ROOTECH ACCURA 2300S User manual

Distribution Panel Digital Power Meter
Accura 2300S front
Accura 2300S rear
Three-phase Power Measuring Module / Terminal Block
Single-phase Power Measuring Module / Terminal Block
Accura 2350-3P-250A-105
TM-3P-105
Accura 2350-1P-250A-105
TM-1P-105
Accura 2350-3P-125A-90
TM-3P-90
Accura 2350-1P-125A-60
TM-1P-60
Accura 2350-3P-100A-75
TM-3P-75L
Accura 2350-1P-100A-50
TM-1P-50L
Accura 2350-3P-60A-75
TM-3P-75
Accura 2350-1P-60A-50
TM-1P-50
Accura 2350-3P-CT5A-75
Accura 2350-1P-50A-35
Accura 2350-1P-30A-35
Accura 2350-1PSH-50A-35
Accura 2350-1PSH-30A-35

Three-phase Split-core
Power Measuring Module
Single-phase Split-core
Power Measuring Module
Single-phase Split-core Single-hole
Power Measuring Module
Accura 2350-3PSC-250A-105
Accura 2350-1PSC-250A-105
Accura 2350-1PSCSH-800A
Accura 2350-3PSC-125A-90
Accura 2350-1PSC-125A-60
Accura 2350-1PSCSH-630A
Accura 2350-3PSC-60A-75
Accura 2350-1PSC-60A-50
Accura 2350-1PSCSH-400A
Accura 2350-3PSC-CT5A-90

Special-purpose Module
Accura 2350-GAS
Accura 2350-GW
Accura 2350-TEMP
Accura TSEN
Accura 2350-TEMPS
Accura 2350-DO
Accura 2350-IDC
Accura 2350-VDC
Accura 2350-DCM-50V-80A
Accura 2350-DCM-500V-80A

Accura 2300S/2350 User Guide
Notice
ⓒ2011 Rootech Inc. All Rights Reserved
Page 5
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.
Indicates alternative voltage or current.
Indicates direct voltage or current.
Installation Considerations
The installation, operation, and maintenance of the product should be performed only by qualified,
competent personnel that have received appropriate training for high voltage and current devices.
Caution
If hazardous voltages are mishandled while installing and operating the product in the field, it can
cause serious injury or death.
◼This device must be installed and serviced only by qualified personnel who have in-depth knowledge
of installing, commissioning and operating the device and have had appropriate training. He or she
should have read and understood the various safety measures and warnings stated in the
instructions.
◼Before carrying out any work on the device, switch off the power supply to the device.
◼Always use an appropriate voltage detection device to confirm the absence of voltage.
◼Always power the device with the correct rated voltage.
◼Install the device in a suitable electrical cabinet by following recommended installation instructions.
Failure to take these precautions could cause serious injuries or death.

Notice
Accura 2300S/2350 User Guide
Page 6
ⓒ2011 Rootech Inc. All Rights Reserved
Caution
Observe the following instructions, or it may cause permanent damage to the product.
To ensure that the device operates correctly, make sure that:
◼The device is correctly installed.
◼The auxiliary power supply voltage indicated on the product is observed: AC 85 –265 V, DC 100 –
300 V.
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.
In the absence of written agreements, Rootech, Inc. assumes no liability for applications assistance,
customer’s system design, or infringement of patents or copyrights induced by third parties arising
from the use of the products described herein.
We endeavor to provide accurate information in the document. However, we are not responsible for any
errors which may appear here and reserves the right to make changes without prior notice.
Limitation of Liability
Where applicable law allows and does not prohibit or restrict such limitation, Rootech, Inc’s liability for
this product shall be limited to the amount actually paid by customers for the product.

