ROOTECH ACCURA 3550 User Manual
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ROOTECH ACCURA 3550 User Manual

Digital power meter for rectifier panel
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ACCURA 3550
Digital Power Meter for Rectifier Panel
Replaces TD and RTU
User Guide[English]
Rev 1.8
2018/01/02

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Summary of Contents for ROOTECH ACCURA 3550

  • Page 1 ACCURA 3550 Digital Power Meter for Rectifier Panel Replaces TD and RTU User Guide[English] Rev 1.8 2018/01/02...
  • Page 2 Page 2...
  • Page 3 Indicates alternative voltage or current. Indicates direct voltage or current. Installation Considerations Installation and operation of Accura 3550 meter should be performed only by qualified, competent personnel that have appropriate training and experience with high voltage and current devices. Caution Failure to observe the following instructions may result in severe injury or death.
  • Page 4 Warning Observe the following instructions, or permanent damage to the meter may occur. Do not apply Accura 3550 to voltages and currents that exceed Input ratings of PT and  Manual Rootech Inc. reserves the right to make changes in the device specifications shown in this User Guide without notice.
  • Page 5 Rootech’s liability shall be limited to twice the amount of the relevant purchased product. Rootech shall not be liable for any claim- other than a claim solely for the breach of one of the above warranties that is made in accordance with the above described procedures- made by the...
  • Page 6 Only the terms expressed in these limited Warranties shall apply and no distributor, corporation or other entity, individual or employee of Rootech or any other entity is authorized to amend, modify or extend the Warranties in any way.
  • Page 7 Standard Compliance CE Approved Process Control Equipment EN61326 and IEC61010 E324900 QMS-1347 KAB-QC-09 Page 7...
  • Page 8 Revision History The following versions of the Accura 3550 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 Modifying basic module recognition 1.17 Revision 1.2 2007.

  • Page 9: Table Of Contents

    Contents Chapter 1 Introduction ........................... 13 Overview ......................................13 AC/DC Measurements dedicated to Rectifier ....................13 Accuracy, Power Quality ..............................13 CE/UL Safety and Reliability ............................13 Features ......................................14 Measurement ..................................14 Power Quality ..................................14 Basic Module ..................................14 Communication .................................
  • Page 10 Ground Terminal ................................30 Step 5: Add a Basic Module[DC module] ........................31 Step 6: Wire a Basic Module ..............................32 DC Module ..................................32 Step 7: Wire the Power Supply and Ground Terminal of a Basic module ............. 35 Power Supply..................................
  • Page 11 Figures Fig 1.1 Front Side ................................18 Fig 1.2 Rear Side ................................18 Fig 1.3 Basic Module[DC Module] Rear Side ..................... 18 Fig 1.4 Front View ................................19 Fig 1.5 Rear View................................19 Fig 1.6 Side View ................................19 Fig 1.7 ANSI 4” .................................. 20 Fig 1.8 DIN96 ..................................
  • Page 12 Fig 2.7 DC module digital input channel 2 of rectifier fault ..............50 Fig 2.8 DC module digital input channel 3 of rectifier fault ..............51 Fig 2.9 DC module digital input channel 4 of rectifier fault ..............51 Fig 2.10 DC module digital output channel 1 setup..................51 Page 12...

  • Page 13: Chapter 1 Introduction

    Overview AC/DC Measurements dedicated to Rectifier Accura 3550 is a high accuracy digital power meter dedicated to rectifier, suited to power measurements and DC measurements. In rectifier, the existing customers obtain dc voltage and current from analog inputs of RTU after converting signals using separate tranducer. The signal conversion several times deteriorates the overall data reliability, and causes the rising of costs.

  • Page 14: Features

    Features Measurement  64 Sampling/Cycle True RMS  IEC 62053-22 Class 0.5S  50, 60Hz  Phase voltage, line to line voltage, current  Power, energy, power factor, frequency  Fundamental component, True RMS of current  4 Quadrant Power †...

  • Page 15: Applications

    Measurements dedicated to Rectifier Rectifier panel guarantees reliability of control power in energy system during the interruption of power. Accura 3550 is a high accuracy digital power meter dedicated to rectifier, suited to power measurements, DC measurements, and rectifier status.

