and alarm shall be issued in case if the situation continues until the set alarming time is met. © Arcteq Relays Ltd...
  • Page 273 Function includes 12 last registers where the triggering event of the function (ALARM activated or blocked) is recorded with time stamp and process data values. Table. 5.6.1. - 220. Event codes of the CTS function instance Event Number Event channel Event block name Event Code Description © Arcteq Relays Ltd...

  • Page 274: Fuse Failure Vts (60)

    Fundamental RMS measurement of voltage U 5 ms Positive sequence voltage 5 ms Negative sequence voltage 5 ms Zero sequence voltage 5 ms Fundamental angle of U voltage 5 ms Fundamental angle of U voltage 5 ms © Arcteq Relays Ltd...
  • Page 275 If the blocking signal is not activated when the pick-up element activates, a START signal is generated and the function proceeds to the time characteristics calculation. © Arcteq Relays Ltd...
  • Page 276 VTS function register content. This information is available in 12 last recorded events for all provided instances separately. Table. 5.6.2. - 225. Register content. Event Volt 1,2,3 Input A,B,C Trip time Used Date & Time System status status angle diff remaining code © Arcteq Relays Ltd...

  • Page 277: Disturbance Recorder (Dr)

    U 8/16/32/64s/c 1(2) Line to neutral U or line to line voltage U 8/16/32/64s/c 2(3) Line to neutral U ,line to line voltage U , zero sequence voltage U or synchrocheck voltage 8/16/32/64s/c 3(1) © Arcteq Relays Ltd...
  • Page 278 Maximum amount of recordings possible to store in the memory of IED. 0…2 recordings Max length 0…1800 s 0.001 Maximum settable length of a single recording, recording Recordings How many recordings stored in the memory of IED. 0…2 in memory © Arcteq Relays Ltd...
  • Page 279 200ms is recorded before “I> TRIP” and 800ms is recorder after. 4. Sample of each recorder analog signal is taken 64 times in a cycle. With 50Hz system frequency it means that sample is taken every 312.5µs. Digital channels are tracked every 5 milliseconds. © Arcteq Relays Ltd...
  • Page 280 Though if needed it is also possible to con rm the length by using the following calculation. Please note that the following calculation assumes that DR doesn’t share the 64MB space with any other les in the FTP. © Arcteq Relays Ltd...
  • Page 281 Recordings are packed comtrade les. Zip- le includes *.cfg and *.dat. AQviewer is capable to open original packed zip les directly or comtrade les as they are as far as both *.cfg and *.dat are located in same directory. Figure. 5.6.3. - 174. Open stored recordings. © Arcteq Relays Ltd...
  • Page 282 -text appears when moving mouse cursor is on top of the icon. In this example line to neutral voltages UL1, Ul2 and UL3 are selected and moved to the right side. Con rm plotter by pressing OK –key. © Arcteq Relays Ltd...
  • Page 283 The DR function generates events from the status changes of the function. To main event buffer is possible to select status “On” or “Off” messages. Table. 5.6.3. - 228. Event codes of DR function. Event Number Event channel Event block name Event Code Description 4096 Recorder triggered On © Arcteq Relays Ltd...