Accura 2300S/2350 User Guide
Warranty
ⓒ2011 Rootech Inc. All Rights Reserved
Page 7
Warranty
Rootech Inc. provides warrants for two years from the product receipt date only to the original
purchaser of the products and software that are sold or licensed by the company.
To obtain warranty service, the purchased products should be free from serious defects in material and
workmanship.
The software is provided in an up-to-date version, thus we do not offer any warranty for the software
product.
In order to make a product claim under the warranties described above, the original purchaser should
immediately contact Rootech headquarters. Upon receiving claims, Rootech will check out the product
either at where the purchaser is or at the company after receiving the product from the customer, who
is responsible for the cost of shipping the product. After inspecting the product, we will provide repair
or replacement services for the product.
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.
Limitation of Warranty
The Warranty does not apply to uninterrupted or error-free operation of the product or cover normal
wear and tear of the product or costs caused by the removal, installation, or troubleshooting of the
customer's electrical systems.
Defects caused by any of the following factors are not covered under the warranty.
◼Improper use (alteration, accident, misuse, abuse) or failure to act in accordance with installation,
operation or maintenance instructions
◼Unauthorized modifications, changes or repair attempts
◼Failure to comply with applicable safety standards & regulations
◼Damages coming from when transporting or storing the product
◼Damages caused by the force majeure event, including fire, flood, earthquakes, storm damage,
overvoltage & lightning
◼If the original identification marks (trade-mark, serial number, etc.) have been defaced, altered, or
removed.

Warranty
Accura 2300S/2350 User Guide
Page 8
ⓒ2011 Rootech Inc. All Rights Reserved
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.
Any technical assistance with system design provided by Rootech's personnel or representatives shall be
deemed to be a suggestion. The original purchaser is responsible for determining the feasibility of such
suggestions and should conduct tests to prove their feasibility.
It is the original purchaser’s responsibility to determine the suitability of the product and associated
documentation. The original purchaser should acknowledge that 100% up time is not realizable because
of possible hardware or software defects. The original purchaser should recognize that such defects and
failures may cause inaccuracies or malfunctions.
No agency, corporate entity, or employee of Rootech or other companies has authority to amend,
modify or extend the terms and conditions of this warranty in any way without express written
authorization from Rootech, Inc.
Standards Compliance
Energy-usage Monitor
E522977
MSIP-REM-RTE-ACCURA2300S

Accura 2300S/2350 User Guide
Revision History
ⓒ2011 Rootech Inc. All Rights Reserved
Page 9
Revision History
The following versions of 「Accura 2300S/2350 User Guide」have been released.
Revision
Date
Description
Revision 2.00
February 16, 2022
Release of the User Guide for the device with the HW revision number
higher than 200.00
Changed voltage sampling information to 512 samples/cycle
Added contents on the 1P2F measurement of the 3P power measuring
module
Added contents on the demand sync mode
Added contents on connection between external ZCTs and Accura 2350
modules
Added contents on the power event log
Revision 2.01
September 27, 2022
Changed some of the terms used in the document to achieve
consistency

Contents
Accura 2300S/2350 User Guide
Page 10
ⓒ2011 Rootech Inc. All Rights Reserved
Contents
Chapter 1 Introduction..................................................................................................................................................... 18
Overview..................................................................................................................................................................................................................18
Applications ........................................................................................................................................................................................................... 22
Product Information .......................................................................................................................................................................................... 23
Distribution Panel Digital Meter/Power Measuring Module .............................................................................................. 23
Special-purpose Modules.....................................................................................................................................................................25
Installation Example ................................................................................................................................................................................ 26
Product Features.......................................................................................................................................................................................29
Chapter 2 Installation ....................................................................................................................................................... 34
Installation Conditions...................................................................................................................................................................................... 34
Before Installation............................................................................................................................................................................................... 35
Product Appearance ............................................................................................................................................................................... 35
Components................................................................................................................................................................................................37
Dimensions ..................................................................................................................................................................................................40
Installation Diagram................................................................................................................................................................................ 47
Step 1: Installing the Product .......................................................................................................................................................................49
Mounting Accura 2300S on the Panel ..........................................................................................................................................49
Mounting Accura 2350-3P Power Measuring Modules on the Panel...........................................................................50
Mounting Accura 2350-1P Power Measuring Module on the Panel............................................................................. 57
Mounting Accura 2350-3PSC Power Measuring Module on the Panel .......................................................................64
Mounting Accura 2350-1PSC Power Measuring Module on the Panel .......................................................................69
Mounting Accura 2350-1PSCSH Power Measuring Module on the Panel .................................................................74
Step 2: Wiring Accura 2300S ........................................................................................................................................................................78
Voltage Wiring of Accura 2300S ...................................................................................................................................................... 78
Digital Input/Output Wiring of Accura 2300S........................................................................................................................... 84
Step 3: Through-hole Current Wiring of Accura 2350.....................................................................................................................87
Through-hole Wiring of Accura 2350-3P/3PSC Modules.................................................................................................... 87
Through-hole Wiring of Accura 2350-1P/1PSH/1PSC Modules....................................................................................... 91
Through-hole Wiring of Accura 2350-1PSCSH Modules ..................................................................................................... 93
Step 4: Connecting Accura 2350 with External ZCTs........................................................................................................................96
Step 5: Connecting Accura 2300S with Accura 2350 ....................................................................................................................... 98
Step 6: Connecting Accura 2300S Devices for External Communication.............................................................................100
Ethernet Communication....................................................................................................................................................................100
RS-485 Communication ......................................................................................................................................................................102
Step 7: Accura 2300S Control Power Supply and Ground Wiring...........................................................................................104
Control Power Supply Wiring...........................................................................................................................................................104
Ground Wiring .........................................................................................................................................................................................104

