ROOTECH Accura 2300S/2350-1P3FSC User guide

Digital Power Meter

Accura 2300S front

Accura 2300S rear

Split-Core Single-Phase Three-Feeder

Power Measuring Module

Special-Purpose Modules

Accura 2350-1P3FSC-125A

(Basic Module)

Accura 2350-GAS

Accura 2350-GW

Accura 2350-1P3FSC-125A-DIZCT

(Optional Module)

Accura 2350-TEMP

Accura TSEN

Accura 2350-TEMPS

Accura 2350-1P3FSC-60A

(Basic Module)

Accura 2350-DO

Accura 2350-IDC

Accura 2350-VDC

Accura 2350-1P3FSC-60A-DIZCT

(Optional Module)

Accura 2350-DCM-50V-

80A

Accura 2350-DCM-500V-

80A

Accura 2300S/2350-1P3FSC User Guide

Notice

Page 3

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/2350-1P3FSC User Guide

Page 4

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 power supply voltage indicated on the product is observed: AC 100 – 240 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/2350-1P3FSC User Guide

Warranty

Page 5

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/2350-1P3FSC User Guide

Page 6

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/2350-1P3FSC User Guide

Revision History

Page 7

Revision History

The following versions of Accura 2300S/2350-1P3FSC User Guide have been released.

Revision

Date

Description

Revision 2.00

February 14, 2022

Release of the User Guide for the device with HW revision number higher

than 200.00

Changed voltage sampling information to 512 samples/cycle

Added contents on the demand sync mode

Added contents on the power event log

Modified the input accuracy of the ZCT of Accura 2350-1P3FSC-DIZCT

module

Revision 2.01

September 27, 2022

Changed some of the terms used in the document to achieve consistency

Revision 2.10

September 18, 2023

Changed the harmonic order range needed to calculate voltage THD up

to the 50th order

Changed the description of data aggregation

Changed specifications for power supply and voltage measurements

Added information on the renewed UL certification

Corrected errors in wiring diagrams

Contents 
 
Accura 2300S/2350-1P3FSC User Guide 
 
Page 8 
ⓒ 2015 Rootech Inc. All Rights Reserved 
 
Contents 
Chapter 1
 
Introduction ................................................................................................................................... 15 
Overview ........................................................................................................................................................................................ 15 
Applications ................................................................................................................................................................................. 18 
Product Information ................................................................................................................................................................. 19 
Data Center Distribution Panel Digital Meter/Split-core Single-phase Three-feeder Power 
Measuring Module .......................................................................................................................................................... 19 
Distribution Panel Digital Power Meter/General Power Measuring Module ...................................... 20 
Special-purpose Modules ............................................................................................................................................ 20 
Installation Example ........................................................................................................................................................ 21 
Product Features .............................................................................................................................................................. 23 
Chapter 2
 
Installation ..................................................................................................................................... 26 
Installation Conditions ............................................................................................................................................................ 26 
Before Installation ..................................................................................................................................................................... 27 
Product Appearance ....................................................................................................................................................... 27 
Components ....................................................................................................................................................................... 28 
Dimensions.......................................................................................................................................................................... 29 
Installation Diagram ....................................................................................................................................................... 31 
Step 1: Installing the Product .............................................................................................................................................. 33 
Mounting Accura 2300S on the Panel .................................................................................................................. 33 
Mounting Accura 2350-1P3FSC Power Measuring Module on the Panel ........................................... 34 
Step 2: Accura 2300S Wiring ............................................................................................................................................... 39 
Accura 2300S Voltage Wiring .................................................................................................................................... 39 
Digital Input/Output Wiring of Accura 2300S ................................................................................................... 45 
Step 3: Through-hole Current Wiring of Accura 2350-1P3FSC .......................................................................... 48 
Step 4: Connecting Accura 2350-1P3FSC-DIZCT Module to DIs/ZCT ............................................................. 52 
Step 5: Connecting Accura 2300S with Accura 2350 .............................................................................................. 55 
Step 6: Connecting Accura 2300S Devices for External Communication ...................................................... 57 
Ethernet Communication ............................................................................................................................................. 57 
RS-485 Communication ................................................................................................................................................ 59 
Step 7: Accura 2300S Control Power Supply and Ground Wiring .................................................................... 60 
Control Power Supply Wiring .................................................................................................................................... 60 
Ground Wiring ................................................................................................................................................................... 60 
Chapter 3
 
