ROOTECH Accura 2300S/2350-1P3FSC User guide

Distribution Panel Digital Power Meter

Accura 2300S front view

Accura 2300S rear view

Single-phase Three-Feeder

Power Measuring Module

Special-Purpose Module

Accura 2350-1P3FSC-125A

(Basic Module)

Accura 2350-GAS

Accura 2350-GW

Accura 2350-1P3FSC-125A-DIZCT

(Option 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

(Option Module)

Accura 2350-DCM-50V-80A

Accura 2350-DCM-500V-80A

Accura 2300S/2350 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 the user of the presence of hazards which can result in injury, damage to property

or to the device if proper precautions are not followed.

Note

Indicates installation, operation and maintenance instructions for the product.

Indicates alternative voltage or current.

Indicates direct voltage or current.

Installation Considerations

The installation and operation of Accura 2500/2550 should be performed only by qualified, competent

personnel that have received appropriate training and experience with high voltage and current modules.

Caution

Failure to observe the following instructions may result in severe injury or death.

◼ During normal operation of Accura 2500/2550, hazardous voltages are present on its terminal strips that

connect the PT(Potential Transformer), CT(Current Transformer), voltage input, power, and external I/O

circuits. The secondary of the PT/CT may generate fatal voltages/currents resulting from the primary of

the PT/CT.

◼ Standard safety precautions should be followed while installing or maintaining the product, including

removing PT fuses and shorting CT secondaries.

◼ Install the product in a switchgear cabinet to prevent users from accessing terminal strips after

completing wiring of the product.

Notice

Accura 2300S/2350 User Guide

Page 4

Caution

Observe the following instructions, or permanent damage may occur to the product.

◼ Do not apply voltages and currents that exceed input ratings of the PT and the CT to the product.

◼ Using the device for other purposes not specified by the manufacturer can cause severe damage to the

product.

◼ Connect the device’s chassis ground terminal to the earth ground to protect the device from noise and

surge.

About the Manual

Rootech Inc. reserves the right to make changes in the device specifications shown in this User Guide

without notice. Therefore, we recommend that customers should check the latest information on

specifications of the device before making orders.

In the absence of written agreements, Rootech Inc. assumes no liability for assistance with product

applications and the system design created by customers or legal issues, including infringement of

intellectual property arising from the use of modules described herein by third-parties.

We are committed to providing accurate information in this document. However, we assume no

responsibility for any errors in the document and reserves the right to make changes without 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 price paid 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 resulting from 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 provided by Rootech's personnel or representatives in system design 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 any product and associated

documentation. The original purchaser should acknowledge that 100% uptime is not guaranteed

because of possible hardware or software defects. The original purchaser should also recognize that

such defects and failures may cause inaccuracies or malfunctions.

Any agency, corporate entity, or individual employees of Rootech or other companies is not authorized

to amend, modify or extend warranty in any way.

Standard Compliance

Process Control Equipment

E324900

MSIP-REM-RTE-ACCURA 2300S

Accura 2300S/2350-1P3FSC User Guide

Warranty

Page 7

Revision History

The following version of 「Accura 2300S/2350-1P3FSC User Guide」 has been released.

Revision

Date

Description

Revision 1.20

February 15, 2019

Initial release

Revision 1.21

May 31, 2019

Added detailed description of DO pulse generation related to energy

Revision 1.22

September 25, 2019

Return to Accura 2350 module management policy

Voltage THD: extended to 40th harmonic (voltage 384-sampling/cycle)