Accura 2300S/2350 User Guide
Contents
ⓒ2011 Rootech Inc. All Rights Reserved
Page 11
Chapter 3 Accura 2350 Operation/Setup.................................................................................................................... 105
Operation Mode .....................................................................................................................................................................................105
Button Operation....................................................................................................................................................................................105
Accura 2350-3P/3PSC .....................................................................................................................................................................................106
Applied Model .........................................................................................................................................................................................106
Front View..................................................................................................................................................................................................106
Display Mode ...........................................................................................................................................................................................107
Setup Mode...............................................................................................................................................................................................109
Accura 2350-1P/1PSC .....................................................................................................................................................................................123
Applied Model .........................................................................................................................................................................................123
Front View..................................................................................................................................................................................................123
Display Mode ...........................................................................................................................................................................................124
Setup Mode...............................................................................................................................................................................................124
Accura 2350-1PSCSH ......................................................................................................................................................................................133
Applied Model .........................................................................................................................................................................................133
Front View..................................................................................................................................................................................................133
Display Mode ...........................................................................................................................................................................................134
Setup Mode...............................................................................................................................................................................................134
Chapter 4 Accura 2300S Operation/Setup ................................................................................................................. 145
Device Configuration ......................................................................................................................................................................................145
Operation Mode .....................................................................................................................................................................................145
LED Display................................................................................................................................................................................................145
Button Operation....................................................................................................................................................................................146
Display Mode......................................................................................................................................................................................................148
Front View..................................................................................................................................................................................................148
Selecting the ID of Accura 2350 Module...................................................................................................................................150
Full Display Screen.................................................................................................................................................................................152
Measurement of......................................................................................................................................................................................153
Voltage/Current/Power/Energy........................................................................................................................................................153
Measurement of Voltage/Frequency ............................................................................................................................................153
Measurement of Current ....................................................................................................................................................................154
Measurement of Power/Power Factor..........................................................................................................................................154
Measurement of Demand ..................................................................................................................................................................155
Measurement of Active Energy .......................................................................................................................................................155
Measurement of Leakage Current .................................................................................................................................................156
Ethernet Information ............................................................................................................................................................................156
Temperature/Date & Time.................................................................................................................................................................158
Setup Mode.........................................................................................................................................................................................................159
Full Screen in Setup Mode................................................................................................................................................................160
Measurement Setup..............................................................................................................................................................................161
Event Setup ...............................................................................................................................................................................................167