Accura 2350-1P3FSC Operation/Setup ........................................................................................ 61 
Operation Mode ............................................................................................................................................................... 61 
Button Operation ............................................................................................................................................................. 61 

Accura 2300S/2350-1P3FSC User Guide 
Contents 
 
ⓒ 2015 Rootech Inc. All Rights Reserved 
Page 9 
 
Front View ........................................................................................................................................................................... 62 
Display Mode ..................................................................................................................................................................... 63 
Setup Mode ........................................................................................................................................................................ 64 
Chapter 4
 
Accura 2300S Operation/Setup ................................................................................................. 73 
Device Configuration ............................................................................................................................................................... 73 
Operation Mode ............................................................................................................................................................... 73 
LED Display ......................................................................................................................................................................... 73 
Button Operation ............................................................................................................................................................. 74 
Display Mode .............................................................................................................................................................................. 76 
Front View ........................................................................................................................................................................... 76 
Selecting the ID of Accura 2350 Module ............................................................................................................. 78 
Full Display Screen .......................................................................................................................................................... 80 
Measurement of Voltage/Current/Power.............................................................................................................. 81 
Measurement of Voltage/Frequency ...................................................................................................................... 81 
Measurement of Current .............................................................................................................................................. 82 
Measurement of Power/Power Factor .................................................................................................................... 82 
Measurement of Demand ............................................................................................................................................ 83 
Measurement of Active Energy ................................................................................................................................. 83 
Measurement of Leakage Current ........................................................................................................................... 84 
Ethernet Information ...................................................................................................................................................... 85 
Temperature/ Date & Time ......................................................................................................................................... 86 
Setup Mode ................................................................................................................................................................................. 87 
Full Screen in Setup Mode .......................................................................................................................................... 88 
Measurement Setup ....................................................................................................................................................... 89 
Event Setup ......................................................................................................................................................................... 95 
Accura 2350 Module ID Setup ................................................................................................................................ 106 
Ethernet Communication Setup.............................................................................................................................. 110 
RS-485 Communication Setup ................................................................................................................................ 113 
Reset Configuration ...................................................................................................................................................... 115 
Digital Input/Output Setup ....................................................................................................................................... 117 
Display Setup ................................................................................................................................................................... 122 
Information ....................................................................................................................................................................... 125 
Event Log Mode ...................................................................................................................................................................... 126 
Start Event and End Event ......................................................................................................................................... 126 
Start Event Alarm Generation .................................................................................................................................. 126 
Clearing Event Notifications ..................................................................................................................................... 126 
Button Function .............................................................................................................................................................. 127 
Event Log Number ........................................................................................................................................................ 128 

Contents 
 
Accura 2300S/2350-1P3FSC User Guide 
 
Page 10 
ⓒ 2015 Rootech Inc. All Rights Reserved 
 
Event Timestamp ............................................................................................................................................................ 128 
Dip Event Log .................................................................................................................................................................. 129 
Swell Event Log ............................................................................................................................................................... 129 
Fuse Fail Event Log ....................................................................................................................................................... 130 
Temperature Event Log ............................................................................................................................................... 131 
Current Event Log .......................................................................................................................................................... 131 
Leakage Current Event Log ....................................................................................................................................... 132 
Demand Current Event Log ...................................................................................................................................... 133 
Power Event Log ............................................................................................................................................................. 133 
DI Event Log ..................................................................................................................................................................... 134 
No Event Log ................................................................................................................................................................... 134 
Necessary Steps for Device Setup .................................................................................................................................. 135 
Step 1: Setup for the Voltage Wiring of Accura 2300S and PT Rating ............................................... 135 
Step 2: Automatic Assignment of Accura 2350 Module IDs and Update of IDs............................ 136 
Step 3: Ethernet Setup of Accura 2300S ............................................................................................................ 139 
Chapter 5
 
