ABB Relion 615 series Operation Manual Download Page 131

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RTD

Resistance temperature detector

SCL

Substation configuration language

Single-line diagram Simplified notation for representing a three-phase

power system. Instead of representing each of three

phases with a separate line or terminal, only one

conductor is represented.

SLD

Single-line diagram

SMT

Signal Matrix tool in PCM600

Connector type for glass fibre cable

STP

Shielded twisted-pair

SVG

Scalable vector graphics

Software

TCP/IP

Transmission Control Protocol/Internet Protocol

UTC

Coordinated universal time

Voltage transformer

WAN

Wide area network

WHMI

Web human-machine interface

1MRS756708 C

Section 9

Glossary

615 series

123

Operation Manual

Summary of Contents for Relion 615 series

Page 1: ...Relion Protection and Control 615 series Operation Manual...

Page 2: ......

Page 4: ...copied or disclosed only in accordance with the terms of such license Trademarks ABB and Relion are registered trademarks of ABB Group All other brand or product names mentioned in this document may...

Page 5: ...roduct failure would create a risk for harm to property or persons including but not limited to personal injuries or death shall be the sole responsibility of the person or entity applying the equipme...

Page 6: ...cerning electrical equipment for use within specified voltage limits Low voltage directive 2006 95 EC This conformity is the result of tests conducted by ABB in accordance with the product standards E...

Page 7: ...ty regulations must always be followed The frame of the IED has to be carefully earthed When the plug in unit has been detached from the case do not touch the inside of the case The IED case internals...

Page 8: ......

Page 9: ...sing of the IED 15 Section 3 615 series overview 17 Overview 17 Local HMI 18 LCD 18 LEDs 20 Keypad 20 Local HMI functionality 23 Protection and alarm indication 23 Parameter management 24 Front commun...

Page 10: ...4 Logging in 44 Logging out 44 Identifying the device 45 Navigating in the menu 46 Menu structure 47 Selecting single line diagram 47 Showing all parameters 49 Editing values 50 Committing settings 52...

Page 11: ...fault records 77 Monitoring events 78 Remote monitoring 78 Operating the IED remotely 78 Controlling 79 Controlling circuit breaker or contactor 79 Controlling with single line diagram 80 Resetting IE...

Page 12: ...on 97 Using PCM600 98 Setting the communication between IEDs and PCM600 98 Communication options 99 Setting communication parameters 99 Setting IED and communication 104 Communication settings 104 Ser...

Page 13: ...uring analog inputs 116 Testing IED operation 116 Selecting the test mode 116 Testing the digital I O interface 117 Testing functions 117 Selecting the internal fault test 118 ABB Product Data Registr...

Page 14: ...6...

Page 15: ...ify disturbances and how to view calculated and measured power grid data to determine the cause of a fault 1 2 Intended audience This manual addresses the operator who operates the IED on a daily basi...

Page 16: ...07000220 V1 EN Figure 1 The intended use of manuals in different lifecycles The engineering manual contains instructions on how to engineer the IEDs using the different tools in PCM600 The manual prov...

Page 17: ...an also be used when calculating settings The technical manual contains application and functionality descriptions and lists function blocks logic diagrams input and output signals setting parameters...

Page 18: ...he reader to important facts and conditions The tip icon indicates advice on for example how to design your project or how to use a certain function Although warning hazards are related to personal in...

Page 19: ...ations Function IEC 61850 IEC 60617 IEC ANSI Protection Three phase non directional overcurrent protection low stage PHLPTOC1 3I 1 51P 1 1 PHLPTOC2 3I 2 51P 1 2 Three phase non directional overcurrent...

Page 20: ...sitive sequence undervoltage protection PSPTUV1 U1 1 47U 1 PSPTUV2 U1 2 47U 2 Negative sequence overvoltage protection NSPTOV1 U2 1 47O 1 NSPTOV2 U2 2 47O 2 Frequency protection FRPFRQ1 f f df dt 1 81...

Page 21: ...SARC1 ARC 1 50L 50NL 1 ARCSARC2 ARC 2 50L 50NL 2 ARCSARC3 ARC 3 50L 50NL 3 Multi purpose protection 1 MAPGAPC1 MAP 1 MAP 1 MAPGAPC2 MAP 2 MAP 2 MAPGAPC3 MAP 3 MAP 3 Load shedding and restoration LSHDP...

