Reyrolle Protection Devices. 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay

Transcription

1 Reyrolle Protection Devices 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay

2 2018 Siemens Protection Devices Limited 2

3 7SR45 Argus Contents Contents Technical Manual Chapters 1. Description of Operation 2. Settings & Instruments 3. Performance Specifications 4. Data Communications Definitions 5. Installation 6. Commissioning and Maintenance 7. Applications Guide The copyright and other intellectual property rights in this document, and in any model or article produced from it (and including any registered or unregistered design rights) are the property of Siemens Protection Devices Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent. While the information and guidance given in this document is believed to be correct, no liability shall be accepted for any loss or damage caused by any error or omission, whether such error or omission is the result of negligence or any other cause. Any and all such liability is disclaimed Siemens Protection Devices Limited

4 Chapter 1-7SR45 Description of Operation 7SR45 Description of Operation Document Release History This document is issue 2018/09. The list of revisions up to and including this issue is: 2018/09 Eighth Issue 2018/06 Seventh Issue 2018/04 Sixth Issue 2017/08 Fifth Issue 2017/01 Fourth Issue 2016/10 Third Issue 2016/09 Second Issue 2015/08 First Issue Software Revision History 2018/ H80001R2b-1b Third Release 2018/ H80001R2a-1a Second Release 2017/ H80001R1e-1a Software maintenance to suit customer requirements 2017/ H80001R1d-1a Protection function 50, 50N, 50G setting range change to 0.2xI n to 20xI n in step of 0.1xI n. Protection function 50, 50N, 50G reset ratio changed to 91% for setting below 1xI n and 95% for setting above 1xI n. 2016/ H80001R1c-1a Software maintenance to suit customer requirements 2016/ H80001R1b-1a Faster response times on 1 phase (t+100ms max) in 0.2 to 0.3 ranges. IRF functionality. 2015/ H80001R1a-1a First Release Hardware Revision History 2018/06 7SR450/FF Third Release (with reduced front cover and housing height) 2018/04 7SR450/EE Second Release (with Aux. Power supply, remote flag and local flag, RS 485, additional AC/DC BIs and BOs) 2017/02 7SR450/DD Hardware maintenance 2016/09 7SR450/CC Circuit changes to improve signal conditioning 2015/08 7SR450/BB First Release The copyright and other intellectual property rights in this document, and in any model or article produced from it (and including any registered or unregistered design rights) are the property of Siemens Protection Devices Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be reproduced from this document unless Siemens Protection Devices Limited consent. While the information and guidance given in this document is believed to be correct, no liability shall be accepted for any loss or damage caused by any error or omission, whether such error or omission is the result of negligence or any other cause. Any and all such liability is disclaimed Siemens Protection Devices Limited

5 Chapter 1-7SR45 Description of Operation Contents Open Source Software... 6 Section 1: Introduction Current Transformer Circuits External Resistors Description Ordering Options Functional Diagram Terminal Diagram Section 2: Hardware Description General Front Fascia Front Fascia with Flag Output Front Fascia without Flag Output Power Supply Unit (PSU) Connectors Connectors for Self and Dual Powered Relay Variant Operator Interface Relay Information Liquid Crystal Display (LCD) Keypad Light Emitting Diode (LED) Local Flag Home Screen Password Protection Software Version Menu Alert Screen Fault Alert (Trip Alert) Alarm Alert Info Alert Parameter Edit Screen Section 3: Protection Functions (50, 51, 50N, 51N, 50G, 51G, 50LC) Instantaneous Overcurrent Protection (50) Time Delayed Overcurrent Protection (51) Instantaneous Derived Earth Fault Protection (50N) Time Delayed Derived Earth Fault Protection (51N) Instantaneous Measured Earth Fault Protection (50G) Time Delayed Measured Earth Fault Protection (51G) Switch-On-To-Fault (50LC/SOTF) General Alarm Reset LED, Trip Flag Indication and Binary Outputs Reset through Binary Input Reset using Reydisp Software TEST/RESET Key Reset through rear communication protocol Current Inputs Binary Inputs Binary Outputs Binary Output Matrix Binary Output Configuration Binary Output Operations BO Trip/Reset on Battery/USB BO Trip/Reset on CT Input or Auxiliary Voltage Pulse Output Remote Flag Output Siemens Protection Devices Limited Chapter 1 Page 2 of 49

6 Chapter 1-7SR45 Description of Operation 3.16 Modes of Operation Auxiliary Voltage CT Input USB Battery Sleep Mode Low Battery Status Indication Maintenance Mode Output Test Self Monitoring Internal Relay Failure (IRF) Data Storage Fault Records (Trip Log) Event Records (Event Log) Real Time Clock Operating Mode Settings Groups Password Feature Battery Firmware Update List of Figures Figure 1-1 Functional Diagram of 7SR45 Argus Relay... 9 Figure 1-2 Terminal Diagram of Self Powered (7SR4501-xGA10-1AA0) and (7SR4503- xga10-1aa0) Non-Directional Overcurrent and Earth Fault Relay without Flag Figure 1-3 Terminal Diagram of Self Powered (7SR4501-xGB10-1AA0) and (7SR4503- xgb10-1aa0) Non-Directional Overcurrent and Earth Fault Relay with Flag Figure 1-4 Terminal Diagram of Dual Powered (7SR4501/7SR4503-x[H/J] A20-1AA0) Non- Directional Overcurrent and Earth Fault Relay without Flag Figure 1-5 Terminal Diagram of Dual Powered (7SR4502/7SR4504) Non-Directional Overcurrent and Earth Fault Relay with Flag Figure 2-1 7SR45 Argus Relay Front Fascia with Flag Output Figure 2-2 7SR45 Argus Relay Front Fascia without Flag Output Figure 2-3 7SR45 Argus Relay Connectors with 4 BI and 4 BO Figure 2-4 7SR45 Argus Relay Connectors with 2 BI and 2 BO Figure 2-5 7SR4501/7SR4503 Argus Self Powered Relay LED Indication Label Figure 2-6 7SR4502/7SR4504 Argus Dual Powered Relay LED Indication Label (With Flag) Figure 2-7 Warning Symbols Figure 2-8 Relay LCD Figure 3-1 Logic Diagram: Instantaneous Overcurrent Element Figure 3-2 Logic Diagram: Time Delayed Overcurrent Element Figure 3-3 Logic Diagram: Instantaneous Derived Earth Fault Element Figure 3-4 Logic Diagram: Time Delayed Derived Earth Fault Protection Figure 3-5 Logic Diagram: Instantaneous Measured Earth-fault Element Figure 3-6 Logic Diagram: Time Delayed Measured Earth Fault Element Figure 3-7 Logic Diagram: 50LC Overcurrent Element Figure 3-8 Operating Time for Switch-On-To-Fault with Binary Outputs Figure 3-9 Operating Time for Switch-On-To-Fault with Pulse Output Figure 3-10 Reset LEDs Outputs: Reydisp Software Input Matrix Figure 3-11 Reset Flags Figure 3-12 Binary Input Logic Figure 3-13 Binary Output Logic Figure 3-14 Sensitivity for Single Phase Fault with Binary Outputs Figure 3-15 Sensitivity for Single Phase Fault with Pulse Output Siemens Protection Devices Limited Chapter 1 Page 3 of 49

7 Chapter 1-7SR45 Description of Operation Symbols and Nomenclature The following notational and formatting conventions are used within the remainder of this document: Setting Menu Location MAIN MENU>SUB-MENU Setting: Elem name -Setting Setting value: value Alternatives: [1st] [2nd] [3rd] 2018 Siemens Protection Devices Limited Chapter 1 Page 4 of 49

8 Chapter 1-7SR45 Description of Operation! DANGER Danger of explosion of the battery. Noncompliance with the safety instructions means that death, severe injuries, or considerable material damages can occur. Do not throw the lithium batteries into a fire.! WARNING Warning about battery disposal. Noncompliance with the safety instructions means that severe injuries or considerable material damages can occur. When discharged, or when properly secured against short-circuit, lithium batteries can be disposed off through retailers or at depots run by competent organizations. NOTE: 7SR45 Argus Relay with 1 contained lithium metal cylindrical cell (0.6 g lithium content) and 1 lithium metal button cell meets the preconditions of special provision (SP)188 of the UN Recommendations on the Transport of Dangerous Goods, 17 th revised edition and is classified according to: ADR/RID/ADN/IMDG-Code: UN 3091 Lithium metal batteries contained in equipment, class 9, preconditions of SP 188 met. ICAO-TI/IATA-DGR: UN 3091 Lithium metal batteries contained in equipment, class 9, preconditions of section II of packing instruction (PI) 970 met. Do not transport the 7SR45 Argus Relay when it is activated. Before transportation, ensure that the 7SR45 Argus Relay is not in the battery power mode and paper strip is inserted between the battery clip and battery. The lithium metal cells for 7SR45 Argus Relay (as a spare part) are also subject to the special provision (SP)188 mentioned above, but classified according to: ADR/RID/AND/IMDG-Code: UN 3090 Lithium metal batteries, class 9, preconditions of SP 188 met. ICAO-TI/IATA-DGR: UN 3090 Lithium metal batteries, class 9, preconditions of section IB or II of packing Instruction (PI) 968 met Siemens Protection Devices Limited Chapter 1 Page 5 of 49

9 Chapter 1-7SR45 Description of Operation Open Source Software The product contains, among other things, Open Source Software developed by third parties. The Open Source Software used in the product and the license agreements concerning this software can be found in the Readme_OSS. These Open Source Software files are protected by copyright. Your compliance with those license conditions will entitle you to use the Open Source Software as foreseen in the relevant license. In the event of conflicts between Siemens license conditions and the Open Source Software license conditions, the Open Source Software conditions shall prevail with respect to the Open Source Software portions of the software. The Open Source Software is licensed royalty-free. Insofar as the applicable Open Source Software License Conditions provide for it you can order the source code of the Open Source Software from your Siemens sales contact - against payment of the shipping and handling charges - for a period of at least 3 years since purchase of the Product. We are liable for the Product including the Open Source Software contained in it pursuant to the license conditions applicable to the Product. Any liability for the Open Source Software beyond the program flow intended for the Product is explicitly excluded. Furthermore any liability for defects resulting from modifications to the Open Source Software by you or third parties is excluded. We do not provide any technical support for the Product if it has been modified Siemens Protection Devices Limited Chapter 1 Page 6 of 49