Contents
Accura 2300S/2350 User Guide
Page 12
ⓒ2011 Rootech Inc. All Rights Reserved
Accura 2350 Module ID Setup ........................................................................................................................................................177
Accura 2350-1P Device Group Setup...........................................................................................................................................181
Ethernet Communication Setup......................................................................................................................................................185
RS-485 Communication Setup ........................................................................................................................................................188
Reset Configuration...............................................................................................................................................................................190
Digital Input/Output Setup ...............................................................................................................................................................192
Display Setup............................................................................................................................................................................................197
Information................................................................................................................................................................................................200
Event Log Mode ................................................................................................................................................................................................201
Start Event and End Event .................................................................................................................................................................201
Providing Notifications for Start Events......................................................................................................................................201
Clearing Event Notifications..............................................................................................................................................................201
Button Function.......................................................................................................................................................................................202
Event Log Number.................................................................................................................................................................................203
Event Timestamp ....................................................................................................................................................................................203
Dip Event Log...........................................................................................................................................................................................204
Swell Event Log .......................................................................................................................................................................................204
Fuse Fail Event Log................................................................................................................................................................................205
Temperature Event Log .......................................................................................................................................................................206
Current Event Log ..................................................................................................................................................................................206
Leakage Current Event Log ...............................................................................................................................................................207
Demand Current Event Log...............................................................................................................................................................208
No Event Log............................................................................................................................................................................................209
Necessary Steps for Device Setup ...........................................................................................................................................................210
Step 1: Setup for the Voltage Wiring of Accura 2300S and PT Rating ......................................................................210
Step 2: Automatic Assignment of Accura 2350 Module IDs and Update of IDs ..................................................211
Step 3: Ethernet Setup of Accura 2300S ....................................................................................................................................214
Chapter 5 Measurements............................................................................................................................................... 215
General Measurement ....................................................................................................................................................................................215
Measurement Event .........................................................................................................................................................................................217
Voltage Wiring....................................................................................................................................................................................................218
3-Phase 4-Wire Connection..............................................................................................................................................................218
3-Phase 3-Wire Connection..............................................................................................................................................................219
1-Phase 3-Wire Connection..............................................................................................................................................................221
1-Phase 2-Wire Connection..............................................................................................................................................................222
Measurement of Voltage Dips(Sags)/Swells........................................................................................................................................223
Leakage Current Measurement..................................................................................................................................................................224
Residual Voltage Measurement .................................................................................................................................................................224
Residual Current Measurement .................................................................................................................................................................224
Measurement of Power Per Phase ...........................................................................................................................................................225
Three-phase Power Measurement ...........................................................................................................................................................226

Accura 2300S/2350 User Guide
Contents
ⓒ2011 Rootech Inc. All Rights Reserved
Page 13
Power Factor(PF) Measurement.................................................................................................................................................................227
Phase Angle Measurement(Lead/Lag)....................................................................................................................................................228
Demand Measurement...................................................................................................................................................................................229
Voltage Harmonics...........................................................................................................................................................................................231
Current Harmonics ...........................................................................................................................................................................................231
Unbalance(NEMA MG1).................................................................................................................................................................................232
Negative-Sequence/Zero-Sequence Unbalance................................................................................................................................233
Aggregation.........................................................................................................................................................................................................234
Appendix A Specifications ............................................................................................................................................. 237
Appendix B Standards Compliance.............................................................................................................................. 247
IEC 62053-22:2020 Static Meters for AC Active Energy (Classes 0.1S, 0.2S and 0.5S) .......................................250
IEC 62053-24:2020 Static Meters for Fundamental Reactive Energy (Classes 0.5S, 1S, 1, 2 and 3) ............250
Appendix C Accuracy/Reliability................................................................................................................................... 251
Accuracy......................................................................................................................................................................................................251
Reliability.....................................................................................................................................................................................................252
Appendix D Line-to-neutral Voltage for Common Main Supply Systems.................................................................... 253
Wiring Modes...........................................................................................................................................................................................253
Appendix E Ordering Information................................................................................................................................ 254

