Arcteq AQ F205 Instruction Manual
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Arcteq AQ F205 Instruction Manual

Feeder protection relay
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INSTRUCTION MANUAL
AQ F205 – Feeder Protection Relay

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Summary of Contents for Arcteq AQ F205

  • Page 1 INSTRUCTION MANUAL AQ F205 – Feeder Protection Relay...
  • Page 2 Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. Local safety regulations should be followed. No responsibility is assumed by Arcteq for any consequences arising out of the use of this material. We reserve right to changes without further notice.

  • Page 3: Table Of Contents

    Instuction manual – AQ F205 Feeder protection IED 3 (404 TABLE OF CONTENTS 1 ABBREVIATIONS ......................6 2 GENERAL ......................... 7 3 IED USER INTERFACE ....................8 AQ 200 series local panel structure................ 8 IED programming ..................8 3.2.1 Basic configuration ..................8 3.2.2 Navigation in main configuration menus ............
  • Page 4 Instuction manual – AQ F205 Feeder protection IED 4 (404 4.3.1 Setting group selection (SGS) ..............245 4.3.2 Object control and monitoring (OBJ) ............253 4.3.3 Auto-reclosing 0  1 (79) ................. 262 4.3.4 Cold load pick-up (CLPU) ................. 291 4.3.5 Switch on to fault (SOTF) ................
  • Page 5 Instuction manual – AQ F205 Feeder protection IED 5 (404 9.1.2 Auxiliary voltage ..................369 9.1.3 Binary inputs ..................... 369 9.1.4 Binary outputs ................... 370 9.1.5 Communication ports ................370 Protection functions ................... 372 9.2.1 Current protection functions ..............372 9.2.2 Voltage protection functions ..............

  • Page 6: Abbreviations

    Instuction manual – AQ F205 Feeder protection IED 6 (404 BBREVIATIONS CB – Circuit breaker CBFP – Circuit breaker failure protection CT – Current transformer CPU – Central processing unit EMC – Electromagnetic compatibility HMI – Human machine interface HW – Hardware IED –...

  • Page 7: General

    Instuction manual – AQ F205 Feeder protection IED 7 (404 ENERAL The AQ-F205 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 configured according to the application IO requirements and the software determines the available functions.

  • Page 8: Ied User Interface

    Instuction manual – AQ F205 Feeder protection IED 8 (404 3 IED USER INTERFACE AQ 200 series IED user interface section is divided into hardware- and software user interface sections. Software interface is divided into local panel configuration and programming by using AQtivate 200 freeware software suite.
  • Page 9 Instuction manual – AQ F205 Feeder protection IED 9 (404 General, Protection, Control, Communication, Measurements and Monitoring. You can choose the main menu by using the four arrow keys and press enter. Figure 3.2.1-2 AQ-200 series IED basic navigation. Moving around in the five main quick displays is done by pressing navigation keys ...

  • Page 10: Navigation In Main Configuration Menus

    Instuction manual – AQ F205 Feeder protection IED 10 (404 Cancel key “ ” takes you one step back or holding it down for 3 seconds takes you back to general –menu “ ”.Cancel key is also used for alarm LEDs reset.
  • Page 11 Instuction manual – AQ F205 Feeder protection IED 11 (404 3.2.2.1 G ENERAL MENU General menu “ ” includes Device Info- and Function Comments sub-menus. EVICE Set name and location of the device.  Serial number and SW version of the IED.
  • Page 12 Instuction manual – AQ F205 Feeder protection IED 12 (404 UNCTION OMMENTS Set specific note to protection stage or  object. Note is visible under Info –menu of each stage. Figure 3.2.2.1-5 AQ-200 series IED Function Comments sub- menu.
  • Page 13 Instuction manual – AQ F205 Feeder protection IED 13 (404 3.2.2.2 P ROTECTION MENU Protection menu “ ” includes Stage activation sub-menu and sub-menus for different protection functions like Overcurrent, Earthfault, Seq. and balance and Supporting. Valid protection functions vary according IED type.
  • Page 14 Instuction manual – AQ F205 Feeder protection IED 14 (404 TAGE ACTIVATION Activation of different protection stages is  done in Stage activation –sub menu. Each protection stage and supporting function is disabled as standard. Activated menus will appear below the stage ...
  • Page 15 Instuction manual – AQ F205 Feeder protection IED 15 (404 Function is activated and disabled in Stage  activation menu. It is possible to disable function in Info menu as well. Function condition indicates whether the  stages condition is Normal, Start or Trip.
  • Page 16 Instuction manual – AQ F205 Feeder protection IED 16 (404 Figure 3.2.2.2-10 All group specific settings are done individually in Settings menu. Stage settings vary according different protection functions. With factory settings only one group of eight is activated. To enable more groups go to Control menu and select Setting...
  • Page 17 Instuction manual – AQ F205 Feeder protection IED 17 (404 Figure 3.2.2.2-11 AQ-200 series IED stage information is divided into two sections. Specific fault data of IEDs is stored in operation log under the register. Each of these 12 logs includes pre-fault current, fault current, time stamp and active group during the triggering.
  • Page 18 Instuction manual – AQ F205 Feeder protection IED 18 (404 Figure 3.2.2.2-12 AQ-200 series IED stage information is divided into two sections. Starting and tripping signals of protection stages are connected to physical outputs in Direct Output Control menu. It is possible to connect to output relay or to start- trip- or user configurable LED.
  • Page 19 Instuction manual – AQ F205 Feeder protection IED 19 (404 Figure 3.2.2.2-13 Protection stage related events are masked on and off individually under EventsEvent mask. Events are masked off as default. It is possible to activate desired events by masking them |x|.
  • Page 20 Instuction manual – AQ F205 Feeder protection IED 20 (404 ONTROLS NABLED Activation of different control functions is  done in Controls Enabled –sub menu. Each control function is disabled as standard. Active functions will appear below Control Functions –sub menu.
  • Page 21 Instuction manual – AQ F205 Feeder protection IED 21 (404 Figure 3.2.2.3-17 Group changing with pulse control only or with pulses and static signal. BJECTS Figure 3.2.2.3-18 AQ-200 series IED object controlling. Each activated object is visible in Objects menu. As default all objects are disabled. Each...
  • Page 22 Instuction manual – AQ F205 Feeder protection IED 22 (404 Control access may be set to Local- or  Remote control (local as default). When local control is enabled it is not possible to control object trough bus and vice versa.
  • Page 23 Instuction manual – AQ F205 Feeder protection IED 23 (404 Object open- and close signals of an object are connected to physical output relays.  Separate timeouts for objects are set in Settings menu. Synchronization wait- and Object  Ready wait timeouts are settable between 0.02…500.00 s (default 200ms, step 20ms). If time expires the controlling of object fails.
  • Page 24 Instuction manual – AQ F205 Feeder protection IED 24 (404 trip- or user configurable LED. Connection to outputs can be either latched |x| or non-latched Object blocking is done in Blocking Input Control menu. Blocking can be done by using digital inputs, logical inputs or outputs, stage start- trip- or blocked information or by using object status information.
  • Page 25 Instuction manual – AQ F205 Feeder protection IED 25 (404 Each enabled control function is listed below Control Functions menu. Every function includes same sub-menus as protections stages including Info, Settings, Registers, IO and Events. For further information concerning these sub-menus see chapter 3.2.2.2.
  • Page 26 Instuction manual – AQ F205 Feeder protection IED 26 (404 Digital input activation and release threshold follows the measured peak value. Activation time of input is between 5-10 milliseconds. Activation delay is configurable. Release time with DC is between 5-10 milliseconds. Release time with AC is less than 25 milliseconds.
  • Page 27 Instuction manual – AQ F205 Feeder protection IED 27 (404 Figure 3.2.2.3-26 Object output- and block signal setting. LED Settings menu has two sub-menus LED Description Settings and LED Color Settings. In LED Description Settings menu the label text of the LED can be modified. This label is visible in LEDs quick displays and matrixes.
  • Page 28 Instuction manual – AQ F205 Feeder protection IED 28 (404 Figure 3.2.2.3-27 AQ-200 series IED Binary Outputs menu. Binary inputs, Logic Outputs, protection stage status signals (start, trip & blocked etc.) and object status signals can be connected to output relay or to start- trip- or user configurable LEDs in Device IO matrix ...
  • Page 29 Instuction manual – AQ F205 Feeder protection IED 29 (404 32 logical input signal  status bits. Status is either 0 or 1. 32 quality bits of logical  input signals (GOOSE). Status is either 0 or 1. 1 stands for bad/invalid quality.
  • Page 30 Instuction manual – AQ F205 Feeder protection IED 30 (404 IP address of the IED is changeable. Default  IP-address varies from device to another. Network subnet mask is entered here.  Gateway is configured only when  communicating with IEDs in separate subnet.
  • Page 31 Instuction manual – AQ F205 Feeder protection IED 31 (404 3.2.2.5 M EASUREMENT MENU Measurement menu “ ” includes sub-menus for Transformers, Frequency, Current Measurement, Voltage measurement and Phasors depending of the IED type. Ratio of used current and voltage transformers is defined in Transformers sub-menu. System nominal frequency is specified in Frequency sub-menu.
  • Page 32 Instuction manual – AQ F205 Feeder protection IED 32 (404 REQUENCY Sampling mode is fixed as  standard and System nominal frequency should be set to desired level. In case the Sampling mode is set as tracking the IED will...
  • Page 33 Instuction manual – AQ F205 Feeder protection IED 33 (404 Figure 3.2.2.5-35 AQ-200 series IED Sequence components. Sequence components including positive, negative and neutral components are calculated for both voltage and current. Sequence sub-menu is divided into four groups which are Per- Unit, Primary, Secondary and Phase Angle.
  • Page 34 Instuction manual – AQ F205 Feeder protection IED 34 (404 HASORS Figure 3.2.2.5-37 AQ-200 series IED Phasors sub-menu. Measurement  Phasors have vector displays for voltage and currents. Also calculated components have own vector displays. Vectors can be seen in own display and additionally per unit values of measured or calculated components along with secondary and primary amplitudes are shown.
  • Page 35 Instuction manual – AQ F205 Feeder protection IED 35 (404 ONITORS NABLED Activation of different monitor functions is  done in Monitors Enabled sub-menu. Each Monitoring function is disabled as standard. Activated menus will appear below the  Monitor functions sub-menu.
  • Page 36 Instuction manual – AQ F205 Feeder protection IED 36 (404 ISTURBANCE Manual Trigger triggers the recording  instantly once when used. It is possible to clear the latest, oldest or  every stored recording at once. Maximum length of recording depends of the ...
  • Page 37 Instuction manual – AQ F205 Feeder protection IED 37 (404 EVICE IAGNOSTICS AQ-200 series IED Device Diagnostics gives  detailed feedback of the IED condition generally and whether option cards are installed correctly without problems. In case anything abnormal is noticed in ...

  • Page 38: Functions Of Aq-F205 Feeder Protection Ied

    Instuction manual – AQ F205 Feeder protection IED 38 (404 AQ-F205 F UNCTIONS OF EEDER ROTECTION In this chapter are presented the functions of AQ-F205 Feeder Protection relay. AQ-F205 includes following functions and amounts of instances of the functions. Table 4-1 Protection functions of AQ-F205...

  • Page 39: Measurements

    Instuction manual – AQ F205 Feeder protection IED 39 (404 NOV1 U0> NOV2 U0>> Neutral voltage protection (4 stages) NOV3 U0>>> NOV4 U0>>>> OPW1 P> Over power UPW1 P< Under power RPW1 Reverse power FRQV f>,f>>,f>>>,f>>>> 81O/81U Frequency protection (8 stages) f<,f<<,f<<<,f<<<<...
  • Page 40 Instuction manual – AQ F205 Feeder protection IED 40 (404 be correct it is essential to understand the concept of the AQ-2xx series IEDs current measurements. - PRI o Primary current, the current which flows in the primary circuit and through primary side of the current transformer.
  • Page 41 Instuction manual – AQ F205 Feeder protection IED 41 (404 Normally the primary current ratings for phase current transformers are 10A, 12.5A, 15A, 20A, 25A, 30A, 40A, 50A, 60A and 75A and their decimal multiples, while normal secondary current ratings are 1 and 5A. For AQ-2xx series devices also other, non-standard ratings can be directly connected since the scaling settings are flexible in large ranges.
  • Page 42 Instuction manual – AQ F205 Feeder protection IED 42 (404 For the scaling of the currents to per unit values for the protections now needs to be made selection if the protected object nominal current or the CT primary value should be the base for per unitizing.
  • Page 43 Instuction manual – AQ F205 Feeder protection IED 43 (404 Figure 4.1.1.1-4 Phase current transformer scalings to protected object nominal current. When the scaling is made to the protected object nominal current, the object nominal current needs also to be set into the “Nominal current In” input. Now can be seen the differences in the used scaling factors.
  • Page 44 Instuction manual – AQ F205 Feeder protection IED 44 (404 Figure 4.1.1.1-6 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 4.1.1.1-7 Scalings to CT nominal.
  • Page 45 Instuction manual – AQ F205 Feeder protection IED 45 (404 CT:s, if possible check the actual ratings from the CT:s as well, since in some cases the actual CT:s may have been changed from the original plan for some reason.
  • Page 46 Instuction manual – AQ F205 Feeder protection IED 46 (404 Phase L2 (B) polarity incorrect. Measurements: Phase currents Sequence currents IL1: 1.00 xIn / 0.00 deg I1: 0.33 xIn / 0.00 deg IL2: 1.00 xIn / 60.00 deg I2: 0.67 xIn / -60.00 deg IL3: 1.00 xIn / 120.00 deg...
  • Page 47 Instuction manual – AQ F205 Feeder protection IED 47 (404 Phase L2 (B) and L3 (C) switch place (network rotation wrong). Measurements: Phase currents Sequence currents IL1: 1.00 xIn / 0.00 deg I1: 0.00 xIn / 0.00 deg IL2: 1.00 xIn / 120.00 deg I2: 1.00 xIn / 0.00 deg...
  • Page 48 Instuction manual – AQ F205 Feeder protection IED 48 (404 is from connector 3 to connector 4 and the secondary currents starpoint is towards line. IL3 Polarity IL3 (third current) measurement channel 1:Invert polarity (direction) selection. Default setting is that positive current flow is from...
  • Page 49 Instuction manual – AQ F205 Feeder protection IED 49 (404 Table 4.1.1.4-8 Per unit phase current measurements in AQ-2xx. Name Range Step Description Phase current ILx 0.00…1250.0 xIn 0.01xIn Per unit measurement from each phase current channel fundamental frequency RMS current.
  • Page 50 Instuction manual – AQ F205 Feeder protection IED 50 (404 Peak to peak current I01 0.00…500.0 xIn 0.01xIn Per unit measurement peak to peak current from I01 residual current measurement channel. Peak to peak current I02 0.00…500.0 xIn 0.01xIn Per unit measurement peak to peak current from I02 residual current measurement channel.
  • Page 51 Instuction manual – AQ F205 Feeder protection IED 51 (404 Table 4.1.1.4-16 Per unit sequence current measurements in AQ-2xx. Name Range Step Description Positive sequence 0.00…1250.0 xIn 0.01xIn Per unit measurement from calculated current positive sequence current Negative sequence 0.00…1250.0 xIn 0.01xIn...
  • Page 52 Instuction manual – AQ F205 Feeder protection IED 52 (404 I02 Harmonics 0.00…1000000.0A 0.01A Per unit, primary and secondary I02 fund…I02 31harm harmonics per component for current input I02...

