ROOTECH ACCURA 3500 User Manual
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ROOTECH ACCURA 3500 User Manual

High accuracy digital power meter
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  • Page 1 Page 1...
  • Page 2 Notice Symbols Caution Indicates the presence of dangerous voltage which can cause severe injury or death if proper precautions are not followed. Caution Alerts users of the presence of hazards which can cause injury to persons, property damage or damage to the device if proper precautions are not followed. Note Indicates major instructions for the installation, operation, and maintenance of the product.
  • Page 3 About the Manual Rootech, Inc. reserves the right to make changes in the product specifications shown in this User Guide without prior notice. We recommend that customers should obtain the latest information on product specifications and the manual before making orders.
  • Page 4 Rootech will decide at its discretion whether to repair or replace it or give a refund for the product for when the warranty period for the product expired or issues related to the product are not applicable for warranty terms and conditions.
  • Page 5 Rootech shall not be liable for any other claims except the claims made by customers, including the original purchaser, his employees, agents, or contractors for any loss, damage, or expense incurred related to the purchased product when the above warranty terms and conditions are not fulfilled.
  • Page 6 Revision History The following versions of the Accura 3500 User’s Guide have been released. Revision Revision date Description Firmware version Revision 1.0 2006. 06. 30 Initial draft Revision 1.1 2007. 04. 24 Adding a menu item of extension module 1.22 configuration Revision 1.2...

  • Page 7: Table Of Contents

    Contents Chapter 1 Introduction ........................11 Overview ............................11 Power Measurements, Digital/Analog Input and Output Integration .......... 11 Accuracy, Power Quality ..........오류! 책갈피가 정의되어 있지 않습니다. CE/UL Safety and Reliability ....................11 Easy Adding of Modules ......................11 Features ............................12 Measurement .........................
  • Page 8 Step 3: Wire the RS485 Communication ..................28 Step 4: Wire the Power Supply and Ground Terminal ............... 29 Power Supply.......................... 29 Ground Terminal ........................29 Step 5: Add a Basic Module[DIO module] ..................30 Step 6: Wire a Basic Module ......................31 DIO Module ...........................
  • Page 9 Figures Fig 1.1 Front Side ........................17 Fig 1.2 Rear Side ........................17 Fig 1.3 Basic Module[DIO Module] Rear Side ................17 Fig 1.4 Front View ........................18 Fig 1.5 Rear View ........................18 Fig 1.6 Side View ........................18 Fig 1.7 Side View[one extension module can be added as option when ordering] ......
  • Page 10 Fig 1.34 AI Module ........................ 39 Fig 1.35 Analog Input......................39 Fig 1.36 AO Module ......................40 Fig 1.37 Analog Output ......................40 Fig 1.38 A4P2 Module ......................41 Fig 1.39 A2P4 Module ......................41 Fig 1.40 A4P2/ A2P4 Module Analog Output ................41 Fig 1.41 Pulse Output ......................

  • Page 11: Chapter 1 Introduction

    Easily Attachable I/O Modules A variety of I/O expansion modules can be easily attached to the rear side of the Accura 3500 device. The I/O modules available include the digital input, digital output, analog input, and analog output modules.

  • Page 12: Features

    Features Measurement ◼ 64 samples/cycle True RMS ◼ IEC 62053-22 Class 0.5S ◼ 50, 60Hz ◼ 4 Quadrant Energy kWh/kVARh received , kWh/kVARh delivered kWh/kVARh net[kWh/kVARh received - kWh/kVARh delivered] kWh/kVARh total[kWh/kVARh received + kWh/kVARh delivered] ◼ Phase voltage, line to line voltage, current ◼...

  • Page 13: Communication

    Communication RS485 Port[rear] ◼ Modbus RTU Protocol Baud rate: 1,200 ~ 57,600bps Power Supply AC 85 ~ 265V, 50/60Hz ◼ DC 100 ~ 300V ◼ Burden: 10VA ◼ Page 13...

  • Page 14: Applications

    Easily Expandable Module Structure to Suit Various Needs in the Field I/O expansion modules can be easily added to the rear side of Accura 3500. Thus, its modular structure helps to meet requirements for various applications in the field. In the existing IBS(Intelligent Building System), all I/O modules should be connected to the DDC panel.