Page 22: ...hree phase current measurement CMMXU1 3I 3I CMMXU2 3I B 3I B Sequence current measurement CSMSQI1 I1 I2 Io I1 I2 Io Residual current measurement RESCMMXU1 Io In RESCMMXU2 Io B In B Three phase voltage...

Page 23: ...ured with extensive testing during the design and manufacturing processes Moreover long life time is supported by maintenance and repair services as well as by the availability of spare parts Design a...

Page 24: ...parts and screws Steel Plastic parts PC1 LCP2 Electronics plug in module Various Plug in unit Electronics plug in modules Various Electronics LHMI module Various Plastic parts PC PBT3 LCP PA4 Metallic...

Page 25: ...ty of substation automation devices The IEDs feature draw out type design with a variety of mounting methods compact size and ease of use Depending on the product optional functionality is available a...

Page 26: ...eries LHMI The LHMI of the IED contains the following elements Display Buttons LED indicators Communication port The LHMI is used for setting monitoring and controlling 3 2 1 LCD The LHMI includes a g...

Page 27: ...y view shows the current location in the menu structure The icon area at the upper right corner of the display shows the current action or user level Current action is indicated by the following chara...

Page 28: ...ion mode can be selected with the LHMI WHMI or PCM600 3 2 3 Keypad The LHMI keypad contains push buttons which are used to navigate in different views or menus With the push buttons you can give open...

Page 29: ...tion LED 8 Open 9 Left 10 Down 11 Right 12 Key 13 Remote Local 14 Menu 15 Help 16 Communication port Object control If the control position of the IED is set to local with the R L button the IED can b...

Page 30: ...ctive digit of a parameter when entering a new setting value Key Activating the authorization procedure when the user is not logged in Logging out when the user is currently logged in Commands Table 7...

Page 31: ...veral protection functions start within a short time the last start is indicated on the display Flashing A protection function is blocked The blocking indication disappears when the blocking is remove...

Page 32: ...IED parameters Three types of parameters can be read and written Numerical values String values Enumerated values Numerical values are presented either in integer or in decimal format with minimum an...

Page 33: ...wser The supported web browser version is Internet Explorer 7 0 or later WHMI is disabled by default To enable the WHMI select Main Menu Configuration HMI Web HMI mode via the LHMI Reboot the IED for...

Page 34: ...mmand buttons can be used to edit parameters and control information via the WHMI Table 12 Command buttons Name Description Enabling parameter editing Disabling parameter editing Writing parameters to...

Page 35: ...ords Uploading part one of a disturbance record Uploading part two of a disturbance record 3 4 Authorization The user categories have been predefined for the LHMI and the WHMI each with different righ...

Page 36: ...rotocol The IEC 61850 communication implementation supports all monitoring and control functions Additionally parameter settings disturbance recordings and fault records can be accessed using the IEC...

Page 37: ...5 EF5D 4658 8AE0 01DC076E519C V1 EN Figure 7 Redundant Ethernet solution 3 6 PCM600 tool Protection and Control IED Manager PCM600 offers all the necessary functionality to work throughout all stages...

Page 38: ...ata format unit setting range visibility and access rights as well as software components that adapt the IED specific interfaces to the standard interfaces of system products and tools such as IED spe...

Page 39: ...menu Configuration Authorization Local override Set the parameter to False 4 1 1 Logging in 1 Press to activate the login procedure 2 Press or to select the user level A070888 V2 EN Figure 8 Selecting...

Page 40: ...r message indicating wrong password The current user level is shown on the LCD s upper right corner in the icon area 4 1 2 Logging out The user is automatically logged out 30 seconds after the backlig...

Page 41: ...ions such as parameter editing and breaker selection are cancelled Change the backlight timeout period in Main menu Configuration HMI Backlight timeout 4 1 4 Selecting local or remote use The control...

Page 42: ...detailed information about the device such as revision and serial number The IED information is shown on the display for a few seconds when the device starts up The same information is also found in...

Page 43: ...rast press simultaneously and The selected contrast value is stored in the non volatile memory if you are logged in and authorized to control the IED After an auxiliary power failure the contrast is r...

Page 44: ...firm the selection The IED has to be rebooted if the WHMI display symbols are changed With the LHMI the change takes effect immediately 4 1 9 Navigating in the menu Navigate the menus and change the d...