  • Page 53: Voltage Measurement And Scaling

    Instuction manual – AQ F205 Feeder protection IED 53 (404 4.1.2 V OLTAGE MEASUREMENT AND SCALING In AQ-2xx series voltage measurement module (VT-module) is used for measuring the voltages from voltage transformers and processing the measured voltages to measurement database and for use of measurement- and protection functions. For the measurements to be correct it is essential to understand the concept of the AQ-2xx series IEDs voltage measurements.
  • Page 54 Instuction manual – AQ F205 Feeder protection IED 54 (404 4.1.2.1 VT SCALING EXAMPLE The connection of VTs to the IED measurement inputs and the ratings of the voltage transformers are as in following figure. In figure below line to neutral voltages are connected among with zero sequence voltage.
  • Page 55 Instuction manual – AQ F205 Feeder protection IED 55 (404 overvoltage stage equals to 24000V on primary level so 20% increase in this case would be 4000V. Figure 4.1.2.1-11 Voltage may be based on line to line voltage or line to neutral voltage.
  • Page 56 Instuction manual – AQ F205 Feeder protection IED 56 (404 There are several different ways to use all four voltage channels. Most common voltage measurement mode is the three from line to neutral voltages and measured zero sequence voltage 3LN+U0. For further information see different voltage measurement mode...
  • Page 57 Instuction manual – AQ F205 Feeder protection IED 57 (404 Figure 4.1.2.1-14 Two line to line measurements with zero sequence voltage and voltage from side 2 for Synchro-check 2LL+U0+SS. Line to neutral voltages can be calculated since U0 is available.
  • Page 58 Instuction manual – AQ F205 Feeder protection IED 58 (404 Figure 4.1.2.1-16 Voltage injection during earth fault to the IED by using secondary test equipment. Voltage transformer scaling is set to 20000:100 V. Voltage measurement mode is 3LN+U4 and U4 channel is measuring zero sequence voltage which has same ratio 20000:100 V.
  • Page 59 Instuction manual – AQ F205 Feeder protection IED 59 (404 4.1.2.3 S ETTINGS Table 4.1.2.3-22 Settings of the VT scaling in AQ-2xx. Name Range Step Default Description Voltage meas mode 0:3LN+U4 0:3LN+U4 Voltage wiring method to the IED. 1:3LL+U4 Voltages are scaled according the set 2:2LL+U3+U4 voltage measurement mode.
  • Page 60 Instuction manual – AQ F205 Feeder protection IED 60 (404 VT scaling factor P/S IED feedback value, this is the calculated scaling factor for primary /secondary voltage ratio VT scaling factor p.u. IED feedback value, scaling factor from p.u. value to primary voltage.
  • Page 61 Instuction manual – AQ F205 Feeder protection IED 61 (404 Table 4.1.2.4-25 Voltage phase angle measurements in AQ-2xx. Name Range Step Description Ux Angle 0.00…360.00 deg 0.01deg Phase angle measurement of the four voltage inputs. Table 4.1.2.4-26 Per unit sequence voltage measurements in AQ-2xx.
  • Page 62 Instuction manual – AQ F205 Feeder protection IED 62 (404 Table 4.1.2.4-30 Primary voltage measurements in AQ-2xx. Name Range Step Description System volt UL12 mag 0.00…1000000.00V 0.01V Primary measured or calculated fundamental frequency RMS line to line UL12 voltage. System volt UL23 mag 0.00…1000000.00V...
  • Page 63 Instuction manual – AQ F205 Feeder protection IED 63 (404 Table 4.1.2.4-32 Harmonic voltage measurements in AQ-2xx. Name Range Step Description U1 Harmonics 0.00…100000.0V 0.01V Selectable per unit, primary and U1 fund…U1 31harm secondary harmonics per component for voltage input U1 U2 Harmonics 0.00…100000.0V...

  • Page 64: Frequency Tracking And Sampling

    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.
  • Page 65 For this reason the magnitude and angle measurements need to be calibrated against frequency. For this purpose measured channels FFT result fundamental frequency component is corrected for magnitude and angle errors by Arcteq AQ-2xx series patented calibration algorithms. 4.1.3.1 T ROUBLESHOOTING It is possible that for some reason the measured currents may not be as expected.
  • Page 66 Instuction manual – AQ F205 Feeder protection IED 66 (404 Freq tracker quality 0:No trackable Frequency tracker quality. If the current or channels voltage measured amplitude is below the 1:Reference 1 threshold channel tracking quality is 0 and Trackable cannot be used for frequency tracking. If...

  • Page 67: Power And Energy Calculation

    Instuction manual – AQ F205 Feeder protection IED 67 (404 4.1.4 P OWER AND ENERGY CALCULATION AQ-2xx series IEDs with both voltage –and current cards can calculate power and have power based protection functions. When power calculation is possible also the energy magnitudes are calculated.
  • Page 68 Instuction manual – AQ F205 Feeder protection IED 68 (404 Below is presented formula for three phase reactive power (Q) calculation: × I sin φ Where, × I sin φ UL1…UL3 = Line to neutral voltage × I sin φ...
  • Page 69 Instuction manual – AQ F205 Feeder protection IED 69 (404 NLY LINE TO LINE VOLTAGES AVAILABLE In case the line to line voltages are measured and zero sequence voltage is not measured and known the three phase power calculation is based on Aaron’s theorem: S = U ×...
  • Page 70 Instuction manual – AQ F205 Feeder protection IED 70 (404 Table 4.1.4.2-35 Energy Dose Counter 1 settings in AQ-2xx. Name Range Step Default Description Energy dose 0:Disabled 0:Disabled Enable energy dose counters counter mode 1:Activated generally. DC 1…4 enable 0:Disabled...
  • Page 71 Instuction manual – AQ F205 Feeder protection IED 71 (404 Table 4.1.4.3-39 Phase L1 power calculation in AQ-2xx. Name Range Step Description L2 Apparent power (S) -1x10 …1x10 0.01kVA Phase L1 apparent power L2 Active power (P) -1x10 …1x10 0.01kW...
  • Page 72 Instuction manual – AQ F205 Feeder protection IED 72 (404 Table 4.1.4.4-42 Phase L1 energy calculation in AQ-2xx. Name Range Step Description L1 Exp.Active Energy Mwh -1x10 …1x10 0.01MWh Phase L1 exported active energy L1 Imp.Active Energy Mwh -1x10 …1x10 0.01MWh...
  • Page 73 Instuction manual – AQ F205 Feeder protection IED 73 (404 Table 4.1.4.4-44 Phase L3 energy calculation in AQ-2xx. Name Range Step Description L3 Exp.Active Energy Mwh -1x10 …1x10 0.01MWh Phase L3 exported active energy L3 Imp.Active Energy Mwh -1x10 …1x10 0.01MWh...
  • Page 74 Instuction manual – AQ F205 Feeder protection IED 74 (404 Name Name Name Name L1 (S) 4.08 L2 (S) 6.15 L3 (S) 9.77 3PH (S) 20.00 L1 (P) 2.89 L2 (P) 4.72 L3 (P) 9.71 3PH (P) 17.32 L1 (Q) 2.89...

  • Page 75: Protection Functions

    Instruction manual –AQ F205 Feeder Protection IED 75 (404 4.2 P ROTECTION FUNCTIONS 4.2.1 G ENERAL PROPERTIES OF A PROTECTION FUNCTION In following flowchart is described the basic structure of any protection function. Basic structure is composed of the analog measurement values comparison to the pick-up values...
  • Page 76 Instruction manual –AQ F205 Feeder Protection Relay 76 (404 Protection function is run in a completely digital environment with protection CPU microprocessor which also processes the analog signals transferred to digital form. Figure 4.2.1-18 Principle diagram of AQ-2xx protection relay platform.
  • Page 77 Instruction manual –AQ F205 Feeder Protection Relay 77 (404 Figure 4.2.1.1-19 Pick up and reset characteristics of the function. 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.
  • Page 78 Instruction manual –AQ F205 Feeder Protection Relay 78 (404 secondary currents from 0.001A up to 250A. To this relation the pick-up setting in secondary amperes will vary. 4.2.1.2 F UNCTION BLOCKING In the blocking element the block signal is checked in the beginning of each program cycle.
  • Page 79 Instruction manual –AQ F205 Feeder Protection Relay 79 (404 Table 4.2.1.3-45 Operating time characteristics setting parameters (general). Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 80 Instruction manual –AQ F205 Feeder Protection Relay 80 (404 Figure 4.2.1.3-21. Definite time operating characteristics.
  • Page 81 Instruction manual –AQ F205 Feeder Protection Relay 81 (404 Figure 4.2.1.3-22. IEC predefined characteristics NI, VI, LTI and EI...
  • Page 82 Instruction manual –AQ F205 Feeder Protection Relay 82 (404 Figure 4.2.1.3-23. IEEE predefined characteristics VI, STI, STEI and RI...
  • Page 83 Instruction manual –AQ F205 Feeder Protection Relay 83 (404 Figure 4.2.1.3-24. IEEE predefined characteristics MI, LTVI, LTI and LTEI...
  • Page 84 Instruction manual –AQ F205 Feeder Protection Relay 84 (404 Figure 4.2.1.3-25. Parameters A, B and C effect to the characteristics.
  • Page 85 Instruction manual –AQ F205 Feeder Protection Relay 85 (404 Table 4.2.1.3-46 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 86 Instruction manual –AQ F205 Feeder Protection Relay 86 (404 Figure 4.2.1.3-27. Delayed pick-up release, delay counter is reset at signal drop-off. Figure 4.2.1.3-28. Delayed pick-up release, delay counter value is held during the release time.
  • Page 87 Instruction manual –AQ F205 Feeder Protection Relay 87 (404 Figure 4.2.1.3-29. 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.

  • Page 88: Non-Directional Over Current I> (50/51)

    Instruction manual –AQ F205 Feeder Protection Relay 88 (404 4.2.2 N I> (50/51) DIRECTIONAL OVER CURRENT Overcurrent function (NOC) is used for non-directional instant- and time delayed overcurrent/short circuit protection for various applications including feeder, filter and machine applications of utilities and industry. The number of available instances of the function depends of the IED model.
  • Page 89 Instruction manual –AQ F205 Feeder Protection Relay 89 (404 Figure 4.2.2-30 Simplified function block diagram of the NOC function. 4.2.2.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function block always utilizes peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 90 Instruction manual –AQ F205 Feeder Protection Relay 90 (404 4.2.2.2 P UP CHARACTERISTICS Iset Pick-up of the NOC function is controlled by setting parameter, which defines the maximum allowed measured current before action from the function. The function constantly calculates the ratio in between of the Iset and measured magnitude (Im) per all Iset three phases.
  • Page 91 Instruction manual –AQ F205 Feeder Protection Relay 91 (404 4.2.2.4 O PERATING TIME CHARACTERISTICS FOR TRIP AND RESET The operating timers’ behavior of the function can be set for trip signal and also for the release of the function in case the pick-up element is reset before the trip time has been reached.
  • Page 92 Instruction manual –AQ F205 Feeder Protection Relay 92 (404 Table 4.2.2.4-49 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 93 Instruction manual –AQ F205 Feeder Protection Relay 93 (404 Table 4.2.2.4-50 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 94 Instruction manual –AQ F205 Feeder Protection Relay 94 (404 Table 4.2.2.5-51. Event codes of the NOC function instances 1 – 4. Event Event Event Event Number channel Event block name Code Description Type 1280 20 NOC1 0 Start ON 1281...

  • Page 95: Non-Directional Earth Fault I0> (50N/51N)

    Instruction manual –AQ F205 Feeder Protection Relay 95 (404 4.2.3 N I0> (50N/51N) DIRECTIONAL EARTH FAULT Non directional earth fault function (NEF) is used for instant- and time delayed earth fault protection for various applications including feeder, filter and machine applications of utilities and industry.
  • Page 96 Instruction manual –AQ F205 Feeder Protection Relay 96 (404 Figure 4.2.3-31 Simplified function block diagram of the NEF function. 4.2.3.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function block always utilizes peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 97 Instruction manual –AQ F205 Feeder Protection Relay 97 (404 4.2.3.2 P UP CHARACTERISTICS I0set Pick-up of the NEF function is controlled by setting parameter, which defines the maximum allowed measured current before action from the function. The function constantly calculates the ratio in between of the Iset and measured magnitude (Im) per all Iset three phases.
  • Page 98 Instruction manual –AQ F205 Feeder Protection Relay 98 (404 4.2.3.4 O PERATING TIME CHARACTERISTICS FOR TRIP AND RESET The operating timers’ behavior of the function can be set for trip signal and also for the release of the function in case the pick-up element is reset before the trip time has been reached.
  • Page 99 Instruction manual –AQ F205 Feeder Protection Relay 99 (404 Table 4.2.3.4-55 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 100 Instruction manual –AQ F205 Feeder Protection Relay 100 (404 Table 4.2.3.4-56 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.

  • Page 101: Directional Over Current Idir> (67)

    Instruction manual –AQ F205 Feeder Protection Relay 101 (404 Table 4.2.3.5-57. Event codes of the NEF-function instances 1 – 4. Event Event Event Event Number channel Event block name Code Description Type 1664 26 NEF1 0 Start ON 1665 26 NEF1...
  • Page 102 Instruction manual –AQ F205 Feeder Protection Relay 102 (404 based. Monitored phase current magnitudes can be selected fundamental component RMS, TRMS values (including harmonics up to 31 ) or peak-to-peak values. Blocking signal and setting group selection controls the operating characteristics of the function during normal operation.
  • Page 103 Instruction manual –AQ F205 Feeder Protection Relay 103 (404 Figure 4.2.4-32 Simplified function block diagram of the DOC function. 4.2.4.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function block always utilizes peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 104 Instruction manual –AQ F205 Feeder Protection Relay 104 (404 Table 4.2.4.1-59 Analogic magnitudes used by the DOC function. Signal Description Time base IL1PP Peak-to-peak measurement of phase L1/A current 5 ms IL2PP Peak-to-peak measurement of phase L2/B current 5 ms...
  • Page 105 Instruction manual –AQ F205 Feeder Protection Relay 105 (404 Table 4.2.4.2-60 Pick-up characteristics setting Name Description Range Step Default Iset Pick-up setting 0.10 … 40.00 x In 0.01 x In 1.20 x In Angle Pick-up area ±45.0…90.0° 0.1° ±88° The pick-up activation of the function is not directly equal to start-signal generation of the function.
  • Page 106 Instruction manual –AQ F205 Feeder Protection Relay 106 (404 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.
  • Page 107 Instruction manual –AQ F205 Feeder Protection Relay 107 (404 Table 4.2.4.4-61 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 108 Instruction manual –AQ F205 Feeder Protection Relay 108 (404 Table 4.2.4.4-62 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 109 Instruction manual –AQ F205 Feeder Protection Relay 109 (404 Table 4.2.4.5-63. Event codes of the DOC function instances 1 – 4. Event Event Event Event Alarm Number channel Event block name Code Description Type Type 4800 75 DOC1 0 Start ON...