  • Page 284: Measurement Recorder

    Record le location can be changed by editing the “Path”- eld. File name can be changed from the “File Name”- eld.  Hitting the red “Record”-button will start the recorder. Closing the measurement recorder-dialog will not stop the recording. To stop the recording, blue “Stop”-button must be pressed. © Arcteq Relays Ltd...
  • Page 285 Res.Curr.I01 TRMS Pri U1Volt Pri L2 Imp.React.Cap.E.kvarh Res.Curr.I02 TRMS Pri U2Volt Pri L2 Exp/Imp React.Cap.E.bal.Mvarh Sec.Pha.Curr.IL1 U3Volt Pri L2 Exp/Imp React.Cap.E.bal.kvarh Sec.Pha.Curr.IL2 U4Volt Pri L2 Exp.React.Ind.E.Mvarh Sec.Pha.Curr.IL3 U1Volt Pri TRMS L2 Exp.React.Ind.E.kvarh Sec.Res.Curr.I01 U2Volt Pri TRMS L2 Imp.React.Ind.E.Mvarh © Arcteq Relays Ltd...
  • Page 286 P-P Curr.I01 System Volt UL23 mag (kV) Exp/Imp React.Ind.E.bal.Mvarh P-P Curr.I02 System Volt UL31 mag Exp/Imp React.Ind.E.bal.kvarh Pha.angle IL1 System Volt UL31 mag (kV) Other measurements Pha.angle IL2 System Volt UL1 mag TM> Trip expect mode © Arcteq Relays Ltd...
  • Page 287 Pha.Curr.I”L2 L2 Cos(phi) L1 Char current Pha.Curr.I”L3 L3 Apparent Power (S) L2 Bias current Res.Curr.I”01 L3 Active Power (P) L2 Diff current Res.Curr.I”02 L3 Reactive Power (Q) L2 Char current Calc.I”0 L3 Tan(phi) L3 Bias current © Arcteq Relays Ltd...

  • Page 288: Circuit Breaker Wear-Monitor (Cbw)

    CBW function is integrated into the controllable object function and can be enabled and set under object function. CBW function is independent function and initializes as separate independent instance which has own events and settings not related to the object it is linked © Arcteq Relays Ltd...
  • Page 289 Alarm 1 and Alarm 2 events. Operations left for each phase can be monitored also in the function. In the following gure the simpli ed function block diagram of the CBW function is presented. Figure. 5.6.5. - 179. Simpli ed function block diagram of the CBW function. © Arcteq Relays Ltd...
  • Page 290 0 … 200000 Pick-up threshold for remaining operations. When the remaining 100 op operations operation operations is below this setting Alarm 2 signal is activated. Setting example Setting example: Tavrida ISM/TEL-24-16 / 800 – 057 circuit breaker © Arcteq Relays Ltd...
  • Page 291 Value Current 1 (Inom) 0.80 kA Operation 1 (Inom) 30000 Op Current 2 (Imax) 16.00 kA Operations 2 (Imax) 100 Op Enable Alarm 1 1: Enabled Alarm 1 Set 1000 operations Enable Alarm 2 1: Enabled © Arcteq Relays Ltd...

  • Page 292: Fault Locator (21Fl) X → Km

    Time stamp resolution is 1ms. Function provides also cumulative counter for fault locator triggering events. Measured input values Function block uses analog current and voltage measurements and calculated phase-to-phase loop impedances. © Arcteq Relays Ltd...
  • Page 293 From blocking of the function a HMI display event as well as time stamped blocking event with information of the startup voltage values and fault type is issued. © Arcteq Relays Ltd...

  • Page 294: Total Harmonic Distortion Monitor (Thd)

    User has possibility to set also the alarming limits for each measured channels if required by the application. THD of the measured signals can be selected either amplitude- or power ratio THD. The difference is in the calculation formula: © Arcteq Relays Ltd...
  • Page 295 THD Start and Alarm act and BLOCKED events. In the following gure is presented the simpli ed function block diagram of the THD function. Figure. 5.6.7. - 181. Simpli ed function block diagram of the THD function. © Arcteq Relays Ltd...
  • Page 296 Pick-up setting for THD alarm element from the phase currents. The measured THD 0.10 … IsetPh 0.01% 20.00% value has to be over this setting on at least one of the measured phases to activate 200.00% the alarm signal. © Arcteq Relays Ltd...
  • Page 297 In the function is available 12 last registers where the triggering event of the function (THD start, alarm or blocked) is recorded with time stamp and process data values. Table. 5.6.7. - 244. Event codes of the THD function Event Number Event channel Event block name Event Code Description © Arcteq Relays Ltd...