Added measurement description for harmonics

Revision 1.23

July 14, 2021

Modified the Max/Min data errors in the General Measurement table

Updated standard compliance

Modified some images about connection as KEC revision

Contents 
 
Accura 2300S/2350-1P3FSC User Guide 
 
Page 8 
ⓒ 2015 Rootech Inc. All Rights Reserved 
 
Contents 
Chapter 1 Introduction ...................................................................................................................................................... 14 
Overview ................................................................................................................................................................................................................... 14 
Application ............................................................................................................................................................................................................... 17 
Device Lineup ......................................................................................................................................................................................................... 18 
Data Center Distribution Panel Digital Power Meter/Single-phase Three Feeder Power Measuring Module18 
Distribution Panel Digital Power Meter/General Power Measuring Module ................................................................. 18 
Special-Purpose Module ......................................................................................................................................................................... 19 
Installation Example ................................................................................................................................................................................... 20 
Features............................................................................................................................................................................................................ 22 
Chapter 2 Installation ......................................................................................................................................................... 25 
Environmental Conditions ................................................................................................................................................................................ 25 
Before you begin .................................................................................................................................................................................................. 26 
Meter Overview ........................................................................................................................................................................................... 26 
Components .................................................................................................................................................................................................. 27 
Dimension ....................................................................................................................................................................................................... 28 
Installation ...................................................................................................................................................................................................... 30 
Step 1: Mounting .................................................................................................................................................................................................. 32 
Accura 2300S Mounting .......................................................................................................................................................................... 32 
Accura 2350-1P3FSC Power Measuring Module Panel Installation ................................................................................... 33 
Step 2: Accura 2300S Wiring .......................................................................................................................................................................... 38 
Accura 2300S Voltage Connection ..................................................................................................................................................... 38 
Accura 2300S Digital Input/Output Wiring .................................................................................................................................... 43 
Step 3: Accura 2350-1P3FSC Through-hole Wiring ............................................................................................................................ 46 
Step 4: Accura 2350-1P3FSC-DIZCT Wiring ............................................................................................................................................ 50 
Step 5: Accura 2300S/2350 Combination of Communication ....................................................................................................... 53 
Step 6: Accura 2300S External Communication .................................................................................................................................... 55 
Ethernet Communication ........................................................................................................................................................................ 55 
RS-485 Communication ........................................................................................................................................................................... 57 
Step 7: Accura 2300S Power Supply and Ground Connection ...................................................................................................... 58 
Power Supply Connection....................................................................................................................................................................... 58 
Ground Terminal Connection ................................................................................................................................................................ 58 
Chapter 3 Accura 2350-1P3FSC Operation/Setup ........................................................................................................... 59 
Operation Mode .......................................................................................................................................................................................... 59 
Button Operation ........................................................................................................................................................................................ 59 
Display Mode ................................................................................................................................................................................................ 60 
Setup Mode ................................................................................................................................................................................................... 61 
Chapter 4 Accura 2300S Operation/Setup ..................................................................................................................... 70 

Accura 2300S/2350-1P3FSC User Guide 
Contents 
 
ⓒ 2015 Rootech Inc. All Rights Reserved 
Page 9 
 
Device Configuration .......................................................................................................................................................................................... 70 
Operation Mode .......................................................................................................................................................................................... 70 
LED Display .................................................................................................................................................................................................... 70 
Button Operation ........................................................................................................................................................................................ 70 
Display Mode ......................................................................................................................................................................................................... 72 
Front Display ................................................................................................................................................................................................. 72 
Accura 2350 Module ID Selection ...................................................................................................................................................... 74 
Display Full Screen ..................................................................................................................................................................................... 75 
Voltage/Current/Power ............................................................................................................................................................................. 76 
Voltage/Frequency ...................................................................................................................................................................................... 76 
Current.............................................................................................................................................................................................................. 77 
Power/Power Factor ................................................................................................................................................................................... 77 
Demand ........................................................................................................................................................................................................... 77 
Active Energy ................................................................................................................................................................................................ 78 
Leakage Current........................................................................................................................................................................................... 78 
Ethernet Information ................................................................................................................................................................................. 79 
Temperature/Time ....................................................................................................................................................................................... 80 
Setup Mode ............................................................................................................................................................................................................ 81 
Setup Full Screen ........................................................................................................................................................................................ 82 
Measurement Setup .................................................................................................................................................................................. 83 
Event Setup .................................................................................................................................................................................................... 88 
RS-485 Communication Setup ............................................................................................................................................................. 98 
Ethernet Communication Setup......................................................................................................................................................... 100 
Reset Setup .................................................................................................................................................................................................. 103 
Display Setup .............................................................................................................................................................................................. 104 
Accura 2350 Module ID Setup ........................................................................................................................................................... 107 
Information................................................................................................................................................................................................... 111 
Digital Input/Output Setup .................................................................................................................................................................. 112 
Event Log Mode.................................................................................................................................................................................................. 117 
Start Event and End Event .................................................................................................................................................................... 117 
Start Event Alarm Generation ............................................................................................................................................................. 117 
Start Event Alarm Clearing ................................................................................................................................................................... 117 
Button Function ......................................................................................................................................................................................... 118 
Event Log Number ................................................................................................................................................................................... 119 
Event Time-stamp ..................................................................................................................................................................................... 119 
Dip Event Log ............................................................................................................................................................................................. 120 
Swell Event Log .......................................................................................................................................................................................... 120 
Fuse Fail Event Log .................................................................................................................................................................................. 121 
Temperature Event Log .......................................................................................................................................................................... 121 