Measurements ............................................................................................................................. 140 
General Measurement ........................................................................................................................................................... 140 
Measurement Event ............................................................................................................................................................... 142 
Voltage Wiring .......................................................................................................................................................................... 143 
3-Phase 4-Wire Connection ...................................................................................................................................... 143 
3-Phase 3-Wire Connection ...................................................................................................................................... 144 
1-Phase 3-Wire Connection ...................................................................................................................................... 146 
1-Phase 2-Wire Connection ...................................................................................................................................... 147 
Measurement of Voltage Dips(Sags)/Swells ............................................................................................................... 148 
Leakage Current Measurement ........................................................................................................................................ 149 
Residual Voltage Measurement ........................................................................................................................................ 149 
Measurement of Power Per Phase .................................................................................................................................. 150 
Power Factor(PF) Measurement ........................................................................................................................................ 151 
Phase Angle Measurement(Lead/Lag)........................................................................................................................... 151 
Demand Measurement ......................................................................................................................................................... 152 
Voltage Harmonics ................................................................................................................................................................. 154 
Current Harmonics .................................................................................................................................................................. 154 
Unbalance(NEMA MG1) ....................................................................................................................................................... 154 
Negative-Sequence/Zero-Sequence Unbalance ....................................................................................................... 155 
Aggregation ............................................................................................................................................................................... 156 
Appendix A
 
Specifications ........................................................................................................................... 159 
Appendix B
 
Standards Compliance ............................................................................................................ 164 

Accura 2300S/2350-1P3FSC User Guide

Contents

Page 11

IEC 61557-12:2018

Performance Measuring and Monitoring Devices(PMD) ................................. 165

IEC 62053-22:2020 Static Meters for AC Active Energy (Classes 0.1S, 0.2S and 0.5S) ................. 167

IEC 62053-24:2020 Static Meters for Fundamental Reactive Energy(Classes 0.5S, 1S, 1, 2 and 3)

................................................................................................................................................................................................ 167

Appendix C

Accuracy/Reliability ................................................................................................................ 168

Accuracy ............................................................................................................................................................................. 168

Reliability ............................................................................................................................................................................ 169

Appendix D

Line-to-neutral Voltage for Common Main Supply Systems ................................................ 170

Wiring Modes .................................................................................................................................................................. 170

Appendix E

Ordering Information ............................................................................................................. 171

Figures

Accura 2300S/2350-1P3FSC User Guide

Page 12

Figures

Fig 1.1 Accura 2350-1P3FSC Module Compatible with MCCBs/ELBs ............................................................................ 17

Fig 1.2 Installation of Accura 2350-1P3FSC Module .............................................................................................................. 17

Fig 1.3 Installation of Accura 2350-1P3FSC (Using Accura 2350-3P-CT5A Module) ............................................. 21

Fig 1.4 Installation of Accura 2350-1P3FSC (Using Accura 2350-1PSCSH Modules) ............................................ 22

Fig 2.1 Accura 2300S Front ................................................................................................................................................................. 27

Fig 2.2 Accura 2300S Side ................................................................................................................................................................... 27

Fig 2.3 Accura 2300S Rear ................................................................................................................................................................... 27

Fig 2.4 Accura 2350-1P3FSC Power Measuring Modules .................................................................................................... 28

Fig 2.5 Accura 2300S Components ................................................................................................................................................. 28

Fig 2.6 Accura 2350-1P3FSC Components .................................................................................................................................. 28

Fig 2.7 Accura 2300S Front Dimensions ....................................................................................................................................... 29

Fig 2.8 Accura 2300S Side Dimensions ......................................................................................................................................... 29

Fig 2.9 Accura 2300S Rear Dimensions ........................................................................................................................................ 29

Fig 2.10 Accura 2350-1P3FSC Module Dimensions ................................................................................................................ 30