10 Chapter 1-7SR45 Description of Operation Section 1: Introduction This manual is applicable to the following relay: 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay General Safety Precautions 1.1 Current Transformer Circuits The secondary circuit of a live CT must not be open circuited. Non-observance of this precaution can result in injury to personnel or damage to equipment. 1.2 External Resistors Where external resistors are connected to the relay circuitry, these may present a danger of electric shock or burns, if touched. 1.3 Description 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay is developed using the latest generation of hardware technology and is available in multiple variants depending on the following: CT ratings (1 A/5 A) Auxiliary Power supply Communication configuration Binary Input Binary Output Local/remote Flag Indicator 7SR45 Argus is a member of Siemens Reyrolle protection devices Argus product family. 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay is housed in a 4U high, size 4 non draw-out case and provides protection, monitoring, and instrumentation functions with integrated input and output logic and fault reports. The relay functionality can be configured via a front USB port for local PC connection or rear electrical RS485 (optional) port for remote connection. By using the Reydisp Evolution software, the user can update the settings and view the fault records (trip log) and the event records (event log). 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay support the IEC and Modbus communication protocols based on the ordering option. 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay can indicate the trip with local and remote flag indicator based on the ordering option. NOTE: In this Technical Manual, the 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay will be referred as 7SR45 Argus Relay Siemens Protection Devices Limited Chapter 1 Page 7 of 49

11 Chapter 1-7SR45 Description of Operation 1.4 Ordering Options Product description Variants Order No SR45 Argus 7 S R A A 0 Nondirectional Overcurrent and Earth Fault Relay Case, I/O and fascia Size 4 Moulded Case, 4 CT 1), 2 BI/2 BO, pulse output, 9 LEDs 1 G A/B Size 4 Moulded Case, 4 CT 1), 2 BI/2 BO, pulse output, 9 LEDs 1 H/J A Size 4 Moulded Case, 4 CT 1), 4 BI/4 BO, pulse output, 9 LEDs 2 H/J B Size 4 Moulded Case (Height Reduced), 4 CT 1),2 BI/2 BO, pulse output, 9 LEDs 3 G A/B Size 4 Moulded Case (Height Reduced), 4 CT 1),2 BI/2 BO, pulse output, 9 LEDs 3 H/J A Size 4 Moulded Case (Height Reduced), 4 CT 1),4 BI/4 BO, pulse output, 9 LEDs 4 H/J B Measuring Input 1 A, 50 Hz/60Hz 1 5 A, 50 Hz/60Hz 2 Auxiliary Voltage Self Powered (CT Powered : BI Threshold 19 V DC) Dual powered (CT Powered + Aux. Powered : 24 V to 60 V DC, BI threshold 19 V DC) Dual powered (CT Powered + Aux. Powered : 60 V to 240 V AC/DC, BI threshold 88 V AC/DC) G H J Front Fascia Standard Version Standard Version - with Trip Flag Indicator A B Communication Options Front port : USB Front Port : USB and Rear Port : RS-485 supporting IEC and Modbus RTU (user selectable setting) 1 2 Protection Function Packages - Standard version 50 Instantaneous phase fault overcurrent 50G/50N Instantaneous earth fault 51 Time delayed phase fault overcurrent 51G/51N Time delayed earth fault 50LC/SOTF Switch-On-To-Fault A Additional functionality No additional functionality A 1) 4CT is configured as 3PF + EF Use the following ordering information to order 7SR45 Argus Relay battery spares. Table 1-1 Battery Spares Ordering Options Variants 7XG1900-1AA00-0AA0 7XG1900-2AA00-0AA0 7XG1900-3AA00-0AA0 Description Main Battery CR123A RTC Battery CR1632 Main Battery CR123A + RTC Battery CR1632 NOTE: If possible, it is recommended to procure the battery as per the Table 1-1 from the local supplier or local market Siemens Protection Devices Limited Chapter 1 Page 8 of 49

12 Chapter 1-7SR45 Description of Operation 1.5 Functional Diagram 7SR45 IL1 (I A ) 50LC/ SOTF 50 (x2) 51 IL2 (I B ) 50LC/ SOTF 50 (x2) 51 IL3 (I C ) 50LC/ SOTF 50 (x2) 51 50N (x2) 51N IL4 (I G ) 50G (x2) 51G Figure 1-1 Functional Diagram of 7SR45 Argus Relay 2018 Siemens Protection Devices Limited Chapter 1 Page 9 of 49

13 1.6 Terminal Diagram Chapter 1-7SR45 Description of Operation The 7SR45 Argus Relay is housed in a non draw-out 4U size 4 case. The rear connection comprises of user-friendly pluggable type terminals: Binary Input (BI) Binary Output (BO) Pulse Output (PO) Fixed Terminal Current Transformer (CT) (non-pluggable) Remote Flag Indicator RS485 Communication Port Auxiliary Power Supply 7SR4501/7SR4503 Terminal Label X1 +ve -ve +ve -ve BI 1 BI 2 X5 IL1 1A/5A 1A/5A NO 1 X2 IL2 COM NC BO 1 BO 2 IL3 1A/5A X3 -ve +ve PO 1A/5A 6 7 IL4 8 GND NOTES Items shown in BOLD are ordering options Figure 1-2 Terminal Diagram of Self Powered (7SR4501-xGA10-1AA0) and (7SR4503-xGA10-1AA0) Non-Directional Overcurrent and Earth Fault Relay without Flag 2018 Siemens Protection Devices Limited Chapter 1 Page 10 of 49

14 Chapter 1-7SR45 Description of Operation 7SR4501/7SR4503 Terminal Label X2 +ve -ve +ve -ve BI 1 BI 2 X1 IL1 1A/5A 1A/5A NO 6 COM 7 NC 8 BO 1 IL BO 2 1A/5A 5 11 IL ve -ve PO 1A/5A 6 7 GND ve -ve FO IL4 8 NOTES Items shown in BOLD are ordering options Figure 1-3 Terminal Diagram of Self Powered (7SR4501-xGB10-1AA0) and (7SR4503-xGB10-1AA0) Non-Directional Overcurrent and Earth Fault Relay with Flag X2 1 +ve 2 -ve 3 +ve 4 -ve BI 1 BI 2 X1 IL1 1A/5A 1 2 7SR4501/7SR4503 Terminal Label 5 1A/5A X4 TERM A/+ GND B/- RS 485 NO 6 COM 7 NC BO 1 BO 2 IL2 IL3 1A/5A L X ve -ve PO 1A/5A N 3 E GND ve -ve FO IL4 8 NOTES: Items shown in BOLD are ordering options Figure 1-4 Terminal Diagram of Dual Powered (7SR4501/7SR4503-x[H/J] A20-1AA0) Non-Directional Overcurrent and Earth Fault Relay without Flag 2018 Siemens Protection Devices Limited Chapter 1 Page 11 of 49

15 Chapter 1-7SR45 Description of Operation 7SR4502/7SR4504 Terminal Label ve - ve +ve -ve X5 BI 3 BI X2 +ve -ve +ve - ve BI 1 BI 2 X1 IL1 1A/5A 1A/5A X4 TERM A/+ GND B/- RS485 X6 NO 1 COM NC NO 6 COM BO 3 NC BO BO 1 BO 2 IL2 IL3 1A/5A L N E X3 GND ve - ve +ve - ve PO FO IL4 1A/5A NOTES Items shown in BOLD are ordering options Figure 1-5 Terminal Diagram of Dual Powered (7SR4502/7SR4504) Non-Directional Overcurrent and Earth Fault Relay with Flag The CT terminals are suitable for ring type lug connection and to provide a secure and reliable termination Siemens Protection Devices Limited Chapter 1 Page 12 of 49

16 Chapter 1-7SR45 Description of Operation Section 2: Hardware Description 2.1 General The structure of the 7SR45 Argus relay is based on the compact hardware platform. The 7SR45 Argus relay is supplied in a non draw-out 4U high size 4 case. The hardware design provides a commonality between the products and components across the range of relays. The 7SR45 Argus Relay is assembled from the following modules: 1. Front Fascia with 9 non-programmable LEDs 2. Processor Module 3. Current Analogue 4. Input Module 5. Output Module 6. Power Supply Module 7. Rear Port Communications Module (Available with dual powered model) 2.2 Front Fascia The front fascia is an integral part of the relay and allows the user to access all the push buttons and performs the setting changes and control actions. The fascia provides an option to reset the fault data display, latched binary outputs, and LEDs by using the TEST/RESET button. The front fascia contains predefined LED list which provides the information about the LED indicators Front Fascia with Flag Output Figure 2-1 7SR45 Argus Relay Front Fascia with Flag Output 2018 Siemens Protection Devices Limited Chapter 1 Page 13 of 49

17 Chapter 1-7SR45 Description of Operation Front Fascia without Flag Output Figure 2-2 7SR45 Argus Relay Front Fascia without Flag Output 2.3 Power Supply Unit (PSU) The relay is supplied with the following nominal power supply ranges: 60 V to 240 V AC/DC power supply (BI threshold - 88 V AC/DC) 24 V to 60 V DC power supply (BI threshold -19 V DC) The power supply module is equipped with 2 or 4 binary inputs and binary outputs based on the ordering options. The PSU also consists of one RS485 communication interface (half duplex) for communicating with RTUs and parameterization of relays via remote locations. For AC connections, the auxiliary supply is made with the live connection to positive terminal and neutral connection to negative for consistency and safety. If the power supply voltage levels are falling below the relay minimum operate level, the 7SR45 Argus relay power will automatically switch over to CT power through phase CT currents Siemens Protection Devices Limited Chapter 1 Page 14 of 49

18 Chapter 1-7SR45 Description of Operation 2.4 Connectors In 7SR45 Argus Relay, all the connectors are pluggable type except the CT connectors. The relay consists of the following connectors and the connector terminals are designated suitably: Auxiliary power supply Remote flag output Pulse output Binary inputs Binary outputs RS485 connector Connectors for Self and Dual Powered Relay Variant The power supply module is equipped with additional two numbers of binary input and binary outputs. It also consists of RS485 communication port at the rear side. Current Inputs Additional Binary Inputs Additional Binary Outputs Rear Communication Port Binary Inputs, Binary Outputs, Flag Output, Pulse Output Auxiliary Power Supply Figure 2-3 7SR45 Argus Relay Connectors with 4 BI and 4 BO 2018 Siemens Protection Devices Limited Chapter 1 Page 15 of 49

19 Chapter 1-7SR45 Description of Operation Current Inputs Binary Inputs, Binary Outputs, Flag Output, Pulse Output Figure 2-4 7SR45 Argus Relay Connectors with 2 BI and 2 BO 2.5 Operator Interface The operator interface is designed to provide a user-friendly method of entering the settings and retrieving data from the relay. The rating label is located on the housing and provides more technical information about the 7SR45 Argus Relay. Figure 2-5 7SR4501/7SR4503 Argus Self Powered Relay LED Indication Label 2018 Siemens Protection Devices Limited Chapter 1 Page 16 of 49

20 Chapter 1-7SR45 Description of Operation Figure 2-6 7SR4502/7SR4504 Argus Dual Powered Relay LED Indication Label (With Flag) 2.6 Relay Information The rating label contains the following product Information: Product name Auxiliary voltage range Rated burden Nominal current rating Rated frequency Binary input supply rating MLFB ordering code, with hardware version suffix Serial number Where, GF Goa factory YY Year of manufacturing MM Month of manufacturing XXXXXX Serial number of the relay 2018 Siemens Protection Devices Limited Chapter 1 Page 17 of 49