Contents 
 
Accura 2300S/2350-1P3FSC User Guide 
 
Page 10 
ⓒ 2015 Rootech Inc. All Rights Reserved 
 
Current Event Log ..................................................................................................................................................................................... 122 
Leakage Current Event Log .................................................................................................................................................................. 122 
Demand Current Event Log ................................................................................................................................................................. 123 
1P3FSC DI Event Log ............................................................................................................................................................................... 123 
No Event Log .............................................................................................................................................................................................. 123 
Required Setup Step ......................................................................................................................................................................................... 124 
Step 1: Accura 2300S Connection, PT Rating ............................................................................................................................. 124 
Step 2: Accura 2350 Communication ID Auto-Assignment and Update ...................................................................... 125 
Step 3: Accura 2300S Ethernet Setup ............................................................................................................................................. 128 
Chapter 5 Measurement Description............................................................................................................................. 129 
General Measurement ...................................................................................................................................................................................... 129 
Measurement Event .......................................................................................................................................................................................... 131 
Measurement for Voltage Connection .................................................................................................................................................... 132 
3-phase 4-wire ........................................................................................................................................................................................... 132 
3-phase 3-wire ........................................................................................................................................................................................... 133 
1-phase 3-wire ........................................................................................................................................................................................... 135 
1-phase 2-wire ........................................................................................................................................................................................... 136 
Dip[Sag]/Swell Measurement ....................................................................................................................................................................... 137 
Leakage Current Measurement ................................................................................................................................................................... 138 
Residual Voltage Measurement ................................................................................................................................................................... 138 
Phase Power Measurement ........................................................................................................................................................................... 139 
Power Factor(PF) Measurement ................................................................................................................................................................... 140 
PF Phase Angle Status Measurement ....................................................................................................................................................... 140 
Demand Measurement .................................................................................................................................................................................... 141 
Voltage Harmonics ............................................................................................................................................................................................ 142 
Current Harmonics ............................................................................................................................................................................................. 142 
Unbalance(NEMA MG1) .................................................................................................................................................................................. 143 
Sequence Unbalance ........................................................................................................................................................................................ 144 
Aggregation .......................................................................................................................................................................................................... 145 
Appendix A Specification ................................................................................................................................................ 147 
Appendix B Standard Compliance ................................................................................................................................. 150 
Appendix C Accuracy/Reliability .................................................................................................................................... 151 
Accuracy ........................................................................................................................................................................................................ 151 
Reliability ....................................................................................................................................................................................................... 152 
Appendix D Ordering Information ................................................................................................................................. 153 
 
 