Figures
Accura 2300S/2350 User Guide
Page 14
ⓒ2011 Rootech Inc. All Rights Reserved
Figures
Fig 1.1 Through-hole Type Current Sensing Structure of Accura 2350-3P/1P Module.......................................20
Fig 1.2 Accura 2350 Module Compatible with MCCBs/ELBs with Various Ratings ................................................ 20
Fig 1.3 Installation of Accura 2350-3PSC/1PSC Module ...................................................................................................... 21
Fig 1.4 Installation Example of Accura 2300S/2350 Modules ...........................................................................................26
Fig 1.5 Installation Example of Split-core Power Measuring Module............................................................................ 27
Fig 2.1 Accura 2300S Front .................................................................................................................................................................35
Fig 2.2 Accura 2300S Side ................................................................................................................................................................... 35
Fig 2.3 Accura 2300S Rear................................................................................................................................................................... 35
Fig 2.4 Accura 2350-3P/1P Power Measuring Modules ....................................................................................................... 36
Fig 2.5 Accura 2350-3PSC/1PSC/1PSCSH Split-core Power Measuring Modules ................................................... 36
Fig 2.6 Accura 2300S Components.................................................................................................................................................37
Fig 2.7 Accura 2350-3P Components ............................................................................................................................................ 37
Fig 2.8 Accura 2350-1P Components ............................................................................................................................................ 37
Fig 2.9 Accura 2350-1PSH Components ......................................................................................................................................38
Fig 2.10 Accura 2350-3PSC Components .................................................................................................................................... 38
Fig 2.11 Accura 2350-1PSC Components .................................................................................................................................... 38
Fig 2.12 Accura 2350-1PSCSH Components .............................................................................................................................. 39
Fig 2.13 TM-3P Components ............................................................................................................................................................. 39
Fig 2.14 TM-1P Components ............................................................................................................................................................. 39
Fig 2.15 Accura 2300S Front Dimensions .................................................................................................................................... 40
Fig 2.16 Accura 2300S Side Dimensions ......................................................................................................................................40
Fig 2.17 Accura 2300S Rear Dimensions......................................................................................................................................40
Fig 2.18 Accura 2350-3P Module Dimensions ..........................................................................................................................41
Fig 2.19 TM-3P Terminal Block Dimensions ...............................................................................................................................41
Fig 2.20 Accura 2350-1P Module Dimensions ..........................................................................................................................42
Fig 2.22 Accura 2350-1PSH Module Dimensions ....................................................................................................................42
Fig 2.21 TM-1P Single-phase Terminal Block Dimensions ..................................................................................................43
Fig 2.23 Accura 2350-3PSC Module Dimensions..................................................................................................................... 44
Fig 2.24 Accura 2350-1PSC Module Dimensions..................................................................................................................... 45
Fig 2.25 Accura 2350-1PSCSH Module Dimensions............................................................................................................... 45
Fig 2.25 Installation Diagram of Accura 2300S/2350-3P/1P Power Measuring Modules ...................................47
Fig 2.26 Installation Diagram of Accura 2300S/2350 Split-core Power Measuring Modules............................48
Fig 2.28 Mounting Accura 2300S on the Panel........................................................................................................................ 49
Fig 2.28 Mounting Accura 2350-3P Module on the Panel ................................................................................................. 50