  • Page 15: Parameters

    Parameters Item Realtime Average Total Maximum Minimum Predicted Phase voltage ■ ■ ■ ■ Line to line voltage ■ ■ ■ ■ Current ■ ■ ■ Power Active ■ ■ ■ Reactive ■ ■ ■ Apparent ■ ■ ■ Energy Active ■...

  • Page 16: Chapter 2 Mounting

    Chapter 2 Mounting Environmental Conditions The Accura 3500 should be mounted in a dry, dirt free location away from heat sources and very high electric fields. To operate properly and effectively, environmental conditions should range within the following guidelines Environmental Conditions...

  • Page 17: Before You Begin

    Before You Begin Before installing the meter, observe the instructions in this guide and read the safety precautions presented on the “Installation Considerations” page. Caution Power up after the voltage and current wiring is completed. Meter Overview Fig 1.1 Front Side Fig 1.2 Rear Side Fig 1.3 Basic Module[DIO Module] Rear Side Page 17...

  • Page 18: Meter Dimensions

    Meter Dimensions Fig 1.4 Front View Fig 1.5 Rear View Fig 1.7 Side View[one extension module can be added as Fig 1.6 Side View option when ordering] Page 18...

  • Page 19: Step 1: Mounting

    Step 1: Mounting Sequence Remove connector on the bottom of the meter. Fit the meter into cutout[ANSI 4” or DIN96]. Fix the meter onto the panel by turning the mounting nut. When conforming to the DIN96 standard, there is no need to drill holes on the panel. Fig 1.8 ANSI 4”...

  • Page 20: Step 2: Voltage And Current Inputs

    Step 2: Voltage and Current Inputs Fig 1.10 Voltage and Current Connector Voltage Input Item Description Pin name Connector Terminal block Wire spec 2.1 to 3.5 mm [ 14 to 12 AWG] Rating 0 ~ 600V 3 ~ L-L[Line to line], 0 ~ 457V 3 ~ L-N[Line to neutral] Burden 0.02VA/phase @220V Impedance...

  • Page 21: Current Input

    Current Input Item Description Pin name 1S, 2S, 3S, 1L, 2L, 3L Connector Terminal block[Busbar] Wire spec 2.1 to 6 mm [ 14 to 10 AWG] Ratings 5A nominal/ 10A full scale 3 ~ Burden Maximum 0.005A/phase @10A Pollution degree 2, Installation Category Ⅲ Compliance CT[Current Transformer] Item...

  • Page 22: Wiring Diagram Using External Pts

    Wiring Diagram Using External PTs Caution Failure to observe the following wiring diagrams may result in severe injury or death. Be sure to use shorting block when connecting the meter to CT secondaries. Fig 1.11 Single Phase 2 Wire Connection, Wiring Mode = 1P2U Caution In single phase 2 wire mode, be sure to use V , 1S, 1L terminals as the above.
  • Page 23 Fig 1.12 Three Phase 3 Wire Open Delta Connection Using 2 CTs, Wiring Mode = 3P3O Caution In three phase 3 wire open delta connection mode, be sure to connect V to V as the above. Fig 1.13 Three Phase 3 Wire Open Delta Connection Using 3 CTs, Wiring Mode = 3P3O Caution In three phase 3 wire open delta connection mode, be sure to connect V to V...
  • Page 24 Fig 1.14 Three Phase 4 Wire Connection Using 3 PTs and 3 CTs, Wiring Mode = 3P4U Page 24...

  • Page 25: Direct Diagram Using No Pts

    Direct Connection Diagram Using No PTs Caution Failure to observe the following wiring diagrams may result in severe injury or death. Be sure to use shorting block when connecting the meter to CT secondaries. Fig 1.15 Single Phase 2 Wire Direct Connection, Wiring Mode = 1P2U Caution In single phase 2 wire direct connection mode, use PTs for voltages over 457V.
  • Page 26 Fig 1.16 Single Phase 3 Wire Direct Connection Using 2 CTs, Wiring Mode = 1P3U Caution In single phase 3 wire direct connection mode, use PTs for voltages over 457V. be sure to use V , 1S, 1L, 3S, 3L terminals as the above. Fig 1.17 Three Phase 3 Wire Open Delta Direct Connection, Wiring Mode = 3P3O Caution In three phase 3 wire open delta direct connection mode, use PTs for voltages over 457V [line to...
  • Page 27 Fig 1.18 Three Phase 3 Wire Open Delta Direct Connection Using 3 CTs, Wiring Mode = 3P3O Caution In three phase 3 wire open delta direct connection mode, use PTs for voltages over 457V [line to line]. be sure to connect V to V as the above.