Accura 2300S/2350-1P3FSC User Guide 
Contents 
 
ⓒ 2015 Rootech Inc. All Rights Reserved 
Page 11 
 
Figures 
Fig 1.1 Accura 2350-1P3FSC Dimension Compatibility for Each Rating of MCCB/ELB ............................................ 16 
Fig 1.2 Accura 2350-1P3FSC Power Measuring Module Installation ................................................................................ 16 
Fig  1.3  Accura  2300S/2350-1P3FSC  Installation  Example[Using  external  CT  and  Accura  2350-3P-CT5A 
model incoming feeder] .......................................................................................................................................................................... 20 
Fig 1.4 Accura 2300S/2350-1P3FSC Installation Example[Using Accura 2350-1PSCSH model at incoming 
feeder] .............................................................................................................................................................................................................. 21 
Fig 2.1 Accura 2300S Front .................................................................................................................................................................... 26 
Fig 2.2 Accura 2300S Side ...................................................................................................................................................................... 26 
Fig 2.3 Accura 2300S Rear ...................................................................................................................................................................... 26 
Fig 2.4 Accura 2350-1P3FSC Power Measuring Module ......................................................................................................... 27 
Fig 2.5 Accura 2300S Components .................................................................................................................................................... 27 
Fig 2.6 Accura 2350-1P3FSC Power Measuring Module Components ............................................................................ 27 
Fig 2.7 Accura 2300S Front Dimension ............................................................................................................................................ 28 
Fig 2.8 Accura 2300S Side Dimension .............................................................................................................................................. 28 
Fig 2.9 Accura 2300S Rear Dimension ............................................................................................................................................. 28 
Fig 2.10 Accura 2350-1P3FSC Power Measuring Module Dimension .............................................................................. 29 
Fig 2.11 Accura 2300S/2350-1P3FSC Installation [Using 1PSCSH module at incoming feeder] ......................... 30 
Fig 2.12 Accura 2300S/2350-1P3FSC Installation [Using 3P-CT5A module at incoming feeder] ....................... 31 
Fig 2.13 Accura 2300S Mounting ........................................................................................................................................................ 32 
Fig 2.14 Accura 2350-1P3FSC Power Measuring Module Installation[Using mounting wing] ............................. 33 
Fig 2.15 Accura 2350-1P3FSC Mounting Plate Cutout[Using mounting wing] ............................................................ 34 
Fig 2.16 Accura 2350-1P3FSC Mounting Plate [Using the lower part of power measuring module] .............. 35 
Fig 2.17 Accura 2350-1P3FSC Remodeling Installation[Using Cable tie] ........................................................................ 36 
Fig 2.18 Accura 2350-1P3FSC Remodeling Installation[Using lower part of module] ............................................. 37 
Fig 2.19 Accura 2300S Voltage Connection................................................................................................................................... 38 
Fig 2.20 Three-phase 4-wire Direct Connection .......................................................................................................................... 39 
Fig 2.21 Three-phase 4-wire 3PT Connection .............................................................................................................................. 39 
Fig 2.22 Three-phase 3-wire Direct Connection .......................................................................................................................... 40 
Fig 2.23 Three-phase 3-wire 2PT Connection .............................................................................................................................. 40 
Fig 2.24 Single-phase 3-wire Direct Connection ......................................................................................................................... 41 
Fig 2.25 Single-phase 3-wire 2PT Connection ............................................................................................................................. 41 
Fig 2.26 Single-phase 2-wire Direct Connection ......................................................................................................................... 42 
Fig 2.27 Single-phase 2-wire 1PT Connection ............................................................................................................................. 42 
Fig 2.28 Accura 2300S Digital Input/Output Channel .............................................................................................................. 43 
Fig 2.29 Digital Input ................................................................................................................................................................................ 43 
Fig 2.30 DC Relay Application .............................................................................................................................................................. 45 
Fig 2.31 AC Relay Application............................................................................................................................................................... 45 