21 For safety reasons, the following warning symbols are displayed on the label. Chapter 1-7SR45 Description of Operation Figure 2-7 Warning Symbols 7SR45 Argus Relay consists of the following Human machine interface (HMI): 1. LCD 2. Keypads 3. LED 4. Trip flag indicator 5. USB 6. Battery Cover Liquid Crystal Display (LCD) The 7SR45 Argus Relay consists of 16x2 LCD to display the settings, instrumentation, and fault data. By using the LCD, the user can view or edit a configuration parameter. The LCD allows the user to view the following: Real time status of relay such as BI and BO Battery profile Auxiliary power status Primary and secondary current values of each phase and earth General alarms LCD displays the stored fault information to the user. When any fault condition occurs, the relay displays the latest fault information on LCD. General Alarms are user defined text messages displayed on the LCD when mapped to binary inputs. Up to four general alarms can be programmed, each triggered from one or more input. Each general alarm will also generate an event. The backlight TURNS ON automatically if the 7SR45 Argus Relay is powered on with phase CT input and the current is more than 0.4xI n (single phase) or 0.14xI n (three phase). If the 7SR45 Argus Relay is energized with current less than the defined limits, the backlight does not TURN ON. If the 7SR45 Argus Relay is powered on by inserting a USB cable, the backlight TURNS ON automatically. The backlight can be turned off manually by pressing the backlight key. The backlight TURNS OFF automatically to save energy if the user does not perform any activity in the HMI for more than 30 seconds. In the phase CT power mode, the 7SR45 Argus Relay periodically monitors that sufficient current is available to TURN ON the backlight. In the USB or battery power mode, if the backlight is already TURNED ON and if the phase CT input is provided, the backlight TURNS OFF due to the switching of power mode from USB or Battery to CT power. The backlight can be TURNED ON again if sufficient current is available. For more information about power source, refer to Modes of Operation Siemens Protection Devices Limited Chapter 1 Page 18 of 49

22 Chapter 1-7SR45 Description of Operation Figure 2-8 Relay LCD Keypad The 7SR45 Argus Relay keypad consists of 5 standard keys for navigation and for editing the values. The standard keys are used to navigate the menu structure and configure the relay functions. The 2 additional keys are available for LCD backlight and battery mode. The keys are used for the following functions: To display and edit the relay settings To display the relay instrumentation and fault data To reset the output relays and LEDs This push-button is used to navigate the menu structure or to increase the parameter value in the edit mode. This push-button is used to navigate the menu structure or to decrease the parameter value in the edit mode. This push-button is used to reset the fault indication on the fascia. This push-button is also used for selecting the menu or selecting parameter values in the edit mode. By using this push-button, the user can acknowledge the LEDs, binary output, and trip flag indication. This push-button is used for selecting the parameter or confirming the values. The ENTER push-button is used to initiate and accept the setting changes. Press ENTER to edit the parameter setting. The setting value flashes and can be changed by using the or keys. This push-button is used to return the relay display to its initial status or one level up in the menu structure. Press CANCEL to return to the previous menu or to cancel the value. This push-button is used to reject any alterations to a setting while in the edit mode. Press CANCEL key repeatedly to return to the Relay Identifier screen. This push-button is used to power-on and power-off the relay with battery power when the auxiliary power, CT power, and USB power are not available. This push-button is used to TURN ON and TURN OFF the backlight Siemens Protection Devices Limited Chapter 1 Page 19 of 49

23 Chapter 1-7SR45 Description of Operation Light Emitting Diode (LED) Indication The 7SR45 Argus relay consists of 9 non-programmable LEDs. LED indicates the operating status of the relay such as TRIP READY and PICKUP. The pre-defined LED functions are: Table 2-1 LED Functions LEDs Predefined Names Indication Color Functions LED 1 PROT. HEALTHY GREEN Indicates the relay protection function in a healthy state LED 2 TRIP RED The trip indication for the phase/earth faults LED 3 PICKUP AMBER The pickup indication for the phase/earth faults LED 4 IL1 / A RED The pickup indication for phase A fault LED 5 IL2 / B RED The pickup indication for phase B fault LED 6 IL3 / C RED The pickup indication for phase C fault LED 7 IE / E RED The pickup indication for Derived/Measured Earth fault LED 8 TRIP READY GREEN The sufficient energy available for tripping LED 9 LOW BATTERY AMBER The battery voltage is less than the operating level Protection Healthy LED The steady illumination of Protection Healthy LED indicates that the required CT current 0.20xIn (minimum phase current) in single phase or 0.10xIn (minimum phase current) in three phases or auxiliary power supply is applied to the relay and the relay is functioning healthy Trip Ready LED The steady illumination of Trip Ready LED indicates that required CT current 0.20xIn (minimum phase current) in single phase or 0.10xIn (minimum phase current) in three phases or auxiliary power supply is applied to the relay and the relay is having sufficient energy to trip through the impulse output Low Battery LED The low battery LED indicates when the battery voltage falls below the sufficient operating voltage Local Flag An electromechanical bi-stable flag is provided in the front fascia to indicate the trip condition. The status of flag is GREEN in normal condition and turns RED during the trip condition. NOTE: The energy required to show the trip indication is provided by the auxiliary voltage or phase currents. The flag indicates a trip indication when any protection function operates or any binary inputs are mapped to trip pulse output. The trip indication is retained even in the absence of auxiliary voltage and phase currents. The trip indication can be reset with any power mode. Refer to Modes of operation Siemens Protection Devices Limited Chapter 1 Page 20 of 49

24 2.7 Home Screen Chapter 1-7SR45 Description of Operation After the 7SR45 Argus relay is powered on, the user can access or navigate to other menus from the Home Screen. The following operations can be performed from the home screen: ENTER READ UP READ DOWN CANCEL Press ENTER key to navigate to SETTING MODE. Press READ UP key to navigate to MAINTENANCE TAB under SETTING MODE. Press READ DOWN key to navigate to SETTING MODE. Press CANCEL key to navigate back to the Home screen. TEST/RESET Press TEST/RESET key to reset the local flag and the LEDs. CANCEL+TEST/RESET 2.8 Password Protection Press CANCEL+TEST/RESET key to navigate to SOFTWARE VERSION. The 7SR45 Argus relay allows the user to set the password via SETTING MODE > SYSTEM CONFIG > PASSWORD. The length of the password must be 4 characters. NOTE: Only alphanumeric and 3 special characters such as +,, and / are allowed. The user password can be disabled by configuring as NONE. From the parameter view screen, the user enters the password and presses ENTER for validation. If the entered password is valid, the next screen appears. If the password is invalid, LCD displays the password retry screen again. After the successful log on and editing of parameter, password prompt screen does not appear until the log on expires. If the user does not perform any operation for more than 1 minute, the login expires and unsaved settings will be discarded. 2.9 Software Version Menu The software version menu can be viewed by holding the CANCEL key and followed by pressing of TEST/RESET key on Home Screen and then releasing both the keys simultaneously. The user can view the software information by pressing or key. The software version menu contains the following information: Firmware Art No. Build Date Build Time Serial No MLFB Product Name Product Art No The firmware article number installed in the relay The date of software version build The time of software version build The serial number of the relay MLFB number of the relay Product name for display Unique number of the product assigned by SIEMENS 2018 Siemens Protection Devices Limited Chapter 1 Page 21 of 49

25 Chapter 1-7SR45 Description of Operation 2.10 Alert Screen Fault Alert (Trip Alert) When any fault is detected by the relay, LCD pops-up the fault alert. Any previous alert pop-up messages are updated or replaced by the latest message Alarm Alert Alarm alert appears when any binary input is configured for general alarm and it is triggered Info Alert Info alert displays the required information to the user. Info alert will appear for 2 seconds and the alert disappears automatically. Table 2-2 Info Alert Info Alert Description This alert appears during the edit mode and the edited parameter value blinks on the LCD. After 15 s of inactivity time, the edited value of the parameter will be discarded. This alert appears when the fault flags are reset and LED test is performed. This alert appears when the fault flags are reset. This alert appears when reset of the fault flag is failed due to the presence of fault current and the fault persists. This alert appears when reset of the fault flag is failed due to the presence of fault current or due to the presence of a BI signal during maintenance. This alert appears when the user connects to the USB host. Enter the password twice for confirmation or changing a password. This alert message appears when the password does not match with the previously typed password. This alert appears when the password entered by the user contains any special characters other than + and - or / when changing the password. This alert appears when the user selects to clear the fault or event records and the operation is successful. This alert appears when the relay is powered on in the battery mode. This alert appears when the relay goes to sleep mode. This alert appears when there is insufficient energy to perform the following actions: Turn on backlight To operate or reset the binary outputs This alert appears when the user selects to clear the fault records without acknowledging the latest fault by resetting the flag. This alert appears when the relay is powered by phase CT. This alert appears when the relay is powered by auxiliary power supply Siemens Protection Devices Limited Chapter 1 Page 22 of 49

26 2.11 Parameter Edit Screen 7SR45 Argus Relay allows the user to edit the parameter value in the LCD. To edit any parameter, follow the procedure: 1. From the Relay Identifier screen, navigate to the Parameter screen. 2. In the Parameter screen, press ENTER key to display the edit screen. 3. In the Edit Screen, the user can edit the parameter value in the editable field. 4. Press key and key to select the valid value. 5. Press ENTER to save the parameter value. To discard the parameter value, press the CANCEL key. 6. Press CANCEL until the Save and Restart pop-up screen is displayed. 7. Press ENTER to save the configuration in memory. Chapter 1-7SR45 Description of Operation 2018 Siemens Protection Devices Limited Chapter 1 Page 23 of 49

27 Chapter 1-7SR45 Description of Operation Section 3: Protection Functions (50, 51, 50N, 51N, 50G, 51G, 50LC) 3.1 Instantaneous Overcurrent Protection (50) Two Instantaneous overcurrent elements are provided in the 7SR45 Argus Relay. 50-1, 50-2 Each instantaneous element (50-n) has independent settings. 50-n Setting for pick-up current and 50-n Delay definite time delay. Operation of the instantaneous overcurrent elements can be inhibited by assigning binary inputs. Inhibit 50-n A binary input. Gn 50-n Enabled Disabled Inhibit 50-n & c Gn 50-n Setting 1 General Pickup > Gn 50-n Delay > 1 50-n Gn 50/51 Measurement > IL1 IL2 IL3 Figure 3-1 Logic Diagram: Instantaneous Overcurrent Element Table 3-1 Instantaneous Overcurrent Protection (50-n) Parameters Description Default Value Min Max Step Change Gn 50-n Element 50-n Block Disabled Gn 50-n Setting Pick-up current 1 0.2xI n 20xI n s < 20 s 0.01 Gn 50-n Delay Delay time 0 20 s < 100 s s 600 s 1 NOTE: In a single-phase condition, it is recommended to use 50-n Setting 0.3xIn or higher Siemens Protection Devices Limited Chapter 1 Page 24 of 49

