Siemens 7SG23 MSCDN – MP2A Manual
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Siemens 7SG23 MSCDN – MP2A Manual

Siemens 7SG23 MSCDN – MP2A Manual

Capacitor unbalance protection
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7SG23 MSCDN – MP2A
Capacitor Unbalance Protection
Answers for energy
Reyrolle
Protection
Devices

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Summary of Contents for Siemens 7SG23 MSCDN – MP2A

  • Page 1 Reyrolle Protection Devices 7SG23 MSCDN – MP2A Capacitor Unbalance Protection Answers for energy...
  • Page 2 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.
  • Page 3 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.

  • Page 4: Table Of Contents

    Figure 1 – MSCDN-MP2A Overview........................3 Figure 2 – Modular II Relay in E16 case with front panel open................12 Figure 3 – Modular II Relay Rear View ........................12 Figure 4 – Menu Structure ............................13 ©2010 Siemens Protection Devices Limited Chapter 1 Page 2 of 13...

  • Page 5: Introduction

    Each analogue module requires three inputs; for measuring the CT secondary line currents from each of the three phases A, B and C. The unit consists of the following modules: ©2010 Siemens Protection Devices Limited Chapter 1 Page 3 of 13...

  • Page 6: Analogue Inputs

    A watchdog timer continuously monitors the microprocessor. If the software fails to service the watchdog timer the watchdog will time out and cause a reset. The Output Relay modules are blocked in hardware if the watchdog timer expires. ©2010 Siemens Protection Devices Limited Chapter 1 Page 4 of 13...

  • Page 7: Protection Healthy/Defective

    However if there has been a short circuit in a resistor then this will not be true. The waveform records should be downloaded to confirm the actual fault condition that has occurred. An external status input may also be programmed to inhibit the element. ©2010 Siemens Protection Devices Limited Chapter 1 Page 5 of 13...

  • Page 8: Trip Circuit Supervision

    1 millisecond. There is capacity for a maximum of 500 event records that can be stored in the relay and when the event buffer is full any new record will over-write the oldest. The following events are logged: ©2010 Siemens Protection Devices Limited Chapter 1 Page 6 of 13...

  • Page 9: Fault Recording

    ‘Gn’ character in the top left of the display. Settings that do not indicate Gn in the top left corner of the LCD are common to all groups. ©2010 Siemens Protection Devices Limited Chapter 1 Page 7 of 13...

  • Page 10: Password Feature

    Note that the password validation screen also displays a numerical code. If the password is lost or forgotten, this code should be communicated to Siemens and the password can be retrieved. If the code is 1966067850 then 4 spaces have been entered as the password. This is caused by ENTER being pressed three times on the Change Password setting screen.

  • Page 11: Settings Mode

    Which shows that the relay has been set with the standard factory default settings. If this message is displayed ENTER must be pressed to acknowledge this initial condition, the display will then indicate the relay software variant. e.g. MSCDN-MP2A ©2010 Siemens Protection Devices Limited Chapter 1 Page 9 of 13...

  • Page 12: Instruments Mode

    Displays the state of output relays 17 to 29 ---- ---- ---- - Time & Date Time and Date 13/08/2002 10:16:11 1) Display is different when fewer status inputs are fitted ©2010 Siemens Protection Devices Limited Chapter 1 Page 10 of 13...

  • Page 13: Hidden Instruments

    1.0 xIn = 600 counts. 5.8 Fault Data Mode In “FAULT DATA MODE”, the time and date of relay operations are recorded together with a record of the LED flag states. ©2010 Siemens Protection Devices Limited Chapter 1 Page 11 of 13...

  • Page 14: Diagrams

    MSCDN – MP2A Description of Operation 6 Diagrams Figure 2 – Modular II Relay in E16 case with front panel open Figure 3 – Modular II Relay Rear View ©2010 Siemens Protection Devices Limited Chapter 1 Page 12 of 13...

  • Page 15: Figure 4 - Menu Structure

    TO VIEW REYLOGIC ELEMENTS MENU TO VIEW OUTPUT RELAY MENU TO VIEW LED MENU TO VIEW DATA STORAGE MENU TO VIEW COMMUNICATIONS MENU TO VIEW Figure 4 – Menu Structure ©2010 Siemens Protection Devices Limited Chapter 1 Page 13 of 13...
  • Page 16 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.
  • Page 17 51 Backup Overcurrent, ......................... 10 4.11 51N Derived Earth Fault......................... 11 4.12 27 Undervoltage............................. 12 4.13 59DT Definite Time Overvoltage ......................12 4.14 59IT Inverse Time Overvoltage......................13 4.15 VT Supervision............................13 ©2011 Siemens Protection Devices Limited Chapter 2 Page 2 of 13...