  • Page 110: Directional Earth Fault I0Dir> (67N)

    Instruction manual –AQ F205 Feeder Protection Relay 110 (404 4.2.5 D > (67N) IRECTIONAL EARTH FAULT Directional earth fault function (DEF) is used for instant- and time delayed earth fault protection for various applications including feeder and machine applications of utilities and industry.
  • Page 111 Instruction manual –AQ F205 Feeder Protection Relay 111 (404 Figure 4.2.5-34 Simplified function block diagram of the DEF function. 4.2.5.1 EASURED INPUT VALUES Function block uses analog current measurement values. Function block always utilizes peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 112 Instruction manual –AQ F205 Feeder Protection Relay 112 (404 Table 4.2.5.1-65 Analogic magnitudes used by the DEF function. Signal Description Time base I01PP Peak-to-peak measurement of coarse residual current 5 ms measurement input I01 I01RMS Fundamental RMS measurement of coarse residual current...
  • Page 113 Instruction manual –AQ F205 Feeder Protection Relay 113 (404 Table 4.2.5.2-66 Pick-up characteristics setting Name Description Range Step Default I0set Pick-up setting 0.01 … 40.00 x In 0.001 x In 1.20 x In U0set Pick-up setting 10…60 %Un 0.01 (%Un)
  • Page 114 Instruction manual –AQ F205 Feeder Protection Relay 114 (404 Amplitude of fault current depends of the capacitance of the network. The sources of capacitive currents are the outgoing feeders. The bigger the network the greater the capacitive current during fault is. Each outgoing feeder produces capacitance according the zero sequence capacitive reactance of the line (ohms per kilometer).
  • Page 115 Instruction manual –AQ F205 Feeder Protection Relay 115 (404 compensated when k-factor is greater than one and under compensated if the factor is smaller than one. Inductance connected to the star point of incoming transformer or like in most cases to grounding transformer compensates the capacitance of the network but due this the capacitive fault current cannot be measured anymore.
  • Page 116 Instruction manual –AQ F205 Feeder Protection Relay 116 (404 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.
  • Page 117 Instruction manual –AQ F205 Feeder Protection Relay 117 (404 Table 4.2.5.4-67 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 118 Instruction manual –AQ F205 Feeder Protection Relay 118 (404 Table 4.2.5.4-68 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 119 Instruction manual –AQ F205 Feeder Protection Relay 119 (404 Table 4.2.5.5-69. Event codes of the DEF-function instances 1 – 4. Event Event Event Event Alarm Number channel Event block name Code Description Type Type 5184 81 DEF1 0 Start ON...

  • Page 120: Current Unbalance I2> (46)

    Instruction manual –AQ F205 Feeder Protection Relay 120 (404 4.2.6 C I2> (46) URRENT UNBALANCE Current unbalance function (CUB) is used for instant- and time delayed unbalanced network protection and detection of broken conductor for various applications including feeder, filter and machine applications of utilities and industry.
  • Page 121 Instruction manual –AQ F205 Feeder Protection Relay 121 (404 Figure 4.2.6-38 Simplified function block diagram of the CUB function. 4.2.6.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function block utilizes calculated positive and negative sequence currents. In broken conductor mode (I2/I1) also the phase currents RMS value is used for the minimum current check.
  • Page 122 Instruction manual –AQ F205 Feeder Protection Relay 122 (404 4.2.6.2 P UP CHARACTERISTICS I2set or I2/I1set Pick-up of the CUB function is controlled by setting parameters, which define the maximum allowed measured negative sequence current or negative/positive sequence current ratio before action from the function. The function constantly calculates the ratio in between of the Iset and measured magnitude (Im).
  • Page 123 Instruction manual –AQ F205 Feeder Protection Relay 123 (404 4.2.6.4 O PERATING TIME CHARACTERISTICS FOR TRIP AND RESET The operating timers’ behavior of the function can be set for trip signal and also for the release of the function in case the pick-up element is reset before the trip time has been reached.
  • Page 124 Instruction manual –AQ F205 Feeder Protection Relay 124 (404 Table 4.2.6.4-73 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 125 Instruction manual –AQ F205 Feeder Protection Relay 125 (404 Table 4.2.6.4-74 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 126 Instruction manual –AQ F205 Feeder Protection Relay 126 (404 Table 4.2.6.5-75. Event codes of the CUB-function instances 1 – 4. Event Event Event Event Number channel Event block name Code Description Type 2048 32 CUB1 0 Start ON 2049 32 CUB1...

  • Page 127: Harmonic Over Current Ih> (50H/51H/68H)

    Instruction manual –AQ F205 Feeder Protection Relay 127 (404 4.2.7 H IH> (50H/51H/68H) ARMONIC OVER CURRENT Harmonic overcurrent function (HOC) is used for non-directional instant- and time delayed harmonic overcurrent detection and clearing for various applications including feeder, filter and machine applications of utilities and industry. The number of available instances of the function depends of the IED model.
  • Page 128 Instruction manual –AQ F205 Feeder Protection Relay 128 (404 Figure 4.2.7-39 Simplified function block diagram of the HOC function. 4.2.7.1 M EASURED INPUT VALUES Function block uses analog current measurement values from the phase currents or residual currents. For each measurement input the HOC function block utilizes the...
  • Page 129 Instruction manual –AQ F205 Feeder Protection Relay 129 (404 Table 4.2.7.1-77 Analogic magnitudes used by the HOC function. Signal Description Time base IL1FFT Magnitudes (rms) of phase L1/A current components: 5 ms Fundamental, 2 harmonic, 3 harmonic, 4 harmonic, 5...
  • Page 130 Instruction manual –AQ F205 Feeder Protection Relay 130 (404 Table 4.2.7.2-78 Operating mode selection settings of the HOC function Name Range Step Default Description Harmonic harmonic harmonic Selection of the monitored harmonic selection harmonic component harmonic harmonic harmonic harmonic harmonic...
  • Page 131 Instruction manual –AQ F205 Feeder Protection Relay 131 (404 4.2.7.4 F UNCTION BLOCKING In the blocking element the block signal is checked in the beginning of each program cycle. Blocking signal is received from the blocking matrix for the function dedicated input. 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.
  • Page 132 Instruction manual –AQ F205 Feeder Protection Relay 132 (404 Table 4.2.7.5-80 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 133 Instruction manual –AQ F205 Feeder Protection Relay 133 (404 Table 4.2.7.5-81 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 134 Instruction manual –AQ F205 Feeder Protection Relay 134 (404 Table 4.2.7.6-82. Event codes of the HOC function instances 1 – 4. Event Event Event Event Number channel Event block name Code Description Type 2368 37 HOC1 0 Start ON 2369...

  • Page 135: Circuit Breaker Failure Protection (Cbfp) (50Bf)

    Instruction manual –AQ F205 Feeder Protection Relay 135 (404 4.2.8 C (CBFP) (50BF) IRCUIT BREAKER FAILURE PROTECTION Circuit breaker failure protection (CBFP) function is used for monitoring the circuit breaker operation after it has been tripped. CBFP function can be used for Retrip to the failing breaker and if the Retrip fails the upstream breaker can be tripped by using CBFP output.
  • Page 136 Instruction manual –AQ F205 Feeder Protection Relay 136 (404 Figure 4.2.8-40 Simplified function block diagram of the CBFP function. 4.2.8.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function uses always the fundamental frequency magnitude of the current measurement input. For residual current measurement I01, I02 or calculated I0 can be selected.
  • Page 137 Instruction manual –AQ F205 Feeder Protection Relay 137 (404 Table 4.2.8.1-85 Operating mode and input signals selection Name Range Step Default Description I0Input Selection of the residual current monitoring from the two separate residual I0Calc measurements I01 and I02 or from phase currents calculated residual current.
  • Page 138 Instruction manual –AQ F205 Feeder Protection Relay 138 (404 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.
  • Page 139 Instruction manual –AQ F205 Feeder Protection Relay 139 (404 Figure 4.2.8.4-41 Into the IED is configured Trip, Retrip and CBFP. In application where the circuit breaker has retrip / redundant trip coil available, retrip functionality can be used. The trip signal is wired normally to the trip coil of the breaker from the trip output of the IED.
  • Page 140 Instruction manual –AQ F205 Feeder Protection Relay 140 (404 Figure 4.2.8.4-42 Retrip and CBFP when selected criteria is current only. In case when the current based protection activates so that either Iset and/or I0Sset current threshold setting is exceeded the counters for retrip and CBFP start to calculate the set operating time.
  • Page 141 Instruction manual –AQ F205 Feeder Protection Relay 141 (404 the monitored output contact is controlled (primary protection operates). From the tripping signal of the primary protection stage the counters for retrip and CBFP start to calculate the set operating time. The tripping of the primary protection stage is constantly monitored...
  • Page 142 Instruction manual –AQ F205 Feeder Protection Relay 142 (404 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. Figure 4.2.8.4-45 Into the IED is configured Trip and CBFP.
  • Page 143 Instruction manual –AQ F205 Feeder Protection Relay 143 (404 Figure 4.2.8.4-46 CBFP when selected criteria is current only. In case when the current based protection activates so that either Iset and/or I0Sset current threshold setting is exceeded, the counter for CBFP start to calculate the set operating time.
  • Page 144 Instruction manual –AQ F205 Feeder Protection Relay 144 (404 In case when the current based protection activates so that either Iset and/or I0Sset current threshold setting are exceeded the counter for CBFP is halted until the monitored output contact is controlled (primary protection operates). From the tripping signal of the primary protection stage the counter for CBFP start to calculate the set operating time.
  • Page 145 Instruction manual –AQ F205 Feeder Protection Relay 145 (404 Figure 4.2.8.4-49 IED is configured as dedicated CBFP unit. In some applications dedicated circuit breaker protection unit is required. When the CBFP function is configured to operate with DI signal it can be used in these applications. When the IED is used for this purpose the tripping signal is wired to the IED digital input and the IED:s own trip signal is used for CBFP purpose only.
  • Page 146 Instruction manual –AQ F205 Feeder Protection Relay 146 (404 Figure 4.2.8.4-50 Dedicated CBFP operation from binary input signal. In this mode the CBFP operates from binary input signal only. Additionally can be used also current and output relay monitoring. The counter for the CBFP is started when the digital input is activated.
  • Page 147 Instruction manual –AQ F205 Feeder Protection Relay 147 (404 Table 4.2.8.5-88. Event codes of the CBFP function instance Event Event Event Event Number channel Event block name Code Description Type 2817 44 CBF1 1 Start ON 2818 44 CBF1 2 Start OFF...

  • Page 148: Restricted Earth Fault / Cable End Differential (Ref) I0D> (87N)

    Instruction manual –AQ F205 Feeder Protection Relay 148 (404 4.2.9 R (REF) I0D> (87N) ESTRICTED EARTH FAULT CABLE END DIFFERENTIAL Restricted Earth Fault function (REF) is used for residual differential current measurement for transformers and also this function can be used for Cable End Differential (CED) functionality.
  • Page 149 Instruction manual –AQ F205 Feeder Protection Relay 149 (404 Figure 4.2.9-51 Simplified function block diagram of the REF function. 4.2.9.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function uses the fundamental frequency magnitude of the current measurement inputs and calculated residual current with residual current measurement.
  • Page 150 Instruction manual –AQ F205 Feeder Protection Relay 150 (404 Table 4.2.9.1-91 General settings of the REF stage (not SG selectable) Name Range Step Default Description I0d> mode 0: Disabled Disabled Selection of the function is activated or 1: Activated disabled in the configuration. Default setting 0: Disabled (Not in use).
  • Page 151 Instruction manual –AQ F205 Feeder Protection Relay 151 (404 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 figure is presented the differential characteristics with default settings.
  • Page 152 Instruction manual –AQ F205 Feeder Protection Relay 152 (404 Characteristics settings are calculated as follows: Diff Bias<TP1 0d>Pick-up = SL1 × ( TP2-TP1 ) + I Diff Bias TP1…TP2 0d>Pick-up = SL2 × ( Ix-TP2 ) + SL1 × ( TP2-TP1 ) + I Diff Bias>TP2...
  • Page 153 Instruction manual –AQ F205 Feeder Protection Relay 153 (404 Characteristics Differential characteristics DIFF 2.00 1.00 0.00 I Bias Figure 4.2.9.3-53 Cable end differential with natural unbalance in the phase current measurement. When calculating the residual current from phase currents the natural unbalance may be in total around 10% and still the used CT:s are in the promised 5P class (probably most common CT accuracy class).
  • Page 154 Instruction manual –AQ F205 Feeder Protection Relay 154 (404 earth faults. For this purpose restricted earth fault function is stabile since it monitors only the side it is wired to and compares the calculated and measured residual currents. In case...
  • Page 155 Instruction manual –AQ F205 Feeder Protection Relay 155 (404 4.2.9.4 E VENTS AND REGISTERS The REF function generates events and registers from the status changes of the Trip activated and blocked signals. To main event buffer is possible to select status “On” or “Off”...