28 3.2 Time Delayed Overcurrent Protection (51) One time delayed overcurrent element is provided in the 7SR45 Argus Relay n Setting sets the pick-up current level. Chapter 1-7SR45 Description of Operation A total of 7 shaped characteristics are provided from IEC and ANSI standards. An inverse definite minimum time (IDMT) characteristic is selected using 51-n Char. A time multiplier is applied to the characteristic curves using the 51-n Time Mult setting. Alternatively, a Definite Time Lag (DTL) can be chosen using 51-n Char. When Definite Time Lag (DTL) is selected the time multiplier is not applied and the 51-n Delay (DTL) setting is used instead. The 51-n Reset setting can apply a definite time delayed reset or when the operation is configured as an IEC or ANSI and if the reset is selected as (IEC/ANSI) DECAY reset, the associated reset curve will be used. A minimum operate time for the characteristic can be set using 51-n MinOperate setting. A fixed additional operate time can be added to the characteristic using 51-n Follower setting. Operation of the time delayed overcurrent elements can be inhibited by assigning binary inputs. Inhibit 51-n A binary input. Gn 51-n Element Enabled Disabled Inhibit 51-n & Gn 51-n Setting Gn 51-n Char Gn 51-n Time Mult Gn 51-n Delay (DTL) Gn 51-n MinOperate Gn 51-n Follower Gn 51-n Reset c c Pickup trip 1 General Pickup c Pickup trip Gn 50/51 Measurement c Pickup trip 1 51-n IL1 IL2 IL3 Figure 3-2 Logic Diagram: Time Delayed Overcurrent Element 2018 Siemens Protection Devices Limited Chapter 1 Page 25 of 49

29 The following are the 51-n supported Curve Characteristic: DTL, IEC-NI, IEC-VI, IEC-EI, IEC-LTI, ANSI-MI, ANSI-VI, ANSI-EI Chapter 1-7SR45 Description of Operation Operating time for IEC : t op = K I α Is ( ) 1 X Tm Operating time for IEEE/ANSI : t op= A I P Is ( ) + B 1 X Tm Reset time for IEC/IEEE/ANSI R : 1 I Is n Tm t r = 1 R I n ( ) Is X Tm Table 3-2 Constants for operating and reset curve characteristics Operating time Reset time Curve type K α P A B R n IEC-NI IEC-VI IEC-EI IEC-LTI IEEE/ANSI - MI IEEE/ANSI - VI IEEE/ANSI - EI Where, I - Fault current Magnitude I s - Pickup setting Tm - Time multiplier Table 3-3 Time Delayed Overcurrent Protection (51-n) Parameters Description Default Value Min Max Step Change Gn 51-n Element 51-1 Block Disabled Gn 51-n Setting Pick-up current 1xI n 0.2xI n 2.0xI n 0.01 Gn 51-n Char Characteristics IEC NI Gn 51-n Time Mult Gn 51-n Delay Gn 51-n Min Operate Time Multiplier (other than DTL) Delay (Applicable only for DTL) Minimum Operate Time s 0 s 15 s s 0 s 20 s 0.01 Gn 51-n Follower Follower DTL 0 s 0 s 20 s 0.01 Gn 51-n Reset Reset 0 s 0 s 60 s, IEC/ ANSI DECAY Siemens Protection Devices Limited Chapter 1 Page 26 of 49

30 Chapter 1-7SR45 Description of Operation 3.3 Instantaneous Derived Earth Fault Protection (50N) Two instantaneous derived earth fault elements are provided in the 7SR45 Argus Relay. 50N-1, 50N-2 Earth current is derived by calculating the vector sum of the measured phase currents. Each instantaneous element has independent settings for pick-up current 50N-n Setting and a definite time delay 50N-n Delay. Operation of the instantaneous derived earth fault elements can be inhibited by assigning binary inputs. Inhibit 50N-n A binary input. Gn 50N- n Element Disabled Enabled Inhibit 50N-n & General Pickup Gn 50N -n Setting Gn 50N- n Delay IL1 IL2 I N c > 50N-n IL3 Figure 3-3 Logic Diagram: Instantaneous Derived Earth Fault Element Table 3-4 Instantaneous Derived Earth Fault Protection (50N-n) Parameters Description Default Value Min Max Step Change Gn 50N-n Element 50N-n Block Disabled Gn 50N-n Setting Pick-up current 1xIn 0.2xI n 20xI n s < 20 s 0.01 Gn 50N-n Delay Delay time 0 20 s < 100 s s 600 s Siemens Protection Devices Limited Chapter 1 Page 27 of 49

31 Chapter 1-7SR45 Description of Operation 3.4 Time Delayed Derived Earth Fault Protection (51N) One time delayed derived earth fault element is provided in the 7SR45 Argus Relay. 51N-1 51N-n Setting sets the pick-up current level. A total of 7 shaped characteristics are provided from IEC and ANSI. An inverse definite minimum time (IDMT) characteristic is selected using 51N-n Char. A time multiplier is applied to the characteristic curves using the 51N-n Time Mult setting. Alternatively, a Definite Time Lag (DTL) can be chosen using 51N-n Char. When Definite Time Lag (DTL) is selected the time multiplier is not applied and the 51N-n Delay (DTL) setting is used instead. The 51N-n Reset setting can apply a definite time delayed reset or when the operation is configured as an IEC or ANSI if the reset is selected as IEC/ANSI (DECAY) reset, the associated reset curve will be used. A minimum operate time for the characteristic can be set using the 51N-n MinOperate setting. A fixed additional operate time can be added to the characteristic using the 51N-n Follower setting. Operation of the time delayed derived earth fault elements can be inhibited by assigning binary inputs. Inhibit 51N-n A binary input. Gn 51N - n Element Disabled Enabled Inhibit 51N-n & Gn 51N - n Setting Gn 51N - n Char Gn 51N - n Time Mult Gn 51N - n Delay (DTL) Gn 51N - n MinOperate Gn 51N- n Follower ' Gn 51N -n Reset IL1 IL2 IL3 I N c Pickup trip General Pickup 51N- n Figure 3-4 Logic Diagram: Time Delayed Derived Earth Fault Protection The following are the 51N-n supported curve characteristic: DTL, IEC-NI, IEC-VI, IEC-EI, IEC-LTI, ANSI-MI, ANSI-VI, ANSI-EI Operating time for IEC : t op = K I α Is ( ) 1 X Tm Operating time for IEEE/ANSI : t op= A I P Is ( ) + B 1 X Tm Reset time for IEC/IEEE/ANSI : R 1 I Is n Tm t r = 1 R I n ( ) Is X Tm 2018 Siemens Protection Devices Limited Chapter 1 Page 28 of 49

32 Chapter 1-7SR45 Description of Operation Table 3-5 Constants for operating and reset curve characteristics Operating time Reset time Curve type K α P A B R n IEC-NI IEC-VI IEC-EI IEC-LTI IEEE/ANSI - MI IEEE/ANSI - VI IEEE/ANSI - EI Where, I - Fault current Magnitude Is - Pickup setting Tm - Time multiplier Table 3-6 Time Delayed Derived Earth Fault Protection (51N-n) Parameters Description Default Value Min Max Step Change Gn 51N-n Element 51N-n Block Disabled Gn 51N-n Setting Pick-up current 0.5xI n 0.1xI n 0.8xI n 0.01 Gn 51N-n Char Characteristics IEC NI Gn 51N-n Time Mult Gn 51N-n Delay Gn 51N-n Min Operate Gn 51N-n Follower DTL Time Multiplier (other than DTL) Delay (Applicable only for DTL) Minimum Operate Time 1 s s 0 s 15 s s 0 s 20 s 0.01 Follower DTL 0 s 0 s 20 s 0.01 Gn 51N-n Reset Reset 0 s 0 s 60 s, IEC/ ANSI DECAY Siemens Protection Devices Limited Chapter 1 Page 29 of 49

33 Chapter 1-7SR45 Description of Operation 3.5 Instantaneous Measured Earth Fault Protection (50G) The earth current is measured directly via a dedicated current analogue input, IL4/I E. Two instantaneous measured earth fault elements are provided in the 7SR45 Argus Relay. 50G-1, 50G-2 Each instantaneous element has independent settings for pick-up current 50G-n Setting and a definite time delay 50G-n Delay. Operation of the instantaneous measured earth fault elements can be inhibited by assigning binary inputs. Inhibit 50G-n A binary input Gn 50G- n Element Disabled Enabled Inhibit 50 G- n & General Pickup Gn 50G- n Setting 51G/50G Measurement c > Gn 50G - n Delay 50 G - n I G Figure 3-5 Logic Diagram: Instantaneous Measured Earth-fault Element Table 3-7 Instantaneous Measured Earth Fault Protection (50G-n) Parameters Description Default Value Min Max Step Change Gn 50G-n Element 50G-n Block Disabled Gn 50G-n Setting Pick-up current 0.2xI n 1xI n 20xI n 0.1 Gn 50G-n Delay Delay time 0 0 s < 20 s s < 100 s s 600 s Siemens Protection Devices Limited Chapter 1 Page 30 of 49

34 Chapter 1-7SR45 Description of Operation 3.6 Time Delayed Measured Earth Fault Protection (51G) One time delayed measured earth fault element is provided in the 7SR45 Argus Relay. 51G-1 51G-n Setting sets the pick-up current level. A total of 7 shaped characteristics are provided from IEC and ANSI. An inverse definite minimum time (IDMT) characteristic is selected using 51G-n Char. A time multiplier is applied to the characteristic curves using the 51G-n Time Mult setting. Alternatively, a Definite Time Lag (DTL) can be chosen using 51G-n Char. When DTL is selected the time multiplier is not applied and the 51G-n Delay (DTL) setting is used instead. The 51G-n Reset setting can apply a definite time delayed reset, or when the operation is configured as an IEC or ANSI if the reset is selected as IEC/ANSI (DECAY), reset the associated reset curve will be used. The reset mode is significant where the characteristic has reset before issuing a trip output. A minimum operate time for the characteristic can be set using 51G-n MinOperate setting. A fixed additional operate time can be added to the characteristic using 51G-n Follower setting. Operation of the time delayed measured earth fault elements can be inhibited by assigning binary inputs. Inhibit 51G-n A binary input. Gn 51G-n Element Disabled Enabled Inhibit 51G-n & Gn 51G- n Setting Gn 51G-n Char Gn 51G- n Time Mult Gn 51G-n Delay (DTL ) Gn 51G- n MinOperate Gn 51G- n Foll ower Gn 51G- n Reset Gn 51G/50G Measurement c Pickup General Pickup I G trip 51 G - n Figure 3-6 Logic Diagram: Time Delayed Measured Earth Fault Element The following are the 51G-n supported Curve Characteristic: DTL, IEC-NI, IEC-VI, IEC-EI, IEC-LTI, ANSI-MI, ANSI-VI, ANSI-EI Operating time for IEC : t op = K I α Is ( ) 1 X Tm Operating time for IEEE/ANSI : t op= A I P Is ( ) + B 1 X Tm Reset time for IEC/IEEE/ANSI : R 1 I Is n Tm t r = 1 R I n ( ) Is X Tm 2018 Siemens Protection Devices Limited Chapter 1 Page 31 of 49