Contents 
 
Accura 2300S/2350-1P3FSC User Guide 
 
Page 12 
ⓒ 2015 Rootech Inc. All Rights Reserved 
 
Fig 2.32 Accura 2350-1P3FSC Through-hole Installation Position ..................................................................................... 47 
Fig 2.33 Accura 2350-1P3FSC Measurement Principle ............................................................................................................. 47 
Fig 2.34 Three-phase 4-wire Through-hole Wiring .................................................................................................................... 48 
Fig 2.35 Three-phase 3-wire Through-hole Wiring .................................................................................................................... 49 
Fig 2.36 Digital Input 4 Channels of Option Module ............................................................................................................... 50 
Fig 2.37 ZCT Input 3 Channels of Option Module ..................................................................................................................... 51 
Fig 2.38 ZCT Wiring ................................................................................................................................................................................... 51 
Fig 2.39 Digital Input and ZCT Wiring of Option Module ..................................................................................................... 52 
Fig 2.40 Accura 2300S/2350 Combination Example of Communication ......................................................................... 53 
Fig 2.41 Accura 2300S Ethernet Communication Port ............................................................................................................. 55 
Fig 2.42 Accura 2300S Ethernet Communication ....................................................................................................................... 56 
Fig 2.43 Accura 2300S RS-485 Communication .......................................................................................................................... 57 
Fig 2.44 Accura 2300S RS-485 Communication Connection ................................................................................................ 57 
Fig 2.45 Accura 2300S Power Supply ............................................................................................................................................... 58 
Fig 4.1 Accura 2300S Front configuration ...................................................................................................................................... 70 
Fig 4.2 Screen of Display Mode ........................................................................................................................................................... 71 
Fig 4.3 Screen of Setup Mode .............................................................................................................................................................. 71 
Fig 4.4 Screen of Event Log Mode ..................................................................................................................................................... 71 
Fig 4.5 Accura 2300S Front View ........................................................................................................................................................ 72 
Fig 4.6 Accura 2300S Temperature Sensor ..................................................................................................................................... 73 
Fig 4.7 Accura 2350 Module ID Selection at upper part of LCD Screen ........................................................................ 74 
Fig 4.8 Line-to-neutral Voltage/Current/Power Display Screen ........................................................................................... 76 
Fig 4.9 Line-to-line Voltage/Current/Power Display Screen .................................................................................................. 76 
Fig 4.10 Line-to-line Voltage Display Screen ................................................................................................................................ 76 
Fig 4.11 Current Display Screen .......................................................................................................................................................... 77 
Fig 4.12 Active Power Display Screen ............................................................................................................................................... 77 
Fig 4.13 Demand Active Power Display Screen ........................................................................................................................... 78 
Fig 4.14 Net Energy Display Screen of Feeder 1 ........................................................................................................................ 78 
Fig 4.15 Leakage Current Display Screen........................................................................................................................................ 79 
Fig 4.16 Ethernet Connection Display Screen ............................................................................................................................... 79 
Fig 4.17 Accura 2300S Rear Surface Temperature Display Screen ..................................................................................... 80 
Fig 4.18 3-phase 4-wire connection[3P4W]: PT Primary VAB , Secondary V12............................................................... 83 
Fig 4.19 3-phase 3-wire connection[3P3W]: PT Primary VAB , Secondary V12............................................................... 84 
Fig 4.20 1-phase 3-wire connection[1P3W]: PT Primary VL12 , Secondary V13 ............................................................. 84 
Fig 4.21 1-phase 2-wire connection[1P2W]: PT Primary VL12 , Secondary V1N ............................................................. 84 
Fig 4.22 Dip Event Setup[3-phase 4-wire] ...................................................................................................................................... 89 
Fig 4.23 Dip Event Setup[3-phase 3-wire] ...................................................................................................................................... 89 
Fig 4.24 Swell Event Setup[3-phase 4-wire] .................................................................................................................................. 91 
Fig 4.25 Swell Event Setup[3-phase 3-wire] .................................................................................................................................. 91 

Accura 2300S/2350-1P3FSC User Guide

Contents

Page 13

Fig 4.26 Dip[Sag] Event Alarm Display ........................................................................................................................................... 117

Fig 4.27 Swell Event Alarm Display .................................................................................................................................................. 117

Fig 4.28 Event Log Number Example ............................................................................................................................................. 119

Fig 5.1 3PT 3P4W Connection ............................................................................................................................................................ 132

Fig 5.2 2PT 3P3W Connection ............................................................................................................................................................ 133

Fig 5.3 2PT 1P3W Connection ............................................................................................................................................................ 135

Fig 5.4 1PT 1P2W Connection ............................................................................................................................................................ 136

Fig 5.5 Half-cycle Refreshed 1-cycle RMS Calculation............................................................................................................ 137