Accura 2300S/2350 User Guide
Figures
ⓒ2011 Rootech Inc. All Rights Reserved
Page 15
Fig 2.29 Mounting Accura 2350-3P Module on the Panel through Mounting Holes .......................................... 51
Fig 2.30 Mounting the Mounting Plate / Terminal Block for Accura 2350-3P on the Panel............................55
Fig 2.31 Mounting Accura 2350-1P Module on the Panel(Load Located on the Right Side) .......................... 57
Fig 2.32 Mounting Accura 2350-1P Module on the Panel through Mounting Holes .......................................... 58
Fig 2.33 Mounting the Mounting Plate / Terminal Block for Accura 2350-1P on the Panel............................62
Fig 2.34 Mounting Accura 2350-3PSC Module on the Panel(New Installation) ......................................................64
Fig 2.35 Mounting Accura 2350-3PSC Module on the Panel through Mounting Holes..................................... 65
Fig 2.36 Mounting the Mounting Plate for Accura 2350-3PSC Module on the Panel......................................... 67
Fig 2.37 Mounting Accura 2350-3PSC Module on the Panel (Retrofit Installation)...............................................68
Fig 2.38 Mounting Accura 2350-1PSC Module on the Panel(New Installation) ......................................................69
Fig 2.39 Mounting Accura 2350-1PSC Module on the Panel through Mounting Holes..................................... 70
Fig 2.40 Mounting the Mounting Plate for Accura 2350-1PSC Module on the Panel......................................... 72
Fig 2.41 Mounting Accura 2350-1PSC Module on the Panel (Retrofit Installation)...............................................73
Fig 2.42 Mounting Accura 2350-1PSCSH Module on the Panel (New Installation) .............................................. 74
Fig 2.43 Mounting Accura 2350-1PSCSH Module on the Panel through Mounting Holes............................... 75
Fig 2.44 Mounting the Mounting Plate for Accura 2350-1PSCSH Module on the Panel...................................76
Fig 2.45 Mounting Accura 2350-1PSCSH Module on the Panel (Retrofit Installation) ........................................ 77
Fig 2.46 Voltage Wiring of Accura 2300S....................................................................................................................................78
Fig 2.47 3-phase 4-wire, Direct Connection ............................................................................................................................... 80
Fig 2.48 3-phase 4-wire Connection with 3 PTs....................................................................................................................... 80
Fig 2.49 3-phase 3-wire, Direct Connection ............................................................................................................................... 81
Fig 2.50 Three-phase 3-wire Connection with 2 PTs .............................................................................................................81
Fig 2.51 Single-phase 3-wire, Direct Connection.....................................................................................................................82
Fig 2.52 Single-phase 3-wire Connection with 2 PTs ............................................................................................................ 82
Fig 2.53 Single-phase 2-wire, Direct Connection.....................................................................................................................83
Fig 2.54 Single-phase 2-wire Connection with 1 PT.............................................................................................................. 83
Fig 2.55 Digital Input/Output Channels on Accura 2300S.................................................................................................. 84
Fig 2.56 Digital Input.............................................................................................................................................................................. 85
Fig 2.57 Application of DC Relay .....................................................................................................................................................86
Fig 2.58 Application of AC Relay......................................................................................................................................................86
Fig 2.59 3P4W/3P3W Through-hole Wiring ............................................................................................................................... 88
Fig 2.60 3P4W/3P3W Through-hole Wiring with 3 CTs ....................................................................................................... 88
Fig 2.61 3P3W Through-hole Wiring with 2 CTs......................................................................................................................89
Fig 2.62 Single-phase Line-to-neutral Through-hole Wiring.............................................................................................92
Fig 2.63 Single-phase Line-to-line Through-hole Wiring .................................................................................................... 92
Fig 2.64 Grouping Three Accura 2350-1PSCSH Modules in 3P4W/3P3W Mode....................................................94

Figures
Accura 2300S/2350 User Guide
Page 16
ⓒ2011 Rootech Inc. All Rights Reserved
Fig 2.65 Grouping Two Accura 2350-1PSCSH Modules in 3P3W Mode ..................................................................... 94
Fig 2.66 Single-phase Line-to-neutral Through-hole Wiring of Single-hole Module........................................... 95
Fig 2.67 Single-phase Line-to-line Through-hole Wiring of Single-hole Module .................................................. 95
Fig 2.70 Connecting the Cable for Connection with the ZCT with the External ZCT ...........................................96
Fig 2.71 Connecting Accura 2350 Module to the External ZCT....................................................................................... 97
Fig 2.68 Example of Connecting Accura 2300S to Accura 2350 for Dedicated Communication ................... 98
Fig 2.69 Ethernet Communication Ports on Accura 2300S...............................................................................................100
Fig 2.70 Connecting Accura 2300S Devices via Ethernet Communication...............................................................101
Fig 2.71 RS-485 Communication Port on Accura 2300S ...................................................................................................102
Fig 2.72 Connecting Accura 2300S Devices via RS-485 Communication..................................................................103
Fig 2.73 Accura 2300S Power Supply Wiring...........................................................................................................................104
Fig 4.1 Accura 2300S Front View ...................................................................................................................................................145
Fig 4.2 Screen in Display Mode ......................................................................................................................................................146
Fig 4.3 Screen in Setup Mode .........................................................................................................................................................146
Fig 4.4 Screen in Event Log Mode ................................................................................................................................................147
Fig 4.5 Accura 2300S Front View ...................................................................................................................................................148
Fig 4.6 Temperature Sensor on Accura 2300S ........................................................................................................................150
Fig 4.7 Selecting the ID of Accura 2350 Module...................................................................................................................150
Fig 4.8 Voltage/Current/Power/Energy Display Screen .......................................................................................................153
Fig 4.9 Voltage/Current/Power/Energy Display Screen for Each Phase......................................................................153
Fig 4.10 Line-to-line Voltage Display Screen ...........................................................................................................................154
Fig 4.11 Phase Current Display Screen........................................................................................................................................154
Fig 4.12 Active Power Display Screen..........................................................................................................................................155
Fig 4.13 Active Power Demand Display Screen ......................................................................................................................155
Fig 4.14 Net Energy Display Screen..............................................................................................................................................156
Fig 4.15 Leakage Current Display Screen...................................................................................................................................156
Fig 4.16 Ethernet Connection Status Display Screen ...........................................................................................................157
Fig 4.17 Temperature Display Screen...........................................................................................................................................158
Fig 4.18 3-phase 4-wire Connection(3P4W): Setup for PT Primary VL12 & Secondary V12 Values................161
Fig 4.19 3-phase 3-wire Connection(3P3W): Setup for PT Primary VL12 & Secondary V12...............................162
Fig 4.20 1-phase 3-wire Connection(1P3W): Setup for PT Primary VL12 & Secondary V13...............................162
Fig 4.21 1-phase 2-wire Connection(1P2W): Setup for PT Primary VL1 & Secondary V1N.............................162
Fig 4.22 Dip Event Setup(3-phase 4-wire).................................................................................................................................168
Fig 4.23 Dip Event Setup(3-phase 3-wire).................................................................................................................................168
Fig 4.24 Swell Event Setup(3-phase 4-wire) .............................................................................................................................170
Fig 4.25 Swell Event Setup(3-phase 3-wire) .............................................................................................................................170