  • Page 298: Measurement Value Recorder

    Up to 8 magnitudes can be set to be recorded when function is triggered. Overcurrent fault type, voltage fault type and tripped stage can be recorded and reported forward to SCADA. © Arcteq Relays Ltd...
  • Page 299 Positive sequence resistance, reactance and impedance values and angles RseqAng, XseqAng, ZseqAng GL1, GL2, GL3, G0 BL1, BL2, BL3, B0 Conductances, susceptances and admittances YL1, YL2, YL3, Y0 YL1angle, YL2angle, YL3angle Admittance angles Y0angle Others Description © Arcteq Relays Ltd...
  • Page 300 VREC function generates events from function triggering. To main event buffer it is possible to select “On” or “Off” status messages. Table. 5.6.8. - 247. Event codes of the VREC function. Event Number Event channel Event block name Event Code Description © Arcteq Relays Ltd...
  • Page 301 AQ-F255 Instruction manual Version: 2.00 9984 VREC1 Recorder triggered On 9985 VREC1 Recorder triggered Off © Arcteq Relays Ltd...

  • Page 302: System Integration

    Following Modbus function types are supported: Read Holding Register, 3 Write Single Register, 6 Write Multiple Registers, 16 Read/Write Multiple Registers, 23 Following data can be accessed using both Modbus TCP and Modbus RTU Device measurements Device I/O Commands Events Time © Arcteq Relays Ltd...

  • Page 303: Modbusio

    Channel selection for the module. For each of the 8 channels of the IO module connected thermocouple can be selected. T.C. type [+-20mA,Type J, Type K, Type T, Type E, Type R, Type S] Thermocouple type setting. © Arcteq Relays Ltd...

  • Page 304: Iec 61850

    Time synchronization Currently used 61850 setup of the device can be viewed in the IEC61850 tool ( Tools → IEC61850 ). For a list of available Logical Nodes in the Arcteq implementation browse the 61850 tree. See following picture: Figure. 6.1.4. - 182. IEC 61850 tool buttons.
  • Page 305 BRCB’s. All of these datasets can be edited. By un-checking both of the GOOSE publisher datasets GOOSE publisher service will be disabled. See following picture. Figure. 6.1.4. - 184. DataSets window for adding/removing and editing datasets. © Arcteq Relays Ltd...

  • Page 306: Goose

    Enable setting for GOOSE subscriber. 6.1.5. GOOSE Both GOOSE publisher and subscriber are supported by the Arcteq implementation. GOOSE subscriber is enabled by parameter setting ( Communication → Protocols → IEC61850 → GOOSE subscriber enable ) and GOOSE inputs are con gured using HMI or Aqtivate tool. For each of the Goose inputs there is also an input quality signal which can also be used in the internal logic.
  • Page 307 GOOSE input signals on the receiving side together with the quality information for that binary signal. The quality information in the incoming frame will be ORed with GOOSE reception timeout supervision information so that quality information for each GOOSE input can be used in relay logic. © Arcteq Relays Ltd...

  • Page 308: Iec 103

    (slave). The IEC 103 protocol can be selected for the available serial ports of the device. A master or primary station can communicate with the Arcteq device and receive information by polling from the slave device. Disturbance recordings transfer is not supported.

  • Page 309: Spa Protocol

    , harmonic 9 , harmonic 11 , harmonic 13 , harmonic h., 15 h., 17 h., 19 , harmonic 17 , harmonic 19 harmonic current. I1,I2,I0Z Positive sequence current, negative sequence current and zero sequence current © Arcteq Relays Ltd...
  • Page 310 System f. Used tracking frequency at the moment Ref f1 Reference frequency 1 Ref f2 Reference frequency 1 M thermal T Motor thermal temperature F thermal T Feeder thermal temperature T thermal T Transformer thermal temperature © Arcteq Relays Ltd...
  • Page 311 Scale current values to primary 1:Yes values 0:Currents; 1:Voltages; 2:Powers; Slot 1…8 Magnitude selection Selection of slots measured magnitude category 3:Imp.(ZRX).Adm. (YGB); 4:Others; Described in table Selection of the magnitude in the previously selected Slot 1…8 Magnitude (x) above category © Arcteq Relays Ltd...