Page 45: ...re rows than the display can show at a time a scroll bar is displayed on the right A070860 V3 EN Figure 15 Scroll bar on the right To scroll the view upwards press To scroll the view downwards press T...

Page 46: ...hen the large screen is used Select Main menu Control SLD to view the single line diagram or press to navigate between main menu measurement and single line diagram GUID BA9EE384 E2F7 4390 9F7B 01E764...

Page 47: ...18 Selecting IEC as single line diagram symbol format 4 1 11 Browsing setting values 1 Select Main menu Settings Settings and press 2 Select the setting group to be viewed with or A070858 V3 EN Figure...

Page 48: ...only be increased When the symbol is the active value can only be decreased When the symbol in front of the value is the active value can either be increased or decreased A070755 V3 EN Figure 21 Last...

Page 49: ...press To set the value to the minimum press A070756 V3 EN Figure 22 Arrow symbol is active the value is set to the maximum After pressing the previous value can be restored by pressing once and vice...

Page 50: ...c order 4 1 13 Committing settings Editable values are stored either in RAM or in non volatile flash memory Values stored in flash memory are in effect also after reboot Some parameters have an edit c...

Page 51: ...cations including LEDs and latched outputs as well as registers and recordings Press the Clear button to activate a selection menu and select the wanted clearance or reset function Events and alarms a...

Page 52: ...iguration HMI Web HMI mode via the LHMI 2 Reboot the IED for the change to take effect 4 2 1 Logging in 1 Enter the username with capital letters 2 Enter the password 3 Click OK A070923 V2 EN Figure 2...

Page 53: ...device The IED information includes detailed information about the device such as revision and serial number 1 Click Information in the WHMI menu structure 2 Click a submenu to see the data 1MRS756708...

Page 54: ...ion and status The Events view contains a list of events produced by the application configuration The Programmable LEDs view shows the status of programmable LEDs The Phasor diagrams view shows phaso...

Page 55: ...more detailed submenus Events Measurements Disturbance records Settings Configuration Monitoring Tests Information Clear Language Control Parameter list WHMI settings 4 2 5 Selecting single line diag...

Page 56: ...k Single Line Diagram in the menu bar to view the single line diagram GUID 961E57A5 BFDF 4BB5 9615 B8DD4C3707BE V1 EN Figure 30 Viewing the single line diagram with IEC symbols Section 4 1MRS756708 C...

Page 57: ...D 8B4E 83EACC433182 V1 EN Figure 31 Viewing the single line diagram with ANSI symbols 4 2 6 Showing all parameters 1 Click Parameter list in the main menu 1MRS756708 C Section 4 Using the HMI 615 seri...

Page 58: ...in CSV file format 4 2 7 Editing values 1 Click the menu in the WHMI tree 2 Click the submenu to see function blocks 3 Click a function block to see the setting values 4 Click Enable Write Some param...

Page 59: ...um and step values for a parameter are shown in the Min Max and Step columns Setting group values are indicated with A070930 V4 EN Figure 34 Editing a value If the entered value is within the accepted...

Page 60: ...itten to the IED If writing is enabled accidentally click Disable Write Disable Write cannot be selected when a value has already been written to the IED After clicking Write to IED click either Commi...

Page 61: ...nto IED s database for use A070931 V4 EN Figure 37 Writing values to IED The values are not stored to the flash memory 2 Click Commit to write the values to the flash memory Click Reject to cancel sav...

Page 62: ...re not taken into use and they are lost after a reboot 4 2 9 Clearing and acknowledging Reset acknowledge or clear all messages and indications including LEDs and latched outputs as well as registers...

Page 63: ...070935 V5 EN Figure 39 Selecting clear menu 2 In the New Value box click Clear to select the item to be cleared 3 Click Write to IED 1MRS756708 C Section 4 Using the HMI 615 series 55 Operation Manual...

Page 64: ...rammable LEDs view The programmable LEDs view shows the status of the programmable LEDs These are the same LEDs that are located on the upper right side of the LHMI panel Click Programmable LEDs in th...

Page 65: ...vent view contains a list of events produced by the application configuration When event page is opened it displays up to 100 latest events at one time The event list is updated automatically 1 Click...

