7SR45 Argus 7SR45 Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay

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1 7SR5 Argus 7SR5 Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay Energy Management

2 7SR5 Argus 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay Features Password Protection Self Monitoring Trip Timers Healthy shut-down below operating ranges Remote reset (binary input based) of flag with/without CT power and Auxiliary power Two Settings Groups User Interface Description The 7SR5 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 Current Transformer (CT), binary input/binary output, power supply, and communication configuration. 7SR5 is a member of Siemens Reyrolle protection devices Argus product family. The 7SR5 Argus Self Powered/Dual Powered Non- Directional Overcurrent and Earth Fault Relay is housed either in a U high, size or height reduced non draw-out case and provides protection, monitoring, instrumentation, and metering 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 RS85 (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). 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay supports the IEC and Modbus communication protocols. 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay can indicate the trip with local and remote flag indicator. Function Overview Protection 50 Instantaneous Overcurrent Protection 50N/G Instantaneous Derived/Measured Earth Fault Protection 5 Time Delayed Overcurrent Protection 5N/G Time Delayed Derived/Measured Earth Fault Protection 50LC/SOTF Switch-On-To-Fault 6 Character x Line Backlit LCD Menu Navigation Keys 9 non-programmable LEDs Local Flag Indicator Monitoring Functions Primary/Secondary Current Phases and Earth Binary Input/Binary Output Status Time and Date Fault Records (Trip Log) Event Records (Event Log) Hardware CT ( A or 5 A, via ordering option) BI, BO BI, BO Local Flag Indication via ordering option Remote Flag Output Pulse Output 9 LEDs Rear RS85 Communication Port Auxiliary Power Input Data Storage and Communication Front USB port + Rear RS85 port (optional) Protocols IEC , Modbus RTU Fault Records (Trip Log) Event Recording (Event Log) Time Synchronism Viewing and Changing Settings Battery Profiling Siemens Protection Devices Limited

3 Application 7SR5 Argus Self Powered/Dual Powered Relay is a numerical overcurrent and earth fault protection relay primarily intended for secondary distribution electrical networks. The 7SR5 Argus Self Powered/Dual Powered Non- Directional Overcurrent and Earth Fault Relay is designed to operate with/without an auxiliary supply. The 7SR5 Dual Powered Non-Directional Overcurrent and Earth Fault relay is powered primarily from the auxiliary voltage even though all other power sources are available. In the absence of auxiliary voltage, the relay is powered by CT input. The relay offers definite-time and inverse-time overcurrent and earth fault protection functions in accordance to IEC and ANSI standards. 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay are built in with a capacitor discharge pulse output for low-energy trip coil of the circuit breaker. Changeover binary outputs are also available for trip via an auxiliary powered shunt trip coil. 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay are targeted for the following applications: Protection Relay for Ring Main Units (RMU) Back up protection relay for the medium voltage applications Protection applications in remote locations where auxiliary supply is not available Control and relay panels refurbishment of old electromechanical protection relays 50/5 Phase Overcurrent Fault 50 INST/DTL and 5 IDMTL/DTL elements provide overcurrent protection, each with independent settings for pickup current, time-multiplier (5), and time-delays. User can select IEC or ANSI time current characteristics. The IDMT curve has a user selectable reset characteristic, either DTL or IEC or ANSI decaying to improve the grading with electromechanical protection. 50G/5G/50N/5N Measured/Derived Earth fault Two earth fault measurement modes are available. One mode directly measures the earth current from an independent CT (50G/5G) and the second mode derives the residual current internally from the line CTs (50N/5N). 50G/50N INST/DTL and 5G/5N IDMTL/DTL elements provide earth fault protection, each with independent settings for pickup current, time-multiplier (5G/5N), and time-delays. User can select IEC or ANSI time current characteristics. The IDMT curve has a user programmable reset characteristic either DTL or IEC or ANSI decaying to improve grading with electromechanical protection Time (sec) Functional Diagram 0 Long Time Inverse 7SR5 Normal Inverse IL (I A) 50LC/ SOTF 50 (x) 5 Very Inverse IL (I B) 50LC/ SOTF 50 (x) 5 Extremely Inverse IL (I C) 50LC/ SOTF 50 (x) 50N (x) 5 5N Current (multiples of setting) Fig. IEC Overcurrent Curves IL (I G) 50G (x) 5G Fig. Functional Diagram of 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay Siemens Protection Devices Limited