35 Chapter 1-7SR45 Description of Operation Table 3-8 Constants for operating and reset curve characteristics Operating time Reset time Curve type K α P A B R n IEC-NI IEC-VI IEC-EI IEC-LTI IEEE/ANSI - MI IEEE/ANSI - VI IEEE/ANSI - EI Where, I - Fault current Magnitude I s - Pickup setting Tm - Time multiplier Table 3-9 Time Delayed Measured Earth Fault Protection (51G-n) Parameters Description Default Value Min Max Step Change Gn 51G-n Element Gn 51G-n Setting 51G-1 Block Disabled Pick-up current 0.5xI n 0.06xI n 0.80xI n 0.01 Gn 51G-n Char Characteristics IEC NI Gn 51G-n Time Mult Gn 51G-n Delay Gn 51G-n Min Operate Gn 51G-n Follower DTL Time Multiplier (other than DTL) Delay (Applicable only for DTL) Minimum Operate Time 1 s s 0 s 15 s s 0 s 20 s 0.01 Follower DTL 0 s 0 s 20 s 0.01 Gn 51G-n Reset Reset 0 s 0 s 60 s, IEC/ ANSI DECAY Siemens Protection Devices Limited Chapter 1 Page 32 of 49

36 Chapter 1-7SR45 Description of Operation 3.7 Switch-On-To-Fault (50LC/SOTF) SOTF provides high-speed tripping in the event of energizing the feeder while the earth switch is closed or while the feeder is energized when the fault current/short circuit current persists. SOTF function monitors the phase current for a maximum duration of 25 AC cycles from the CT interrupt and trips when any fault is detected as per the user settings. After the 25 AC cycles, SOTF function would be inhibited automatically. SOTF can be inhibited by assigning binary input. Operation of the Switch-On-To-Fault elements can be inhibited from: Inhibit 50LC A binary input Gn 50 LC /SOTF Enabled Disabled Inhibit 50LC & Gn 50LC Setting c 1 General Pickup > > 1 50 LC > Gn 50 LC / SOT F Meas urement IL1 IL2 IL3 25 AC cycles Figure 3-7 Logic Diagram: 50LC Overcurrent Element Table LC/SOTF Parameters Description Default Value Min Max Step Change Gn 50LC/SOTF Setting Pick-up current 2xI n 1xI n 20xI n Siemens Protection Devices Limited Chapter 1 Page 33 of 49

37 The following graphs show the SOTF operating time for the CT power only. Chapter 1-7SR45 Description of Operation Figure 3-8 Operating Time for Switch-On-To-Fault with Binary Outputs Figure 3-9 Operating Time for Switch-On-To-Fault with Pulse Output 2018 Siemens Protection Devices Limited Chapter 1 Page 34 of 49

38 Chapter 1-7SR45 Description of Operation NOTE: The multi-phase faults results to a shorter operating time. Under the low battery or battery drained condition, the boot up time is increased by maximum of 25 ms. 3.8 General Alarm General Alarms are the user defined text messages displayed on the LCD when binary inputs are mapped and triggered. Up to 4 general alarms of 16 characters can be configured, each triggered from one or more input. Each general alarm generates an event. If multiple alarms are activated simultaneously, the last alarm indication is displayed on the LCD. All the fault triggers generated by general alarms are logged in to the fault data record. Table 3-11 General Alarm Parameters Description Range General Alarm-n Default Value Min Max General Alarm-n 16 char (0-9, A-Z, +, -, /, SPACE) Alarm-n Reset LED, Trip Flag Indication and Binary Outputs Step Change Depending upon any binary output configuration set by the user to operate the protection function, if the protection functions detect any fault, binary output(s), local and remote trip flag indications, trip and respective phase or earth LEDs operate and latch. By using the RESET flag functionality, the user can reset binary outputs, LEDs, local trip flag indication. The user can reset binary output/leds in any one of the following methods: Binary Input Reydisp Software TEST/RESET key Reset via Rear Communication Protocol After successful reset of binary outputs, local flags, and LEDs, the FLAGS RESET message appears on LCD and all the LEDs flashes and reset. In the CT power mode, LED test can be performed if the current is more than 0.4xI n (single phase) or 0.14xI n (three phase). If the fault current persists, pop-up message appears on the LCD FAULT PERSISTS Siemens Protection Devices Limited Chapter 1 Page 35 of 49

39 Chapter 1-7SR45 Description of Operation Reset through Binary Input In the INPUT MATRIX configuration, LEDs and outputs can be reset by configuring the binary input. The configuration can be executed with Reydisp Evolution or Human Machine Interface (HMI). Figure 3-10 Reset LEDs Outputs: Reydisp Software Input Matrix Reset using Reydisp Software When the relay is latched, LEDs can be reset by sending an appropriate command over the data communications channels using Reydisp software. Figure 3-11 Reset Flags In the Reydisp Evolution screen, navigate to Relay > Control and click Reset Flags TEST/RESET Key From the Relay Identifier Screen, reset the LEDs and outputs by pressing the TEST/RESET key Reset through rear communication protocol The resetting of LEDs and BOs can be possible via the rear communication protocol like Modbus and IEC Siemens Protection Devices Limited Chapter 1 Page 36 of 49

40 Chapter 1-7SR45 Description of Operation 3.10 Current Inputs The 7SR45 Argus Relay consists of 4 current inputs. The 3 current inputs are provided for measuring the phase currents and 1 current input is provided for measuring the ground current. Based on the ordering option, current inputs are available for 1 A and 5 A variants. The 7SR45 Argus Relay consists of 1 built-in Power Current Transformer (PCT) and 1 built-in Measuring Current Transformer (MCT) for each phase current input. 1 MCT is provided on the ground-current input. The current is sampled at 800 Hz for both 50 Hz and 60 Hz system frequency. Protection and monitoring functions of the relay use the fundamental frequency component to calculate the RMS value of current. The primary CT ratio used for the relay instruments and fault logs can be set in the CT/VT configuration menu Binary Inputs The binary inputs (BI) are opto-couplers operated from a suitably rated AC/DC power supply. The device variants with binary inputs having an 88 V threshold can be operated using an AC/DC source and the 19 V threshold can be operated with DC source only. The status of BI can be viewed via LCD or Reydisp Evolution software or SCADA. The 7SR45 Argus Relays are available with 2 or 4 binary inputs. The user can assign any binary input to any of the available functions such as inhibits, binary outputs, reset flags, and general alarms (INPUT CONFIG > INPUT MATRIX). Binary input can also be mapped to operate the pulse output in the presence of auxiliary power supply/ct input. Pick-up (PU) and drop-off (DO) time delays are associated with each binary input. Where no pick-up time delay has been applied the input may pick up due to induced AC voltage on the wiring connections (For example, cross site wiring). The default pick-up time of 20 ms provides AC immunity. Each input can be configured independently. Each input can be logically inverted to facilitate integration of the relay within the user scheme. When inverted the relay indicates that the BI is triggered when no binary input voltage is applied. Inversion occurs before the PU & DO time delay. Binary inputs can be configured for instantaneous operation from 19 V DC power supply by setting of 0 ms PU and 25 ms DO timers. Each binary input can be assigned to any binary output. This allows the relay to provide panel indications and alarms. Inverted Inputs Binary Input 1 BI 1 inverted =1 BI 1 P/U Delay BI 1 D/O Delay BI 1 Event INPUT CONFIG> BINARY INPUT CONFIG INPUT CONFIG> INPUT MATRIX (OR gates) Binary Input n BI n inverted =1 BI n P/U Delay BI n D/O Delay BI n Event Figure 3-12 Binary Input Logic Logic signals, e.g. 'Inhibit 51-1' 2018 Siemens Protection Devices Limited Chapter 1 Page 37 of 49

41 Chapter 1-7SR45 Description of Operation Table 3-12 Binary Input Parameters Description Default Value Min Max Step Change Inhibit element block Inhibit element block Inhibit element block Inhibit 50N-1 50N-1 element block Inhibit 50N-2 50N-2 element block Inhibit 51N-1 51N-1 element block Inhibit 50G-1 50G-1 element block Inhibit 50G-2 50G-2 element block Inhibit 51G-1 51G-1 element block Inhibit 50LC 50LC/SOTF element block Select Group 1 # Select Group Select Group 2 # Select Group Rst LEDs & O/Ps Reset LEDs and BOs Trip Pulse O/P Pulse output Local mode # Local mode Remote mode # Remote mode Local or Remote mode # Local or Remote mode Out Of Service mode # Out Of Service mode General Alarm-1 Display General alarm-1 text General Alarm-2 Display General alarm-2 text General Alarm-3 * Display General alarm-3 text General Alarm-4 * Display General alarm-4 text NOTE: * For 7SR4501 variants, these parameters are not available. # For 7SR4501-xGA10-1AA0 variant, these parameters are not available. Table 3-13 Binary Input Configuration Parameters Description Default Value Min Max Step Change Inverted Inputs Input Inversion BI-n Pickup Pickup delay BI-n dropoff Dropoff delay s < 20 s s < 100 s s 600 s 1 0 s < 20 s s < 100 s s 600 s 1 Enabled in Local Enabled in Local mode 1 (all BIs) Enabled in Remote Enabled in Remote mode 1 (all BIs) NOTE: Depending on the number of binary inputs, the sleep mode current will increase if the binary input is connected and energized in the sleep mode. NOTE: When any binary input is assigned to Trip Pulse Output and when the TEST/RESET key is pressed, a FAULT/ MAINT PERSISTS pop up appears Siemens Protection Devices Limited Chapter 1 Page 38 of 49

42 Chapter 1-7SR45 Description of Operation 3.12 Binary Outputs The 7SR45 Argus Relay consists of 2 or 4 binary output which can be configured to send commands to the switchgear units and annunciations for remote signalling of the important events and status Binary Output Matrix Binary output can be assigned to any available functions under OUTPUT CONFIG > OUTPUT MATRIX menu Binary Output Configuration In the default mode of operation, binary outputs are self reset and remain energised until the triggering condition exists. If required, the binary outputs can be programmed to operate as hand reset. NOTE: The binary output 1 and binary output 2 only can be configured as hand reset. The binary output 3 and binary output 4 are always of self reset type. The minimum operating time is 20 milliseconds. For 7SR4501-xGA10-1AA0 Self Reset/Hand Reset In the default operating mode, binary outputs are self reset. If required, the outputs can be programmed to operate as hand reset. However, the hand reset functionality is applicable for protection trip signals, IRF signal, and BI signals only. All the supervisory signals such as low battery, general pick up, and protection healthy are always of self reset type. By default, the Binary Output 1 is mapped to IRF function and programmed as 'hand reset". In the self reset condition, binary output resets if the input current drops below the sensitivity levels. NOTE: In the absence of auxiliary voltage, the binary output 3 and binary output 4 will not be functional and remain in the non-operated condition. Logic signals, e.g. '51-1' Reset LEDs & Outputs (TEST/RESET key, Binary Input, Data Comms) BO 1 Hand Reset BO 1 hand reset Min Operate Time & 1 & S R Q Output 1 Event OUTPUT CONFIG> OUTPUT MATRIX 1 & (Or gates) OUTPUT CONFIG> BINARY OUTPUT CONFIG OUTPUT CONFIG> BINARY OUTPUT CONFIG BO n BO n hand reset 1 & & 1 & S R Q Output n Event Figure 3-13 Binary Output Logic 2018 Siemens Protection Devices Limited Chapter 1 Page 39 of 49