  • Page 18: Introduction

    The following document defines the technical and performance specification of the MSCDN Series relays. MSCDN relays are based upon the Siemens Reyrolle Modular II series of protection units. Section 3 describes performance that is common to all Modular II protections.
  • Page 19 ≤ 5% ≤ 5% Bump test 10 gn 16ms Seismic – IEC 60255-21-3 Class 1 Variation Seismic Response ≤ 5% Mechanical Classification Durability In excess of 10 6 operations ©2011 Siemens Protection Devices Limited Chapter 2 Page 4 of 13...

  • Page 20: Auxiliary Energizing Quantity

    ≤ 0.05 VA 110Vrms ≤ 0.01 VA 63.5Vrms 3.5 Rated Frequency Frequency: 50Hz Frequency Range 47Hz to 52Hz Setting variation ≤ 5% Operating time variation ≤ 5% or 5ms ©2011 Siemens Protection Devices Limited Chapter 2 Page 5 of 13...

  • Page 21: Accuracy Influencing Factors

    To meet the requirements of ESI 48-4 then 48V status inputs should be ordered together with external dropper resistors as follows:- Status Input External Dropper Resistances Nominal Voltage Resistor Value (Wattage) 110 / 125V 2k7 ± 5% ; (2.5W) ©2011 Siemens Protection Devices Limited Chapter 2 Page 6 of 13...

  • Page 22: Auxiliary Timer Accuracy

    Reyrolle relays e.g. Argus, Delta, Ohmega, Tau. Up to 254 relays maybe connected to a Sigma network server to provide relay access over an Ethernet local area network (LAN). ©2011 Siemens Protection Devices Limited Chapter 2 Page 7 of 13...

  • Page 23: Irig-B Time Synchronisation

    ≥ 80% of I Reset Repeatability ± 2% Operate Time ± 1% or ± 10ms Operating Time Current Applied Typical 2 x setting 1.5 cycles 4 x setting 1 cycle ©2011 Siemens Protection Devices Limited Chapter 2 Page 8 of 13...

  • Page 24: R1/2 49 Resistor Thermal Overload

    I = measured current = prior current = basic current k = constant τ Factor 1 to 1000 Δ 0.5 minutes 4.8 50 Backup Overcurrent Three phase definite time overcurrent element. ©2011 Siemens Protection Devices Limited Chapter 2 Page 9 of 13...

  • Page 25: Backup Earth Fault

    Pickup 105% of setting ± 5% or ± 0.02 I ≥ 95% of I Reset Repeatability ± 2% Operate Time ± 5% or ± 40ms Frequency Range …15 Harmonic ©2011 Siemens Protection Devices Limited Chapter 2 Page 10 of 13...

  • Page 26: Derived Earth Fault

    Pickup 105% of setting ± 5% or ± 0.02 I Reset ≥ 95% of I Repeatability ± 2% Operate Time ± 5% or ± 40ms Frequency Range …15 Harmonic ©2011 Siemens Protection Devices Limited Chapter 2 Page 11 of 13...

  • Page 27: Undervoltage

    Pickup 100% of setting ± 0.1% or ± 0.1 V ≥ 99.5% of V Reset Repeatability ± 0.1% Frequency Range …15 Harmonic Operating Time Operate Time < 4 cycles ©2011 Siemens Protection Devices Limited Chapter 2 Page 12 of 13...

  • Page 28: 59It Inverse Time Overvoltage

    ≥ 95% of I Reset Repeatability ± 2% Operate Time ± 1% or ± 10ms Operating Time Current Applied Typical 2 x setting 2 cycles 4 x setting 1.5 cycle ©2011 Siemens Protection Devices Limited Chapter 2 Page 13 of 13...
  • Page 29 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.
  • Page 30 3 IEC 60870-5-103 Communications Information....................9 IEC 60870-5-103 Semantics in monitor direction ..................9 IEC 60870-5-103 Semantics in control direction ..................11 4 Reylogic Diagrams ............................12 5 Label Inserts..............................14 ©2010 Siemens Protection Devices Limited Chapter 3 Page 2 of 14...

  • Page 31: Mscdn-Mp2A Relay Setting List

    Gn R2 49 Capacity Alarm Disabled, 50,51…100 % Disabled Selects whether thermal capacity alarm enabled R2 49 Reset Therm State NO, YES Control that allows thermal state to be manually reset ©2010 Siemens Protection Devices Limited Chapter 3 Page 3 of 14...