Accura 2300S/2350 User Guide
Figures
ⓒ2011 Rootech Inc. All Rights Reserved
Page 17
Fig 4.26 Dip(Sag) Event Notification Screen.............................................................................................................................201
Fig 4.27 Swell Event Notification Screen....................................................................................................................................201
Fig 4.28 Example of Event Log Number.....................................................................................................................................203
Fig 5.1 3P4W Connection with 3 PTs and 3 CTs ....................................................................................................................218
Fig 5.2 3P3W Connection with 2 PTs and 3 CTs ....................................................................................................................219
Fig 5.3 1P3W Connection with 2 PTs and 2 CTs ....................................................................................................................221
Fig 5.4 1P2W Connection with 1 PT and 1 CT........................................................................................................................222
Fig 5.5 Calculation of 1-cycle RMS Voltage Refreshed Each Half Cycle ....................................................................223
Fig 5.6 Voltage Dip(Sag) Detection...............................................................................................................................................223
Fig 5.7 Vector Sum for the Total Apparent Power ................................................................................................................226
Fig 5.8 Arithmetic Sum for the Total Apparent Power........................................................................................................227
Fig 5.9 PF Sign and Phase Angle(Lead/Lag).............................................................................................................................228
Fig 5.10 Demand Calculation ...........................................................................................................................................................229
Fig 5.11 Predicted Demand Calculation .....................................................................................................................................229
Fig 5.12 Hourly Auto Sync.................................................................................................................................................................230
Fig 5.13 Manual Sync ...........................................................................................................................................................................230
Fig 5.14 Symmetrical Components................................................................................................................................................233
Fig 5.15 Aggregation Process ..........................................................................................................................................................234