Fig 5.6 Voltage Dip[Sag] Detection .................................................................................................................................................. 137

Fig 5.7 Power Sign and PF Phase Angle Status ......................................................................................................................... 140

Fig 5.8 Demand Calculation ................................................................................................................................................................ 141

Fig 5.9 Prediction Demand Calculation .......................................................................................................................................... 141

Fig 5.10 Voltage FFT Data Processing (~MCU F/W 3.50) ..................................................................................................... 142

Fig 5.11 Voltage FFT Data Processing (MCU F/W 3.51~) ..................................................................................................... 142

Fig 5.12 Current FFT Data Processing............................................................................................................................................. 143

Fig 5.13 Symmetrical Components .................................................................................................................................................. 144

Fig 5.14 Aggregation Process ............................................................................................................................................................. 145

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 14

Chapter 1 Introduction

Overview

Energy Management Paradigm Shift from Main Load to Branch Load

In the energy low-cost era, total energy management centered on switchgear panels such as main

feeder (from feeder to ABS) for stable power supply played an important role. However, there is an

increasing demand to manage the branch load electrical energy in manufacturing plants, IDC centers,

and the distribution boards of buildings when the energy costs rise sharply and the CO2 emission

reduction policy is implemented in 2015.

Limit of Applying the Switchgear Panel Digital Power Meter to Distribution Panel

To apply the digital power meter which is long used in the existing switchgear panel to distribution

panel has had the limit caused by narrow space, hazardous wiring of voltage and current, and high

installation cost. This fundamentally makes it difficult for energy management supervisor to access to

the energy information of branch loads in distribution panel.

Distribution Panel Digital Power Meter Specialized for Branch Load Management

Distribution panel digital power meter comprises both Accura 2300S[digital power meter] which is

mounted on front of distribution panel, and Accura 2350[power measuring module] which is mounted in

branch loads inside the panel. Accura 2300S collects power data from several Accura 2350s on RS-485

communication and displays measurements of only one Accura 2350 selected on its LCD screen. This

provides energy management supervisor with the power quality information of branch loads which was

impossible to identify.

Accura 2350-1P3FSC Single-phase Three Feeder Power Measuring Module, Suitable for Data Center

Distribution Panel Having Multiple Single-phase Feeders

Data center distribution panel has multiple single-phase feeders of the same current capacity. Accura

2350-1P3FSC single-phase three feeder power measuring module measures three single-phase feeders

of the same current capacity at the same time. Installation time and cost can be drastically reduced

comparing to installment of Accura 2350-1P[1PSC] single-phase power measuring module.

Accura 2350-1P3FSC-DIZCT Single-phase Three Feeder Power Measuring Module[Option Module]

Supporting the Monitoring of Leakage Current for Each Single-phase Feeder, and MCCB Trip-status

Accura 2350-1P3FSC-DIZCT single-phase three feeder power measuring module[Option module]

provides the additional function to monitor both leakage current and MCCB trip-status of each single-

phase feeder by expanding the function of Accura 2350-1P3FSC single-phase three feeder power

measuring module[Basic module]. This makes it possible to do not only the energy management but

also the safety management for consistency of power supply.

Accura 2300S/2350-1P3FSC User Guide

Chapter 1 Introduction

Page 15

Voltage ±0.2% Reading/Current ±0.5% Reading/IEC62053-22 Class 0.5S

Recently enterprise energy management system is essential for effective energy use and preventive

management to prepare CO2 emission management in data center, plant and building. The key factor to

determine reliability of the energy management is measuring accuracy. Accura 2300S/2350 supports

precision measurement of ±0.2% reading error of voltage and ±0.5% 1 reading error of current, and

conforms to IEC62053-22 class 0.5S for power and energy. This makes it possible to precisely analyze

and diagnose various problems with energy management and power facilities.

1. Single-phase three feeder power measuring module can increase the error of up to ±1% reading value depending

on the penetration position of power cable.