  • Page 312: Applications And Connection Examples

    AQ-F255 Instruction manual Version: 2.00 7. Applications and connection examples 7.1. Connections AQ-F255 Figure. 7.1. - 187. AQ-F255 variant without add-on modules. © Arcteq Relays Ltd...
  • Page 313 AQ-F255 Instruction manual Version: 2.00 Figure. 7.1. - 188. AQ-F255 variant with binary input and output modules. © Arcteq Relays Ltd...

  • Page 314: Example Feeder Application Connection

    Connection example application with three lines to neutral voltages and zero sequence voltage connected. Three phase currents and residual current are connected as well. Binary inputs are connected for breaker status indication. Binary outputs are used for breaker control. © Arcteq Relays Ltd...

  • Page 315: Phase, 3-Wire Aron Input Connection

    AQ-F255 Instruction manual Version: 2.00 Figure. 7.2. - 190. Application example for AQ-F255 7.3. 3-phase, 3-wire ARON input connection This chapter presents a connection example of an application with protection current transformers for just two phases. Connection is suitable for both motor –and feeder applications.

  • Page 316: Trip Circuit Supervision (95)

    Basically, activation delay just a bit longer than the operation time of circuit breaker would be long enough. When CB failure protection is used it might be good to add the CBFP operation time to the digital input activation time (t ). See attached picture below. IEDrelease CBFP © Arcteq Relays Ltd...
  • Page 317 The main difference between non-lathed and latched control in trip circuit supervision is that when latched control is used it is not possible to monitor the trip circuit in open state due the digital input is shorted by the trip output of the IED. © Arcteq Relays Ltd...
  • Page 318 While the breaker is open the logic is blocked. Logical output can be used in output matrix or in SCADA as pleased. Figure. 7.4. - 196. TCS block scheme when non-latched trip output is not used. © Arcteq Relays Ltd...

  • Page 319: Construction And Installation

    –and current measurement modules. In the gure below is presented non-optioned model (AQ-X255-XXXXXXX- AAAAAAAAAAA ) and partially optioned model (AQ-X255-XXXXXXX- BBBBBCAAAAJ ) of the AQ-X255 IED. Figure. 8.1. - 197. Modular construction of AQ-X255 IED © Arcteq Relays Ltd...
  • Page 320 For a eld upgrade this means that the add-on module has to be ordered from Arcteq Ltd. or representative who shall provide the add-on module with corresponding unlocking code in order the device to be operating correctly after upgrading the hardware con guration.

  • Page 321: Cpu, Io And Power Supply Module

    Communication port A, RJ-45. For Modbus TCP and station bus communications. Communication port B, RS-485. For Modbus RTU and IEC-103 SCADA communications. Pin-out starting from COM B: the left: 1=DATA +, 2=DATA -, 3=GND, 4&5=Terminator resistor enabled by shorting. © Arcteq Relays Ltd...
  • Page 322 0.001 DIx Drop-off time De nes the delay for status change from 1 to 0 0.000…1800.000 s 0.000 s Adds 30 ms deactivation delay to account for alternating 0:Disabled DIx AC Mode 0:Disabled current. 1:Enabled © Arcteq Relays Ltd...

  • Page 323: Current Measurement Module

    Quantization of the measurement signal is applied with 18 bit AD converters and the sample rate of the signal shall be 64 samples / power cycle in system frequency range of 6 Hz to 75 Hz. © Arcteq Relays Ltd...

  • Page 324: Voltage Measurement Module

    Quantization of the measurement signal is applied with 18 bit AD converters and the sample rate of the signal shall be 64 samples / power cycle in system frequency range of 6 Hz to 75 Hz. For further details refer to the “Technical data” section of this document. © Arcteq Relays Ltd...