  • Page 28: Step 3: Wire The Rs485 Communication

    Using a UL2919 cable is recommended for communication. Comm Indicator The Comm LED blinks green when the meter is transmitting data. Protocol The meter provides Modbus RTU protocol. Refer to the Accura 3500 Communication User’s Guide for details about the Modbus protocol. Page 28...

  • Page 29: Step 4: Wire The Power Supply And Ground Terminal

    Step 4: Wiring the Power Supply and Ground Terminal Fig 1.21 Wiring of Power Supply and Ground Terminal Power Supply Item Description Pin name PP[+/L], PN[-/N] Connector Screw terminal[Pluggable] Wire spec 1.25 to 3.5 mm [ 24 to 14 AWG] Ratings AC 85 ~ 265V, 50/60Hz ~, DC 100 ~ 300V Compliance...

  • Page 30: Step 5: Add A Basic Module[Dio Module]

    Note Wire the meter’s ground terminal G to switchgear earth ground. Do not use metal door hinges as a ground path Step 5: Adding the Basic Module[DIO Module] Fig 1.22 Adding the Basic Module Caution When the basic module[DIO module] is not added or detected, the SETUP LED blinks. Page 30...

  • Page 31: Step 6: Wire A Basic Module

    Step 6: Wiring the Basic Module DIO Module The Accura 3500 is provided with the DIO module as the basic module. Fig 1.23 DIO Module NC means “No Connection”. 8 Digital Input Channels Ch 1 Ch 2 Ch 3 Ch 4...
  • Page 32 Fig 1.24 Digital Inputs Caution Applying the external voltage to digital inputs causes damage to the meter because DC 8V is internally applied to dry contacts. 2 Digital Output Channels Ch 1 Ch 2 Pin name Ground and DO are different grounds according to each channel. Item Description Connector...

  • Page 33: Fig 1.25 Dc Relay Application

    Fig 1.25 DC Relay Application Fig 1.26 AC Relay Application Note Use Clamp Diode or ZNB in order not to apply more than 350V peak to digital output. Caution Use external relay in order to control more than the maximum load, AD/DC 400V 350mA, of digital output.

  • Page 34: Step 7: Wire The Power Supply And Ground Terminal Of A Basic Module

    Step 7: Wiring the Power Supply and Ground Terminal of the Basic Module Fig 1.27 Wiring of Power Supply and Ground Terminal of the Basic module Power Supply Item Description Pin name PP[+/L], PN[-/N] Connector Screw terminal[Pluggable] Wire spec 1.25 to 3.5 mm [ 24 to 14 AWG] Ratings AC 85 ~ 265V, 50/60Hz ~, DC 100 ~ 300V...

  • Page 35: Step 8: Add A Extension Module

    Note Wire the meter’s ground terminal G to switchgear earth ground. Do not use metal door hinges as a ground path Step 8: Adding the Expansion Module Fig 1.28 Adding the Expansion Module Caution When an expansion module is added, be sure to manually set the module type to one of DI, DO, AI, AO, A4P2, or A2P4 modules in a menu item[refer to expansion module configuration] of system mode.

  • Page 36: Step 9: Wire An Extension Module

    Step 9: Wiring the Expansion Module Only one of four modules[DI, DO, AI, AO] can be chosen as an option when ordering the product. DI Module Fig 1.29 DI Module NC means “No Connection”. 12 Digital Input Channels Ch 1 Ch 2 Ch 3 Ch 4...

  • Page 37: Do Module

    Fig 1.30 Digital Input Caution Applying the external voltage to digital inputs causes damage to the meter because DC 8V is internally applied to dry contacts. DO Module Fig 1.31 DO Module NC means “No Connection”. 4 Digital Output Channels Ch 1 Ch 2 Ch 3...