Page 66: ...EN Figure 42 Monitoring events 2 Click Freeze to stop updating the event list 3 Select a page from the drop down menu to view older documents Section 4 1MRS756708 C Using the HMI 58 615 series Operat...

Page 67: ...with a spreadsheet program such as OpenOffice org Calc or Microsoft Excel 5 Click Clear events to clear all events from the IED 4 2 12 Selecting the disturbance record view Disturbance records are li...

Page 68: ...turbance record view 4 2 12 1 Uploading disturbance records 1 Click Disturbance records on the menu bar 2 To upload a disturbance record click the icons in the CFG and DAT columns of the record Sectio...

Page 69: ...th the files in the same folder on your computer 4 Open the disturbance record files with a suitable program 4 2 12 2 Triggering the disturbance recorder manually 1 Click Disturbance records on the me...

Page 70: ...2 12 3 Deleting disturbance records 1 Click Disturbance records on the menu bar 2 Delete records Click Delete all to delete all records Select one or more recordings and click Delete to delete selecte...

Page 71: ...V2 EN Figure 47 Deleting disturbance records 3 Click OK to confirm or Cancel to cancel the deletion 4 2 13 Selecting phasor diagrams 1 Click Phasor diagrams in the menu bar 1MRS756708 C Section 4 Usi...

Page 72: ...hasors 2 Toggle the diagram visibility by selecting it from the drop down menu GUID 5F3C9CC8 1AE8 4235 836F AC93E1E73708 V3 EN Figure 49 Toggling the diagram visibility Section 4 1MRS756708 C Using th...

Page 73: ...diagram by changing the zoom value GUID 690A11A9 FEC4 4558 A68F 16FBAC500E3B V3 EN Figure 50 Zooming the diagram 4 Click Freeze to stop updating the phasor diagram No updates are displayed in the dia...

Page 74: ...the phasor diagrams 4 2 14 Selecting fault records Select from the main menu Monitoring Recorded data Fault record to view a list of all available fault records The newest fault record is first on th...

Page 75: ...16 CBAC 4F6B 8853 D97D32F73A71 V1 EN Figure 52 Fault records GUID A49A6D73 2E18 48B3 9ECA 17908590688D V1 EN Figure 53 Fault record parameters 1MRS756708 C Section 4 Using the HMI 615 series 67 Operat...

Page 76: ...ensitive WHMI help provides information for example of a single parameter Move the mouse over the to display the help dialog box A070927 V4 EN Figure 54 Opening the WHMI help Section 4 1MRS756708 C Us...

Page 77: ...Disturbances and their causes can be identified by indicator LEDs Ready Start and Trip During normal operation the Ready LED is steady green Table 14 Disturbance indications LED State Description Star...

Page 78: ...fault events which are set to trigger the disturbance recorder Disturbance data is collected and stored for later viewing and analysis The disturbance recorder data can be uploaded and analyzed with P...

Page 79: ...PCM600 documentation 5 3 1 IED settings for IED functionality Function settings can be edited one by one by navigating to the individual setting values for example via the LHMI The values in other set...

Page 80: ...72...

Page 81: ...ring indication messages Indication messages and tripping data are shown in a dialog box 1 Read the indication message in the dialog box The message can indicate the starting or tripping of protection...

Page 82: ...ing 2 Press or to scroll the view 3 Press to enter or to exit a submenu With PCM600 the user can map output signals from condition monitoring related function blocks to the appropriate destinations 6...

Page 83: ...urrent Ps Seq A Positive phase sequence current Zro Seq A Zero phase sequence current Ng Seq kV Negative phase sequence voltage Ps Seq kV Positive phase sequence voltage Zro Seq kV Zero phase sequence...

Page 84: ...recordings from the IED with the PCM600 software to monitor disturbance recorder data 1 Select Main menu Disturbance records All the disturbance recorder information is listed 2 Scroll the view with o...

Page 85: ...ee PCM600 documentation 6 1 3 4 Monitoring fault records Timestamps of the fault records are shown as a list The first fault record is the newest 1 Select Main Menu Monitoring Recorded data Fault reco...

Page 86: ...ption object description and event text elements of the event are shown 3 Press or to scroll the view A071148 V3 EN Figure 60 Monitoring events 6 1 4 Remote monitoring The IED supports comprehensive r...