Chapter 1 Introduction
Accura 2300S/2350 User Guide
Page 18
ⓒ2011 Rootech Inc. All Rights Reserved
Chapter 1 Introduction
Overview
Paradigm Shift in Energy Management
When energy costs were low, energy management mainly focused on controlling the total energy
supply to all loads using switchgear panels, including incoming feeders and ABS panels for stable
power supply. However, carbon pricing policies have been implemented since 2015, and energy costs
have sharply increased. This has resulted in a rapidly growing need to manage energy usage on
individual branch loads in distribution panels at various industrial facilities, manufacturing plants, IDC
centers, etc.
Limit in Applying Digital Power Meters Used in Switchgear Panels to Distribution Panels
Installing digital power meters used in existing switchgear panels at distribution panels entails
limitations, such as narrow installation space, electrical hazards arising from the voltage and current
wiring process, and high installation costs. It makes it difficult for energy managers to access energy
data on individual branch loads and devise practical energy efficiency measures for each branch load.
Power Meters Specialized for Managing Major Branch Loads
The distribution panel digital power meter product line includes Accura 2300S installed on the front of
distribution panels(including MCC panels) and Accura 2350 installed at individual branch loads inside
distribution panels. Accura 2300S collects power data from multiple Accura 2350 modules via internal
communication and displays measurement data on each branch load. This enables energy managers to
check power data on individual branch loads in distribution panels, which were unavailable with the
existing digital power meters installed at switchgear panels.
Accurate Measurements: ±0.2 %/±0.5 %1 of Reading(Voltage/Current) and Class 0.5S/Class 0.2S 2
(Active Energy)
Due to greenhouse gas emission regulations, it has recently become essential to establish enterprise-
wide energy management systems for efficient energy usage at sites such as plants, manufacturing
factories, and buildings. A key factor determining the reliability of energy management systems is the
measurement accuracy of meters. Accura 2300S/2350 perform accurate voltage/current measurements
with ±0.2/±0.5 %1of reading accuracy. It also meets IEC 62053-22 Class 0.5S/Class 0.2S2standards for
active energy measurement. Thus, this allows for accurate analysis and diagnosis of various problems in
energy management at power facilities.
1. Accura 2350-3PSC/1PSC modules have ±0.5 % of reading accuracy for current measurement, and the maximum
accuracy error of ±1 % may occur according to the position of the holes
cables pass through.
2. Accura 2350-1PSCSH modules meet IEC 62053-22 Class 0.2S standards for active energy measurement.

Accura 2300S/2350 User Guide
Chapter 1 Introduction
ⓒ2011 Rootech Inc. All Rights Reserved
Page 19
A Variety of Data including Dip(Sag)/Swell Available for Power Quality Analysis
Accura 2300S/2350 provide a variety data, including dips(sags), swells and harmonics(up to 40th order),
crest factor, K-factor, and unbalance for power quality analysis. It allows energy managers to easily
identify changes in power quality in various distribution panels at power facilities, enabling effective
power quality management.
Maximum/Minimum/Average Values Available within an Aggregation Interval
Accura 2300S/2350 calculate the average of the data collected every 0.5 seconds based on the data
measured over one cycle for various parameters, including voltage, current, and power. Based on this
data, it also provides the maximum/minimum/average values for various aggregation intervals, including
1 second, 5 seconds, 1 minute, 5 minutes, 1 hour and 6 hours. A measurement interval longer than 0.5
seconds refers to an aggregation interval.
Via communication, Accura 2300S/2350 provide not only the average value for the 0.5-second interval
but also the maximum/minimum/average values for each aggregation interval and timestamped data
for the max/min values. Since it includes measurement data that change instantaneously during
aggregation intervals, it allows for accurate trend analysis of voltage, current and power quality.
Proven Safety and Reliability with CE/UL Certifications
The internal and external structures(product and circuit design) of Accura 2300S/2350 meet safety and
reliability requirements for CE(EN 61326-1, EN 61326-2-1, EN 61010-1) and UL(UL 61010-1 3rd edition,
IEC 61010-2-030) standards.
Through-hole Type Structure for Easier and Safer Installation
Accura 2350-3P/1P power measuring modules feature the through-hole type current sensing structure
that does not require electrical contact with cables or busbars. Therefore, it ensures safety from
electrical accidents, as well as easy installations. The TM-3P terminal block also allows for easier
electrical wiring.

Chapter 1 Introduction
Accura 2300S/2350 User Guide
Page 20
ⓒ2011 Rootech Inc. All Rights Reserved
Fig 1.1 Through-hole Type Current Sensing Structure of Accura 2350-3P/1P Module
Compatible with MCCBs/ELBs with Various Ratings
Accura 2350-3P/1P power measuring modules are compatible with MCCBs/ ELBs with a range of current
ratings since they have identical installation dimensions and wiring hole positions. Thus, when installing
the products, it is possible to integrate them into the existing MCCBs/ELBs in distribution panels.
Fig 1.2 Accura 2350 Module Compatible with MCCBs/ELBs with Various Ratings
Split-core Structure Enabling Device Installation on Live Wires (Applicable for Split-core Modules)
Accura 2350-3PSC/1PSC/1PSCSH modules feature the split-core structure. It allows for the easy
installation of the products on live wires without the need to cut off power.