Fig 2.11 Installation Diagram of Accura 2350-1P3FSC (Using Accura 2350-3P-CT5A Module) ...................... 31

Fig 2.12 Accura 2350-1P3FSC Installation Diagram (Using Accura 2350-1PSCSH Module) .............................. 32

Fig 2.13 Mounting Accura 2300S on the Panel ........................................................................................................................ 33

Fig 2.14 New Installation of Accura 2350-1P3FSC (Using Mounting Wings) ............................................................ 34

Fig 2.15 Mounting Accura 2350-1P3FSC on the Panel through Mounting Holes .................................................. 35

(Using Mounting Wings) ...................................................................................................................................................................... 35

Fig 2.16 New Installation of Accura 2350-1P3FSC (Using the Lower Part of the Module) ................................ 36

Fig 2.17 Retrofit Installation of Accura 2350-1P3FSC (Fixing the Module with Cable Ties) .............................. 37

Fig 2.18 Retrofit Installation of Accura 2350-1P3FSC ............................................................................................................ 38

(Fixing the Module Using the Lower Part of the Module) .................................................................................................. 38

Fig 2.19 Voltage Wiring of Accura 2300 S .................................................................................................................................. 39

Fig 2.20 3-Phase 4-Wire, Direct Connection .............................................................................................................................. 41

Fig 2.21 3-Phase 4-Wire Connection with 3 PTs ...................................................................................................................... 41

Fig 2.22 3-Phase 3-Wire, Direct Connection .............................................................................................................................. 42

Fig 2.23 Three-Phase 3-Wire Connection with 2 PTs ............................................................................................................. 42

Fig 2.24 Single-Phase 3-Wire, Direct Connection .................................................................................................................... 43

Fig 2.25 1-Phase 3-Wire Connection with 2 PTs ...................................................................................................................... 43

Fig 2.26 1-Phase 2-Wire, Direct Connection .............................................................................................................................. 44

Fig 2.27 1-Phase 2-Wire Connection with 1 PT ........................................................................................................................ 44

Fig 2.28 Digital Input/Output Channels on Accura 2300S .................................................................................................. 45