  • Page 156: Thermal Overload Protection For Feeders T > (49F)

    Instruction manual –AQ F205 Feeder Protection Relay 156 (404 4.2.10 T > (49F) HERMAL OVERLOAD PROTECTION FOR FEEDERS Thermal overload function for feeder (TOLF) is used for cables and overhead lines thermal capacity monitoring and protection. Also this function can be used for any single time constant application like inductor chokes, certain types of transformers and any other static units which don’t have active cooling in addition to the cables and overhead lines.
  • Page 157 Instruction manual –AQ F205 Feeder Protection Relay 157 (404 its heating constant tau (), 63% of the nominal thermal capacity is used. When the loading continues until five times this given constant the used thermal capacity indefinitely approaches to 100% but never exceeds it. With a single time constant model cooling of the object follows this same behavior reversible to the heating when the current feeding is completely zero.
  • Page 158 Instruction manual –AQ F205 Feeder Protection Relay 158 (404 temperature. The calculated coefficient is linear correction factor which is presented with following formulas: Amb<t × ( t ) ) + k Amb<t × ( t ) ) + 1.0 Amb>t Amb>t...
  • Page 159 Instruction manual –AQ F205 Feeder Protection Relay 159 (404 This mentioned ambient temperature coefficient relates to nominal temperature reference. By default is used +15 C (ground dug cables) which gives coefficient value of 1.00 for the thermal replica. Settable thermal capacity curve uses linear interpolation for ambient temperature correction with maximum 10 pairs of temperature –...
  • Page 160 Instruction manual –AQ F205 Feeder Protection Relay 160 (404 The correction coefficient curve for ambient temperature is shown in the figure. The reference temperature for ground dug cables usually is 15 ̊ C which gives correction coefficient of 1.00 which...
  • Page 161 Instruction manual –AQ F205 Feeder Protection Relay 161 (404 Figure 4.2.10-62 Initial data of the cable temperature characteristics and current ratings with different installations and copper or aluminium conductors. Based into the given data can be seen the currents which in given installation and construction methods will achieve the given temperature in given standard conditions.
  • Page 162 Instruction manual –AQ F205 Feeder Protection Relay 162 (404 Figure 4.2.10-63 General presumptions of the high voltage cables. 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...
  • Page 163 Instruction manual –AQ F205 Feeder Protection Relay 163 (404 Figure 4.2.10-64 Correction coefficients for the current carrying capacity given by the manufacturer (Prysmian). 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.
  • Page 164 Instruction manual –AQ F205 Feeder Protection Relay 164 (404 Initial data for the set-up of the thermal image: 500 mm cross sectional 66 kV copper cable is installed into ground. Its 1s permissible short circuit current is 71.4 kA and its insulation is XLPE. The cables screen circuit is open and the laying of the cable is flat.
  • Page 165 Instruction manual –AQ F205 Feeder Protection Relay 165 (404 With maximum allowed load the end temperature 89 ̊ C has been reached with thermal capacity 99.6% used. From this result can be noted that thermal image matches perfectly into the expectations.
  • Page 166 Instruction manual –AQ F205 Feeder Protection Relay 166 (404 so the settings would be then In = 680 A, Tmax = 90 ̊ C , Tamb = 15 ̊ C , Tref = 15 ̊ C and = 0.81 Now when trying to load the...
  • Page 167 Instruction manual –AQ F205 Feeder Protection Relay 167 (404 4.2.10.1 T HERMAL OVERLOAD FUNCTION Blocking signal and setting group selection controls the operating characteristics of the function during normal operation. Outputs of the function are TOLF 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.
  • Page 168 Instruction manual –AQ F205 Feeder Protection Relay 168 (404 4.2.10.2 EASURED INPUT VALUE Function block uses analog current measurement values. Function uses the fundamental frequency magnitude of the current measurement inputs and calculated residual current with residual current measurement. For residual current measurement I01 or I02 can be selected.
  • Page 169 Instruction manual –AQ F205 Feeder Protection Relay 169 (404 Max. OC. time (norm 1s) 0.1…5 s 0.1 s 1.0 s Time of the maximum rated short circuit current (usually 1 second) of the protected object. Setting is visible if Set or estimate tau setting is selected to “Estimate”.
  • Page 170 Instruction manual –AQ F205 Feeder Protection Relay 170 (404 Table 4.2.10.2-98 Environmental settings Name Range Step Default Description Object max temp (tmax = 0…500 deg 1 deg Maximum allowed temperature for 100%) the protected object. Default setting is +90 degrees and it suits for...
  • Page 171 Instruction manual –AQ F205 Feeder Protection Relay 171 (404 setting. Setting is visible if Ambient lin. or curve is set to “Linear est.” Amb.Temp.ref1...10 -50.0…500.0 0.1 deg 15 deg Temperature reference points for the user settable ambient temperature coefficient curve.
  • Page 172 Instruction manual –AQ F205 Feeder Protection Relay 172 (404 time. Default setting is 0.000s which will not give added time delay for the trip signal. The pick-up activation of the IO is direct for all other signals except TRIP signal which has also blocking check before the trip signal is generated.
  • Page 173 Instruction manual –AQ F205 Feeder Protection Relay 173 (404 xIn status “Overloading” will be shown and when measured current is over 2 xIn status “High overload” will be shown. Table 4.2.10.5-101 Measurements Name Range Description / values Currents 0: Primary A...
  • Page 174 Instruction manual –AQ F205 Feeder Protection Relay 174 (404 In the function is available 12 last registers where the triggering event of the function (Trip activated or blocked) is recorded with time stamp and process data values. Table 4.2.10.6-103. Event codes of the TOLF function instance...

  • Page 175: Over Voltage U> (59)

    Instruction manual –AQ F205 Feeder Protection Relay 175 (404 4.2.12 O U> (59) VER VOLTAGE Overvoltage function (OV) is used for instant- and time delayed overvoltage protection for various applications including feeder, filter and machine applications of utilities and industry.
  • Page 176 Instruction manual –AQ F205 Feeder Protection Relay 176 (404 Figure 4.2.12-70 Simplified function block diagram of the OV function. 4.2.12.1 M EASURED INPUT VALUES For the function block is used analog voltage measurement values. Function block utilizes always peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 177 Instruction manual –AQ F205 Feeder Protection Relay 177 (404 4.2.12.2 P UP CHARACTERISTICS Uset Pick-up of the OV function is controlled by setting parameter, which defines the maximum allowed measured voltage before action from the function. The function constantly calculates the ratio in between of the Uset and measured magnitude (Um) per all three voltages.
  • Page 178 Instruction manual –AQ F205 Feeder Protection Relay 178 (404 4.2.12.4 O PERATING TIME CHARACTERISTICS FOR TRIP AND RESET The operating timers’ behavior of the function can be set for trip signal and also for the release of the function in case the pick-up element is reset before the trip time has been reached.
  • Page 179 Instruction manual –AQ F205 Feeder Protection Relay 179 (404 Table 4-109 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 180 Instruction manual –AQ F205 Feeder Protection Relay 180 (404 Table 4-110. Event codes of the OV function instance 1 – 4. Event Event Event Event Number channel Event block name Code Description Type 5440 85 OV1 0 Start ON 5441...

  • Page 181: Under Voltage U< (27)

    Instruction manual –AQ F205 Feeder Protection Relay 181 (404 4.2.13 U U< (27) NDER VOLTAGE Undervoltage function (UV) is used for instant- and time delayed undervoltage protection for various applications including feeder, filter and machine applications of utilities and industry. Each IED with voltage protection module has four available instances of the function (U<, U<<, U<<<, U<<<<).
  • Page 182 Instruction manual –AQ F205 Feeder Protection Relay 182 (404 Figure 4.2.13-71 Simplified function block diagram of the UV function. 4.2.13.1 M EASURED INPUT VALUES Analog voltage measurement values are used for the function block. Function block utilizes always peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 183 Instruction manual –AQ F205 Feeder Protection Relay 183 (404 calculates the ratio in between of the Uset and measured magnitude (Um) per all three Uset voltages. Reset ratio of 103 % is inbuilt in the function and is always related to the value.
  • Page 184 Instruction manual –AQ F205 Feeder Protection Relay 184 (404 reached. There are three basic operating modes available for the function. Instant operation gives the trip signal with no additional time delay simultaneously with start signal. Definite time operation (DT) will give trip signal with user given time delay regardless of the measured voltage as long as the voltage is below the Uset value and thus pick-up element is active (independent time characteristics).
  • Page 185 Instruction manual –AQ F205 Feeder Protection Relay 185 (404 Table 4.2.13.4-115 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 186 Instruction manual –AQ F205 Feeder Protection Relay 186 (404 4.2.13.5 E VENTS AND REGISTERS The UV 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 UV function offers four independent instances which events are segregated for each instance operation.

  • Page 187: Sequence Voltage Protection U1>/< Or U2>/< (59P/27P/47/59N)

    Instruction manual –AQ F205 Feeder Protection Relay 187 (404 4.2.14 S U1>/< U2>/< (59P/27P/47/59N) EQUENCE VOLTAGE PROTECTION Sequence voltage function (VUB) is used for instant- and time delayed voltage protection for various feeder, machine, utility and industry applications. It is has positive- and negative sequence over- and under voltage protection built in.
  • Page 188 Instruction manual –AQ F205 Feeder Protection Relay 188 (404 See positive sequence calculation examples below. Swapped Swapped Vector 120 degrees 240 degrees divided by three Vector Swapped Swapped 120 degrees 240 degrees divided by three Earth fault in isolated network.
  • Page 189 Instruction manual –AQ F205 Feeder Protection Relay 189 (404 See negative sequence calculation examples below. Figure 4.2.14-73 Negative sequence component vector examples. Outputs of the function are Start Trip and Blocked signals. Blocking can be executed by using external block signal or by using low voltage block function integrated to the stage.
  • Page 190 Instruction manual –AQ F205 Feeder Protection Relay 190 (404 The operational logic consists of input magnitude processing, input magnitude selection, threshold comparator, block signal check, time delay characteristics and output processing. Inputs for the function are the operating mode selections, setting parameters and measured and pre-processed voltage magnitudes and binary input signals.
  • Page 191 Instruction manual –AQ F205 Feeder Protection Relay 191 (404 4.2.14.4 P UP CHARACTERISTICS Uset Pick-up of the VUB function is controlled by setting parameter, which defines the maximum or minimum allowed calculated U1 or U2 voltage before action from the function.
  • Page 192 Instruction manual –AQ F205 Feeder Protection Relay 192 (404 4.2.14.6 O PERATING TIME CHARACTERISTICS FOR TRIP AND RESET The operating timers’ behavior of the function can be set for trip signal and also for the release of the function in case the pick-up element is reset before the trip time has been reached.
  • Page 193 Instruction manual –AQ F205 Feeder Protection Relay 193 (404 Table 4.2.14.6-121 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 194 Instruction manual –AQ F205 Feeder Protection Relay 194 (404 Event Event Event Event Alarm Number channel Event block name Code Description Type Type 8320 130 VUB1 0 Start ON 8321 130 VUB1 1 Start OFF 8322 130 VUB1 2 Trip ON...

  • Page 195: Negative Sequence Over Voltage U2> (59N/47)

    Instruction manual –AQ F205 Feeder Protection Relay 195 (404 4.2.15 N U2> (59N/47) EGATIVE SEQUENCE OVER VOLTAGE Negative sequence overvoltage function (NSV) is used for instant- and time delayed voltage protection for various feeder, machine, utility and industry applications. Each IED with voltage protection module has two available instances of the function (U2>, U2>>).
  • Page 196 Instruction manual –AQ F205 Feeder Protection Relay 196 (404 See negative sequence calculation examples below. Swapped Swapped 120 degrees 240 degrees Vector divided by three Normal situation. Swapped Swapped 120 degrees 240 degrees Vector divided by three Earth fault in isolated network.
  • Page 197 Instruction manual –AQ F205 Feeder Protection Relay 197 (404 The function can be operating on instant or time delayed mode. In time delayed mode the operation can be selected for definite time or IDMT. The operational logic consists of input magnitude processing, input magnitude selection, threshold comparator, block signal check, time delay characteristics and output processing.
  • Page 198 Instruction manual –AQ F205 Feeder Protection Relay 198 (404 In fundamental frequency RMS value the pre-fault condition is presented with 20 ms averaged history value from -20 ms of Start or Trip event. 4.2.15.2 P UP CHARACTERISTICS Uset Pick-up of the NSV function is controlled by setting parameter, which defines the maximum allowed calculated U2 voltage before action from the function.
  • Page 199 Instruction manual –AQ F205 Feeder Protection Relay 199 (404 4.2.15.4 O PERATING TIME CHARACTERISTICS FOR TRIP AND RESET The operating timers’ behavior of the function can be set for trip signal and also for the release of the function in case the pick-up element is reset before the trip time has been reached.
  • Page 200 Instruction manual –AQ F205 Feeder Protection Relay 200 (404 Table 4.2.15.4-127 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 201 Instruction manual –AQ F205 Feeder Protection Relay 201 (404 Table 4.2.15.5-128. Event codes of the NSV function instance 1 – 2. Event Event Event Event Number channel Event block name Code Description Type 1280 20 NOC1 0 Start ON 1281...
  • Page 202 Instruction manual –AQ F205 Feeder Protection Relay 202 (404 U2 = 1 3 ⁄ (U + aU a = 1∠120° = 1∠240° = Line to neutral voltages L1…3 See negative sequence calculation examples below. Swapped Swapped 120 degrees 240 degrees...
  • Page 203 Instruction manual –AQ F205 Feeder Protection Relay 203 (404 Outputs of the function are Start Trip and Blocked signals. Blocking can be executed by using external block signal. Setting parameters are static inputs for the function which are changed only by user input in the setup phase of the function. Negative sequence voltage function utilizes total of eight separate setting groups which can be selected from one common source.
  • Page 204 Instruction manual –AQ F205 Feeder Protection Relay 204 (404 Table 4.2.15.6-130 Analogic magnitudes used by the NSV function. Signal Description Time base U1RMS Fundamental RMS measurement of voltage U1/V 5 ms U2RMS Fundamental RMS measurement of voltage U2/V 5 ms...
  • Page 205 Instruction manual –AQ F205 Feeder Protection Relay 205 (404 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. 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.
  • Page 206 Instruction manual –AQ F205 Feeder Protection Relay 206 (404 Table 4.2.15.9-132 Operating time characteristics setting parameters. Name Range Step Default Description Delay Type Selection of the delay type time counter. IDMT Selection possibilities are dependent (IDMT, Inverse Definite Minimum Time) and independent (DT, Definite Time) characteristics.
  • Page 207 Instruction manual –AQ F205 Feeder Protection Relay 207 (404 When using the release delay option where the operating time counter is calculating the operating time during the release time, function will not trip if the input signal is not activated again during the release time counting.
  • Page 208 Instruction manual –AQ F205 Feeder Protection Relay 208 (404 Table 4.2.15.10-135. Register content. Date & Time Event Fault Trigger Fault Prefault Trip time Used code type voltage voltage voltage remaining dd.mm.yyyy 1280- L1-G… Start Trip Start 0 ms - 1 - 8 hh:mm:ss.mss...

  • Page 209: Neutral Voltage U0> (59N)

    Instruction manual –AQ F205 Feeder Protection Relay 209 (404 4.2.16 N U0> (59N) EUTRAL VOLTAGE Neutral overvoltage function (NOV) is used for non-directional instant- and time delayed earth fault protection for various applications including feeder, filter and machine applications of utilities and industry. Each IED with voltage protection module has four available instances of the function (U0>, U0>>, U0>>>, U0>>>>).
  • Page 210 Instruction manual –AQ F205 Feeder Protection Relay 210 (404 See positive sequence calculation examples below. Vector divided by three Normal situation. Vector divided by three Earth fault in isolated network. Vector divided by three Close distance short circuit between phases 1 and 3.
  • Page 211 Instruction manual –AQ F205 Feeder Protection Relay 211 (404 100V 100V 100V 57.74V 33.33V 0° -150° 150° 180° Figure 4.2.16-80 Measured neutral voltage example. For monitored voltage magnitudes can be selected fundamental component RMS and TRMS values (including harmonics up to 31 ).
  • Page 212 Instruction manual –AQ F205 Feeder Protection Relay 212 (404 Figure 4.2.16-81 Simplified function block diagram of the NOV function. 4.2.16.1 M EASURED INPUT VALUES Function block uses the analog voltage measurement values. Function block utilizes either fundamental frequency RMS values or True RMS values from the whole harmonic specter of 32 components.
  • Page 213 Instruction manual –AQ F205 Feeder Protection Relay 213 (404 Table 4.2.16.2-137 Pick-up characteristics setting Name Description Range Step Default Uset Pick-up setting 1.00 … 100.00 % Un 0.1 V 20 % Un The pick-up activation of the function is not directly equal to start-signal generation of the function.
  • Page 214 Instruction manual –AQ F205 Feeder Protection Relay 214 (404 measured voltage Um (dependent time characteristics). For the IDMT operation is available IEC and IEEE/ANSI standard characteristics as well as user settable parameters. In the following table are presented the setting parameters for the function time characteristics.
  • Page 215 Instruction manual –AQ F205 Feeder Protection Relay 215 (404 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. When using the release delay option where the operating time counter is calculating the operating time during the release time, function will not trip if the input signal is not activated again during the release time counting.
  • Page 216 Instruction manual –AQ F205 Feeder Protection Relay 216 (404 Table 4.2.16.5-141. Register content. Date & Time Event Fault Trigger Fault Prefault Trip time Used code type voltage voltage voltage remaining dd.mm.yyyy 5952- L1-G… Start Trip Start 0 ms - 1 - 8 hh:mm:ss.mss...