4 Time (sec) 0 Fig 5. Operating Time for Switch-On-To fault with Pulse Output Moderately Inverse Very Inverse Extremely Inverse Multi-phase faults will result in shorter operating time. 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 Current (multiples of setting) Fig. ANSI Overcurrent Curves 50LC/SOTF SOTF functionality provides high speed tripping if a fault is still present on the feeder after the reclosure of the circuit breaker (Close-on-to-Fault) or if earthing clamps are left connected after maintenance. The sensitivity of 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay is 0 % of nominal current for single phase and 0 % of nominal current in three phases. The PROTECTION HEALTHY LED and TRIP READY LED TURN ON when the relay is TRIP ready at the above mentioned current levels. The following graphs show the sensitivity of the relay and corresponding operating time for different start up currents. The following graph shows the SOTF operating time depending on the fault currents. Fig 6. Sensitivity for Single Phase Fault with Binary Output Fig. Operating Time for Switch-On-To fault with Binary Outputs Siemens Protection Devices Limited

5 To Control System Term A/+ GND B/- Ext Wire loop to Include line terminating Res Rear terminals RS85 Screened RS85 Screened twisted pair twisted pair Fig 8. Typical RS85 Connection Rear terminals The rear RS85 can be user selected to be OFF, IEC or Modbus RTU. Fig 7. Sensitivity for Single Phase Fault with Pulse Output Multi-phase current will improve the sensitivity. Data Acquisition - Via Communication Interface Sequence of Event Records (Event Log) Up to 00 events can be stored and time tagged to ms resolution. The events are stored on first-in-first-out basis. The events are available through the communication interface. Fault Records (Trip Log) The last 0 fault records are displayed on the relay fascia and are also available through the communication interface with time and date of trip, measured quantities, and type of fault. Real Time Clock The time and date can be set and is maintained while the relay is de-energised by a coin cell battery. Communications The relay offers a USB port as a standard on the front of all units. All of the relay functions can be set on a PC using Reydisp Evolution software via the USB port. The connection is made with a USB cable and operates with a plug and play connection, so no pre-setting of the relay is required. The front port can be switched off or set to use either the Modbus RTU or IEC protocols for testing purposes. A rear RS85 electrical connection is optionally available on the relay for system interface connections. An internal terminating resistor is provided, which can be connected into the circuit by adding a wire loop between the relevant terminals. Siemens Protection Devices Limited 5

6 Construction User Interface The relay is housed in a non draw-out U high, size case. The rear connection comprises of user friendly pluggable type terminals for pulse and flag output, binary inputs, binary outputs, RS85 communication and auxiliary input. The CT terminals are suitable for ring type lug connection to provide a secure and reliable termination. Fig 9. 7SR50 Front view Fig. 7SR50 Front view Fig 0. 7SR50Rear view Fig. 7SR50 Rear view Fig 5. User Interface The operator interface is designed to provide a user friendly method of viewing menus, entering settings, and retrieving data from the relay. Five buttons are provided for navigation around the menu structure. Additionally, two buttons are provided for battery ON/OFF and Backlight ON/OFF functionality. LCD A line by 6 character liquid crystal display with power save operation indicates the relay identifier, settings, instrumentation, and fault data. LEDs 9 non-programmable LEDs are available eliminating the need for expensive panel mounted pilot lights and associated wiring. Each LED shows clear indication of the associated functions state and has a label for identification. Flag Indicator local flag indicator is provided and configured for the trip indication. Relay Information The device is identified by the rating label on the fascia. The user can also give the device its own identity by editing the Relay Identifier displayed on the LCD. Power 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay can be powered in the following modes and their priority is as follows: Auxiliary Power Supply CT Power USB Power Battery Power Fig. 7SR50 Front view Fig. 7SR50 Rear view Siemens Protection Devices Limited 6