  • Page 32: Open Circuit Menu

    Selects which input is used to synchronise the real time clock Inverted Inputs NONE, 1…27 NONE Selects which inputs pickup when voltage is removed, often used when monitoring trip circuits. 1) Only when fitted. ©2010 Siemens Protection Devices Limited Chapter 3 Page 4 of 14...

  • Page 33: Reylogic Control Menu

    NONE Aux I/P 16 Operated NONE, 1…29 NONE Aux I/P 17 Operated NONE, 1…29 NONE Aux I/P 18 Operated NONE, 1…29 NONE Aux I/P 19 Operated NONE, 1…29 NONE ©2010 Siemens Protection Devices Limited Chapter 3 Page 5 of 14...

  • Page 34: Led Menu

    Aux I/P 8 Operated NONE, 1…32 Aux I/P 9 Operated NONE, 1…32 Aux I/P 10 Operated NONE, 1…32 Aux I/P 11 Operated NONE, 1…32 Aux I/P 12 Operated NONE, 1…32 NONE ©2010 Siemens Protection Devices Limited Chapter 3 Page 6 of 14...

  • Page 35: Data Storage Menu

    Com2 Data Echo Off, On Enables echoing of data from RX port to TX port when operating relays in a Fibre Optic ring configuration Com2 Direction AUTO-DETECT, FRONT AUTO-DETECT ©2010 Siemens Protection Devices Limited Chapter 3 Page 7 of 14...

  • Page 36: Instruments

    ---- ---- ---- - Time & Date Time and Date 13/08/2002 10:16:11 1) Display is different when fewer status inputs are fitted 2) Display is different when fewer output relays are fitted ©2010 Siemens Protection Devices Limited Chapter 3 Page 8 of 14...

  • Page 37: Iec 60870-5-103 Communications Information

    Status Input 18 Status Input 19 Status Input 20 Status Input 21 Status Input 22 Status Input 23 Status Input 24 Status Input 25 Status Input 26 Status Input 27 ©2010 Siemens Protection Devices Limited Chapter 3 Page 9 of 14...
  • Page 38 Setting G1 selected Setting G2 selected Setting G3 selected Setting G4 selected Trip Circuit Fail Start/Pick-up L1 Start/Pick-up L2 Start/Pick-up L3 Start/Pick-up N General Trip Trip L1 Trip L2 Trip L3 ©2010 Siemens Protection Devices Limited Chapter 3 Page 10 of 14...

  • Page 39: Iec 60870-5-103 Semantics In Control Direction

    Resistor 1 Thermal Alarm Resistor 1 Thermal Trip Resistor 2 Thermal Alarm Resistor 2 Thermal Trip 3.2 IEC 60870-5-103 Semantics in control direction Description GI Initiation Time Synchronisation LED reset ©2010 Siemens Protection Devices Limited Chapter 3 Page 11 of 14...

  • Page 40: Reylogic Diagrams

    IEC Event Code 180-102 CompB_Y_GT_X R1 50 & R1_50_Trip A50_Operated2 CompC_Y_GT_X & A50_Operated3 CompA_X _GT_Y & A50_Operated1 IEC Event Code 180-103 CompB_X _GT_Y R2 50 & R2_50_Trip A50_Operated2 CompC_X _GT_Y & A50_Operated3 ©2010 Siemens Protection Devices Limited Chapter 3 Page 12 of 14...
  • Page 41 400 / 0 FAULT AND WAVEFORM RECORDER LOGIC TRIGD New Data Stored General_Trip & TRIGGERSTORAGE Trigger Storage StatusTrigger TRIGD General_Trip TriggerHold & TRIGFLTREC 0 / 10 TriggerReset 2000 / 10 ©2010 Siemens Protection Devices Limited Chapter 3 Page 13 of 14...