  • Page 325: Binary Input Module (Di8) (Option)

    NO/NC (normally open/-closed) selection. Naming convention of the binary inputs provided by this module is presented in the chapter 6 Construction and installation. For technical details refer to the “Technical data” section of this document © Arcteq Relays Ltd...
  • Page 326 User settable normal state (normally open/normally closed) de nes if the digital input is considered activated when the digital input channel is energized. Figure. 8.5. - 203. Digital input state when energizing and de-energizing the digital input channels. © Arcteq Relays Ltd...

  • Page 327: Binary Output Module (Do5) (Option)

    All output contacts are mechanical type. Rated voltage of the NO/CO outputs is 250VAC/DC. Naming convention of the binary outputs provided by this module is presented in the chapter Construction and installation. For further details refer to the “Technical data” section of this document. © Arcteq Relays Ltd...

  • Page 328: Arc Protection Module (Option)

    Notice that the delay of binary input lies between 5…10ms. BI and HSO1…2 are not visible in Device IO → Binary Inputs or Binary Outputs -menus. Binary input and high speed outputs are programmable only in Arc Matrix menu. © Arcteq Relays Ltd...

  • Page 329: Rtd & Ma Input Module (Option)

    Supported Thermocouple: Type K, Type J, Type T and Type S Two mA-input channels are also available in the option card. If mA-input channels are used only the four rst channels are available for RTD and TC measurements. © Arcteq Relays Ltd...

  • Page 330: Serial Rs232 Communication Module (Option)

    AQ-F255 Instruction manual Version: 2.00 Figure. 8.8. - 207. Connection of different sensor types. 8.9. Serial RS232 communication module (option) Figure. 8.9. - 208. AQ-2xx Serial RS232-card connectors © Arcteq Relays Ltd...
  • Page 331  Option card includes two serial communication interfaces. COM E is a serial ber interface with glass/plastic option. COM F is a RS-232 interface. To use COM F IRIG-B time sync Time sync source should be set to IRIG-B in General menu. © Arcteq Relays Ltd...

  • Page 332: Lc100 Ethernet Communication Module (Option)

    Optional LC 100 Mbps Ethernet card supports HSR and PRP protocols according to IEC 61850 substation communication standard. Card has IEEE1588 (PIP) clock sync functionality. Card has two PRP/HSR ports which are 100Mbps ber ports and can be con gured to 100Mbps or 10 Mbps. © Arcteq Relays Ltd...

  • Page 333: Maout & Mainput Module (Option)

    When installing to a rack, the device will take ½ of the rack width and total of two devices can be installed to same rack in parallel. Device panel installation and cut-outs are described below. © Arcteq Relays Ltd...
  • Page 334 AQ-F255 Instruction manual Version: 2.00 Figure. 8.12. - 211. Dimensions of the IED. Figure. 8.12. - 212. Installation of the IED © Arcteq Relays Ltd...
  • Page 335 AQ-F255 Instruction manual Version: 2.00 Figure. 8.12. - 213. Panel cut-out and spacing of the IED. © Arcteq Relays Ltd...

  • Page 336: Technical Data

    Figure. 9.1.1.1. - 214. Energy and power metering accuracy in optional 0.2 S accuracy model (See order code for details). 9.1.1.2. Current measurement Table. 9.1.1.2. - 258. Current measurement module Phase current inputs (A, B, C) © Arcteq Relays Ltd...
  • Page 337 6Hz to 75Hz fundamental, up to 31st harmonic current Current measurement range 1mA…75A(rms) 0.002xIn…25xIn < ±0.5% or < ±0.6mA Current measurement inaccuracy 25xIn…375xIn < ±1.0% < ±0.2 ° (I > 0.01A) Angle measurement inaccuracy < ±1.0 ° (I ≤ 0.01A) Burden (50Hz/60Hz) <0.1VA © Arcteq Relays Ltd...