  • Page 217: Over Power P> (32O)

    Instruction manual –AQ F205 Feeder Protection Relay 217 (404 4.2.17 O P> (32O) VER POWER AQ-2xx series IEDs with both voltage –and current cards can have over power function (POW), which is used for instant- and time delayed active over power protection. In applications like feeder-, generator- and motor protection it is used to detect overload situations by measuring three phase active power.
  • Page 218 Instruction manual –AQ F205 Feeder Protection Relay 218 (404 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 figure is presented the simplified function block diagram of the OPW function.
  • Page 219 Instruction manual –AQ F205 Feeder Protection Relay 219 (404 Table 4.2.17.2-143 Pick-up characteristics setting Name Description Range Step Default Pset> Pick-up setting 0.0 … 100000 kW 0.01 kV 100 kW The pick-up activation of the function is not directly equal to start-signal generation of the function.
  • Page 220 Instruction manual –AQ F205 Feeder Protection Relay 220 (404 Table 4.2.17.4-144 Operating time characteristics setting parameters. Name Range Step Default Description Definite operating 0.000…1800.000 s 0.005 s 0.040 s Definite time operating delay. When set to time delay 0.000 s the stage operates as instant (PIOC, 50) stage without added delay.

  • Page 221: Under Power P< (32U)

    Instruction manual –AQ F205 Feeder Protection Relay 221 (404 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. Table 4.2.17.5-146. Event codes of the OPW function.
  • Page 222 Instruction manual –AQ F205 Feeder Protection Relay 222 (404 Below is presented formula for three phase active power (P) calculation when line-to-neutral voltages are available: Where, × I cos φ UL1…UL3 = Line to neutral voltage × I cos φ...
  • Page 223 Instruction manual –AQ F205 Feeder Protection Relay 223 (404 Figure 4.2.18-83 Simplified function block diagram of the UPW function. 4.2.18.1 M EASURED INPUT VALUES Three phase active power value is used for the function block. -20ms averaged value is used for pre-fault data registering.
  • Page 224 Instruction manual –AQ F205 Feeder Protection Relay 224 (404 Figure 4.2.18-84 Activation and deactivation characteristics of the Under Power functions Low Power Blocking. To prevent accidental tripping before active power exceeds under powers pick-up setting, low power block-setting can be used. LPB-signal deactivates when measured active power exceeds pick-up settings reset value (1.03xPset).
  • Page 225 Instruction manual –AQ F205 Feeder Protection Relay 225 (404 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.
  • Page 226 Instruction manual –AQ F205 Feeder Protection Relay 226 (404 Table 4.2.18.4-151 Reset time characteristics setting parameters. Release Time 0.000…150.000 s 0.005 s 0.06 s Resetting time. Time allowed in between delay of pick-ups if the pick-up has not lead into trip operation.
  • Page 227 Instruction manual –AQ F205 Feeder Protection Relay 227 (404 In the register of the UPW function is recorded start, trip or blocked “On” event process data. In the table below is presented the structure of UPW function register content. This information is available in 12 last recorded events for all provided instances separately.

  • Page 228: Reverse Power Pr (32R)

    Instruction manual –AQ F205 Feeder Protection Relay 228 (404 4.2.19 R (32R) EVERSE POWER AQ-2xx series IEDs with both voltage –and current cards can have reverse power function (RPW), which is used for instant- and time delayed active reverse power protection. In...
  • Page 229 Instruction manual –AQ F205 Feeder Protection Relay 229 (404 each of the three output signal. In instant operating mode the function outputs 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.
  • Page 230 Instruction manual –AQ F205 Feeder Protection Relay 230 (404 Table 4.2.19.2-155 Pick-up characteristics setting Name Description Range Step Default Pset rev. Pick-up setting 0.0…100000 kW 0.01 kW 100 kW The pick-up activation of the function is not directly equal to start-signal generation of the function.
  • Page 231 Instruction manual –AQ F205 Feeder Protection Relay 231 (404 Table 4.2.19.4-156 Operating time characteristics setting parameters. Name Range Step Default Description Definite operating 0.000…1800.000 s 0.005 s 0.040 s Definite time operating delay. Setting is time delay active and visible when Delay Type is selected to DT.
  • Page 232 Instruction manual –AQ F205 Feeder Protection Relay 232 (404 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. Table 4.2.19.5-158. Event codes of the RPW function.

  • Page 233: Over- And Under Frequency F>/< (81O/81U)

    Instruction manual –AQ F205 Feeder Protection Relay 233 (404 4.2.20 O >/< (81O/81U) AND UNDER FREQUENCY F Frequency protection function can be used for both under frequency and over frequency situations and it has four stages for both. Frequency protection can be applied to protect feeder, bus, transformer, motor and generator applications.
  • Page 234 Instruction manual –AQ F205 Feeder Protection Relay 234 (404 is 1ms. Function provides also cumulative counters for START, TRIP and BLOCKED events. In the following figure is presented the simplified function block diagram of the FRQV function. Figure 4.2.20-86 Simplified function block diagram of the FRQV function.
  • Page 235 Instruction manual –AQ F205 Feeder Protection Relay 235 (404 4.2.20.2 P UP CHARACTERISTICS AND TIME DELAY fset>, fset>> Pick-up of each stage of FRQV functions stage is controlled by etc. setting parameter, which defines the maximum or minimum allowed measured frequency before action from the function.
  • Page 236 Instruction manual –AQ F205 Feeder Protection Relay 236 (404 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. 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.
  • Page 237 Instruction manual –AQ F205 Feeder Protection Relay 237 (404 Table 4.2.20.4-163. Event codes of the FRQV function. Event Event Event Event Alarm Number channel Event block name Code Description Type Type 6336 99 FRQV1 0 f> Start ON 6337 99 FRQV1 1 f>...

  • Page 238: Rate-Of-Change Of Frequency Protection Df/Dt (81R)

    Instruction manual –AQ F205 Feeder Protection Relay 238 (404 Table 4.2.20.4-164. Register content. Date & Time Event f Pretrig (Hz) f Fault (Hz) Setting group in code dd.mm.yyyy 6336- Start –20ms Fault frequency Starts used at the hh:mm:ss.mss 6383 averages triggering moment Descr.
  • Page 239 Instruction manual –AQ F205 Feeder Protection Relay 239 (404 In the figure above is presented an example case of df/dt function operation when the frequency is decreasing. If the f is activated df/dt doesn’t trip no matter how fast the limit measured frequency changes if it’s over the f...
  • Page 240 Instruction manual –AQ F205 Feeder Protection Relay 240 (404 Figure 4.2.21-87 Simplified function block diagram of the ROCOF function. 4.2.21.1 M EASURED INPUT VALUES Rate of change of frequency protection function compares measured df/dt to pick-up setting given in Hz/s. Source of measured frequency depends on the factory defined tracking reference which can be checked from frequency tab behind measurements-menu.
  • Page 241 Instruction manual –AQ F205 Feeder Protection Relay 241 (404 Table 4.2.21.2-166 Pick-up characteristics setting Name Description Range Step Default df/dt>/<(1…8)pick-up Pick-up setting 0.01 … 10.00 0.01Hz/s 0.2 Hz/s df/dt>/<(1…8) f< limit f< limit 7.00…65.00 0.01Hz/s 49.95 Hz/s df/dt>/<(1…8) f> limit f>...
  • Page 242 Instruction manual –AQ F205 Feeder Protection Relay 242 (404 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. 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 passed for blocking to be active in time.
  • Page 243 Instruction manual –AQ F205 Feeder Protection Relay 243 (404 Table 4.2.21.4-168. Event codes of the ROCOF function. Event Event Event Event Alarm Number channel Event block name Code Description Type Type 6592 103 DFT1 0 df/dt </> (1) Start ON...
  • Page 244 Instruction manual –AQ F205 Feeder Protection Relay 244 (404...

  • Page 245: Control Functions

    Instruction manual –AQ F205 Feeder Protection Relay 245 (404 4.3 C ONTROL FUNCTIONS 4.3.1 S (SGS) ETTING GROUP SELECTION In AQ-2xx series protection devices are eight (8) separate setting groups available which availability and selection to active is controlled by SGS function block. By default only SG1 is active and thus the selection logic is idle.
  • Page 246 Instruction manual –AQ F205 Feeder Protection Relay 246 (404 For the application controlled setting group switch and selection is available either pulse controlled change or signal level change options. In the setting group controller block is prioritized the setting groups so that if higher one is controlled simultaneously with lower priority setting group the higher request shall be taken into use.
  • Page 247 Instruction manual –AQ F205 Feeder Protection Relay 247 (404 Table 4.3.1.1-170 Settings of the SGS function. Name Range Step Default Description Used setting 0=SG1 Selection of activated setting groups in groups 1=SG1...2 the application. If setting group is enabled 2=SG1...3 it cannot be controlled to active.
  • Page 248 Instruction manual –AQ F205 Feeder Protection Relay 248 (404 Table 4.3.1.1-171. Signals of the SGS function Name Range Step Default Description Setting group 1 0=Not active Setting group 1 selection, highest priority 1=Active input for setting group control. Can be controlled with pulse or steady state signals.
  • Page 249 Instruction manual –AQ F205 Feeder Protection Relay 249 (404 4.3.1.2 E VENTS SG selection function block generates events from its controlling status and applied input signals as well as unsuccessful control changes and enabled setting groups. For this function is no register available.
  • Page 250 Instruction manual –AQ F205 Feeder Protection Relay 250 (404 4.3.1.3 E XAMPLES OF ETTING GROUP CONTROL In this chapter are presented some of most common applications for setting group changing requirements. In a Petersen coil compensated network is usually used directional sensitive earth fault...
  • Page 251 Instruction manual –AQ F205 Feeder Protection Relay 251 (404 Figure 4.3.1.3-90 Setting group control with 2 wire connection from Petersen coil status. Figure 4.3.1.3-91 Setting group control with 2 wire connection from Petersen coil status and additional logic.
  • Page 252 Instruction manual –AQ F205 Feeder Protection Relay 252 (404 Application controlled setting group change can be applied also completely from the relays internal logics. One example can be setting group change based into cold load pick up function. Figure 4.3.1.3-92 Example of fully application controlled setting group change with CLPU function.

  • Page 253: Object Control And Monitoring (Obj)

    Instruction manual –AQ F205 Feeder Protection Relay 253 (404 4.3.2 O (OBJ) BJECT CONTROL AND MONITORING Object control and monitoring function takes care of circuit breaker and disconnector controlling and status monitoring. Monitor and control is based into the statuses of the IED binary inputs and outputs configured.
  • Page 254 Instruction manual –AQ F205 Feeder Protection Relay 254 (404 Figure 4.3.2-94 Simplified function block diagram of the OBJ function. 4.3.2.1 I NPUT SIGNALS FOR OBJECT STATUS MONITORING For the function is used available hardware and software digital signal statuses and command signals.
  • Page 255 Instruction manual –AQ F205 Feeder Protection Relay 255 (404 Open Block DI1 … DIx Link to the physical or software binary input.“1” means that the opening of the Input (SWx) object is blocked. Position indication can be done among binary inputs and protection stage signals by using logical signals.
  • Page 256 Instruction manual –AQ F205 Feeder Protection Relay 256 (404 4.3.2.2 S ETTING PARAMETERS For the definition of the object following parameters are provided. Based into these settings the operation of the function will vary according to the type of the object. When Disconnector...
  • Page 257 Instruction manual –AQ F205 Feeder Protection Relay 257 (404 than this set time the control pulse will be reset in the time when the status is changed. Max Open 0.000…1800.000 s 0.02 s 0.20 s Maximum length for open pulse from the output relay pulse length to the controlled object.
  • Page 258 Instruction manual –AQ F205 Feeder Protection Relay 258 (404 4.3.2.4 E VENTS AND REGISTERS The OBJ function generates events and registers from the status changes of monitored signals as well as control command fails and operations. To main event buffer is possible to select status “On”...
  • Page 259 Instruction manual –AQ F205 Feeder Protection Relay 259 (404 3019 OBJ2 Open Request Off 3020 OBJ2 Open Command On 3021 OBJ2 Open Command Off 3022 OBJ2 Close Request On 3023 OBJ2 Close Fail 3024 OBJ2 Close Request Off 3025 OBJ2...
  • Page 260 Instruction manual –AQ F205 Feeder Protection Relay 260 (404 3151 OBJ4 Close Fail 3152 OBJ4 Close Request Off 3153 OBJ4 Close Command On 3154 OBJ4 Close Command Off 3155 OBJ4 Status Change On 3156 OBJ4 Status Change Off 3201 OBJ5...
  • Page 261 Instruction manual –AQ F205 Feeder Protection Relay 261 (404 dd.mm.yyyy hh:mm:ss.mss ObjectOpen, WDIn, Close request from RemCloInput,Close pending due to: Close wait for Ready, Open Allowed, Close Allowed, Object Not Ready dd.mm.yyyy hh:mm:ss.mss ObjectOpen,WDIn,Open Allowed,Close Allowed,ObjectReady dd.mm.yyyy hh:mm:ss.mss ObjectClosed,WDIn,Open Allowed,Close Allowed,ObjectReady,Obj closetime:0.070s...