43 Chapter 1-7SR45 Description of Operation Table 3-14 Binary Output Parameters Description Default Value Min Max element operate element operate element operate N-1 50N-1 element operate N-2 50N-2 element operate N-1 51N-1 element operate G-1 50G-1 element operate G-2 50G-2 element operate G-1 51G-1 element operate LC 50LC/SOTF element operate Active Grp 1 # Active Group Active Grp 2 # Active Group General Pickup Pickup detected Prot'n Healthy Protection Healthy Low Battery Battery Volts low indication IRF Internal Relay Failure 1 (BO1), - (Others) Local mode # Local mode Remote mode # Remote mode Out of Service mode # Out of Service mode BI1 Operated BI-1 operated BI2 Operated BI-2 operated BI3 Operated * BI-3 operated BI4 Operated * BI-4 operated NOTE: * For all 7SR4501 variants, these parameters are not available. NOTE: # For 7SR4501-xGA10-1AA0 variant, these parameters are not available. Step Change NOTE: If a binary output is assigned to IRF, do not use the same binary output for any other functions Binary Output Operations The relay reset can be performed from the Relay Identifier Screen > TEST/RESET key. If the fault current persists and if the user presses TEST/RESET key, the pop-up message appears, FAULT PERSISTS. Based on the availability of power source, the flag can be reset by using any one of the following conditions: BO Trip/Reset on Battery/USB In this mode, the relay uses the power from battery/usb to operate/reset the binary output and takes approximately 4s to perform the action. If the consecutive commands are provided within 4 seconds, the relay performs delayed operations and displays a pop-up message appears on the HMI INSUFFICIENT ENERGY BO Trip/Reset on CT Input or Auxiliary Voltage In this mode, the relay can operate/reset the binary outputs instantaneously Siemens Protection Devices Limited Chapter 1 Page 40 of 49

44 Chapter 1-7SR45 Description of Operation 3.14 Pulse Output The pulse output is used to interface directly with the low energy circuit breaker tripping coil. The pulse output provides 24 V, 0.1 Ws pulses of 50 ms ON and 500 ms OFF. The pulse output operates when any configured protection function trips. The trip energy for the trip coil is stored by a capacitor built into the protection relay. The capacitors are charged by the auxiliary power supply/phase current. The pulses are repeated until the fault current falls below the set value. The pulse output does not require any mapping with protection functions. In the presence of auxiliary power supply/phase current, pulse output can be operated by mapping to a binary input. When the assigned binary input is triggered, the pulse output operates, local flag operates, and Trip LED flashes. Pulse output is provided till the auxiliary power supply/phase current is available. NOTE: The time between the two pulses depends on the impedance of the trip coil and magnitude of the current (if the relay is powered through phase currents). When there is NO LOAD connected at the output of Pulse Output (NO TRIP coil is connected), the PULSE ON duration may vary from 50 ms to 70 ms. Pulse output cannot be triggered through Rear/Front communication protocols, it is recommended to use BIs for triggering the pulse output for remote trip applications Remote Flag Output The remote flag output is used to indicate the trip via an external flag. The remote flag output provides 24 V, 0.01 Ws pulses of 50 ms ON and 500 ms OFF. The remote flag output operates when any protection function trips. The energy is stored by a capacitor built into the protection relay. The capacitor is charged by auxiliary voltage or phase current. The pulses are repeated until the fault current falls below the set value. The remote flag output does not require any mapping with protection functions. NOTE: The time between the two pulses depends on the impedance of the flag indicator and on the current level (if the relay is powered by auxiliary power/phase current) Modes of Operation The 7SR45 Argus Relay can be powered on by using the following sources: Auxiliary Voltage Inputs CT Input USB Battery The 7SR45 Argus Relay is powered primarily from auxiliary voltage even if all other power sources are available. In the absence of auxiliary voltage, the relay is powered through phase currents. In the absence of both auxiliary voltage and phase currents, the relay can be powered on by USB or battery. The relay can be powered on by the battery only if all other power sources are not available Auxiliary Voltage All the protection and measurement algorithms and RS485 communication (Rear port) are active when the 7SR45 Argus Relay is powered by auxiliary voltage. NOTE: In the absence of auxiliary voltage, the binary output 3 and binary output 4 will not be functional and remain in the non-operated conditions CT Input In the absence of auxiliary voltage, all the protection and measurement algorithms are active when the 7SR45 Argus Relay is powered through phase CTs, however the RS485 communication stops working Sensitivity In the absence of auxiliary voltage, the sensitivity of the relay is the minimum phase current required for the relay to energize, detect a fault, and trip as per the configuration Siemens Protection Devices Limited Chapter 1 Page 41 of 49

45 Chapter 1-7SR45 Description of Operation The sensitivity of 7SR45 Argus Relay is 0.20xIn (minimum phase current) in single phase or 0.10xIn (minimum phase current) in three phase. This minimum phase current is necessary for the healthy functioning of the relay. The PROTECTION HEALTHY and TRIP READY LEDs indicates the healthiness of the relay. The following graphs show the sensitivity of the relay and the corresponding operating time for the different start up currents. Figure 3-14 Sensitivity for Single Phase Fault with Binary Outputs 2018 Siemens Protection Devices Limited Chapter 1 Page 42 of 49

46 Chapter 1-7SR45 Description of Operation Figure 3-15 NOTE: The multi-phase current will improve the sensitivity. Sensitivity for Single Phase Fault with Pulse Output Time Delayed Overcurrent Protection during Start up (51, 51G, 51N) The operating time of the protection functions (51, 51G, 51N) are optimized at the lower current settings when the relay is energized with the short-circuit current or fault current. The optimization of the operating time is done only in the start up condition for the first 25 AC cycles if the fault current persists. The optimization is done as per the sensitivity characteristics of the binary output. However, the operating time of the pulse output also improves if the calculated operating time is less than the pulse output sensitivity characteristics. NOTE: The following conditions must be considered for the optimization algorithm: 1. If the calculated operating time is less than the boot up time as shown in the sensitivity graph (Figure 3-14, Figure 3-15), then the optimization is not effective. 2. If the battery is low, the calculated boot up time is increased, the optimization is not effective. 3. When the device is started with the load current and the fault current appears within 25 AC cycles, then the operating time will be less than the calculated time. 4. It is recommended to keep the Time Multiplier setting to more than The optimization of the operating time is not effective if the fault current is not stable during the boot up time USB In the USB mode, all the settings can be edited even if the protection functions are inactive. The binary inputs and binary outputs are operational in the USB mode. In the USB mode, the local flag indicator reset is only possible. The pulse output and remote flag output cannot be operated with USB Siemens Protection Devices Limited Chapter 1 Page 43 of 49

47 Battery Chapter 1-7SR45 Description of Operation In the battery mode, the relay can be energized by pressing the BAT ON/OFF key or if any binary input status is changed. The battery is used to operate 7SR45 Argus Relay only when other power sources are not available. In the battery mode, all the settings can be edited even if the protection functions are inactive. The binary inputs and binary outputs are operational in the battery mode. In the battery mode, the local flag indicator reset is only possible. The pulse output and remote flag output cannot be operated with battery. In the battery mode, if no keys are pressed for 60 s, the relay goes to sleep mode automatically. By default, in the battery mode, the backlight is OFF and it can be TURNED ON by pressing the backlight key Battery Profile The Battery Profile menu provides the consumption on battery power of the different application modules. The table 3-15 shows the battery profile parameter data and the status of the operations performed on the battery power. Table 3-15 Battery Profile Parameter Battery Profile Parameter Description Unit Device ON Dur n The duration of the device powered on with the battery source only. Seconds Backlit ON Dur n BO Oper n Count BI Oper n Count The duration of the LCD backlight powered on with the battery source only. The number of times the binary outputs operate with the battery source only. The number of times the binary inputs operate with the battery source only. Seconds The battery profile parameters data can be cleared with the DATA STORAGE > Clr Battery Data setting in HMI. NOTE: When replacing the new battery, the battery profile parameters data must be cleared Sleep Mode The 7SR45 Argus Relay goes to the sleep mode when the auxiliary power/ct power and USB power are not available. When the relay is in sleep mode, the user can access the LCD by pressing the BAT ON/OFF key. In case of inactivity, the relay goes to the sleep mode after 60 s. When the relay is powered by CT and no auxiliary power and any fault on the system occurs, the relay goes to sleep mode automatically if the phase CT currents are disconnected. When the device powered ON through USB power mode and once the USB cable is removed, the device goes to sleep mode automatically. NOTE: During the sleep mode, the 7SR45 Argus Relay has the limited functionality Low Battery Status Indication The low battery LED indication is displayed when the battery voltage falls below the sufficient operating voltage and an event is generated. In the low battery condition only setting view/edit is allowed. In the low battery mode, the backlight will not TURN ON. The low battery can be mapped to a binary output and can be used for remote signalling. NOTE: It is recommended to replace the battery when the low battery indication is displayed. Some of the relay operations such as turning on the backlight and resetting local flag, binary outputs and LEDs in the low battery mode will lead to insufficient operating voltage. The LCD displays "INSUFFICIENT ENERGY" message and the relay enters sleep mode. NOTE: During the low battery, if the battery voltage reduces below 1.5 V while doing the setting changes, the device will enter sleep mode and all unsaved setting changes will be discarded Siemens Protection Devices Limited Chapter 1 Page 44 of 49