  • Page 338: Voltage Measurement

    Frequency measurement performance Frequency measuring range 6…75 Hz fundamental, up to 31 harmonic current or voltage Inaccuracy 10 mHz 9.1.2. CPU & Power supply 9.1.2.1. Auxiliary voltage Table. 9.1.2.1. - 261. Power supply model A Rated values © Arcteq Relays Ltd...

  • Page 339: 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. - 264. Rear panel system communication port A Port Port media Copper Ethernet RJ-45 Number of ports 1pcs Features © Arcteq Relays Ltd...

  • Page 340: Cpu Binary Inputs

    Software settable: Normally On / Normally Off Current drain 2 mA Terminal block connection Solid or stranded wire Maximum wire diameter: Phoenix Contact MSTB2,5-5,08 2.5mm 9.1.2.4. CPU Binary outputs Table. 9.1.2.4. - 267. Normal Open binary outputs Rated values © Arcteq Relays Ltd...

  • Page 341: Option Cards

    5...11 ms Settings Pick-up threshold Software settable: 5…240V, by step of 1V Release threshold Software settable: 5…240V, by step of 1V Pick-up delay Software settable: 0…1800s Polarity Software settable: Normally On / Normally Off Terminal block connection © Arcteq Relays Ltd...

  • Page 342: Binary Output Module

    Rated auxiliary voltage 250Vdc Continuous carry Make and carry 0.5s Make and carry 3s Breaking capacity, DC (L/R = 40 ms) 1A / 110W Control rate Operation delay <1ms Polarity Normally Off Contact material Semiconductor Terminal block connection © Arcteq Relays Ltd...

  • Page 343: Maout & Main Module

    0...24 mA, setting step 0.001mA Source signal scaling range -1000000...1000000, setting step 0.0001 9.1.3.5. RTD & mA input module Table. 9.1.3.5. - 275. RTD & mA input module technical data Channels 1-8 2/3/4-wire RTD and thermocouple sensors Pt100 or Pt1000 © Arcteq Relays Ltd...

  • Page 344: Rs232 & Serial Ber Communication Module

    50/125μm or 62.5/125μm multimode (glass) 9.1.4. Display Table. 9.1.4. - 278. HMI TFT display technical data Dimensions and resolution Number of dots / resolution 800 x 480 Size 7 inches Display Type of display Color RGB color © Arcteq Relays Ltd...
  • Page 345 Instant reset time and start-up reset <50 ms Note! Release delay does not apply on phase speci c tripping. 9.2.1.2. Non-directional earth fault (50N/51N) I0> Table. 9.2.1.2. - 280. Non-directional earth-fault (50N/51N) technical data Input signals © Arcteq Relays Ltd...

  • Page 346: Directional Overcurrent (67) Idir

    Table. 9.2.1.3. - 281. Directional overcurrent (67) technical data Input signals Phase current fundamental freq RMS Phase current TRMS Phase current peak-to-peak Input magnitudes P-P +U voltage fundamental frequency RMS P-E voltage fundamental frequency RMS Pick-up Characteristic direction Directional, Non-directional © Arcteq Relays Ltd...

  • Page 347: Directional Earth Fault(67N) Iodir

    Measured residual current I02 (0.2 A) Calculated residual current I0Calc (5 A) Measured zero sequence voltage U0 Used voltage magnitude Calculated zero sequence voltage U0 Unearthed (Varmetric 90°) Characteristic direction Petersen coil GND (Wattmetric 180°) Grounded (Adjustable sector) © Arcteq Relays Ltd...

  • Page 348: Intermittent Earth Fault (67Nt) Ioint

    Measured zero sequence voltage U0 Spikes to trip 1…50, setting step 1 Pick-up current setting 0.05…40.00 x In, setting step 0.001 x In Pick-up voltage setting 1.00…100.00 % U0n, setting step 0.01 x In Pick-up inaccuracy © Arcteq Relays Ltd...

  • Page 349: Current Unbalance (46/46R/46L) I2

    -IDMT minimum operating time; 20 ms ±20 ms Retardation time (overshoot) <5 ms Instant operation time Start time and instant operation time (trip):  (Im/Iset ratio >1.05) <70 ms Reset Reset ratio 97 % of pick-up setting © Arcteq Relays Ltd...