Accura 2300S/2350-1P3FSC User Guide 
Figures 
 
ⓒ 2015 Rootech Inc. All Rights Reserved 
Page 13 
 
Fig 2.29 Digital Input .............................................................................................................................................................................. 45 
Fig 2.30 Application of DC Relay ..................................................................................................................................................... 47 
Fig 2.31 Application of AC Relay ...................................................................................................................................................... 47 
Fig 2.32 Location of the Cables Passing Through the Holes of Accura 2350-1P3FSC Module ....................... 49 
Fig 2.33 Measurement Principle of Accura 2350-1P3FSC .................................................................................................... 49 
Fig 2.34 Through-Hole Wiring in 3P4W Mode ......................................................................................................................... 50 
Fig 2.35 Through-Hole Wiring in 3P3W Mode ......................................................................................................................... 51 
Fig 2.36 4 Digital Input Channels on the Optional Module .............................................................................................. 52 
Fig 2.37 3 ZCT Input Channels on the Optional Module .................................................................................................... 53 
Fig 2.38 Connecting the Optional Module to the External ZCT ...................................................................................... 53 
Fig 2.40 Example of Connecting Accura 2300S to Accura 2350 for Dedicated Communication ................... 55 
Fig 2.41 Ethernet Communication Ports on Accura 2300S ................................................................................................. 57 
Fig 2.42 Connecting Accura 2300S Devices via Ethernet Communication ................................................................. 58 
Fig 2.43 RS-485 Communication Port on Accura 2300S ..................................................................................................... 59 
Fig 2.44 Connecting Accura 2300S Devices via RS-485 Communication.................................................................... 59 
Fig 2.45 Accura 2300S Power Supply Wiring ............................................................................................................................. 60 
Fig 4.1 Accura 2300S Front View ..................................................................................................................................................... 73 
Fig 4.2 Screen in Display Mode ........................................................................................................................................................ 74 
Fig 4.3 Screen in Setup Mode ........................................................................................................................................................... 74 
Fig 4.4 Screen in Event Log Mode .................................................................................................................................................. 75 
Fig 4.5 Accura 2300S Front View ..................................................................................................................................................... 76 
Fig 4.6 Temperature Sensor on Accura 2300S .......................................................................................................................... 77 
Fig 4.7 Selecting the ID of Accura 2350 Module ..................................................................................................................... 78 
Fig 4.8 Line-to-neutral Voltage/Current/Power Display Screen ........................................................................................ 81 
Fig 4.9 Line-to-line Voltage/Current/Power Display Screen ............................................................................................... 81 
Fig 4.10 Line-to-line Voltage Display Screen ............................................................................................................................. 82 
Fig 4.11 Current Display Screen ........................................................................................................................................................ 82 
Fig 4.12 Active Power Display Screen ............................................................................................................................................ 83 
Fig 4.13 Active Power Demand Display Screen ........................................................................................................................ 83 
Fig 4.14 Net Energy Display Screen ................................................................................................................................................ 84 
Fig 4.15 Leakage Current Display Screen..................................................................................................................................... 84 
Fig 4.16 Ethernet Connection Status Display Screen ............................................................................................................. 85 
Fig 4.17 Temperature Display Screen ............................................................................................................................................. 86 
Fig 4.18 3-Phase 4-Wire Connection(3P4W): Setup for PT Primary VL12 & Secondary V12 ................................ 89 
Fig 4.19 3-Phase 3-Wire Connection(3P3W): Setup for PT Primary VL12 & Secondary V12 ................................ 90 
Fig 4.20 1-Phase 3-Wire Connection(1P3W): Setup for PT Primary VL12 & Secondary V13 ................................ 90 

Figures

Accura 2300S/2350-1P3FSC User Guide

Page 14

Fig 4.21 1-Phase 2-Wire Connection(1P2W): Setup for PT Primary VL1 & Secondary V1N ................................. 90

Fig 4.22 Dip Event Setup(3-phase 4-wire) ................................................................................................................................... 96

Fig 4.23 Dip Event Setup(3-phase 3-wire) ................................................................................................................................... 96

Fig 4.24 Swell Event Setup(3-Phase 4-Wire)............................................................................................................................... 98

Fig 4.25 Swell Event Setup(3-Phase 3-Wire)............................................................................................................................... 98

Fig 4.26 Dip(Sag) Event Notification Screen.............................................................................................................................126

Fig 4.27 Swell Event Notification Screen ....................................................................................................................................126

Fig 4.28 Example of Event Log Number .....................................................................................................................................128

Fig 5.1 3P4W Connection with 3 PTs and 3 CTs ....................................................................................................................143

Fig 5.2 3P3W Connection with 2 PTs and 3 CTs ....................................................................................................................144

Fig 5.3 1P3W Connection with 2 PTs and 2 CTs ....................................................................................................................146

Fig 5.4 1P2W Connection with 1 PT and 1 CT ........................................................................................................................147

Fig 5.5 Calculation of 1-cycle RMS Voltage Refreshed Each Half Cycle ....................................................................148

Fig 5.6 Voltage Dip(Sag) Detection ...............................................................................................................................................148

Fig 5.7 PF Sign and Phase Angle(Lead/Lag) .............................................................................................................................151

Fig 5.8 Demand Calculation ..............................................................................................................................................................152

Fig 5.9 Predicted Demand Calculation ........................................................................................................................................152

Fig 5.10 Hourly Auto Sync .................................................................................................................................................................153

Fig 5.11 Manual Sync ...........................................................................................................................................................................153

Fig 5.12 Symmetrical Components................................................................................................................................................155

Fig 5.13 평균/최대/최소값 Aggregation 연산 ........................................................................................................................156

Fig 5.14 Aggregation Process for the Last Latched Values ..............................................................................................156

Accura 2300S/2350-1P3FSC User Guide

Chapter 1 Introduction

Page 15

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 digital power meter product line includes Accura 2300S installed on the front of industrial control

panels, including MCC panels and Accura 2350 installed at individual branch loads inside the 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 industrial control panels, which were unavailable with the existing digital power

meters installed at switchgear panels.