7 Indication of Conformity This product complies with the directive of the Council of the European Communities on the harmonization of the laws of the Member States relating to electromagnetic compatibility (EMC Directive 0/0/EU) and concerning electrical equipment for use within specified voltage limits (Low Voltage Directive 0/5/EU) as well as restriction on usage of hazardous substances in electrical and electronic equipment (RoHS Directive 0/65/EU). This conformity has been proved by tests conducted by Siemens AG in accordance of the Council Directive in accordance with the product standard IEC/EN for the EMC directives, and with the standard IEC/EN for the low-voltage directive. RoHS directive 0/65/EU is met using the standard EN The device has been designed and produced for industrial use. Technical Data For full technical data, refer to the Technical Specification Section of the User Manual. Technical Data Overview Product Family Case and LEDs Measuring Inputs (Current) Auxiliary voltage Communication Protection Functions Binary Input and Binary Output Remote flag Non Directional Self Powered/ Dual Powered Overcurrent and Earth Fault Relay Non draw-out Polycarbonate case (Size standard, Non draw-out design), 9 non-programmable LEDs A or 5 A (ordering option), 50 Hz/60 Hz V to 60 V DC, 60 V to 0 V AC/DC Front communication port: USB (IEC or Modbus RTU) Rear communication port: RS85 (IEC or Modbus RTU) 50, 50G/N, 5, 5G/N, 50LC/SOTF BI and BO * V, 0.0 Ws Local flag Mechanical Flag Indicator * Normal Green colour Trip Red colour Pulse output V, 0. Ws pulse output Overvoltage Category III Pollution Degree Altitude above sea Maximum up to 000 m level Sensitivity Minimum phase current for relay operation Mechanical Specifications Design Enclosure Weight 0 % of nominal current in single phase 0 % of nominal current in three phases Panel mounting, Non draw-out Polycarbonate moulded case IP 5 (front panel) IP 0 (enclosure sides) IP 0 (rear side) Depth is 0 mm.97 kg (appx) 7SR50/7SR50/7SR50/7SR50 Argus Self/Dual Powered Relay Recommended Terminal Lugs Specifications Current Inputs Auxiliary Supply Rear Communication Port Front Communication Port Binary Input/Binary Output/Pulse Output/Flag Output Ground Terminal TE connectivity PIDG series insulated tin plated crimp ring terminal, M.5 stud size,.6 mm² to 6.6 mm², AWG Insulated tin plated crimp pin connector,.6 mm² to 6.6 mm², AWG to 0 AWG Pin type lug/.5 mm control cable USB, Type B Insulated tin plated crimp pin connector,.6 mm² to 6.6 mm², AWG to 0 AWG Tin plated crimp ring terminal, M stud size, mm² to 6 mm², AWG to 0 AWG, Yellow * Depending on the ordering option Siemens Protection Devices Limited 7

8 Inputs and Outputs Binary Outputs Auxiliary Supply Rated Voltage Frequency Allowable Alternating component in DC (Ripple) Typical Power consumption (DC) Typical Power consumption (AC) Max Interruption time (Collapse to Zero) Current Inputs Quantity Rated Current (In) Measuring Range Instrumentation Frequency Rated CT Burden [measured at Nominal Currents ( A and 5 A)] Binary Inputs 60 V to 0 V AC/DC, Tolerance 0 % to +0 % V to 60 V DC, Tolerance 0 % to +0 % (ordering option) 50 Hz (Range: 5 Hz to 55 Hz) 60 Hz (Range: 5 Hz to 66 Hz) 5 % of DC voltage < 7 W < VA 0 ms (9. V DC) 0 ms (8 V DC) 500 ms (0 V AC) x Phase and x Earth A or 5 A (ordering option) 0.xIn to 0xIn ± 5 % (Typical) ( 0.0xIn to xin) ± % (> xin to 0xIn) 50 Hz (Range: 5 Hz to 55 Hz) 60 Hz (Range: 5 Hz to 66 Hz).5 VA per phase and 0. VA earth for A CT input.0 VA per phase and 0. VA earth for 5 A CT input Number Operating Voltage ( NO contact and C/O contact) or ( NO contact and C/O contact) Potential free Operating Mode User selectable - BO and BO Self or Hand/Electrical Reset BO and BO Self Reset (Operated only with Auxiliary input is present) Operating Time from energizing Binary Input Making Capacity: Carry continuously Make and carry (L/R 0 ms and V 00 V AC) Breaking Capacity ( 5 A and 50 V): AC Resistive AC Inductive DC Resistive DC Inductive Electrical Endurance Disengaging time < 0 ms 5 A AC or DC 0 A AC or DC for 0.5 s 0 A AC or DC for 0. s 50 VA 50 VA at p.f W 0 W at L/R 0 ms 50 W at L/R 0 ms 0000 operations, 50 A, 5 A AC < 0 ms Front Communication Port Quantity Electrical USB, Type B connection Protocol Support Modbus RTU, IEC Number or Rear Communication Port BI Threshold / Operating Range Maximum AC/DC current for operation Pick Up Delay Drop Off Delay 9. V DC Range V to 66 V DC 88 V AC/DC Range 88 V to 65 V DC 68 V to 65 V AC.5 ma User selectable 0 to 600 s (up to 0 min) User selectable 0 to 600 s (up to 0 min) Quantity (Optional) Electrical RS85, wire electrical, twisted pair connection Protocol Support Modbus RTU, IEC Rate Data Transfer rate: 00 bps to bps Data Storage Fault Record (Trip Log) Events (Event Log) 0 records 00 events ( ms resolution) Siemens Protection Devices Limited 8