  • Page 38: Fig 1.32 Dc Relay Application

    Item Description Connector Screw Terminal[Pluggable] Wire spec 1.25 to 3.5 mm [ 24 to 14 AWG] Type Latch or Pulse Max Load AC/DC 400V 350mA[1000mA Peak] On command → “on” outputs Latch Off command → “off” outputs On command → “on” outputs during the Pulse width time and returns to “off” Pulse Off command →...

  • Page 39: Ai Module

    AI Module Fig 1.34 AI Module NC means “No Connection”. 6 Analog Input Channels Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6 Pin name Ground , and are different grounds according to each channel. Item Description Connector Screw terminal[Pluggable] Wire spec...

  • Page 40: Ao Module

    AO Module Fig 1.36 AO Module NC means “No Connection”. 6 Analog Output Channels Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6 Pin name Ground ,and are different grounds according to each channel. Item Description Connector Screw terminal[Pluggable] Wire spec 1.25 to 3.5 mm...

  • Page 41: A4P2/A2P4 Module

    A4P2/A2P4 Module Fig 1.38 A4P2 Module Fig 1.39 A2P4 Module NC means “No Connection”. Analog Output Channels A4P2 Module Ch 1 Ch 2 Ch 3 Ch 4 Pin name Ground A2P4 Module Ch 1 Ch 2 Pin name Ground are different grounds according to each channel. Item Description Connector...
  • Page 42 Caution When voltage drop exceeds 12V, 4 ~ 20mA current of analog output is not guaranteed. Pulse Output Channels A4P2 Module Ch 1 Ch 2 Pin name Ground A2P4 Module Ch 1 Ch 2 Ch 3 Ch 4 Pin name Ground are different grounds according to each channel.

  • Page 43: Step 10: Wire The Power Supply And Ground Terminal Of A Expansion Module

    Step 10: Wiring the Power Supply and Ground Terminal of the Expansion module Fig 1.42 Wiring of Power Supply and Ground Terminal of the Expansion Module Power Supply Item Description Pin name PP[+/L], PN[-/N] Connector Screw terminal[Pluggable] Wire spec 1.25 to 3.5 mm [ 24 to 14 AWG] Ratings AC 85 ~ 265V, 50/60Hz ~, DC 100 ~ 300V...

  • Page 44: Ground Terminal

    Ground Terminal Item Description Pin name Connector Screw Terminal[Pluggable] Wire spec 2.1 to 3.5 mm [ 14 to 12 AWG] Note Wire the meter’s ground terminal G to switchgear earth ground. Do not use metal door hinges as a ground path Step 11: Powering Up the Meter Close the PT fuses( or direct voltage input fuses).

  • Page 45: Chapter 3 Meter Operation/Setup

    Chapter 3 Meter Operation/Setup Each of these functions can be accomplished by pressing the Menu, Up, Down, and Enter buttons on the front panel. Item Description Display mode View parameter measurements Setup mode Configure parameters[wiring, communication, etc.] Reset mode Reset energy, demand, maximum, and minimum values . System mode View meter system information[meter option, firmware version].

  • Page 46: Display Mode

    Display Mode In Display mode, you can view values from these measurement groups. Fig 2.1 Measurement Groups Measurement Group Parameters Measured , kW, kVAR, kVA, PF FUND DMD, PrE(Prediction) , MAX, MIN kWh rEc(Receive) , kWh dEL(Deliver) , kWh tot(Total) , kWh nEt(Net) , kVARh, kVAh, Hz 1.
  • Page 47 Button Functions in Display Mode Button Function Sequentially selects measurement group. [Group A→ Group B→ Group C→ Group D] Move to the previous measurement group. Move to the next measurement group. Parameter Display in the Following Order In Group A Order Parameter A, B, C Phase...
  • Page 48 DMD, MAX Max demand power √ kVAR DMD, MAX Max demand reactive power √ DMD, MAX Max demand apparent power √ DMD, PrE[Prediction] Prediction demand power √ kVAR DMD, PrE[Prediction] Prediction demand reactive power √ DMD, PrE[Prediction] Prediction demand apparent power √...