48 Chapter 1-7SR45 Description of Operation NOTE (For selected variants only): When the battery voltage has dropped below 1.5 V, the low battery LED flickers continuously and indicates that the critical voltage level is reached. The Critical Battery event will be raised Maintenance Mode Output Test The output test feature is only visible from the Relay fascia and allows the user to operate the relays functions. The output test of the selected function will automatically operate the binary output assigned to that function. Any protection function which is enabled in the setting menu will appear in the Output Test Self Monitoring The 7SR45 Argus relay is built in with a number of self-monitoring features. The self monitoring is performed periodically on boot up. The supervision includes monitoring of power supply signals, code execution watchdog, memory checks by checksum, RTC check, and battery health checks. The Protection Healthy LED is illuminated when the internal power supply signals are healthy Internal Relay Failure (IRF) The internal relay failure feature monitors the healthiness of the relay and supervises the following scenarios in the presence of auxiliary power/ct power and IRF event will be generated. 1. Unexpected (Watch Dog) Error In case of an unexpected behaviour of 7SR45 Argus Relay, IRF condition will be signalled and the relay restarts. If this error is observed frequently, the relay should be sent to the factory. 2. Internal Supply Voltage Error 7SR45 Argus Relay monitors the internal supply voltage and in case of an error, IRF condition will be signalled. The protection functions are blocked during this condition. 3. Card Error In case of I/O card failure, the error message is displayed and IRF condition will be signalled. The relay performance is not guaranteed and it should be sent to the factory. 4. MLFB Error If the device information data is not correct during the start up, the error message will be displayed and IRF condition will be signalled. In case of MLFB error the relay will not be functional and the relay should be sent to the factory. 5. Calibration Error The 7SR45 Argus Relay checks for the integrity of the calibration data during the start up and displays a message in case of an error and IRF condition will be signalled. The user can acknowledge the error message via HMI only and the default calibration data will be applied to the relay and IRF condition will be cleared. The relay will be functional only when the calibration error message is acknowledged. In this case, the relay performance is not guaranteed and it should be sent to the factory for calibration. 6. Setting Error The 7SR45 Argus Relay checks for the integrity of the settings during the start up and displays a message in case of an error and IRF condition will be signalled. The user can acknowledge the error message via HMI only and the default settings will be applied to the relay and IRF condition will be cleared. The relay will be functional only when the setting error message is acknowledged. NOTE: In case Card Error and MLFB Error, the relay will not be functional and the relay should be sent to the factory. The following table displays the error messages and the error codes in the Instrument Mode Siemens Protection Devices Limited Chapter 1 Page 45 of 49

49 Chapter 1-7SR45 Description of Operation Table 3-16 IRF Errors Error Code Error Message Setting Error Load default settings! Calibration Error Load default calibration! MLFB Error MLFB Information Error! Card Error Analog & IO card Error! Internal Supply Voltage Error Unexpected Error NOTE: If a binary output is assigned to IRF, it is recommended not to use the same binary output for any other protection function configuration Data Storage The relay stores two types of data: Fault Records, Event records. Data records are stored in the non-volatile memory. The data storage menu contains the settings for clearing events and faults Fault Records (Trip Log) Fault records are triggered when the protection function detects a fault condition and the trip alert message appears on LCD to indicate that a new fault has occurred. Up to 10 fault records can be stored and displayed on the fascia LCD. Fault records provide a summary of relay status when the trip occurs, i.e. setting group, element issued the trip, any phase/earth picked up, fault magnitude, LED indications, general alarm, and date and time. Trip alert message is displayed until the fault is acknowledged by the user. The event records and the fault records provide the full sequence of events that resulted to a trip for analysis. Fault records are stored in a rolling buffer with the oldest faults overwritten. The fault storage can be cleared with the DATA STORAGE > Clear Faults setting in HMI Event Records (Event Log) The event recorder feature allows the time tagging of any change of state (Event) in the relay. When an event occurs, the actual event condition is logged as a record with a date and time stamp to a resolution of 1 ms. The relay can store maximum of 100 event records. When the event buffer is full, any new record will overwrite the old records. Stored events can be cleared by using the DATA STORAGE > Clear Events setting in HMI or from Reydisp. The following events are logged: Change of state of binary outputs Change of state of binary inputs Change of settings Device start up and shut down Protection element operation Critical or low battery General alarm IRF All events can be uploaded over the data communications channel(s) and displayed in the Reydisp package in chronological order and viewed in the sequence of events Siemens Protection Devices Limited Chapter 1 Page 46 of 49

50 Chapter 1-7SR45 Description of Operation 3.20 Real Time Clock Time and date can be set either via the relay fascia using appropriate commands in the System Config menu or using Reydisp software. When the relay is de-energized, time and date are maintained by CR1632, 3 V 140 mah Li/MnO2 coin cell batteries. The relay can be synchronized to the nearest second or minute using the Reydisp software. The device can have a drift of ±6 s/day. Table 3-17 Real Time Clock Accuracy (-10 C to 60 C) Attribute ±70 p.p.m Value The default date is set as 01/01/2014 to indicate that the date is not set. In the relay, only the hours and minutes can be edited. When the user presses ENTER after editing the seconds, seconds is set to zero and the clock starts. By default, the clock follows a 24 hour format for time and DD/MM/YYYY format for date Operating Mode The 7SR45 Argus relay has the three operating modes: Local Remote Out of Service The following table identifies the functions operation in each mode. The modes can be selected by the following methods: SETTINGS MODE>SYSTEM CONFIG>Operating Mode setting, a Binary Input or Command. Table 3-18 Operating Mode OPERATION REMOTE MODE LOCAL MODE OUT OF SERVICE MODE Control USB/Rear Ports set to REMOTE * Enabled Disabled Disabled USB/Rear Ports set to LOCAL * Disabled Enabled Disabled Binary Inputs Setting Option Setting Option Enabled Binary Outputs Enabled Enabled Disabled Reporting Spontaneous IEC Enabled Enabled Disabled General Interrogation IEC Enabled Enabled Disabled MODBUS Enabled Enabled Enabled Change of settings USB/Rear Ports set to REMOTE * Enabled Disabled Enabled USB/Rear Ports set to LOCAL * Disabled Enabled Enabled USB/Rear Ports set to LOCAL or REMOTE * Enabled Enabled Enabled Fascia Enabled Enabled Enabled Historical Information Event Records Enabled Enabled Enabled Fault Information Enabled Enabled Enabled Setting Information Enabled Enabled Enabled * Each Communication port has a setting to allow the user to determine which port is used for local operation and which port is used for remote operation. If the port is set to Local or Remote, the port can be used for all operations and has no priority. The communication port modes can be selected at: SETTINGS MODE>SYSTEM CONFIG>Communications 2018 Siemens Protection Devices Limited Chapter 1 Page 47 of 49

51 3.22 Settings Groups Chapter 1-7SR45 Description of Operation The relay provides two groups of settings Group number (Gn) 1 to 2. At any one time, only one group of settings can be active SYSTEM CONFIG >Active Group setting. By using the View/Edit Group settings, the user can edit one group when the relay operates as per the settings from another active group. Some settings are independent of the active group setting i.e. they apply to all settings groups. The group dependent settings are indicated by Gn prefix. A change of settings group can be achieved both locally at the relay fascia and remotely over the data communications channel(s) or via a binary input. By default, setting group change by BI is level triggered. NOTE: When the setting group or any setting parameters is changed, the relay will restart to apply the new settings and the protection is not active for a moment. NOTE: One setting group is available for the MLFB 7SR4501-xGA10-1AA0 variant Password Feature The relay incorporates password protection for settings. The programmable password feature enables the user to enter a 4 character alpha-numeric code to secure access to the relay functions. The relay is supplied with the password set to NONE, i.e. the password feature is disabled. The password must be entered twice as a security measure against the accidental changes. Once a password has been entered then it will be required thereafter to change settings. Passwords can be de-activated by using the password to gain access and by entering the password NONE. Again this must be entered twice to deactivate the security system. As soon as the user attempts to change a setting, the password is requested before any changes are allowed. Once the password has been validated, the user is logged on and any further changes can be made without re-entering the password. If no more changes are made within 1 minute then the user will automatically be logged off, re-enabling the password feature. The password prevents unauthorised changes to settings from the front fascia or over the data communications channel(s). The password validation screen also displays a numerical code. If the password is lost or forgotten, this code should be communicated to Siemens customer support representatives and the password can be retrieved Battery 7SR45 Argus Relay consists of CR123 A, 3 V 1400 mah Li-Mn non rechargeable battery. The battery is used to energize the device when auxiliary voltage/phase current/usb is not available. The user can perform actions such as viewing the fault records, setting change, and resetting the flags with battery power Firmware Update In 7SR45 Argus Relay, firmware can be updated by performing the following procedure: 1. Connect the relay to a local PC using a USB cable. 2. Run the valid executable file from the local PC. The application detects the connected relay and updates the firmware. If any failure occurs, a message appears automatically in the PC application. 3. After successful update, the relay automatically restarts.! Do not disconnect the USB when the firmware update is in progress. If the firmware update is terminated intermittently, it may corrupt the existing firmware in the relay and the relay may stop working. This alert appears when the firmware is updated. This alert appears only when the 7SR45 Argus Relay is loaded with 2438H80001R2a-1a firmware. The following table shows the compatibility of 7SR4501/7SR4502/7SR4503/7SR4504 device and firmware Siemens Protection Devices Limited Chapter 1 Page 48 of 49

52 Chapter 1-7SR45 Description of Operation Table 3-19 Firmware Update Compatibility Device Version 7SR450[1/3]/FF 7SR450[1/2/3/4]/FF 7SR450[1/2]/EE 7SR4501/DD 7SR4501/CC 7SR4501/BB 7SR4501/BB Firmware Version 2438H80001R1f-1a 2438H80001R2b-1b 2438H80001R2a-1a 2438H80001R1e-1a 2438H80001R1d-1a 2438H80001R1c-1a 2438H80001R1b-1a 2438H80001R1a-1a NOTE: The incompatibility of device and firmware will display an error message MLFB INFORMATION ERROR Siemens Protection Devices Limited Chapter 1 Page 49 of 49

53 Chapter 2-7SR45 Settings & Instrument Guide 7SR45 Settings & Instruments Document Release History This document is issue 2018/09. The list of revisions up to and including this issue is: 2018/09 Eighth Issue 2018/06 Seventh Issue 2018/04 Sixth Issue 2017/08 Fifth Issue 2017/01 Fourth Issue 2016/10 Third Issue 2016/09 Second Issue 2015/08 First Issue 2018 Siemens Protection Devices Limited Chapter 2 Page 1 of 9

54 Chapter 2-7SR45 Settings & Instrument Guide Contents Section 1: Introduction Relay Menus Operation Guide User Interface Operation Setting Mode Instrument Mode Fault Data Mode... 6 Section 2: Setting & Configuring the Relay Using Reydisp Evolution Physical Connection Front USB connection Rear RS485 connection Configuring Relay Serial Data Communication Connecting to the Relay for setting via Reydisp... 9 List of Figures Figure 1-1 Menus... 3 Figure 1-2 Relay Identifier Screen... 3 Figure 1-3 Menu Structure... 5 Figure 2-1 USB connection to PC... 7 Figure 2-2 RS485 connection to PC... 7 Figure 2-3 PC Com Port Selection Siemens Protection Devices Limited Chapter 2 Page 2 of 9