  • Page 16: Parameters

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

  • Page 17: Chapter 2 Mounting

    Chapter 2 Mounting Environmental Conditions The Accura 3550 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 Items...

  • Page 18: 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. Danger 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[DC Module] Rear Side Page 18...

  • Page 19: Meter Dimensions

    Meter Dimensions Fig 1.4 Front View Fig 1.5 Rear View Fig 1.6 Side View Page 19...

  • Page 20: Step 1: Mounting

    Step 1: Mounting Sequence Remove connector on the bottom of the meter. fit the meter into cutout[ANSI 4” or DIN96] Fig 1.7 ANSI 4” Fig 1.8 DIN96 Note The meter is mounted on switchgear boards (metal cabinet) in electrical facilities. Page 20...

  • Page 21: Step 2: Voltage And Current Inputs

    Step 2: Voltage and Current Inputs Fig 1.9 Voltage and Current Connector Voltage Input Pin name Connector Terminal block Wire 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 22: Current Input

    Current Input Pin name 1S, 2S, 3S, 1L, 2L, 3L Connector Terminal block[Busbar] Wire 2.1 to 6 mm [ 14 to 10 AWG] Ratings 5A nominal/ 10A full scale 3 ~ Burden Maximum 0.005A/phase @10A Compliance Pollution degree 2, Installation Category Ⅲ CT[Current Transformer] Compliance UL61010-1;...

  • Page 23: Wiring Diagram Using External Pts

    Wiring Diagram Using External PTs Danger 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 1.10 Single Phase 2 Wires, Wiring Mode = 1P2U Warning In single phase 2 wires, be sure to use V , 1S, 1L terminals as the above.

  • Page 24: Fig 1.11 Three Phase 3 Wire Open Delta Using 2Cts, Wiring Mode = 3P3O

    Fig 1.11 Three Phase 3 Wire Open Delta Using 2CTs, Wiring Mode = 3P3O Warning In three phase 3 wire open delta, be sure to connect V to V as the above. Fig 1.12 Three Phase 3 Wire Open Delta Using 3CTs, Wiring Mode = 3P3O Warning In three phase 3 wire open delta, be sure to connect V to V...

  • Page 25: Fig 1.13 Three Phase 4 Wires Using 3 Pts And 3 Cts, Wiring Mode = 3P4U

    Fig 1.13 Three Phase 4 Wires Using 3 PTs and 3 CTs, Wiring Mode = 3P4U Page 25...

  • Page 26: Direct Diagram Using No Pts

    Direct Diagram Using No PTs Danger 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 1.14 Single Phase 2 Wire Direct , Wiring Mode = 1P2U Warning In single phase 2 wires, be sure to use V , 1S, 1L terminals as the above.

  • Page 27: Fig 1.15 Single Phase 3 Wire Direct Using 2 Cts, Wiring Mode = 1P3U

    Fig 1.15 Single Phase 3 Wire Direct Using 2 CTs, Wiring Mode = 1P3U Warning In single phase 3 wires, be sure to use V , 1S, 1L, 3S, 3L terminals as the above. Fig 1.16 Three Phase 3 Wire Open Delta Direct, Wiring Mode = 3P3O Warning In three phase 3 wire open delta direct, use PTs for voltages over 457V [line to line].

  • Page 28: Fig 1.17 Three Phase 3 Wire Open Delta Direct Using 3 Cts, Wiring Mode = 3P3O

    Fig 1.17 Three Phase 3 Wire Open Delta Direct Using 3 CTs, Wiring Mode = 3P3O Warning In three phase 3 wire open delta direct, use PTs for voltages over 457V [line to line]. be sure to connect V to V as the above.

  • Page 29: Step 3: Wire The Rs485 Communication

    UL2919 cable is recommended for communication. Comm Indicator Comm LED shows green when the meter is transmitting data. Protocol The meter provides Modbus RTU protocol. Refer to the Accura 3550 Communication User’s Guide for Modbus protocol implementation details. Page 29...