  • Page 350: Harmonic Overcurrent (50H/51H, 68) Ih

    Tripping: When using harmonic OC –stage for tripping make sure that the operation time is set to 20 ms (DT) or higher to avoid nuisance tripping due the above mentioned reason. © Arcteq Relays Ltd...

  • Page 351: Circuit Breaker Failure Protection (50Bf/52Bf) Cbfp

    ±3% of set pick-up value > 0.5 x In setting. - Starting ±5 mA < 0.5 x In setting Operation time Instant operation time 1.05 x Iset <30ms Reset Reset ratio No hysteresis Reset time <40ms © Arcteq Relays Ltd...

  • Page 352: Overvoltage (59) U

    P-P voltage fundamental frequency RMS Input magnitudes P-E voltage fundamental frequency RMS Pick-up 1 voltage Pick-up terms 2 voltages 3 voltages Pick-up setting 0.00…120.00 %Un, setting step 0.01 %Un Inaccuracy ±1.5 %U or ±30 mV -Voltage Low voltage block © Arcteq Relays Ltd...

  • Page 353: Neutral Overvoltage (59N) U0

    De nite time function operating time setting 0.00…1800.00 s, setting step 0.005 s Inaccuracy -De nite Time (U0m/U0set ratio 1.05→) ±1.0 % or ±45 ms IDMT operating time setting (ANSI / IEC) 0.02…1800.00 s, setting step 0.001 x parameter © Arcteq Relays Ltd...

  • Page 354: Sequence Voltage (47/27Pn/59Pn) U1/2

    Start time and instant operation time (trip): <65 ms -Um/Uset ratio 0.95/1.05→ Reset Reset ratio 97/103 % of pick-up voltage setting Reset time setting 0.010 … 10.000 s, step 0.005 s Inaccuracy: Reset time ±1.0 % or ±35 ms © Arcteq Relays Ltd...

  • Page 355: Over-/Under Frequency (81O/81U) F

    7...75 Hz. 9.2.1.15. Rate-of-change-frequency (81R) df/dt>/< Table. 9.2.1.15. - 293. Rate-of-change-frequency (81R) technical data Input signals Fixed Sampling mode Tracking Freq reference1 CT1IL1, CT2IL1, VT1U1, VT2U1 Freq reference2 CT1IL2, CT2IL2, VT1U2, VT2U2 Freq reference3 CT1IL3, CT2IL3, VT1U3, VT2U3 Pick-up © Arcteq Relays Ltd...

  • Page 356: Line Thermal Overload (49L) Tf

    Thermal Trip 0…150% by step of 1% Trip delay 0.000…3600.000s by step of 0.005s Restart Inhibit 0…150% by step of 1% Inaccuracy -    Starting ±0.5% of set pick-up value -    Operating time ±5 % or ± 500ms © Arcteq Relays Ltd...

  • Page 357: Over/Under/Reverse Power Protection (32/37) P>, P<, Prev

    Two per each channel total of 24 alarms available Pick-up Alarm setting range 101.00…2000.00 deg, setting step 0.1 deg either under or over setting. Inaccuracy ±3% of set pick-up value Reset ratio 97% of the pick-up setting Operation Operating time Typically <500 ms © Arcteq Relays Ltd...

  • Page 358: Vector Jump (78) Δα

    -Semiconductor outputs HSO1 and HSO2 Typically 10 ms (6.5…14 ms) -Regular relay outputs Typically 14 ms (10…18 ms) Arc BI only -Semiconductor outputs HSO1 and HSO2 Typically 7 ms (2…12 ms) -Regular relay outputs Typically 10 ms (6.5…15 ms) © Arcteq Relays Ltd...
  • Page 359 Object control during Autoreclosing See Autoreclosing technical sheet 9.2.2.3. Autoreclosing function (79) 0 → 1 Table. 9.2.2.3. - 301. Autoreclosing function (79) technical data Input signals Software signals (Protection, Logics, etc.) Input signals Binary inputs Requests © Arcteq Relays Ltd...