Accura 2350-1P3FSC Module Suitable for Measurements at Industrial Control Panels in

Data Centers with Multiple Single-phase Feeders

Industrial control panels within data centers have multiple single-phase feeders with the same current

ratings for power supply to servers. As the basic module, Accura 2350-1P3FSC performs measurements

in three single-phase feeders with the same current ratings at the same time. Compared to installing

Accura 2350-1P/1PSC module on each feeder, it drastically saves installation time and costs.

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 16

Accura 2350-1P3FSC-DIZCT Module Monitoring Leakage Current for Each Single-phase

Feeder and the Trip Status of the MCCB

As an expansion module of Accura 2350-1P3FSC module, Accura 2350-1P3FSC-DIZCT is the optional

single-phase, three-feeder power measuring module that monitors leakage current for each feeder and

the trip status of the MCCB. It not only enables efficient energy management but also ensures the

continuity of the power supply and the safe use of electrical equipment.

Accurate Measurements: ±0.2 /±0.5 % of Reading (Voltage/Current) and Class 0.5S (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% 1 of reading

accuracy. It also meets IEC 62053-22 Class 0.5S standards for active energy measurement. Thus, this allows

for accurate analysis and diagnosis of various problems in energy management at power facilities.

1. The maximum accuracy error of ±1 % may occur according to the position of the holes

cables pass through.

A Variety of Data including Dip(Sag)/Swell Available for Power Quality Analysis

Accura 2300S/2350 provide a variety of data, including dips(sags), swells and harmonics(up to 50th order),

crest factor, K-factor, and unbalance for power quality analysis. It allows energy managers to easily identify

changes in power quality in various industrial control 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.

Accura 2300S/2350-1P3FSC User Guide

Chapter 1 Introduction

Page 17

Proven Safety and Reliability with CE/UL/KC Certifications

The internal and external structures(product and circuit design) of Accura 2300S/2350 meet safety and

reliability requirements for CE (EN 55011:2009/A1:2010, EN IEC 61326-1:2021, EN IEC 61326-2-1:2021,

EN IEC 61000-3-2:2019/A1:2021, EN 61000-3-3:2013/A2:2021), UL (UL 61010-1 3rd edition, UL 61010-2-

030), and KC (EN 55011:2009/A1:2010, EN IEC 61326-1:2021, EN IEC 61326-2-1:2021) standards.

Compatible with MCCBs/ELBs with the Same Current Rating

Accura 2350-1P3FSC power measuring modules are compatible with the MCCB with a current rating of

60 A or 125 A 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 industrial control

panels.

Fig 1.1 Accura 2350-1P3FSC Module Compatible with MCCBs/ELBs

Split-Core Structure Enabling Device Installation on Live Wires

Accura 2350-1P3FSC module feature the split-core structure. It allows for the easy installation of the

product on live wires without the need to cut off power.

Fig 1.2 Installation of Accura 2350-1P3FSC Module

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 18

Applications

Enterprise-wide Energy Management

Accura 2300S/2350 provide energy data on individual branch loads in industrial control panels. Therefore,

it allows for a true enterprise-wide energy management in conjunction with other Accura products (Accura

3300S/3500S/3550S/3700/7500) installed in switchgear panels.

Energy Management of Individual Servers in Data Centers

Accura 2350-1P3FSC module is optimized for use in industrial control panels for server racks with multiple

single-phase feeders with the same current ratings. One Accura 2350-1P3FSC module can perform

measurements in three single-phase feeders. Accura 2350-1P3FSC-DIZCT module monitors leakage

current in each feeder and the trip status of the MCCB, enabling efficient energy management and the

safe use of electrical equipment.