Page 87: ...e and you are authorized to access control operations 1 Press to open or to close the object 2 Enter the password when prompted 3 To confirm the operation select Yes and press A071170 V3 EN Figure 61...

Page 88: ...ngle line diagram 1 Select the object with or if there are more than one controllable object in the single line diagram The selected object has a square around it GUID BA9EE384 E2F7 4390 9F7B 01E76470...

Page 89: ...ress to activate the Clear view All the items that can be cleared are shown Indications and LEDs Programmable LEDs Recorded data Events Disturbance records Temperature functions Trip lockout functions...

Page 90: ...e active setting group can be changed by the IED application or manually from the menu 1 Select Main menu Settings Setting group Active group and press A071150 V3 EN Figure 66 Active setting group 2 S...

Page 91: ...d press 2 Change the options with or and press to confirm the selection GUID 7C997215 CA0C 43E7 8D8B 324E69086C35 V1 EN Figure 68 Copy group 1 into 6 6 4 1 3 Browsing and editing setting group values...

Page 92: ...tion block list is shown in the content area of the display On the left in the header you see the current setting group and on the right the menu path 5 To browse the parameters scroll the list with a...

Page 93: ...e LEDs 1 Select Main menu Configuration Programmable LEDs 2 Select a programmable LED with or 3 Press to enter the selection and to change the programmable LED mode 4 Change the mode with or and press...

Page 94: ...Autoscroll delay and press 2 Select delay time with or 3 Press to confirm the selection GUID 799BFDDC 93D0 4887 818E E7C7905F236D V1 EN Figure 73 Autoscroll delay Section 6 1MRS756708 C Operating proc...

Page 95: ...r repair or replacement actions 7 1 2 Identifying runtime errors 1 Check the error origin from the IED s supervision events Main menu Monitoring IED status Self supervision 2 Reboot the IED and rechec...

Page 96: ...indications have the highest priority on the LHMI None of the other LHMI indications can override the internal fault indication An indication about the fault is shown as a message on the LHMI The text...

Page 97: ...ard located in slot X130 Internal Fault PO relay s X100 53 Faulty Power Output relay s in card located in slot X100 Internal Fault PO relay s X110 54 Faulty Power Output relay s in card located in slo...

Page 98: ...n the RAM memory on the CPU card Internal Fault ROM error 81 Error in the ROM memory on the CPU card Internal Fault EEPROM error 82 Error in the EEPROM memory on the CPU card Internal Fault FPGA error...

Page 99: ...r 25 Error in the Report control block s Warning GOOSE contr error 26 Error in the GOOSE control block s Warning SCL config error 27 Error in the SCL configuration file or the file is missing Warning...

Page 100: ...ect Main menu Configuration General Software reset and press 2 Change the value with or and press 7 3 2 Restoring factory settings In case of configuration data loss or any other file system error tha...

Page 101: ...k the mode Check the measurement value Check the connection to trip and disturbance recorder functions Check the channel settings 7 3 4 1 Inspecting the wiring The physical inspection of wiring connec...

Page 102: ...esponding application execution until correct data is received In case of permanent faults the measurement chain should be checked to remove the origin of the faulty measurement data In case of persis...

Page 103: ...ication port The RJ 45 port supports any CAT 5 Ethernet cable but the recommendation is STP Test your PC s communication port before you go to the site Find out who to contact if you have trouble and...

Page 104: ...rs in the system for example due to a mistake in connecting the CT s measurement core to the IED CT excitation test to ensure that the CT is of the correct accuracy rating and that there are no short...

Page 105: ...inary input circuits Preferably disconnect the binary input connector from the binary input cards Check all connected signals so that both input level and polarity are in accordance with the IEDs spec...

Page 106: ...ommunication between the IED and PCM600 is independent of the used communication protocol within the substation or to the NCC It can be seen as a second channel for communication The communication med...

Page 107: ...onnected to the front interface The computer s LAN interface has to be configured to obtain the IP address automatically LAN or WAN network In TCP IP networking a LAN is often but not always implement...

Page 108: ...want to configure and then click Properties 3 Select the TCP IP protocol from the list of configured components using this connection and click Properties A071162 V1 EN Figure 76 Selecting TCP IP prot...

Page 109: ...PC with MicroSoft Windows operating system for rear communication 1 To open Network Connections click Start point to Settings click Control Panel and then double click Network Connections 2 Double cli...