9 Mechanical Tests Test Degree of Protection Standard IEC 6059, IP5 front IP0 rear Vibration IEC , Response and Endurance, Class I Shock and Bump IEC , Shock response and withstand, Class I Bump, Class I Seismic IEC , Class I Contact Performance Electrical Tests Test Insulation Resistance Impulse Voltage Withstand AC Dielectric voltage Slow Damped Oscillatory Wave $ Electrostatic Discharge Electrical Fast Transient or Burst $ IEC 6055-, (Ref: Std IEC 680-) Standard IEC # Insulation resistance >00 MOhm at 500 V DC Test Duration: > 5 s (Between any terminal and earth, independent circuits) ^ IEC # 5 kv,./50 µs, 0.5 J 5, pulses (Between all terminals and case earth and any two independent circuits) ^ IEC #.0 kv AC RMS for min (Between any terminal and earth, independent circuits) ^.0 kv AC RMS for min (across normally open contacts) IEC Common-mode: Test voltage:.5 kv peak voltage Differential mode: Test voltage:.0 kv peak voltage Test duration: s Source impedance: 00 Ω Voltage oscillation frequency: MHz Repetition frequency: 00 Hz IEC kv air discharge 6 kv contact discharge Zone B Test severity Amplitude: ± kv Repetition frequency: 5 khz IEC Surge Immunity * $ Test Level : Zone A Line to Line : 0.5,, kv Line to Earth : 0.5,,, kv Front time/time to half-value :./50 µs Source Impedance : Ohm Radiated Immunity IEC MHz to.0 GHz and. GHz to.7 GHz Field strength: 0 V/m (RMS) Amplitude Modulated: 80 % AM Conducted Radio Frequency Interference $ Power Frequency Magnetic Field IEC khz to 80 MHz, 0 V (RMS), Dwell time: 0.5 s IEC A/m applied min, 00 A/m applied for s Radiated Emissions IEC Conducted IEC Emissions Thermal Withstand IEC # Functional Performance Maximum Allowable Temperature Gradual shutdown/start-up test Continuous withstand: xin Short time withstand: Test duration s 50 A ( A Current input) 50 A (5 A Current input) IEC and IEC IEC Max. temperature limit +00 C IEC Shut down/start up ramp 60 s Power off 5 min * Additional 50 ms DTL pick-up delay applied to binary inputs. # All aspect of IEC have been covered under IEC ^ Flag output and Pulse output are excluded between any terminals and earth. $ Not applicable for Flag output and Pulse output. Siemens Protection Devices Limited 9