  • Page 42: Label Inserts

    AUX 10 I/P OPERATED AUX 3 I/P OPERATED AUX 11 I/P OPERATED AUX 4 I/P OPERATED AUX 5 I/P OPERATED AUX 6 I/P OPERATED AUX 7 I/P OPERATED AUX 8 I/P OPERATED ©2010 Siemens Protection Devices Limited Chapter 3 Page 14 of 14...
  • Page 43 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.
  • Page 44 Figure 5 – Direct Control System/Data Concentrator Configuration ..............10 Figure 6 – Automatic switchover remote to local control using the SIGMA-3 ............10 Figure 7 – LAN Network connectivity using a SIGMA-3 + Lantronix UDS-10 or equivalent.......11 ©2010 Siemens Protection Devices Limited Chapter 4 – Page 2 of 11...
  • Page 45 Bit (logical 0) sent to signify the start of a byte during data transmission. Stop Bit Bit (logical 1) sent to signify the end of a byte during data transmission. ©2010 Siemens Protection Devices Limited Chapter 4 – Page 3 of 11...
  • Page 46 Communication to the ring may be achieved either locally in the substation or remotely via the Public Switched Telephone Network (PSTN). If remote communication is desired, then additional modem equipment must be installed. ©2010 Siemens Protection Devices Limited Chapter 4 – Page 4 of 11...
  • Page 47 Null Terminal connector which switches various control lines. The fibre-optic converter is then connected to the relay in the following manner : ©2010 Siemens Protection Devices Limited Chapter 4 – Page 5 of 11...
  • Page 48 If it does not, however, set the local modem to mimic the settings of the remote modem described above. ©2010 Siemens Protection Devices Limited Chapter 4 – Page 6 of 11...
  • Page 49 2. Dialogue for purpose of analogue and digital fault waveform extraction and display, setting display and change, event display, instruments etc. 3. Manufacturer specific Figure 1 - Basic Communications Configuration ©2010 Siemens Protection Devices Limited Chapter 4 – Page 7 of 11...
  • Page 50 Personal Computer - Version of the former configuration of Figure 1. It is necessary to make dial-up connection before actual information exchange. Figure 2 - Basic Communications Configuration (Remote) ©2010 Siemens Protection Devices Limited Chapter 4 – Page 8 of 11...
  • Page 51 Figure 3 - Star Type Configuration (Using SIGMA-1 Multiplexer) PSTN : Public Switched Telephone Network Serial optical link Modem Personal Computer Modem Modem Personal Computer Figure 4 - Optical Ring Configuration (Using SIGMA-4 Fibre/RS232 Convertor) ©2010 Siemens Protection Devices Limited Chapter 4 – Page 9 of 11...
  • Page 52 When a portable PC is plugged into the front port of a SIGMA-3 then the remote system is automatically disconnected to ensure local control only. Alternatively on Modular II relays the portable PC may be plugged directly into the front fascia RS232 connection. ©2010 Siemens Protection Devices Limited Chapter 4 – Page 10 of 11...
  • Page 53 Ethernet to RS232 convertor such as the Lantronix UDS-10 or similar device. SIGMA-3 units may be used on a per bay or per substation basis. They provide a single point of contact to the protection relays for monitoring and diagnostic purposes. ©2010 Siemens Protection Devices Limited Chapter 4 – Page 11 of 11...
  • Page 54 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.
  • Page 55 3 Resistor Open Circuit Protection ........................7 Fault Setting Principles ..........................7 Setting Example ............................7 Figures Figure 1 – Exponential heating and cooling curves .................3 Figure 2 – IEC60255-8 cold curve (tau in seconds).................4 ©2010 Siemens Protection Devices Limited Chapter 5 Page 2 of 7...

  • Page 56: Resistor Thermal Overload Protection

    θ = thermal state at time t θ = final thermal state before disconnection of device I = measured thermal current = thermal overload current setting (or k.I θ τ = thermal time constant ©2010 Siemens Protection Devices Limited Chapter 5 Page 3 of 7...
  • Page 57 = 10 tau = 5 tau = 3 tau = 2 tau = 1 Overload Level (Multiple of Setting I θ Figure 2 – IEC60255-8 cold curve (tau in seconds) ©2010 Siemens Protection Devices Limited Chapter 5 Page 4 of 7...

  • Page 58: Setting Example

    × ⎨ ⎬ − ⎩ ⎭ Thus τ ⎛ ⎞ ⎜ ⎟ ⎝ ⎠ 2044 ∴ τ = 9 seconds will be used to satisfy the 50% safety margin. ©2010 Siemens Protection Devices Limited Chapter 5 Page 5 of 7...
  • Page 59 Thermal Protection Settings R1 & R2 49 Overload Setting (using 1A i/p) 0.66 xIn R1 & R2 49 Time Constant 9 seconds R1 & R2 49 Capacity Alarm 91 % ©2010 Siemens Protection Devices Limited Chapter 5 Page 6 of 7...