  • Page 262: Auto-Reclosing 0  1 (79)

    Instruction manual –AQ F205 Feeder Protection Relay 262 (404 4.3.3 A 0  1 (79) RECLOSING Autoreclosing (AR) means coordinated de-energisation and energisation of transmission or distribution overhead-line with purpose to clear permanent or semi-permanent cause of fault from the line in order to restore supply automatically to the line.
  • Page 263 Instruction manual –AQ F205 Feeder Protection Relay 263 (404 If the fault was not cleared by the time autorecloser closes the breaker and second shot is applied into the line there can be set either time delay (called Arcing time) in order to burn the fault causing object from the line or normal protection operating times can be applied.
  • Page 264 Instruction manual –AQ F205 Feeder Protection Relay 264 (404 4.3.3.2 A UTORECLOSING SCHEME IN RADIAL NETWORK In typical medium voltage overhead network construction is radial type and does not cause any additional requirements for the autoreclosing scheme in addition to the mentioned air de-ionization time and the capacity of the circuit breaker which should be the dictating magnitudes for the autoreclosing scheme.
  • Page 265 Instruction manual –AQ F205 Feeder Protection Relay 265 (404 Figure 4.3.3.2-98. Autoreclosing shot settings, two requests and two shots are initialized. For earth faults in this example is used earth fault protection function own operating time settings and for overcurrent is used time delay set from autorecloser. Both fault types can init both of the shots with different settings.
  • Page 266 Instruction manual –AQ F205 Feeder Protection Relay 266 (404 4.3.3.3 A UTORECLOSING SEQUENCE FROM RIP WITH TWO SHOT FAILURE For this earth fault autoreclosing scheme was set directional earth fault protection Trip signal to operate as REQ2 starter which was enabled to Shot1 and Shot2 with following settings.
  • Page 267 Instruction manual –AQ F205 Feeder Protection Relay 267 (404 1. Earth fault is found in the protected line which causes directional earth fault protection I0Dir> to start and calculate the operating time for the trip. 2. I0Dir> trips and gives open command to the breaker open coil. Autoreclosing REQ2 is initiated and AR running, AR2 Requested and Shot1 Running signals are activated.
  • Page 268 Instruction manual –AQ F205 Feeder Protection Relay 268 (404 4.3.3.4 A UTORECLOSING SEQUENCE FROM RIP WITH TWO SHOT HIGH SPEED FAILS AND TIME DELAYED SUCCEEDS The Scheme for autoreclosing starter and shots is the same than in the previous example with same settings and signals.
  • Page 269 Instruction manual –AQ F205 Feeder Protection Relay 269 (404 1. Earth fault is found in the protected line which causes directional earth fault protection I0Dir> to start and calculate the operating time for the trip. 2. I0Dir> trips and gives open command to the breaker open coil. Autoreclosing REQ2 is initiated and AR running, AR2 Requested and Shot1 Running signals are activated.
  • Page 270 Instruction manual –AQ F205 Feeder Protection Relay 270 (404 4.3.3.5 A UTORECLOSING SEQUENCE FROM RIP WITH TWO SHOT HIGH SPEED SUCCEEDS The Scheme for autoreclosing starter and shots is the same than in the previous examples with same settings and signals. In this example fault is cleared by the high speed autoreclosing.
  • Page 271 Instruction manual –AQ F205 Feeder Protection Relay 271 (404 1. Earth fault is found in the protected line which causes directional earth fault protection I0Dir> to start and calculate the operating time for the trip. 2. I0Dir> trips and gives open command to the breaker open coil. Autoreclosing REQ2 is initiated and AR running, AR2 Requested and Shot1 Running signals are activated.
  • Page 272 Instruction manual –AQ F205 Feeder Protection Relay 272 (404 Figure 4.3.3.6-105 Settings for earth fault reclosing with two shots. When Start signal is used for the autoreclosing the timings of the fault durations are taken care by the autorecloser function and the starting / arcing times needs to be set accordingly.
  • Page 273 Instruction manual –AQ F205 Feeder Protection Relay 273 (404 3. Circuit breaker is opened and I> Start signal is released and simultaneously REQ1 signal for autorecloser is released. Recloser starts to calculate the Shot1 Dead Time for closing the breaker.
  • Page 274 Instruction manual –AQ F205 Feeder Protection Relay 274 (404 Figure 4.3.3.7-107 Settings for overcurrent reclosing with two shots. This type of sequence represents 10-15% of all the faults in the medium voltage overhead line network. Figure 4.3.3.7-108 Signal status graph of the semi-permanent overcurrent autoreclosing cycle.
  • Page 275 Instruction manual –AQ F205 Feeder Protection Relay 275 (404 3. Circuit breaker is opened and I> Start signal is released and simultaneously REQ1 signal for autorecloser is released. Recloser starts to calculate the Shot1 Dead Time for closing the breaker.
  • Page 276 Instruction manual –AQ F205 Feeder Protection Relay 276 (404 Figure 4.3.3.8-109 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. Figure 4.3.3.8-110 Signal status graph of the transient overcurrent autoreclosing cycle.
  • Page 277 Instruction manual –AQ F205 Feeder Protection Relay 277 (404 3. Circuit breaker is opened and I> Start signal is released and simultaneously REQ1 signal for autorecloser is released. Recloser starts to calculate the Shot1 Dead Time for closing the breaker.
  • Page 278 Instruction manual –AQ F205 Feeder Protection Relay 278 (404 Figure 4.3.3.9-111 Autoreclosing with distributed generation in the line. For this operation there needs to be communication link in between of the substation master relay and 20 kV collector station incomer follower relay. When autoreclosing is initiated the collector station breaker is opened until the autoreclosing cycle is completed.
  • Page 279 Instruction manual –AQ F205 Feeder Protection Relay 279 (404 Arcing time can be used for controlling the autoreclosing in cases protection function Start signal is making the requests. In case if the request (start) activates during the Reclaim time the Arcing time calculation starts and if fault persists autorecloser shall continue to next stage.
  • Page 280 Instruction manual –AQ F205 Feeder Protection Relay 280 (404 event signals. Time stamp resolution is 1ms. Function provides also cumulative counters for each applied reclosing events and requests. Autorecloser function can be divided into starter, shot selector state machine, sorter and shot blocks which operate dynamically during the reclosing cycles based into the given settings and input signals monitoring.
  • Page 281 Instruction manual –AQ F205 Feeder Protection Relay 281 (404 the breaker is closed manually during the Dead Time autorecloser will enter to general reclaim mode and if the breaker is closed towards fault it will cause lock-out of autorecloser function.
  • Page 282 Instruction manual –AQ F205 Feeder Protection Relay 282 (404 AR5 Request Any binary Reclosing request 5, lowest priority request which overrules all lower signal in the priority requests for autoreclosing. When this request signal is activated and other conditions for reclosing are met a shot will be applied.
  • Page 283 Instruction manual –AQ F205 Feeder Protection Relay 283 (404 AR Reclaim time On When autorecloser is calculating Reclaim time this signal is activated. Signal can be connected to any relay IO as well as into communication protocols. Status change of the output signals will always cause recorded event also in the AR registers and AR continuous status indications.
  • Page 284 Instruction manual –AQ F205 Feeder Protection Relay 284 (404 autoreclosing. If during this time autoreclosing request is applied autorecloser will enter to locked state preventing further reclosing attempts. This selection can be changed dynamically by setting group selection in real time in the IED. Default setting is 10.000s.
  • Page 285 Instruction manual –AQ F205 Feeder Protection Relay 285 (404 Figure 4.3.3.14-113 Autorecloser shot setting parameters. Autorecloser shot settings are grouped into corresponding rows where setting of each shot is straightforward. From the settings can be seen how the reclosing cycle is executed by each request row by row and which functions initiate requests and which shots and requests are in use.
  • Page 286 Instruction manual –AQ F205 Feeder Protection Relay 286 (404 4.3.3.15 I NHIBIT AND OCKED STATES OF AUTORECLOSER FUNCTION Autorecloser has several locked and inhibit states where reclosing for some given reason cannot be allowed. When autorecloser function enters into the not ready state it will give indication of the reason it cannot be in ready state in order to quickly rectify what is causing the problem of the functions operation.
  • Page 287 Instruction manual –AQ F205 Feeder Protection Relay 287 (404 In the function is available 12 last registers where the triggering event of the function is recorded with time stamp and process data values. Table 4.3.3.16-184. Event codes of the OBJ function instances 1 – 5.
  • Page 288 Instruction manual –AQ F205 Feeder Protection Relay 288 (404 4069 63 AR1 37 Shot 3 Execute On 4070 63 AR1 38 Shot 3 Execute Off 4071 63 AR1 39 Shot 4 Execute On 4072 63 AR1 40 Shot 4 Execute Off...
  • Page 289 Instruction manual –AQ F205 Feeder Protection Relay 289 (404 Corresponding event list is as below (including also Object and protection events): dd.mm.yyyy hh:mm:ss.mss 1664 NEF1 Start ON dd.mm.yyyy hh:mm:ss.mss 1666 NEF1 Trip ON dd.mm.yyyy hh:mm:ss.mss 4065 AR1 Shot 1 Execute On dd.mm.yyyy hh:mm:ss.mss...
  • Page 290 Instruction manual –AQ F205 Feeder Protection Relay 290 (404 Shot 1 started Shot 2 started Shot 3 started Shot 4 started Shot 5 started Shot 1 requested by AR1 Shot 2 requested by AR1 Shot 3 requested by AR1 Shot 4 requested by AR1...

  • Page 291: Cold Load Pick-Up (Clpu)

    Instruction manual –AQ F205 Feeder Protection Relay 291 (404 4.3.4 C (CLPU) OLD LOAD PICK Cold load pick-up function (CLPU) is used for detecting the so called “cold load” situations which relate to the distribution feeder protection after service restoration in which loss of load diversity has occurred.
  • Page 292 Instruction manual –AQ F205 Feeder Protection Relay 292 (404 Figure 4.3.4-114 Simplified function block diagram of the CLPU function. 4.3.4.1 M EASURED INPUT VALUES Function block uses analog current measurement values. Function block always utilizes peak-to-peak measurement from samples and by user selection the monitored magnitude can be either fundamental frequency RMS values, True RMS values from the whole harmonic specter of 32 components or peak to peak values.
  • Page 293 Instruction manual –AQ F205 Feeder Protection Relay 293 (404 inbuilt in the function and is always related to the setting value. 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.
  • Page 294 Instruction manual –AQ F205 Feeder Protection Relay 294 (404 4.3.4.4 O PERATING TIME CHARACTERISTICS FOR ACTIVATION AND RESET The operating timers’ behavior of the function can be set for activation and the cold load pick up situation monitoring and release.
  • Page 295 Instruction manual –AQ F205 Feeder Protection Relay 295 (404 ILow IHigh current is in between of the start-up condition is considered to be over. The Tmin CLPU signal can be prolonged over this time by setting to higher value than 0.000s.
  • Page 296 Instruction manual –AQ F205 Feeder Protection Relay 296 (404 IOver In this example the measured current is exceeding the setting during the startup situation and causes the CLPU signal immediate release. Figure 4.3.4.4-118 Example of timers and pick-up parameters. Activated CLPU instant release due to too long starting.
  • Page 297 Instruction manual –AQ F205 Feeder Protection Relay 297 (404 ILow Tset. CLPU activates after current has been under setting for time When current ILow IHigh Tmin exceed the setting but not the CLPU signal is active until the time. If no...
  • Page 298 Instruction manual –AQ F205 Feeder Protection Relay 298 (404 Table 4.3.4.5-189. Event codes of the CLPU function instances 1 – 4. Event Event Event Event Number channel Event block name Code Description Type 2688 42 CLP1 0 LowStart ON 2689...

  • Page 299: Switch On To Fault (Sotf)

    Instruction manual –AQ F205 Feeder Protection Relay 299 (404 4.3.5 S (SOTF) WITCH ON TO FAULT Switch on to fault (SOTF) function is used for speeding up the tripping in case if the breaker is closed towards a fault or forgotten earthing in order to reduce the damage in the fault- or problem location.
  • Page 300 Instruction manual –AQ F205 Feeder Protection Relay 300 (404 Table 4.3.5.1-191 Signal inputs used by the SOTF function. Input Description SOTF activate Binary input for the function to arm and start calculate the SOTF time. Any binary input signal can be used to activate SOTF and start the calculation. Start of the function is applied from rising edge of the signal.

  • Page 301: Synchrocheck Function Δv/Δa/Δf (25)

    Instruction manual –AQ F205 Feeder Protection Relay 301 (404 In the register of the SOTF function is recorded activated “On” event process data. In the table below is presented the structure of SOTF function register content. This information is available in 12 last recorded events for all provided instances separately.
  • Page 302 Instruction manual –AQ F205 Feeder Protection Relay 302 (404 Figure 4.3.1-2 Example connection of synchrocheck function in 2LL+U3+U0 mode when the SYN2 stage is in use and UL12 is the reference voltage. Figure 4.3.1-3 Example connection of synchrocheck function in 2LL+U3+U4 mode when...
  • Page 303 Instruction manual –AQ F205 Feeder Protection Relay 303 (404 Figure 4.3.1-4 Example application of synchrocheck over one breaker in 3LL and 3LN VT connection situations.
  • Page 304 Instruction manual –AQ F205 Feeder Protection Relay 304 (404 Figure 4.3.1-5 Example application of synchrocheck over one breaker with 2LL VT connection.
  • Page 305 Instruction manual –AQ F205 Feeder Protection Relay 305 (404 Figure 4.3.1-6 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.
  • Page 306 Instruction manual –AQ F205 Feeder Protection Relay 306 (404 Figure 4.3.1-7 Example application of synchrocheck over three beakers (only in available 2LL+U3+U4 VT connection). Reference of the U3 and U4 channels must be the same (U12, U23 or U31). The two systems are synchronized when three aspects of the compared voltages are matched which are magnitudes of the voltages, frequencies of the voltages and phase angles of the voltages.
  • Page 307 Instruction manual –AQ F205 Feeder Protection Relay 307 (404 used to determine which conditions have to be met in addition to the previously mentioned three aspects to consider the systems synchronized. Figure 4.3.1-8 Different states of the system 1.1.1.1 M EASURED INPUT VALUES Analog voltage measurement values are used for the function block.
  • Page 308 Instruction manual –AQ F205 Feeder Protection Relay 308 (404 1.1.1.2 F UNCTION BLOCKING In the blocking element the block signal is checked in the beginning of each program cycle. Blocking signal is received from the blocking matrix for the function dedicated input. If the blocking signal is not activated when the synchronization is ok, a SYN OK signal is generated.
  • Page 309 Instruction manual –AQ F205 Feeder Protection Relay 309 (404 Table 4-196 Synchrocheck stage settings Name Range Step Default Description SYN U conditions LL only LL only Allowed states of the supervised systems. LL & LD LL & DL LL & DD LL &...
  • Page 310 Instruction manual –AQ F205 Feeder Protection Relay 310 (404 Table 4-197 Event codes of the synchrocheck function instance 1 – 3. Event Event Event Event Alarm Number channel Event block name Code Description Type Type 2880 45 SYN1 0 SYN1 Blocked On...