  • Page 30: Step 4: Wire The Power Supply And Ground Terminal

    Step 4: Wire the Power Supply and Ground Terminal Fig 1.20 Wiring of Power Supply and Ground Terminal Power Supply Pin name PP[+/L], PN[-/N] Connector Screw terminal[Pluggable] Wire 1.25 to 3.5 mm [ 24 to 14 AWG] Ratings AC 85 ~ 265V, 50/60Hz ~, DC 100 ~ 300V Compliance Pollution degree 2 Burden...

  • Page 31: Step 5: Add A Basic Module[Dc Module]

    Step 5: Add a Basic Module[DC module] Fig 1.21 Adding of a Basic Module Warning When a basic module[DC module] is not added or recognized, SETUP LED blinks Page 31...

  • Page 32: Step 6: Wire A Basic Module

    Step 6: Wire a Basic Module DC Module The Accura 3550 is provided with a DC module as a basic module. Fig 1.22 DC Module NC means “No Connection”. DC Voltage/Current DC voltage Recfifier current Battery current Pin name OUT+...
  • Page 33 Digital Input 4 Channels Ch 1 Ch 2 Ch 3 Ch 4 Pin name Ground Both of DI are internally common-connected. Connector Screw Terminal[Pluggable] Application Dry contact Wire 1.25 to 3.5 mm2[ 24 to 14 AWG] Min Pulse Width 10 ms Fig 1.24 Digital Input Digital Output 1 Channel Ch 1...

  • Page 34: Fig 1.25 Dc Relay Application

    Off command  “off” outputs Note Refer to “module mode” for selecting of Latch or Pulse. 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. Warning Use external relay in order to control more than the maximum load, AD/DC 400V 350mA, of digital output.

  • Page 35: Step 7: Wire The Power Supply And Ground Terminal Of A Basic Module

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

  • Page 36: Step 8: Power Up The Meter

    Step 8: Power Up the Meter Close the PT fuses( or direct voltage input fuses). Open the CT shorting blocks. Apply power to the meter. Page 36...

  • Page 37: 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. Display mode View parameter measurements Setup mode Configure parameters[wiring, communication, and etc.] Reset mode Reset energy, demand, maximum, and minimum. System mode View meter system information[meter option, firmware version].
  • Page 38 AVG LED When the “AVG” LED is lit, fourth row LED display shows the average value of A, B, C displays. TOT LED When the “TOT” LED is lit, fourth row LED display shows the sum of A, B, C displays. x1000 LED When the “x1000”...
  • Page 39 Parameter displays in following order In Group B Order Parameter A, B, C Voltage THD √ Current THD √ Parameter displays in following order In Group C Order Parameter Active energy kVARh Reactive energy kVAh Apparent energy Frequency Note Energy[kWh, kVARh, kVAh] is read by the total number which join third and fourth LED display together.

  • Page 40: Setup Mode

    Setup Mode In Setup mode, You can setup 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. Move to the previous menu screen.
  • Page 41 Wiring mode 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 † Speed[bps] 1200bps 2400bps 4800bps 9600bps √ 19200bps 38400bps ‡...

  • Page 42: Reset Mode

    Reset Mode In Reset Mode, you can perform a Energy reset, a Demand reset, or a Maximum/minimum reset. Energy Reset Initialize kWh, kVARh, kVAh Demand Reset Initialize all of Demand, Peak Demand Maximum/minimum Reset Initialize all of Maximum Button Functions in Reset Mode Button Function Enter reset mode by pressing the Down and Enter buttons at the...

  • Page 43: 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 44 Frequency 50Hz, 60Hz Reactive power calculation Method 1 √ Method 2 † Demo mode √ Serial number Version X.XX Hardware version X.XX Firmware version † When operated in demo mode, SETUP LED blinks. Page 44...

  • Page 45: Reactive Calculation Method

    Reactive Calculation Method 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. ∫ ∫ ∫ ∫ ∫...
  • Page 46 regeneration], power factor and active power are negative. Method 2: Calculation regarding 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. ∫ ∫ ∫...