Page 110: ...rotocol 4 Choose Use the following IP address Enter an IP address and a subnet mask Make sure that the IP address is unique that is not used by any other IED on the network Section 8 1MRS756708 C Comm...

Page 111: ...ard by including a new IED in the project or by entering the IED s IP address in the Object Properties window 1 Select the IED to which you want to define the IP address 2 Open the Object Properties w...

Page 112: ...ion see the communication protocol manuals and the technical manual If the protocol does not operate as expected check that other serial protocols are not using the COM port 8 5 1 1 Serial communicati...

Page 113: ...en fiber mode is used the Serial mode parameter value must be RS485 2wire In addition to setting the COM parameter a communication card with many hardware options may also require changing the jumpers...

Page 114: ...s received Frames received 0 2147483646 Basic Number of successfully received complete frames Frames discarded 0 2147483646 Basic Number of frames discarded Frames transmitted 0 2147483646 Basic Numbe...

Page 115: ...ounters Counter Function CD Lost In RS 232 handshake mode characters are to be received as long as Carrier Detect CD signal is active This counter is incremented if the CD signal is lost during recept...

Page 116: ...rt settings 1 Select Main menu Configuration Communication COM1 or COM2 2 Define the settings for the serial port It is possible to change the general serial communication parameters per port Select f...

Page 117: ...he WHMI does not respond 5 1 Clear the browser of cached pages 5 2 Logout and log back in 6 Install a TCP packet sniffer to see what is happening on the network 7 Clear the ARP table 8 See the IED s t...

Page 118: ...is stored in the non volatile memory if you are logged in and authorized to control the IED After an auxiliary power failure the contrast is restored 8 5 2 3 Changing display symbols Use the keypad to...

Page 119: ...to determine the correct date for the DST shift every year The UTC time is used to set the DST 1 Set the DST on day and DST off day parameters to define on which week day the time shift occurs 2 Set t...

Page 120: ...ift is not on the same date every year To disable the DST set the DST offset parameter to 0 min 8 5 3 Setting IED parameters 8 5 3 1 Defining setting groups Selecting a setting group for editing 1 Sel...

Page 121: ...ist with and and to select a function block press To move back to the list press The function block list is shown in the content area of the display On the left in the header you see the current setti...

Page 122: ...The active setting group is indicated with an asterisk Activating a setting group IED settings are planned in advance for different operation conditions by calculating setting values to different set...

Page 123: ...er to document the changes you make 8 5 3 2 IED parametrization IED parameters are set via the LHMI WHMI or PCM600 Setting parameters need to be calculated according to the electrical network conditio...

Page 124: ...alue with or and press again For CTs the secondary current and primary current need to be set to the correct values For VTs the secondary voltage and primary voltage need to be set to the correct valu...

Page 125: ...s flashing 8 6 2 Testing the digital I O interface To activate or deactivate for example a digital output 1 Select Main menu Tests Binary Outputs X100 PSM X100 Output 1 and press 2 Select the value wi...

Page 126: ...shown on the LHMI See Technical Manual for internal relay fault output contact location Differing from real internal fault situation the other output contacts are not released and locked during the t...

Page 127: ...LCT indication is cleared in the same way as other indications If PCM600 is not connected to the IED the indication is seen again after the IED s reboot A071266 V2 EN Figure 90 LCT indication The num...

Page 128: ...120...

Page 129: ...lution DST Daylight saving time EEPROM Electrically erasable programmable read only memory EMC Electromagnetic compatibility Ethernet A standard for connecting a family of frame based computer network...

Page 130: ...nally used for communication in PLCs and RTU devices Modbus ASCII Modbus link mode Character length 10 bits Modbus RTU Modbus link mode Character length 11 bits Modbus TCP IP Modbus RTU protocol which...

Page 131: ...inal only one conductor is represented SLD Single line diagram SMT Signal Matrix tool in PCM600 ST Connector type for glass fibre cable STP Shielded twisted pair SVG Scalable vector graphics SW Softwa...

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Page 136: ...Contact us ABB Oy Distribution Automation P O Box 699 FI 65101 VAASA Finland Phone 358 10 22 11 Fax 358 10 22 41094 www abb com substationautomation 1MRS756708 C Copyright 2010 ABB All rights reserved...

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