  • Page 49: Setup Mode

    Setup Mode In Setup mode, You can set up menus, such as PT/CT ratio, wiring, and communication after mounting the meter. Button Functions in Setup Mode Button Function Enter setup mode by pressing the Up and Down buttons at the same time.
  • Page 50 Single phase 2 wires Single phase 3 wires Three phase 3 wires, Open Delta √ Three phase 4 wires Comm address 1 ~ 247 √ Protocol Modbus RTU Rootech RTM Modbus RTU Speed[bps] 1200bps 2400bps 4800bps √ 9600bps 19200bps 38400bps 57600bps √...

  • Page 51: Reset Mode

    Reset Mode In Reset Mode, you can reset Energy, Demand, and the Maximum/minimum values. Button Functions in Reset Mode Button Function Enter reset mode by pressing the Down and Enter buttons at the same time. Move to the previous menu screen. Move to the next menu screen.

  • Page 52: System Mode

    System Mode You can view system information, such as product number, version, demand time, frequency selection, and etc. Button Functions in System Mode Button Function Enter System Mode Move to the previous menu screen. Move to the next menu screen. Enter system edit mode to configure the displayed menu value.
  • Page 53 Menu Items Order Menu Item Range Default Demand time 1 ~ 60 Frequency 50Hz, 60Hz sion module configuration No module √ DI module DO module AI module AO module A4P2 module A2P4 module √ Reactive power calculation Method 1 Method 2 √...

  • Page 54: Reactive Calculation Method

    Reactive Power Calculation Rootech supports two methods for accurate calculation of reactive power. Method 1: General Calculation Method 1 is used to obtain reactive power, and apparent power by using calculation of vector apparent power.  − PF = Fig 2.2 P , Q[according to general calculation]...
  • Page 55 Method 2: Calculation of Harmonics Method 2 is used to obtain reactive power from apparent and active power, and the overall apparent power by using calculation of vector apparent power.   PF = Note P can be a positive or negative value, while Q is always a positive value. Page 55...

  • Page 56: Module Mode

    Module Mode Module mode has both display and setup menus. In module display menu You can view information of module and its channels, and in module setup menu configure channels of module. Module Display Menu Button Functions in Module Mode Button Function Enter module mode.

  • Page 57: Fig 2.3 Dio Module Channel Information

    Fig 2.3 DIO module channel information Fig 2.4 DI module channel information Fig 2.5 DO module channel information Fig 2.6 AI module channel information Fig 2.7 AO module channel information When AI or AO module is added on the meter, the channel information of the module is not displayed on the meter, but available only on RS485 or IrDA[with PDA].

  • Page 58: Fig 2.8 A4P2 Module Channel Information

    Fig 2.8 A4P2 module channel information † Fig 2.9 A2P4 module channel information † Page 58...

  • Page 59: Module Setup Menu

    Module Setup Menu Button Functions in Module Mode Button Function Enter module mode by pressing the Up and Down buttons at the same time. Move to the previous menu screen. Move to the next menu screen. Enter module edit mode to configure the displayed menu value. →...
  • Page 60 Note In module edit mode, pressing button exits system edit mode and moves to display mode, without saving the changed value of menu item. Page 60...
  • Page 61 Menu Items of DIO Module Order Menu Item Range Digital output channels of the DIO module Fig 2.10 Digital output type Latch Pulse Pulse width time 0.1 to 10.0s Digital output channel 2 of the DIO module Fig 2.11 Digital output type The same as channel 1 Pulse width time The same as channel 1...