  • Page 47: 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 48: 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 49: Fig 1.22 Dc Module

    Menu Items Order Menu Item Range DC module rectifier current Refer to Fig 2.4 Shunt type 50mV 60mV 100mV Max current 0 ~ 999A DC module battery current Refer to Fig 2.5 Shunt type ±50mV 50mV 60mV 100mV Max current 0 ~ 999A DC module digital input channel 1 Refer to Fig 2.6...

  • Page 50: Fig 2.4 Dc Module Rectifier Current Shunt

    Over discharge Over charge DC module digital output channel 1 Refer to Fig 2.10 Digital output channel type Latch Pulse Pulse width time 0.1 ~ 10.0s Fig 2.4 DC module rectifier current shunt Fig 2.5 DC module battery current shunt Fig 2.6 DC module digital input channel 1 of rectifier fault Fig 2.7 DC module digital input channel 2 of rectifier fault Page 50...
  • Page 51 Fig 2.8 DC module digital input channel 3 of rectifier fault Fig 2.9 DC module digital input channel 4 of rectifier fault Fig 2.10 DC module digital output channel 1 setup Page 51...

  • Page 52: Appendix A Standard Specification

    APPENDIX A Standard Specification Voltage Input  0 ~ 600V 3 ~ L-L, 0 ~ 457V 3 ~ L-N [Use PTs for voltages over 457V line to line in three phase 3 wire open delta direct]  Calibration: 60 ~ 220V per phase ...
  • Page 53 Environmental Condition  Operating temp: -20℃ ~ 70℃[-4℉ ~ 158℉]  Storage temp: -40℃ ~ 85℃[-40℉ ~ 185℉]  Humidity: 5% ~ 95%, non-condensing Weight  Meter + basic module: 0.5kg Page 53...

  • Page 54: Appendix B Standard Compliance

    APPENDIX B Standard Compliance Accuray  IEC62053-22 Class 0.5S Safety  UL61010-2, 2 edition[IEC61010]  IEC61326-1[IEC61000-4-2]: Electrostatic Discharge[ESD]  IEC61326-1[IEC61000-4-3]: EM Field  IEC61326-1[IEC61000-4-4]: Electric Fast Transient  IEC61326-1[IEC61000-4-5]: Surge Immunity  IEC61326-1[IEC61000-4-6]: Conducted RF Immunity  IEC61326-1[IEC61000-4-8]: Rated Power Frequency Magnetic Field ...

  • Page 55: Appendix C Test Report

    APPENDIX C Test Report Measuring Test IEC62053-22, Electricity Meter Equipment: active energy for Class 0.5S Current range Power factor Class 0.2S/ 0.5S Accura 3550 0.05A < I < 0.25A ±0.4%/ ±1.0% ±0.4% 0.25A < I < 10.0A ±0.2%/ ±0.5% ±0.2% 0.10A <...

  • Page 56: Reliability Test

    ‡ Class 0.5S means IEC62053-22 Class 0.5S. Harmonics Accura 3550 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 50% harmonic analysis/ current : 5A 50% harmonic analysis Reliability Test IEC61326, Electrical Equipment for Measurement, Control, and Laboratory- EMC...

  • Page 57: Index

    INDEX Ａ Ｍ AC Relay, 36 Measurement, 15 Accura PDA, 14 Meter Overview, 20 ANSI 4”, 22 Module Mode, 49 Applications, 17 Mounting, 22 Assembly/Mounting, 19 Ｐ Ｂ Parameter, 18 Basic Module[DIO Module] Rear Side, 20 Power Quality, 15 Before You Begin, 20 Power Supply, 32, 33, 37 Power Up the Meter, 38 Ｃ...
  • Page 58 Tel. +82+31-695-7350 Fax. +82+31-695-7399 www.rootech.com ⓒ 2006 Rootech Inc. All Rights Reserved Accura EMeter, Accura 2300/2350, Accura 2500, Accura 3300S/3300, Accura 3500S/3500, Accura 3550S/3550, Accura 5500, Accura 7500 are trademarks of Rootech Inc. Contact rootech for detailed specifications and order information.

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