Dip[Sag]/Swell[IEC61000-4-30], Power Quality

Accura 2300S provides a variety of power quality information, including dip[sag], swell and harmonic

information[up to 40th], crest factor, K-factor, and unbalance ratio. This enables the energy manager to

easily identify power quality changes in various power distribution systems in the power plant, thus

realistic power quality management is possible. Power quality information conforms to IEC61000-4-30.

Maximum/Minimum/Average during Aggregation Interval

Accura 2300S calculates average at every 0.5 second interval from measurements at cycle time,

providing maximum/minimum/average at 1 second, 5 second, 1 minute, 5 minute, 1 hour and 6 hour

intervals from average at every 0.5 second interval. The measuring interval which is more than 0.5

second interval is called aggregation interval.

Accura 2300S provides both of maximum/minimum/average at each aggregation interval and time

information[time stamp] at the time of generation, as well as average at 0.5 second interval about

various measuring parameters such as voltage, current, power, and etc on communication. This includes

information of the measuring parameters fluctuating instantaneously, which makes it possible to

precisely analyze the trend of quality of voltage, current, and power.

Proven Safety and Reliability with CE/UL/KC

The structure-framework, circuit, and fire of Accura 2300/2350 conforms to standard CE[EN61326-1,

EN61326-2-1], UL[UL61010-1], and KC[KN22, KN24].

All-in-one Installation with MCCB/ELB Having the Same Current Rating

Accura 2350-1P3FSC single-phase three feeder power measuring module is installed all-in-one with the

existing MCCB because the distance between through-holes of the module on two kinds of current

rating, 60A and 125A is compatible with that between terminals of MCCB/ELB.

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 16

Fig 1.1 Accura 2350-1P3FSC Dimension Compatibility for Each Rating of MCCB/ELB

Split-core Structure Possible to Install on Live Wire

Accura 2350-1P3FSC single-phase three feeders power measuring module makes it possible to install

without power interruption by split-core structure.

Fig 1.2 Accura 2350-1P3FSC Power Measuring Module Installation

Accura 2300S/2350-1P3FSC User Guide

Chapter 1 Introduction

Page 17

Application

Enterprise Energy Management

Providing energy information of branch loads in distribution panel, Accura 2300S/2350 together with

Accura 3300S/3500S/3550S/3700/7500 mounted in switchgear panels truly makes it possible to realize

enterprise energy management system.

Data Center Energy Management on Each Server

Accura 2350-1P3FSC single-phase three feeder power measuring module is optimized for server

distribution panel with multiple single feeders of the same current capacity, measuring three single

feeders per one module. In addition, Accura 2350-1P3FSC-DIZCT single-phase three feeder power

measuring module[option module] supports safety management by monitoring both leakage current of

each feeder and MCCB trip-status.

CO2 Emission Management by Reduction of High Energy Cost

Accura 2300S/2350 provides various power quality information which enables management of energy

use, power facility operation and high efficiency device analysis. This can be an essential infrastructure

for management of CO2 emission, presenting the exact analytic criterion on energy usage status to

energy management supervisor.

Energy Efficiency Verification of High Efficiency Device

Accura 2300S/2350 provides high accuracy energy information to determine the efficiency of high

efficiency device such as LED, lighting, motor, and power facility.

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 18

Device Lineup

Data Center Distribution Panel Digital Power Meter/Single-phase Three Feeder Power

Measuring Module

Data center distribution panel digital power meter comprises Accura 2300S [digital power meter] which

is mounted at the front of distribution panel, and Accura 2350-1P3FSC which is mounted per 3 feeders

inside the panel. Accura 2300S collects and display data from the large number of Accura 2350-1P3FSC

using the 6C telephone line 1.

Device

Model

Description

Weight

Distribution panel digital

power meter

Accura 2300S

Collects data from all Accura 2350s

487 g

Selectively displays one Accura 2350 2

Ethernet[or RS-485] communication

Temperature of Accura 2300S rear side 3

Single-phase three feeder

Power measuring module

Accura 2350-1P3FSC-125A

Current measurement rating 125A

457 g

Accura 2350-1P3FSC-125A-DIZCT

Current measurement rating 125A,

option[connects DI, ZCT]

468 g

Accura 2350-1P3FSC-60A

Current measurement rating 60A

393 g

Accura 2350-1P3FSC-60A-DIZCT

Current measurement rating 60A,

option[connects DI, ZCT]

404 g

1. Packaged with device. Core conductor of telephone line should be minimum 0.128mm2[26 AWG]. Distance from

the power line should be 5mm or more so that communication interference caused by the noisy power line will not

occur.