  • Page 62: Fig 1.23 Dio Module

    Fig 2.10 DIO module digital output channel 1 setup Fig 2.11 DIO module digital output channel 2 setup Fig 2.12 DO module digital output channel 1 setup Fig 2.13 DO module digital output channel 2 setup Fig 2.14 DO module digital output channel 3 setup Fig 2.15 DO module digital output channel 4 setup 1.
  • Page 63 A4P2 Module Menu Items order Menu Item Range Default A4P2 module analog output channel 1 Parameter selection Not selected Voltage for phase a √ [Fig 2.16] Voltage for phase b Voltage for phase c Line Voltage phase ab Line Voltage phase ab Line Voltage...
  • Page 64 Parameter low limit The same with channel 1 Type The same with channel 1 A4P2 module analog output channel 4 Parameter selection The same with channel 1 Power factor √ Parameter high limit The same with channel 1 Parameter low limit The same with channel 1 Type The same with channel 1...
  • Page 65 0.01 ~ 99999.99 Scale[kWh or kVarh/ pulse] 110V x PT ratio x 5A x CT ratio x 3 / 3600 Default is automatically changed by PT ratio, CT ratio. lag[lead] is displayed as LG[LD] in LED segment. Page 65...
  • Page 66 Analog output calculation The example of 4 ~ 20mA analog output by value of parameter selected is shown. Condition: high limit[high]→ 457V, low limit[low]→ 0V, value of parameter[x]→ 380V Analog output[y]= 16 x (380-0)/ (457-0)+4 = 17.3mA Analog output calculation by power factor Condition: high limit[high]→...
  • Page 67 Fig 2.16 Analog output channel 1 of A4P2 module Fig 2.17 Pulse output channel 1 of A4P2 module Page 67...
  • Page 68 Menu Items of A2P4 Module Order Menu Item Range Default Analog output channel 1 of A2P4 module Parameter selection The same with channel 1 of A4P2 module Voltage a √ [Fig 2.18] Parameter high limit The same with channel 1 of A4P2 module Parameter low limit The same with channel 1 of A4P2 module Type...
  • Page 69 [kWh or kVarh/pulse] Pulse output channel 4 of A2P4 module Parameter selection kWh received kWh delivered kVARh received kVARh delivered √ Scale 0.01 ~ 99999.99 [kWh or kVarh/pulse] Page 69...
  • Page 70 Fig 2.18 Analog output channel 1 of A2P4 module Fig 2.19 Pulse output channel 1 of A2P4 module Page 70...

  • Page 71: Appendix A Standard Specification

    Appendix A Specifications Voltage Input Rating 0 to 600V 3 ~ L-L, 0 to 457V 3 ~ L-N In three phase 3 wire open delta direct connection mode, use PTs for voltages over 457V[line to line] Calibration 60 to 220V per phase Burden 0.02VA/phase @ 220V Pickup Voltage...

  • Page 72: Appendix B Standard Compliance

    Appendix B Standard Compliance Accuracy IEC62053-22 Class 0.5S Safety UL 61010-2, 2 edition(IEC 61010) Electrostatic Discharge(ESD) IEC 61326-1(IEC 61000-4-2) EM Field IEC 61326-1(IEC 61000-4-3) Electric Fast Transient IEC 61326-1(IEC 61000-4-4) Surge Immunity IEC 61326-1(IEC 61000-4-5) Conducted Radio Frequency Immunity IEC 61326-1(IEC 61000-4-6) Rated Power Frequency Magnetic Field IEC 61326-1(IEC 61000-4-8) Voltage Dip/Short Interruptions...

  • Page 73: Appendix C Test Report

    Measuring Test IEC 62053-22, Electricity Meter Equipment: active energy for Class 0.5S Current range Power factor Class 0.2S/ 0.5S Accura 3500 0.05A < I < 0.25A ± 0.4%/ ± 1.0% ± 0.4% 0.25A < I < 10.0A ± 0.2%/ ± 0.5% ±...

  • Page 74: Reliability Test

    Class 0.5S means IEC62053-22 Class 0.5S. True RMS Accuracy Accura 3500 Harmonic Voltage Current ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0% * Voltage: 220V, Tested percentages of harmonic-to-fundamental: 50% Current: 5A, Tested percentages of harmonic-to-fundamental: 50%...

  • Page 75: Appendix D Order Information

    Appendix D Ordering Information Model Option[Expansion Module] Description Accura 3500 8 digital input channels, 2 digital output channels 4 digital output channels 6 analog input channels 6 analog output channels 4 analog output channels A4P2 2 pulse output channels 2 analog output channels...
  • Page 76 3300S/3300, Accura 3500S/3500, Accura 3550S/3550, Accura 3700, Accura 5500, and Accura 7500 are trademarks of Rootech Inc. Contact us for detailed product specifications and ordering information. Information contained herein is subject to change without notice. CopyrightⓒRootech Inc. Printed In Korea...

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