  • Page 311: Monitoring Functions

    Instruction manual –AQ F205 Feeder Protection Relay 311 (404 4.4 M ONITORING FUNCTIONS 4.4.1 C (CTS) URRENT TRANSFORMER SUPERVISION Current transformer supervision (CTS) function is meant to be used for monitoring the CT:s, wirings in between of the IED and IED CT inputs in case of malfunction or wire breaks.
  • Page 312 Instruction manual –AQ F205 Feeder Protection Relay 312 (404 each of the two output signal. Time stamp resolution is 1ms. Function provides also cumulative counters for CTS alarm and BLOCKED events. In the following figure is presented the simplified function block diagram of the CTS function.
  • Page 313 Instruction manual –AQ F205 Feeder Protection Relay 313 (404 Table 4.4.1.1-198 Analogic magnitudes used by the CTS function. Signal Description Time base IL1RMS Fundamental RMS measurement of phase L1/A current 5 ms IL2RMS Fundamental RMS measurement of phase L2/B current...
  • Page 314 Instruction manual –AQ F205 Feeder Protection Relay 314 (404 Table 4.4.1.2-200 Pick-up characteristics setting Name Range Step Default Description Iset Highlimit 0.01 … 40.00 x In 0.01 x In 1.20 x In Pick-up threshold for phase current measurement. This setting limit defines the upper limit for the phase current pick-up element.
  • Page 315 Instruction manual –AQ F205 Feeder Protection Relay 315 (404 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. 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 passed for blocking to be active in time.
  • Page 316 Instruction manual –AQ F205 Feeder Protection Relay 316 (404 Figure 4.4.1.4-124 System in case when secondary circuit fault is found in phase L1 wiring. When fault is detected and all of the conditions are met the CTS timer will start counting. If the situation continues until the set time has been spent CTS will issue alarm.
  • Page 317 Instruction manual –AQ F205 Feeder Protection Relay 317 (404 Figure 4.4.1.4-126 System in case when there is no wiring fault and heavy unbalance. If any of the phases is over the Iset Highlimit the operation of the CTS is not activated. This behavior is applied in short circuit and earth faults also if the fault current exceeds the Iset high setting.
  • Page 318 Instruction manual –AQ F205 Feeder Protection Relay 318 (404 Figure 4.4.1.4-128 System in normal situation when measuring also the residual current. When the residual condition is added the sum current and residual current are compared against each other and the wiring condition can be verified.
  • Page 319 Instruction manual –AQ F205 Feeder Protection Relay 319 (404 Figure 4.4.1.4-130 System in case when primary phase current wiring is broken. In this case all other conditions are met except the residual difference which is now 0 x In and thus indicate primary side fault.
  • Page 320 Instruction manual –AQ F205 Feeder Protection Relay 320 (404 4.4.1.5 E VENTS AND REGISTERS The CTS function generates events and registers from the status changes of the ALARM activated and blocked signals. To main event buffer is possible to select status “On” or “Off”...

  • Page 321: Disturbance Recorder (Dr)

    Instruction manual –AQ F205 Feeder Protection Relay 321 (404 4.4.2 Disturbance recorder (DR) The disturbance recorder in AQ-2xx IED is a high capacity (60 Mbyte) and fully digital recorder integrated to protection relay. Maximum sample rate of the recorder analog channels is 64 samples per cycle.
  • Page 322 Instruction manual –AQ F205 Feeder Protection Relay 322 (404 Possible digital channels vary according the IED type. All digital channels are presented below: Table 4.4.2.1-205 Digital recording channels can be chosen between channels represented in table below. Signal Description Sample rate Pri.Pha.curr.IL1...
  • Page 323 Instruction manual –AQ F205 Feeder Protection Relay 323 (404 Pri.Pos.seq.curr. Pri.Neg.seq.curr. Pri.Zero.seq.curr. Pos.seq.curr.angle Neg.seq.curr.angle Zero.seq.curr.angle Res.curr.I01 TRMS Res.curr.I01 TRMS Sec Res.curr.I01 TRMS Pri Res.curr.I02 TRMS Res.curr.I02 TRMS Sec Res.curr.I02 TRMS Pri Pha.L1 ampl. THD Pha.L1 pow. THD Pha.L2 ampl. THD Pha.L2 pow.
  • Page 324 Instruction manual –AQ F205 Feeder Protection Relay 324 (404 U3Volt TRMS pri U3Volt TRMS sec U4Volt TRMS p.u. U4Volt TRMS pri U4Volt TRMS sec Pos.seq.Volt.p.u Pos.seq.Volt.pri Pos.seq.Volt.sec Neg.seq.Volt.p.u Neg.seq.Volt.pri Neg.seq.Volt.sec Zero.seq.Volt.p.u Zero.seq.Volt.pri Zero.seq.Volt.sec U1 Angle U2 Angle U3 Angle U4 Angle Pos.Seg.volt.Angle...
  • Page 325 Instruction manual –AQ F205 Feeder Protection Relay 325 (404 Logical Input 1…32 Internal Relay Fault active Stage START signals Stage TRIP signals Stage BLOCKED signals CTS ALARM CTS BLOCKED THDPH> START THDPH> ALARM THDI01> START THDI01> ALARM THDI02> START THDI02> ALARM THD>...
  • Page 326 Instruction manual –AQ F205 Feeder Protection Relay 326 (404 4.4.2.2 R ECORDING SETTINGS AND TRIGGERING Disturbance recorder can be triggered manually or automatically by using dedicated triggers. Every signal listed in “Digital recording channels” –list can be selected to trig the recorder.
  • Page 327 Instruction manual –AQ F205 Feeder Protection Relay 327 (404 Notice that disturbance recorder is not ready unless the “Max length of recording” is showing some value other than zero. At least one trigger input has to be selected to “Recorder Trigger”...
  • Page 328 Instruction manual –AQ F205 Feeder Protection Relay 328 (404 Table 4.4.2.4-207 Disturbance recorder settings. When there is at least one recording in the memory of the IED the recording can be analyzed by using AQviewer software. First the recording has to be read from the memory of the IED by selecting Disturbance Recorder ...
  • Page 329 Instruction manual –AQ F205 Feeder Protection Relay 329 (404 capable to open original packed zip files directly or comtrade files as they are as far as both *.cfg and *.dat are located in same directory. Table 4.4.2.5-208 Open stored recordings.
  • Page 330 Instruction manual –AQ F205 Feeder Protection Relay 330 (404 1. To remove plotters one at the time use red minus key icon “1” that can be found on top. Note, “Remove Plotter” -text appears when moving mouse on top of the icon.

  • Page 331: Measurement Recorder

    Instruction manual –AQ F205 Feeder Protection Relay 331 (404 4.4.3 M EASUREMENT RECORDER Specific measurements can be recorded on a file by using the measurement recorder. In the measurement recorder-dialog, the desired measurements to be recorded can be selected by checking the checkboxes. A connection to a relay must be established via AQtivate-software and live edit mode must be enabled, for the measurement recorder to be able to activate.

  • Page 332: Circuit Breaker Wear -Monitor (Cbw)

    Instruction manual –AQ F205 Feeder Protection Relay 332 (404 4.4.4 C (CBW) IRCUIT BREAKER WEAR MONITOR Circuit breaker wear (CBW) function is used for monitoring the circuit breaker lifetime before maintenance needs due to interrupting currents and mechanical wearing. CBW function uses the circuit breaker manufacturer given data for the breaker operating cycles in relation to the current breaker has operated.
  • Page 333 Instruction manual –AQ F205 Feeder Protection Relay 333 (404 Function provides also cumulative counters for Open operations, Alarm 1 and Alarm 2 events. Operations left for each phase can be monitored also in the function. In the following figure is presented the simplified function block diagram of the CBW function.
  • Page 334 Instruction manual –AQ F205 Feeder Protection Relay 334 (404 Name Range Step Default Description Current 1 0.00…100.00 kA 0.01 kA 1.00 kA Nominal operating current of the breaker (Inom) (rms) Operations 0… 200000 Op 1 Op 50000 Op Interrupting life operations at rated current...
  • Page 335 Instruction manual –AQ F205 Feeder Protection Relay 335 (404 Table 4.4.4.5-213. Event codes of the CBW function instance Event Event Event Event Number channel Event block name Code Description Type 3713 58 CBW1 1 CBWEAR1 Triggered 3714 58 CBW1 2 CBWEAR1 Alarm1 On...
  • Page 336 Instruction manual –AQ F205 Feeder Protection Relay 336 (404 4.4.4.6 S ETTING EXAMPLE Setting example: Tavrida ISM/TEL-24-16 / 800 – 057 circuit breaker...
  • Page 337 Instruction manual –AQ F205 Feeder Protection Relay 337 (404 Set the CBW stage as follows: Parameter 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...

  • Page 338: Total Harmonic Distortion Monitor (Thd)

    Instruction manual –AQ F205 Feeder Protection Relay 338 (404 4.4.5 T (THD) OTAL HARMONIC DISTORTION MONITOR Total harmonic distortion monitor function (THD) is used for monitoring the current harmonic content. THD is a measurement of the harmonic distortion present and is defined as the ratio of the sum of powers of all harmonic components to the power of fundamental frequency.
  • Page 339 Instruction manual –AQ F205 Feeder Protection Relay 339 (404 changed only by user input in the setup phase of the function. THD function utilizes total of eight separate setting groups which can be selected from one common source. The operational logic consists of input magnitude processing, threshold comparator, block signal check, time delay characteristics and output processing.
  • Page 340 Instruction manual –AQ F205 Feeder Protection Relay 340 (404 Table 4.4.5.1-215 Analogic magnitudes used by the THD function. Signal Description Time base IL1FFT Fundamental RMS measurement of phase L1/A current 5 ms IL2FFT Fundamental RMS measurement of phase L2/B current...
  • Page 341 Instruction manual –AQ F205 Feeder Protection Relay 341 (404 Table 4.4.5.2-216 Pick-up characteristics setting Name Range Step Default Description Enable PH Enable of the THD alarm function from phase currents. Enable I01 Enable of the THD alarm function from residual current input I01.
  • Page 342 Instruction manual –AQ F205 Feeder Protection Relay 342 (404 4.4.5.4 O PERATING TIME CHARACTERISTICS FOR ACTIVATION AND RESET The operating timers’ behavior of the function can be set for activation and the cold load pick up situation monitoring and release.
  • Page 343 Instruction manual –AQ F205 Feeder Protection Relay 343 (404 Table 4.4.5.5-218. Event codes of the THD function Event Event Event Event Number channel Event block name Code Description Type 3521 55 THD1 1 THD Start Phase On 3522 55 THD1...

  • Page 344: System Integration

    Instruction manual –AQ F205 Feeder Protection Relay 344 (404 YSTEM INTEGRATION The AQ-200 series IED have fixed communication connections RS-485 (2-wire) and RJ- 45options for system integration. Both of these rear ports are designed for SCADA and service bus communications. In addition to these communication ports various communication media options can be installed to the IED including serial fiber as well as redundant Ethernet option cards.

  • Page 345: Modbustcp And Modbusrtu

    Instruction manual –AQ F205 Feeder Protection Relay 345 (404 5.1.2 M ODBUS ODBUS The device supports both Modbus TCP and Modbus RTU communication. Modbus TCP uses the Ethernet connection for communicating with Modbus TCP clients. Modbus RTU is a serial protocol which can be selected for the available serial ports.

  • Page 346: Modbusio

    Instruction manual –AQ F205 Feeder Protection Relay 346 (404 5.1.3 M ODBUS ModbusIO can be selected for communication on available serial ports. ModbusIO is actually a ModbusRTU master implementation dedicated for communication with serial ModbusRTU slaves such as RTD inputs modules. Up to 3 ModbusRTU slaves can be connected to the same bus polled by the ModbusIO implementation.

  • Page 347: 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 348: Connections

    Instruction manual –AQ F205 Feeder Protection Relay 348 (404 ONNECTIONS Block diagram AQ-F205 Figure 5.1-1 Block diagram of AQ-F205.
  • Page 349 Instruction manual –AQ F205 Feeder Protection Relay 349 (404 Figure 5.1-2 Connection example of AQ-F205 Feeder Protection IED.

  • Page 350: Construction And Installation

    Instruction manual –AQ F205 Feeder Protection Relay 350 (404 ONSTRUCTION AND INSTALLATION Even though AQ-F205 is a member of modular and scalable AQ-2xx series it does not have optional modules and the construction and content of the relays hardware are fixed. In the...

  • Page 351: Cpu, Io And Power Supply Module

    Figure 7-2 Hardware scanning and IO naming principle in AQ-F205 IED In AQ F205 relays case available binary input channels amount is DI1…DI11, from which DI1-DI3 are in the CPU module, DI4-DI11 are in Slot E. If the configuration should differ from this example the same principle is always applied into the IED.
  • Page 352 Instruction manual –AQ F205 Feeder Protection Relay 352 (404 Connector Description COM A : Communication port A, RJ-45. For Modbus TCP and station bus communications. COM B : Communication port B, RS-485. For Modbus RTU and IEC- 103 SCADA communications. Pin-out starting from the left: 1=DATA +, 2=DATA -, 3=GND, 4&5=Terminator resistor...

  • Page 353: Current Measurement Module

    Instruction manual –AQ F205 Feeder Protection Relay 353 (404 group control or similar it takes 0…10 milliseconds to change the group. In practice the delay is between 2…8 milliseconds about 95% of the time. In case the binary input is connected directly to binary output (T1…Tx) it takes additional third 5 millisecond round.

  • Page 354: Voltage Measurement Module

    Instruction manual –AQ F205 Feeder Protection Relay 354 (404 Phase current input characteristics are as follows: o Measurement range Phase currents 0…250 ARMS  Coarse residual current 0…150ARMS  Fine residual current 0…75ARMS  o Angle measurement accuracy less than ± 0.5 degrees with nominal current.

  • Page 355: Digital Input Module Di8

    Instruction manual –AQ F205 Feeder Protection Relay 355 (404 dimensioning voltage can be 100…400 V. Voltages are calibrated in range of 0…240 V which provide ± 0.2% inaccuracy in same range. Voltage input characteristics are as follows: o Measurement range Per channel 0…480 V...

  • Page 356: Digital Output Module Do5

    Instruction manual –AQ F205 Feeder Protection Relay 356 (404 Properties of this binary input module provided inputs are exactly the same than inputs in the CPU-module. Binary inputs have as standard current consumption of 2 mA when activated and the operating voltage range is from 0V to 265VAC/DC with software settable activation/release threshold and 1V resolution.

  • Page 357: Installation And Dimensions

    Instruction manual –AQ F205 Feeder Protection Relay 357 (404 Binary outputs control can be settable from the software. As a standard binary outputs are controlled in 5 ms program cycle. All output contacts are mechanical type. Rated voltage of the NO/CO outputs is 250VAC/DC.
  • Page 358 Instruction manual –AQ F205 Feeder Protection Relay 358 (404 Figure 7.6-9 Installation of the AQ-2xx IED...
  • Page 359 Instruction manual –AQ F205 Feeder Protection Relay 359 (404 Figure 7.6-10 Panel cut-out and spacing of the AQ-2xx IED.

  • Page 360: Applications

    Instruction manual –AQ F205 Feeder Protection Relay 360 (404 PPLICATIONS 8.1 3LN+U0 CONNECTION EXAMPLE Connection example of outgoing feeder application with three lines to neutral voltages and zero sequence voltage connected. Three phase currents and residual current are connected as well.

  • Page 361: 3-Phase, 3-Wire Aron Input Connection Example

    Instruction manual –AQ F205 Feeder Protection Relay 361 (404 8.2 3- , 3- ARON PHASE WIRE INPUT CONNECTION EXAMPLE In this chapter is presented a connection example of an application with only two installed protection CTs. Connection is suitable for both motor –and feeder protection applications.