  • Page 60: Resistor Open Circuit Protection

    Min Value 0.975 x 12/20 = 0.585A Max Value 1.025 x 12/20 = 0.615A Worst case spill under normal loading conditions = 0.03A Open Circuit Protection Settings 50 Setting 0.1 A 50 Delay 1 second ©2010 Siemens Protection Devices Limited Chapter 5 Page 7 of 7...
  • Page 61 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.
  • Page 62 Contents 1 Unpacking, Storage And Handling ........................3 2 Recommended Mounting Position........................3 3 Relay Dimensions .............................. 3 4 Fixings................................3 5 Ancillary Equipment............................4 6 Precautions ................................ 4 ©2010 Siemens Protection Devices Limited Chapter 6 Page 2 of 4...
  • Page 63 If damage has been sustained a claim should immediately be made against the carrier, also inform Reyrolle Protection and the local Siemens office, using the Defect Report Form in the Maintenance section of this manual. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place.
  • Page 64 If the fibre optic cables are anchored using cable ties, these ties must be hand tightened – under no circumstances should cable tie tension tools or cable tie pliers be used. ©2010 Siemens Protection Devices Limited Chapter 6 Page 4 of 4...
  • Page 65 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.
  • Page 66 Checking the thermal characteristic ......................6 Checking the open circuit protection ......................7 9 Primary Injection Tests............................8 10 Tripping And Intertripping Tests ......................... 8 11 Putting Into Service ............................8 ©2010 Siemens Protection Devices Limited Chapter 7 Page 2 of 9...

  • Page 67: Introduction

    Testing of the R1/R2 Open circuit elements requires a minimum of 2 sources to be applied simultaneously. Thermal Overload up to 3 xI Open Circuit up to 2.5 xI Where I is the relay nominal current rating being used. ©2010 Siemens Protection Devices Limited Chapter 7 Page 3 of 9...

  • Page 68: Insulation Resistance Test

    With the relay energised the green LED will provide a steady illumination, all the red LEDs should be out. Operate the TEST/RESET button and check that all the red LEDs are illuminated while the push is depressed. ©2010 Siemens Protection Devices Limited Chapter 7 Page 4 of 9...

  • Page 69: Programming The Relay

    The Omicron set should be connected in accordance with the manufacturer’s instructions. Using the OMICRON I2T Overcurrent ©2010 Siemens Protection Devices Limited Chapter 7 Page 5 of 9...

  • Page 70: Accuracy Of Measurement

    Sufficient time must be allowed between tests to allow the thermal model to reset otherwise operate times may be misleading. To ©2010 Siemens Protection Devices Limited Chapter 7 Page 6 of 9...

  • Page 71: Checking The Open Circuit Protection

    The element should NOT operate at this time. If operation occurs please check the instruments display and ensure that R1 and R2 nominal current meters all display the same current (within defined tolerances). ©2010 Siemens Protection Devices Limited Chapter 7 Page 7 of 9...

  • Page 72: Primary Injection Tests

    The GREEN LED is ON steady. Ensure that all earth links, trip links and inter-trip links are in their normal operational positions. Ensure that the thermal states of the resistor thermal protections are reset ©2010 Siemens Protection Devices Limited Chapter 7 Page 8 of 9...
  • Page 73 Check that the LCD displays the screen below, or the ‘Relay Identifier’ set in the SYSTEM CONFIG MENU. MSCDN-MP2A Replace the cover. The above reading will remain for approximately 1 hour then the screen will go blank. ©2010 Siemens Protection Devices Limited Chapter 7 Page 9 of 9...
  • Page 74 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.
  • Page 75 MSCDN – MP2A Maintenance Contents 1 Maintenance Instructions ..........................3 2 Defect Report Form............................4 ©2010 Siemens Protection Devices Limited Chapter 8 Page 2 of 4...
  • Page 76 It is recommended the following tests are carried out: Visual inspection of the metering display (every year) Operation of output contacts (every 2 years) Secondary injection of each element (every 5 years) ©2010 Siemens Protection Devices Limited Chapter 8 Page 3 of 4...
  • Page 77 Na me, f irst nam e S treet, n umb er P ostco de, city, co untry Da te , Signature Please contact the Siemens representative office in your country to obtain return instructions. ©2010 Siemens Protection Devices Limited Chapter 8 Page 4 of 4...
  • Page 78 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.
  • Page 79 MSCDN – MP2A Diagrams Figures Figure 1 - Panel Fixing ..........................3 Figure 2 - Rear Terminal View ........................ 4 ©2010 Siemens Protection Devices Limited Chapter 9 Page 2 of 4...
  • Page 80 MSCDN – MP2A Diagrams Figure 1 - Panel Fixing ©2010 Siemens Protection Devices Limited Chapter 9 Page 3 of 4...
  • Page 81 MSCDN – MP2A Diagrams Figure 2 - Rear Terminal View ©2010 Siemens Protection Devices Limited Chapter 9 Page 4 of 4...
  • Page 82 Printed in Fürth Printed on elementary chlorine-free bleached paper. All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affili- ates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases.

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