CO2 Emission Management by Reduction of High Energy Cost

Accura 2300S/2350 provide a variety of information needed for effective management of energy

consumption, power facilities, and power quality, as well as analysis of high efficiency equipment. This

allows energy managers to conduct accurate analysis of energy consumption and effectively manage CO2

emissions.

Energy Efficiency Evaluation of High-Efficiency Equipment

Energy managers can identify the efficiency of a range of high-efficiency devices to be installed, including

LED lighting, motors, and power equipment based on the highly accurate energy data provided by Accura

2300S/2350 modules.

Accura 2300S/2350-1P3FSC User Guide

Chapter 1 Introduction

Page 19

Product Information

Digital Meter/Split-core Single-phase Three-feeder Power Measuring Module

The digital power meter product line includes Accura 2300S mounted on the front of an ICP(Industrial

Control Panel) and Accura 2350-1P3FSC modules connected to 3 single-phase loads in the panel. Accura

2300S collects data from multiple Accura 2350-1P3FSC modules connected with 6C telephone lines 1, and

displays the data on its LCD screen.

Device

Model

Description

Weight

Digital power meter

Accura 2300S

Measures the voltage of the incoming

line in the industrial control panel

487 g

Transmits the sampled voltage data to

Accura 2350 modules

Collects data from Accura 2350 modules

and selectively displays the data on the

LCD screen 2

Performs Ethernet or RS-485

communication

Measures the temperature 3 of Accura

2300S with the sensor located at the

rear of the device

Split-core single-phase

Accura 2350-1P3FSC-125A

Basic current 125 A

457 g 4

three-feeder power

measuring module

Accura 2350-1P3FSC-125A-DIZCT

Basic current 125 A, option(digital input/

ZCT connection)

468 g 4

Accura 2350-1P3FSC-60A

Basic current 60 A

393 g 4

Accura 2350-1P3FSC-60A-DIZCT

Basic current 60 A, option(digital input/

ZCT connection)

404 g 4

Mounting wing

-

4 g

1. It is provided with the product. The conducting wire of the 6C telephone line should be at least 0.128 mm2(26

AWG). It is recommended to keep a distance of over 5 mm from power lines generating high levels of noise to

prevent interference.

2. The LCD screen only shows the measurement data of the selected Accura 2350 module. Refer to 「Chapter 4

Accura 2300S Operation/Setup > Display Mode > Accura 2350 Module ID Selection」.

3. Temperature measurement is not for fire detection, but for reference only.

4. It is the weight excluding the mounting wing.

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 20

Digital Power Meter / General Power Measuring Module

Refer to Accura 2300S/2350 User Guide for details on digital power meters except for the Accura 2350-

1P3FSC module which measures three single-phase feeders at the same time.

Special-Purpose Modules

Accura 2350 modules with specialized functions are as follows. For details on the special-purpose

modules, refer to the user guide for each module.

Module

Model

Description

GAS

Accura 2350-GAS

Detects and measures combustible gases

GW (Gateway)

Accura 2350-GW

Collects data on peripheral devices supporting RS-485

communication

TEMP (Temperature)

Accura 2350-TEMP

Measures the external temperature of the panel where the module

is installed

Collects internal temperature data measured by Accura TSEN

devices(Up to 6 devices can be connected.)

Accura 2350-TEMPS

Measures the internal and external temperature of the panel(based

on the installation location)

DO (Digital Output)

Accura 2350-DO

Provides digital outputs which can be controlled from Accura 2300S

and also remotely

IDC (DC Current Input)

Accura 2350-IDC

Measures analog DC current inputs (-20 mA to 20 mA)

VDC (DC Voltage Input)

Accura 2350-VDC

Measures analog DC voltage inputs (-50 V to 50 V)

DCM (DC Voltage/Current)

Accura 2350-DCM

50V-80A

Measures DC voltage/current up to 50 V/80 A

500V-80A 1

Measures DC voltage/current up to 500 V/80 A

1. This model is not UL certified.

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ROOTECH Accura 2300S/2350-1P3FSC User guide

ROOTECH Accura 2300S/2350-1P3FSC User guide

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