  • Page 362: Trip Circuit Supervision

    Instruction manual –AQ F205 Feeder Protection Relay 362 (404 8.3 T RIP CIRCUIT SUPERVISION 8.3.1 T RIP CIRCUIT OPEN COIL SUPERVISION WITH ONE DIGITAL INPUT AND CONNECTED TRIP OUTPUT Trip circuit supervision is used to monitor the wiring from auxiliary power supply trough IEDs binary output and all the way to the open coil of the breaker.
  • Page 363 Instruction manual –AQ F205 Feeder Protection Relay 363 (404 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...

  • Page 364: Trip Circuit Open Coil Supervision With One Digital Input And Connected And Latched Trip Output

    Instruction manual –AQ F205 Feeder Protection Relay 364 (404 the breaker is open. This means that the open coil is energized for a short moment even the breaker is already open. Coil could be energized even moment longer if circuit breaker failure protection has to be used and incomer is performing the tripping.
  • Page 365 Instruction manual –AQ F205 Feeder Protection Relay 365 (404 signal (CTS) activates. Normally closed digital input activates only when there is something wrong in the trip circuit and the auxiliary power goes off. While the breaker is open the logic is blocked.

  • Page 366: Technical Data

    Instruction manual –AQ F205 Feeder Protection Relay 366 (404 ECHNICAL DATA 9.1 C ONNECTIONS 9.1.1 M EASUREMENTS Table 9.1.1-1 Current measurement module Measurement channels / CT inputs Three phase currents, One coarse residual current, and One sensitive residual current. Total of five separate CT inputs.
  • Page 367 Instruction manual –AQ F205 Feeder Protection Relay 367 (404 Current measurement inaccuracy 0.002xIn…25xIn < ±0.5% or < ±0.6mA 25xIn…375xIn < ±0.5% Angle measurement inaccuracy < ±0.1 ° Burden (50Hz/60Hz) <0.1VA Terminal block Maximum wire diameter: Solid or stranded wire 4 mm Phoenix Contact FRONT 4H-6,35 Table 9.1.1-2 voltage measurement module...
  • Page 368 Instruction manual –AQ F205 Feeder Protection Relay 368 (404 Table 9.1.1-3 Frequency, power and energy measurement accuracy Frequency measuring range 6…75 Hz fundamental, up to 31 harmonic current and voltage Inaccuracy 10 mHz Power measurement P, Q, S Frequency range 6…75 Hz...

  • Page 369: Auxiliary Voltage

    Instruction manual –AQ F205 Feeder Protection Relay 369 (404 9.1.2 A UXILIARY VOLTAGE Table 9.1.2-4 Power supply model A Rated auxiliary voltage 85…265V(AC/DC) Power consumption < 7W < 15W Maximum permitted interrupt time < 150ms with 110VDC DC ripple < 15 %...

  • Page 370: Binary Outputs

    Instruction manual –AQ F205 Feeder Protection Relay 370 (404 9.1.4 B INARY OUTPUTS Table 9.1.4-7 Normal Open binary outputs Rated auxiliary voltage 265V(AC/DC) Continuous carry Make and carry 0.5s Make and carry 3s Breaking capacity, DC (L/R = 40 ms)
  • Page 371 Instruction manual –AQ F205 Feeder Protection Relay 371 (404 Table 9.1.5-10 Rear panel system communication port A Port media Copper Ethernet RJ-45 Number of ports 1pcs Port protocols Modbus TCP, DNP 3.0, FTP, Telnet Data transfer rate 100 MB System integration Can be used for system protocols and for local programming Table 9.1.5-11 Rear panel system communication port B...

  • Page 372: Protection Functions

    Instruction manual –AQ F205 Feeder Protection Relay 372 (404 9.2 P ROTECTION FUNCTIONS All specified operation times include mechanical trip contact delay. 9.2.1 C URRENT PROTECTION FUNCTIONS (50/51) I>, I>>, I>>>, I>>>> VERCURRENT Input signals Input magnitudes Phase current fundamental freq RMS...
  • Page 373 Instruction manual –AQ F205 Feeder Protection Relay 373 (404 (50N/51N) I0>, I0>>, I0>>>, I0>>>> ARTH FAULT Input signals Input magnitudes Residual current fundamental freq RMS Residual current TRMS Residual current peak-to-peak Pick-up Used magnitude Measured residual current I01 (1 A) Measured residual current I02 (0.2 A)
  • Page 374 Instruction manual –AQ F205 Feeder Protection Relay 374 (404 (67) I >, I >>, I >>>, I >>>> IRECTIONAL OVERCURRENT Input signals Input magnitudes Phase current fundamental freq RMS Phase current TRMS Phase current peak-to-peak P-P +U voltage fundamental frequency RMS...
  • Page 375 Instruction manual –AQ F205 Feeder Protection Relay 375 (404...
  • Page 376 Instruction manual –AQ F205 Feeder Protection Relay 376 (404 (67N) I0 >, I0 >>, I0 >>>, I0 >>>> IRECTIONAL EARTH FAULT Input signals Input current magnitudes Residual current fundamental freq RMS Residual current TRMS Residual current peak-to-peak Input voltage magnitude...
  • Page 377 Instruction manual –AQ F205 Feeder Protection Relay 377 (404 Reset Reset ratio -Current and voltage 97 % of pick-up current and voltage setting -U0/I0 angle 2.0 ° Reset time setting 0.000 … 150.000 s, step 0.005 s Inaccuracy: Reset time ±1.0 % or ±35 ms...
  • Page 378 Instruction manual –AQ F205 Feeder Protection Relay 378 (404 OC (50H/51H, 68) I >, I >>, I >>>, I >>>> ARMONIC Input signals Input magnitudes Phase current IL1/IL2/IL3 TRMS Residual current I01 TRMS Residual current I02 TRMS Pick-up Harmonic selection...
  • Page 379 Instruction manual –AQ F205 Feeder Protection Relay 379 (404 present. Harmonic stage stays active in case the harmonic content is above the pick-up limit. -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.
  • Page 380 Instruction manual –AQ F205 Feeder Protection Relay 380 (404 (87N) I0 > ESTRICTED EARTH FAULT ABLE END DIFFERENTIAL Input magnitudes Phase currents, I01, I02 fundamental frequency RMS Calculated bias and residual differential currents Operating modes Restricted earth fault Cable end differential...

  • Page 381: Voltage Protection Functions

    Instruction manual –AQ F205 Feeder Protection Relay 381 (404 9.2.2 V OLTAGE PROTECTION FUNCTIONS (59) U>, U>>, U>>>, U>>>> VERVOLTAGE Input signals Input magnitudes P-P voltage fundamental frequency RMS P-E voltage fundamental frequency RMS Pick-up Pick-up terms 1 voltage 2 voltages...
  • Page 382 Instruction manual –AQ F205 Feeder Protection Relay 382 (404 (27) U<, U<<, U<<<, U<<<< NDER VOLTAGE Input signals Input magnitudes P-P voltage fundamental frequency RMS P-E voltage fundamental frequency RMS Pick-up Pick-up terms 1 voltage 2 voltages 3 voltages Pick-up setting 20.00…120.00 %Un, setting step 0.01 %Un...
  • Page 383 Instruction manual –AQ F205 Feeder Protection Relay 383 (404 (59N) U0>, U0>>, U0>>>, U0>>>> EUTRAL OVERVOLTAGE Input signals Input magnitudes U0 voltage fundamental frequency RMS Pick-up Pick-up voltage setting 1.00…50.00 % U0n, setting step 0.01 x In Inaccuracy -Voltage U0 ±1.5 %U0...

  • Page 384: Power Protection Functions

    Instruction manual –AQ F205 Feeder Protection Relay 384 (404 9.2.3 P OWER PROTECTION FUNCTIONS (32/37) P>, P<, P > OWER Input signals Input magnitudes Phase current and voltage fundamental freq RMS Pick-up P> 0.10…150000.00 kW, setting step 0.01 kW >...
  • Page 385 Instruction manual –AQ F205 Feeder Protection Relay 385 (404 Freq reference1 CT1IL1, CT2IL1, VT1U1, VT2U1 Freq reference2 CT1IL2, CT2IL2, VT1U2, VT2U2 Freq reference3 CT1IL3, CT2IL3, VT1U3, VT2U3 Pick-up f> pick-up setting 10.00…70.00 Hz, setting step 0.01 Hz f< pick-up setting 7.00…65.00 Hz, setting step 0.01 Hz...
  • Page 386 Instruction manual –AQ F205 Feeder Protection Relay 386 (404 (81R) >/< 1…8 ATE OF CHANGE OF FREQUENCY Input signals Sampling mode Fixed Tracking Freq reference1 CT1IL1, CT2IL1, VT1U1, VT2U1 Freq reference2 CT1IL2, CT2IL2, VT1U2, VT2U2 Freq reference3 CT1IL3, CT2IL3, VT1U3, VT2U3 Pick-up Df/dt>/<...

  • Page 387: 9.3 Control Functions

    Instruction manual –AQ F205 Feeder Protection Relay 387 (404 9.3 Control functions ET GROUP SETTINGS Setting groups 8 independent control prioritized setting groups Control scale Common for all installed functions which support setting groups Control mode Local Any digital signal available in the device...
  • Page 388 Instruction manual –AQ F205 Feeder Protection Relay 388 (404 (79) 0  1 UTORECLOSING FUNCTION Input signals Input signals Software signals (Protection, Logics, etc.) GOOSE messages Binary inputs Requests REQ1-5 5 priority request inputs, possibility to set parallel signals to...
  • Page 389 Instruction manual –AQ F205 Feeder Protection Relay 389 (404 OLD LOAD PICK Input signals Input magnitudes Phase current fundamental freq RMS Pick-up Pick-up current setting -I Low / I High / I Over 0.01…40.00 x In, setting step 0.01 x In...
  • Page 390 Instruction manual –AQ F205 Feeder Protection Relay 390 (404 SOTF WITCH ON TO FAULT Initialization signals SOTF activate input Any IED block input signal (Object closed signal etc.) Pick-up SOTF function input Any IED block input signal (I> or similar)
  • Page 391 Instruction manual –AQ F205 Feeder Protection Relay 391 (404 (25) SYN1, SYN2, SYN3 YNCHROCHECK Input signals Input magnitudes P-P voltage fundamental frequency RMS P-E voltage fundamental frequency RMS Pick-up U diff < setting 0.02…50.00 %Un, setting step 0.01 %Un Angle diff < setting 1.0…90.0 deg, setting step 0.10 deg...

  • Page 392: Monitoring Functions

    Instruction manual –AQ F205 Feeder Protection Relay 392 (404 9.4 M ONITORING FUNCTIONS () CTS URRENT TRANSFORMER SUPERVISION Input signals Input magnitudes Phase current fundamental freq RMS Residual current fundamental freq RMS (optional) Pick-up Pick-up current setting -Iset Highlimit / Iset Lowlimit / Isum difference 0.10…40.00 x In, setting step 0.01 x In...
  • Page 393 Instruction manual –AQ F205 Feeder Protection Relay 393 (404 (60) VTS USE FAILURE Input signals Measured magnitudes P-P voltage fundamental frequency RMS P-E voltage fundamental frequency RMS Pickup Pickup setting -Voltage low pickup 0.05…0.50 x Un, setting step 0.01 x Un -Voltage high pickup 0.50…1.10 x Un, setting step 0.01 x Un...
  • Page 394 Instruction manual –AQ F205 Feeder Protection Relay 394 (404 ISTURBANCE RECORDER Sample rate 8, 16, 32 or 64 sample / cycle Recording length 0.1…1800, setting step 0.001 Maximum length according chosen signals Amount of recordings 0…1000, 60MB shared flash memory reserved...
  • Page 395 Instruction manual –AQ F205 Feeder Protection Relay 395 (404 OTAL HARMONIC DISTORTION Input magnitudes Current measurement channels FFT result up to 31.st harmonic component. Operating mode Power THD Amplitude THD Pick-up setting for all comparators 0.10…200.00% , setting step 0.01% Definite time function operating time setting for 0.00…1800.00 s, setting step 0.005 s...

  • Page 396: Tests And Environmental

    Instruction manual –AQ F205 Feeder Protection Relay 396 (404 9.5 T ESTS AND ENVIRONMENTAL 9.5.1 E LECTRICAL ENVIRONMENT COMPATIBILITY Table 9.5.1-12 Disturbance tests All tests CE approved and tested according to EN 50081-2, EN 50082-2 Emission Conducted (EN 55011 class A) 0.15 - 30 MHz...

  • Page 397: Physical Environment Compatibility

    Instruction manual –AQ F205 Feeder Protection Relay 397 (404 9.5.2 P HYSICAL ENVIRONMENT COMPATIBILITY Table 9.5.2-14 Mechanical tests Vibration test 2 ... 13.2 Hz ±3.5mm 13.2 ... 100Hz, ±1.0g Shock/Bump test acc. to IEC 60255-21-2 20g, 1000 bumps/dir. Table 9.5.2-15 Environmental tests...

  • Page 398: Ordering Information

    Instruction manual –AQ F205 Feeder Protection Relay 398 (404 10 O RDERING INFORMATION Table 10-1 Ordering codes of the AQ-F205 Feeder Protection IED AQ - F 2 0 5 - X X Model F Feeder protection Device size 1 1/4 of 19" rack...

  • Page 399: 11 Appendix

    Instruction manual –AQ F205 Feeder Protection Relay 399 (404 11 Appendix AQ2xx IEC 60870-5-103 Interoperability List 1. Physical layer 1.1 Electrical interface EIA RS-485 Number of loads, 32, for one equipment 1.2 Optical interface Glass fibre Plastic fibre F-SMA type connector BFOC/2,5 type connector 1.3 Transmission speed...
  • Page 400 Instruction manual –AQ F205 Feeder Protection Relay 400 (404 3.3 Selection of standard information numbers in monitor direction 3.3.1 System functions in monitor direction Semantics <0> End of general interrogation <0> Time synchronization <2> Reset FCB <3> Reset CU <4>...
  • Page 401 Instruction manual –AQ F205 Feeder Protection Relay 401 (404 Semantics <48> Earth fault L1 <49> Earth fault L2 <50> Earth fault L3 <51> Earth fault forward, i.e. line <52> Earth fault reverse, i.e. busbar 3.3.5 Fault indications in monitor direction Semantics <64>...
  • Page 402 Instruction manual –AQ F205 Feeder Protection Relay 402 (404 3.3.7 Measurands in monitor direction Semantics <144> Measurand I <145> Measurands I, V <146> Measurands I, V, P, Q <147> Measurands IN, VEN <148> Measurands IL1,2,3, VL1,2,3, P, Q, f 3.3.8 Generic functions in monitor direction Semantics <240>...
  • Page 403 Instruction manual –AQ F205 Feeder Protection Relay 403 (404 <240> Read headings of all defined groups <241> Read values or attributes of all entries of one group <243> Read directory of a single entry <244> Read value of attribute of a single entry <245>...

  • Page 404: Reference Information

    Instruction manual –AQ F205 Feeder Protection Relay 404 (404 12 R EFERENCE INFORMATION Manufacturer information: Arcteq Ltd. Finland Visiting and postal address: Wolffintie 36 F 11 65200 Vaasa, Finland Contacts: Phone, general and commercial issues (office hours GMT +2): +358 10 3221 370...

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