  • Page 360: Cold Load Pick-Up (Clp)

    One phase current IL1, IL2 or IL3 is enough to prolong blocking or to release blocking during overcurrent condition. 9.2.2.5. Switch on to fault (SOTF) Table. 9.2.2.5. - 303. Switch on to fault (SOTF) technical data Initialization signals SOTF activate input Any IED block input signal (Object closed signal etc.) © Arcteq Relays Ltd...

  • Page 361: Synchrocheck (25)

    U dead limit is not in use when set to 0 %Un. When SYN3 is used, SYN1 and SYN2 must have same reference voltage. In 3LN mode synchronization to L-N and L-L voltage both is possible. In 3LL/2LL modes synchronization only to L-L voltage is supported solution. © Arcteq Relays Ltd...
  • Page 362 0.00…1800.00 s, setting step 0.005 s Inaccuracy -De nite Time (Um/Uset ratio > 1.05 / 0.95) ±1.0 % or ±35 ms Instant operation time (alarm): (Um/Uset ratio > 1.05 / 0.95) <80 ms VTS MCB trip bus/line (external input) <50 ms © Arcteq Relays Ltd...
  • Page 363 - Operation counter ±0.5% of operations deducted 9.2.3.5. Total harmonic distortion (THD) Table. 9.2.3.5. - 309. Total harmonic distortion (THD) technical data Input signals Current measurement channels FFT result up to 31.st harmonic Input magnitudes component. Pick-up © Arcteq Relays Ltd...
  • Page 364 Pick-up current setting (optional) 0.01…50.00 x In, setting step 0.01 x In Inaccuracy ±1.5 %U   or ±30 mV Voltage Current ±0.5 %I or ±15 mA (0.10…4.0 x I Operation time Angle memory activation delay <20 ms (typically 5ms) © Arcteq Relays Ltd...

  • Page 365: Tests And Environmental

    Table. 9.3. - 313. Voltage tests Dielectric voltage test EN 60255-27, IEC 60255-5, EN 60255-1 2 kV, 50Hz, 1min Impulse voltage test EN 60255-27, IEC 60255-5 5 kV, 1.2/50us, 0.5J Physical environment compatibility Table. 9.3. - 314. Mechanical tests Vibration test © Arcteq Relays Ltd...
  • Page 366 Device dimensions (W x H x D mm) Casing height 208mm, width 257mm, depth 210mm Weight Net weight (Device) 1.5kg With package Weight Gross weight (With package) 2kg Package dimensions (W x H x D mm) 345(w) x 240(h) x 258(d) mm  © Arcteq Relays Ltd...

  • Page 367: Ordering Information

    Light point sensor unit (25000 Lux threshold) Max. cable length 200m Arcteq Ltd. AQ-01C Light point sensor unit (50000 Lux threshold) Max. cable length 200m Arcteq Ltd. AQ-02A Pressure and light point sensor unit Max. cable length 200m Arcteq Ltd. © Arcteq Relays Ltd...
  • Page 368 Version: 2.00 (8000 Lux threshold) AQ-02B Pressure and light point sensor unit Max. cable length 200m Arcteq Ltd. (25000 Lux threshold) AQ-02C Pressure and light point sensor unit Max. cable length 200m Arcteq Ltd. (50000 Lux threshold) © Arcteq Relays Ltd...

  • Page 369: Contact And Reference Information

    Wolf ntie 36 F 12 65200 Vaasa, Finland Contacts Phone: +358 10 3221 370 Fax: +358 10 3221 389 URL: url: www.arcteq. email sales: sales@arcteq. Technical support site: https://arcteq. /support-landing/ Technical support: +358 10 3221 388 (EET 8:00 – 16:00) © Arcteq Relays Ltd...

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