2. Accura 2300S displays only measurements of one Accura 2350 selected. Refer to “Chapter 4 Accura 2300S

Operation/Setup > Display Mode > Module ID Selection”.

3. It is not for firewatching, but for reference only. A temperature sensor is mounted on the rear of Accura 2300S.

Distribution Panel Digital Power Meter/General Power Measuring Module

Refer to “Accura 2300S/2350 User Guide” for details of distribution panel digital power meter except for

the Accura 2350-1P3FSC which measures the three single-phase feeder at the same time.

Accura 2300S/2350-1P3FSC User Guide

Chapter 1 Introduction

Page 19

Special-Purpose Module

Accura 2350 module for special purpose in addition to measuring module is as follows. Refer to “Accura

2300S/2350 User Guide” for more details about these special-purpose modules.

Module

Model

Description

GAS

Accura 2350-GAS

Gas concentration of the surroundings

GW[Gateway]

Accura 2350-GW

Collects data of device that supports RS-485 communication.

TEMP[Temperature]

Accura 2350-TEMP

External temperature measurements of the panel where the module

is installed

Accura TSEN

Temperature measurements at the location where the module is

installed inside the distribution panel

Accura 2350-TEMPS

Simultaneous measurement of internal and external temperature

[based on temperature measuring module installation surface]

DO[Digital Output]

Accura 2350-DO

Provides digital output which is able to be controlled in remote and

from Accura 2300S.

IDC[DC Current Input]

Accura 2350-IDC

Analog current input [-20mA to 20mA]

VDC[DC Voltage Input]

Accura 2350-VDC

Analog voltage input [-50V to 50V]

DCM[DC voltage/current]

Accura 2350-DCM

-50V-80A

Measurement up to DC 50V and 80A

-500V--80A

Measurement up to DC 500V and 80A

Chapter 1 Introduction

Accura 2300S/2350-1P3FSC User Guide

Page 20

Installation Example

Accura 2300S/2350-1P3FSC Installation Example[Accura 2350-3P-CT5A using external CT is used at

the incoming feeder]

The following is the installation example of single-phase three feeder power measuring module

optimized for distribution panel branching single-phase power line of the same current capacity.

However, as the incoming feeder has large current capacity and three-phase power line, it cannot be

measured by Accura 2350-1P3FSC. In this case, Accura 2350-3P-CT5A using external CT is installed in Fig

1.3 or Accura 2350-1PSCSH installed in Fig 1.4. Refer to “Accura 2300S/2350 User Guide” for the details

about Accura 2350-3P-CT5A-75 and Accura 2350-1PSCSH.

Fig 1.3 Accura 2300S/2350-1P3FSC Installation Example[Using external CT and Accura 2350-3P-

CT5A model incoming feeder]

1. If through-hole current exceeds 250A, Accura 2350-3P-CT5A-75 using external CT should be chosen.

Refer to “Accura 2300S/2350 User Guide” for details about Accura 2350-3P-CT5A-75.

2. Packaged with device. Core conductor of telephone line should be minimum 0.128mm2[26 AWG], and is

recommended as the distance more than 5mm with power line which creates a lot of noise not to cause

communication interferences.

3. Only for communication with host program.

Installation

Front panel

Accura 2300S

Distribution panel digital meter

Incoming feeder

Accura 2350-3P-CT5A-75 1

Three-phase power measuring

module

Branch load

Accura 2350-1P3FSC-125

Accura 2350-1P3FSC-60

Single-phase three feeder power

measuring module

Communication

6C telephone line 2

Only for internal communication

Ethernet 3

Only for external communication

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ROOTECH Accura 2300S/2350-1P3FSC User guide

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