55 Chapter 2-7SR45 Settings & Instrument Guide Section 1: Introduction 1.1 Relay Menus 1. Setting Mode This mode allows the user to view and change settings in the relay. 2. Instrument Mode This mode allows the user to view the conditions of the relay i.e. Current, IO status, and Misc. status. 3. Fault Data Mode This mode allows the user to view fault records. If the password is configured, the user can only view all the menus without entering a password. Further actions are permitted if the correct password is entered. Relay Identifier Setting Mode Instrument Mode Fault Data Mode Figure 1-1 Menus 1.2 Operation Guide User Interface Operation Figures 1.3 show the basic menu structure diagram and display the main modes: SETTING MODE INSTRUMENT MODE FAULT DATA MODE When the relay is shipped from the factory all stored data is cleared and the password is set to NONE. When the relay is energized for the first time, the following message is displayed: Figure 1-2 Relay Identifier Screen 1.3 Setting Mode The Setting Mode is reached by pressing the READ DOWN or by pressing ENTER key from the Relay Identifier Screen. Once the Setting Mode is reached, the user can navigate into the settings mode sub-menus. Each sub-menu contains the configurable settings of the relay in separate groups. The sub menus are accessed by pressing the TEST/RESET key. Press or keys to scroll through the first and last settings. If the keys are pressed further from the first and last settings sub menu, it exits from the sub menu and returns to the previous menu Siemens Protection Devices Limited Chapter 2 Page 3 of 9

56 Chapter 2-7SR45 Settings & Instrument Guide Press ENTER key to edit the setting value. If the relay setting is password protected, the user is prompted to enter the password. After entering the correct password, the user is allowed to configure the settings. If an incorrect password is entered, editing is not permitted. The password is not required to view and navigate to all screens. When a setting is edited, flashing characters indicate the edit field. Press the or key to scroll through the valid field values. Hold the or keys to increase the rate of scrolling. To navigate between the digits of the setting values, press TEST/RESET key. Once the setting is updated by the user, press the CANCEL key to return to the Relay Identifier screen. The LCD displays the Save & Restart prompt message. Press ENTER to store the setting in non-volatile memory and the relay will restart. Press CANCEL key to discard the changed settings. 1.4 Instrument Mode The Instrument Mode sub-menu displays the current values, status of binary inputs and binary outputs. The following meters are available and are navigated by using the,, and TEST/RESET keys. INSTRUMENT CURRENT METER to view Primary Current Ia 0.00A Ib 0.00A Ic 0.00A Ig 0.00A In 0.00A Secondary Current Ia 0.000A Ib 0.000A Ic 0.000A Ig 0.000A In 0.000A BINARY I/p METER to view DESCRIPTION This sub-group includes all the meters that are associated with current. TEST/RESET key allows access to sub-group. The values of current refreshes at every 1 s interval. Displays the primary values of 3 phase currents, measured and derived earth currents. Displays the secondary values of 3 phase currents, measured and derived earth currents. Binary Input Meter displays the status of the binary input signals. TEST/RESET key allows access to sub-group. The values of binary input status refreshes at every 1 s interval. BI 1-4 Displays the state of binary inputs 1 to 4 (The number of binary inputs may vary depending on model). If status is "_" the value is zero. If status is "1" the value is one. BINARY O/p METER to view Binary Output Meter displays the status of the binary output signals. TEST/RESET key allows access to sub-group. The values of BO status refreshes at every 1 s interval. BO 1-4 Displays the state of binary outputs 1 to 4 (The number of binary outputs may vary depending on model). If status is "_" the value is zero. If status is "1" the value is one. GEN ALARM METER General Alarm Meter displays the status of the General Alarms. TEST/RESET key allows access to sub-group. to view The General Alarm status refreshes at every 1 s interval. ALARM 1-4 Displays the state of General Alarms 1 to 4. The Alarm can be renamed in Settings Menu and the updated name will appear in this window. Cleared The status can be Cleared or Raised depending on the Binary Input linked to the General Alarm MISC METER Misc. meter gives more information about the active setting group, fault and event records in the device, status of auxiliary Input and IRF. For more information about IRF, refer to Chapter 1, IRF table. BATTERY PROFILE The battery profile meter displays the status of the operations performed on the battery power Siemens Protection Devices Limited Chapter 2 Page 4 of 9

57 Chapter 2-7SR45 Settings & Instrument Guide 7SR45 Press ENTER SETTING MODE INSTRUMENT MODE FAULT DATA MODE SYSTEM CONFIG CURRENT METER PRIMARY CURRENT PRIMARY CURRENT Ia CT/VT CONFIG BINARY I/P METER BI STATUS PRIMARY CURRENT Ib BINARY O/P METER BO STATUS PRIMARY CURRENT Ic FUNCTION CONFIG GEN ALARM METER GENERAL ALARM STATUS PRIMARY CURRENT Ig MISC METER SETTING GROUP PRIMARY CURRENT In BATTERY PROFILE Device ON Dur n FAULT RECS SECOND Y CURRENT SECOND Y CURRENT Ia Backlit ON Dur n EVENT RECS SECOND Y CURRENT Ib BO Oper n Count IRF STATUS SECOND Y CURRENT Ic BI Oper n Count AUXILIARY INPUT SECOND Y CURRENT Ig 51-1 CURRENT PROT N PHASE O/C SECOND Y CURRENT In 51 N - 1 DERIVED E/ F 50 N N G - 1 MEASURED E/F 50 G G - 2 Inhibit LC/ SOTF Inhibit 50-2 Inhibit 51-1 Inhibit 50N-1 Inhibit 50N-2 Inhibit 51N-1 Inhibit 50G-1 Inhibit 50G-2 Inhibit 51G-1 Inhibit 50LC Select Group 1 Select Group 2 INPUT CONFIG INPUT MATRIX Rst LEDs & O/Ps Trip Pulse O/P Local mode Remote mode Local or Remote mode # Out Of Service mode General Alarm 1 General Alarm 2 General Alarm 3 General Alarm 4 * Inverted Inputs Enabled in Local Enabled in Remote # BI 1 Pickup BI 1 Dropoff BI 2 Pickup BI CONFIG BI 2 Dropoff BI 3 Pickup BI 3 Dropoff BI 4 Pickup * BI 4 Dropoff GENERAL ALARMS General Alarm - 1 General Alarm - 2 General Alarm - 3 General Alarm - 4 * N-1 50N-2 OUTPUT CONFIG OUTPUT MATRIX 51N-1 50G-1 50G-2 51G-1 50LC BO CONFIG Hand Reset O/Ps Active Grp 1 Active Grp 2 # General Pickup COMMUNICATION* RS485-Protocol RS485-StnAddr RS485-Baud Rate RS485-Parity RS485-Mode USB-Protocol USB-StnAddr USB-Mode Prot n Healthy Low Battery IRF Local mode Remote mode Out Of Service mode BI 1 Operated BI 2 Operated BI 3 Operated BI 4 Operated # * Clear Faults DATA STORAGE Clear Events Clr Battery Data MAINTENANCE Output Test * Available for 7SR45 Argus Dual Powered Relay # For 7SR4501-xGA10-1AA0 variant, the multiple settings group and relay modes are not available. Figure 1-3 Menu Structure 2018 Siemens Protection Devices Limited Chapter 2 Page 5 of 9

58 1.5 Fault Data Mode Chapter 2-7SR45 Settings & Instrument Guide 7SR45 Argus Relay stores maximum of 10 fault records. Each stored fault data can be viewed by pressing the TEST/RESET key. Each record contains data of the operated elements, analogue values, and LED status at the time of the fault. The data is viewed by scrolling down using the key Siemens Protection Devices Limited Chapter 2 Page 6 of 9

59 Chapter 2-7SR45 Settings & Instrument Guide Section 2: Setting & Configuring the Relay Using Reydisp Evolution To set the relay using a communication port the user will need the following:- PC with Reydisp Evolution Version or later version Installed. (This can be downloaded from our website and found under the submenu Software ) This software requires windows 2000-service pack 4 or above, or windows XP with service pack 2 or above and Microsoft.NET framework for tools. 2.1 Physical Connection The relay can be connected to Reydisp via any of the communication ports on the relay. Suitable communication Interface cable and converters are required depending which port is being used Front USB connection To connect your pc locally via the front USB port. USB Type B socket on Relay USB Type A Socket on PC USB Type B USB Type A Figure 2-1 USB Data Cable USB connection to PC Rear RS485 connection USB or 9 pin male D connector RS232 to RS485 Converter A/+ B/- B/- A/+ Laptop computer RS232 straight through cable or USB to RS232 Converter cable 25 pin male D connector RS485 Screened twisted pair Rear terminals Figure 2-2 RS485 connection to PC 2018 Siemens Protection Devices Limited Chapter 2 Page 7 of 9

60 Chapter 2-7SR45 Settings & Instrument Guide Configuring Relay Serial Data Communication This section is applicable for configuring the 7SR45 Argus Dual Powered Relay. Using the keys on the relay fascia scroll down the settings menus into the communications menu and if necessary change the settings for the communication port you are using on the relay. Reydisp software uses IEC protocol to communicate. When connecting the relay to a PC using the front USB port, the Reydisp setting software will automatically detect the relay without making any setting changes in the relay first as long as the USB is selected to IEC Table 2-1 COM1-RS485 Port and COM2-USB Port Description Range Default COM1-RS485 Protocol Selects protocol to use for COM1-RS485 COM1-RS485 Station Address Sets the station address for COM1-RS485 COM1-RS485 Baud Rate Sets the communications baud rate for COM1-RS485 COM1-RS485 Parity Selects whether parity information is used COM1-RS485 Mode Selects whether the port is Local or Remote. COM2-USB Protocol Selects protocol to use for COM2-USB COM2-USB Station Address Sets the station address for COM2-RS485 COM2-USB Mode Selects whether the port is Local or Remote. OFF, IEC , MODBUS-RTU 0 to 254 for IEC to 247 for Modbus RTU 1200, 2400, 4800, 9600, 19200, 38400, NONE, ODD, EVEN Local, Remote, Local Or Remote OFF, MODBUS-RTU, IEC , Local, Remote, Local Or Remote MODBUS-RTU NONE Local or Remote IEC Local or Remote 2018 Siemens Protection Devices Limited Chapter 2 Page 8 of 9

61 Chapter 2-7SR45 Settings & Instrument Guide 2.2 Connecting to the Relay for setting via Reydisp When Reydisp software is running all available communication ports will automatically be detected. On the start page tool bar open up the sub-menu File and select Connect. The Connection Manager window will display all available communication ports. With the preferred port highlighted select the Properties option and ensure the baud rate and parity match that selected in the relay settings. Select Connect to initiate the relay-pc connection. Figure 2-3 PC Com Port Selection The relay settings can now be configured using the Reydisp software. Please refer to the Reydisp Evolution Manual for further guidance. NOTE: 1. In Reydisp Evolution, verify that Do NOT Check Communications Connection is selected in the Advanced properties. 2. In Reydisp Evolution, check that the Relay Address is set as 1 in the Relay menu. (this is for 7SR450[1/3]- xgx10-1aa0) 3. In Reydisp Evolution, check that the Relay Address in the Relay menu is same as that of the Device address (for 7SR450[1/2/3/4]-[1/2][H/J][A/B][1/2]0-1AA0) Siemens Protection Devices Limited Chapter 2 Page 9 of 9