10 Climatic Environmental Tests Product Safety Test Temperature IEC /IEC /IEC Ambient Operating Temperature Permissible Temporary Operating Temperature, (Tested for 6 h) * Storage Temperature (Non-operational) -0 C to + 60 C -0 C to + 70 C -5 C to + 70 C * Applicable for the following: Self powered relay with the rated current. Dual powered relay with the rated auxiliary voltage of 0 V DC and above # For battery - To retain the battery life during the transportation and storage, it is recommended to maintain the permissible temperature range from -0 C to +5 C Humidity IEC /IEC /IEC Damp heat test, Cyclic C, RH > 9 % RH (6 cycles) At lower temperature, 97 %, - % + % RH At upper temperature, 9 %, ± % RH Damp heat test, Steady State 0 days at 9 ± % RH, + 0 C Clearances and Creepage Distances IEC/EN : Edition mm IP Rating IEC/EN : Edition IP5 (Front side) IP0 (Rear side) Impulse Voltage IEC/EN : Edition 5 kv, 5, pulses AC Dielectric Voltage Insulation Resistance Protective Bonding Resistance Protective Bonding Continuity IEC/EN : Edition.0 kv AC, 50 Hz, min IEC/EN : Edition 500 V DC, > 5 s, >00 Mohm IEC/EN : Edition < V AC/DC, min, < 0. Ohm IEC/EN : Edition Flammability IEC/EN : Edition Single Fault Condition Performance 50 Instantaneous & DTL OC&EF IEC/EN : Edition Operation Non-directional Elements Phase, Derived Earth, Measured Earth Setting Range Is 0., 0., xIn (50/50N/50G) Time Delay 0,0.0, s Operate Level Iop 00 % Is, ± 5 % Reset level > 0.xIn to 0.9xIn setting: 90 % Iop > xin to 0xIn setting: 9 % Iop Basic Operate time (with auxiliary power / load current): xis 5 ms, ± 5 ms, 5xIs 0 ms, ± 5 ms 50, 50G, 50N Operate time delay Tbasic+Td, ± % or ± 0 ms Inhibited by Binary Input Disengaging time < 50 ms * * With auxiliary power supply Siemens Protection Devices Limited 0

11 5 Time Delayed OC&EF Operation Non directional Elements Phase, Derived Earth, Measured Earth Setting Range Is (5) 0., 0..0xIn Setting Range Is (5G) 0.06, xIn Setting Range Is (5N) 0.0, xIn Time Multiplier 0.0, Time Delay (DTL) 0.00, s Operate Level 0 % Is, ± 5 % or ± %xin Reset level 90 % Iop Operate time (with auxiliary power/ load K top = Tm current) I α [ Is ] IEC A top = + B Tm P [ Is ] IEEE/ANSI ± 5 % or ± 50 ms # Follower Delay 0.00, s Reset IEC/ANSI decaying, 0, s Inhibited by Binary Input # Add current tolerance of ± 5 % or ± %xin (whichever is greater) to the operating time tolerance for TMS below 0. and Is below LC/SOTF (Switch-On-To-Fault) Inrush Response Test Test Conditions Test Result Simulated Inrush current with 5 % nd harmonic content The immunity against inrush currents is up to times of the peak value with 95 % fundamental current (Iset). Setting range,,...0xin Operate level 00 % Is, ± 5 % Disengaging time < 50 ms For more information about 50LC/SOTF, refer to SOTF. Real Time Digital Simulation Test (RTDS) Trip Response at different fault currents Influence on Accuracy Trip response at recurring faults Fault current:.,,, 5, 0 times of set value Influence of DC components DC content at first peak : 00 % Decay time: 5 ms, 50 ms, 00 ms Immunity to inrush current nd harmonic content : up to 8 % Relay behaviour at primary CT saturation Fault currents: 0 A, 0 A, 0 A Fault Current: times and 5 times of set value. Delay between recurring faults: 00 ms, s, s Siemens Protection Devices Limited

12 Case Dimensions Current Inputs Additional Binary Inputs Additional Binary Outputs Rear Communication Port Binary Inputs, Binary Outputs, Flag Output, Pulse Output Auxiliary Power Supply Fig 6a. Front View (7SR50) Fig 6b. Front View (7SR50/7SR50) Fig 7. Rear View (Dual Powered Full Version) Holes Holes mm clearance for Terminal Wiring Fig 9a. Side View (7SR50/7SR50) mm clearance for Terminal Wiring Fig 8a. Panel Cut-out View (7SR50/7SR50) Fig 8b. Panel Cut-out View (7SR50/7SR50) Fig 9b. Side View (7SR50/7SR50) Siemens Protection Devices Limited

13 7SR50/7SR50 Terminal/Wiring Diagram 7SR50 Terminal Label 5 X BI BI X IL A/5A A/5A NO 6 COM 7 BO IL NC BO A/5A 5 IL PO A/5A 6 7 GND 5 6 FO IL 8 NOTES Items shown in BOLD are ordering options Figure 0 Terminal Diagram of Self Powered (7SR50-xGB0-AA0) and (7SR50-xGB0-AA0) Non-Directional Overcurrent and Earth Fault Relay with Flag 7SR50 Terminal Label X BI BI X5 IL A/5A A/5A NO X IL COM NC 5 6 BO BO IL A/5A 5 X PO A/5A 6 7 IL GND 8 NOTES Items shown in BOLD are ordering options Figure Terminal Diagram of Self Powered (7SR50-xGA0-AA0) and (7SR50-xGA0-AA0) Non-Directional Overcurrent and Earth Fault Relay without Flag Siemens Protection Devices Limited

14 7SR50 Terminal/Wiring Diagram 7SR50 Terminal Label - ve X5 BI BI 5 X - ve BI BI X IL A/5A A/5A X TERM A/+ GND B/- RS85 X6 NO COM NC 5 NO 6 COM BO NC BO BO BO IL IL A/5A 5 L N E X GND ve - ve PO FO IL A/5A NOTES Items shown in BOLD are ordering options Figure Terminal Diagram of Dual Powered (7SR50) Non-Directional Overcurrent and Earth Fault Relay Siemens Protection Devices Limited

15 Ordering Information 7SR5 Argus Product description Variants Order No SR5 Argus 7 S R A A 0 Nondirectional Overcurrent and Earth Fault Relay Case, I/O and fascia Size Moulded Case, CT ), BI/ BO, pulse output, 9 LEDs G A/B Size Moulded Case, CT ), BI/ BO, pulse output, 9 LEDs H/J A Size Moulded Case, CT ), BI/ BO, pulse output, 9 LEDs H/J B Size Moulded Case (Height Reduced), CT ), BI/ BO,pulse output, 9 LEDs G A/B Size Moulded Case (Height Reduced), CT ), BI/ BO,pulse output, 9 LEDs H/J A Size Moulded Case (Height Reduced), CT ), BI/ BO,pulse output, 9 LEDs H/J B Measuring Input A, 50/60Hz 5 A, 50/60Hz Auxiliary Voltage Self Powered (CT Powered: BI Threshold 9 V DC) Dual powered (CT Powered+Aux.Powered: to 60 V DC, BI threshold 9V DC) Dual powered (CT Powered+Aux.Powered:60 to 0 V AC/DC, BI threshold 88V 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-85 supporting IEC and Modbus RTU (user selectable setting) Protection Function Packages - Standard version 50 Instantaneous phase fault overcurrent 50G/50N Instantaneous earth fault 5 Time delayed phase fault overcurrent 5G/5N Time delayed earth fault 50LC/SOTF Switch-On-To-Fault A Additional functionality No additional functionality A ) CT is configured as PF + EF Use the following ordering information to order 7SR5 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay battery spares. Variants 7XG900-AA00-0AA0 7XG900-AA00-0AA0 7XG900-AA00-0AA0 Description Main Battery CRA RTC Battery CR6 Main Battery CRA + RTC Battery CR6 Siemens Protection Devices Limited 5

16 Published by and copyright 08 Siemens Protection Devices Limited P.O. Box 8 North Farm Road Hebburn Tyne & Wear NE TZ United Kingdom Phone: + (0) Fax: + (0) marketing.spdl.gb@siemens.com EMEA-C GB June 08 For enquires please contact our Customer Support Center Phone: +9 80/5 87 (hrs) Fax: +9 80/5 7 support.energy@siemens.com Subject to change without notice, Printed in the UK. www. siemens.com/energy Siemens Protection Devices Limited 6