ROOTECH Accura 2300S/2350 User guide

ACCURA 2300S/2350

Distribution Panel Digital Power Meter/Power Measuring Module

Actually makes possible enterprise energy management

User Guide[English]

Revision 1.10 2014/12/23

(장치 N단자전압)

Distribution Panel Digital Power Meter

Accura 2300S

Accura 2300S rear view

Three Phase Power Measuring Module

Single Phase Power Measuring Module

Accura 2350-3P-250A-105

TM-3P-105

Accura 2350-1P-250A-105

TM-1P-105

Accura 2350-3P-125A-90

TM-3P-90

Accura 2350-1P-125A-60

TM-1P-60

Accura 2350-3P-100A-75

TM-3P-75L

Accura 2350-1P-100A-50

TM-1P-50L

Accura 2350-3P-60A-75

TM-3P-75

Accura 2350-1P-60A-50

TM-1P-50

Accura 2350-3P-CT5A-75

Accura 2350-1PSH-50A-35

Accura 2350-1PSH-30A-35

Split-core Three Phase

Power Measuring Module

Split-core Single Phase

Power Measuring Module

Split-core Single Phase Single Hole

Power Measuring Module

Accura 2350-3PSC-250A-105

Accura 2350-1PSC-250A-105

Accura 2350-1PSCSH-800A

Accura 2350-3PSC-125A-90

Accura 2350-1PSC-125A-60

Accura 2350-1PSCSH-630A

Accura 2350-3PSC-60A-75

Accura 2350-1PSC-60A-50

Accura 2350-1PSCSH-400A

Notice

Symbol

Caution

Indicates the presence of dangerous voltage which can cause severe injury or

death to persons if proper precautions are not followed.

Warning

Alerts the user to the presence of hazards which can cause somewhat injury to

persons, damage to property or damage to the device itself, if proper precautions

are not followed.

Note

Indicates the user’s attention to installation, operating and maintenance

instructions.

Indicates alternative voltage or current.

Indicates direct voltage or current.

Installation Considerations

Installation and operation of Accura 2300S/2350 should be performed only by qualified, competent

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

Caution

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

 During normal operation of the Accura 2300S/2350, hazardous voltages are present on its terminal strips of

voltages input and power.

 Standard safety precautions are followed while performing any installation or service work[removing PT fuses,

shorting CT secondaries, etc].

 Do not access to terminal strips of the Accura 2300S/2350 after installation.

Accura 2300S/2350 User Guide

Notice

Page 5

Warning

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

 Do not apply Accura 2300S/2350 to voltages and currents that exceed Input ratings of PT and CT

 To use device in the other way than specified by manufacturer can cause severe damage.

 Connect ground terminal to the earth ground to protect device from noise and surge.

 Terminal screw torque is followed.

- barrier-type voltage terminal:1.35Nm[1.00 ft-lbf] max.

- barrier-type digital inputs/digital output terminal:0.90Nm[0.66 ft.lbf] max.

Limitation of Liability

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

Guide without notice. Rootech Inc. advises customers to obtain the latest specifications of device

before giving orders to confirm that the information being relied on by the customer is up to date.

Inc. applications assistance, customer’s system design, or infringement of patents or copyrights of

third parties by or arsing from the use of devices described herein.

Except to the extent prohibited by applicable law, under no circumstances shall Rootech Inc. be

liable for consequential damages sustained in connection with said product and Rootech Inc. neither

assumes nor authorizes any representative or other person any obligation or liability other than such

as is expressly set forth herein.

Accura EMeter, Accura 2300/2350, Accura 2300S/2350, Accura 2500, Accura 3300S/3300,

Accura 3500S/3500, Accura 3550S/3550, Accura 3700, Accura 5500, Accura 7500 are

trademarks of Rootech Inc.

The information contained in this document is believed to be accurate at the time of publication,

however, Rootech Inc. assumes no responsibility for any errors which may appear here and reserves

the right to make changes without notice.

.

Notice

Accura 2300S/2350 User Guide

Page 6

Standard Compliance

CE Approved

EN61326 and IEC61010

MEASURING EQUIPMENT

35DX

E258934

KCC-REM-RTE-ACCURA 2300S

KS Q ISO 9001:2009/ ISO 9001:2008

Certificate No: QMS-1347

Accura 2300S/2350 User Guide

Warranty Information

Page 7

Warranty Information

For products and software that are sold or licensed by Rootech Inc. during the period from the date

of receipt by you until the present, Rootech warrants only to the original purchaser

The purchased products shall be substantially free from material defects in material and

workmanship by Rootech for two years from the date receipt by you.

The software itself is provided “as is” without any warranty of any kind.

Limitation of Warranty

These limited Warranties shall not apply to any product that has been subject to alteration, accident,

misuse, abuse, neglect or failure to exactly follow Power Measurement's instructions for operation

and maintenance.

In order for the original purchaser to make a claim under the warranties described above, the

original purchaser must promptly contact Rootech headquarter. After receiving such notice, Rootech

may either in Rootech’s sole discretion, examine the product at the original purchaser’s site or issue

shipping instructions to the original purchaser to return the relevant product to Rootech for

examination at the original purchaser’s expense, transportation charges prepaid.

If after examining the product Rootech reasonably confirms that such examined product does not

meet the warranties, then the original purchaser’s sole remedy and Rootech’s sole obligation or

liability shall be, at Rootech’s option, to repair, replace or refund the price paid for that product.

Regardless of whether any remedy set forth herein fails of its essential purpose, except to the extent

the following limitation is prohibited by applicable law, Rootech shall not, in any event or under any

legal claim or theory, be liable to the original purchaser or any other person or entity for special,

indirect, incidental, punitive, liquidated, special or consequential damages whatsoever with respect

to any purchased product, including, without limitation, business interruption, loss of use, profit or

revenue, even if Rootech has been advised of the possibility of such damages. To the extent that a

limitation or exclusion of consequential damages are prohibited by app

licable law, then Rootech’s liability shall be limited to twice the amount of the relevant purchased

product.

Rootech shall not be liable for any claim- other than a claim solely for the breach of one of the

Revision History

Accura 2300S/2350 User Guide

Page 8

above warranties that is made in accordance with the above described procedures- made by the

original purchaser, its employees, agents, or contractors for any loss, damage, or expense incurred

due to, caused by, or related to any purchased product

Any technical assistance provided by Rootech's personnel or representatives in system design shall

be deemed to be a proposal and not a recommendation. The responsibility for determining the

feasibility of such proposals rests with the original purchaser and should be tested by the original

purchaser.

It is the original purchaser’s responsibility to determine the suitability of any product and associated

documentation for its purposes. The original purchaser acknowledges that 100% "up" time is not

realizable because of possible hardware or software defects. The original purchaser recognizes that

such defects and failures may cause inaccuracies or malfunctions.

Only the terms expressed in these limited Warranties shall apply and no distributor, corporation or

other entity, individual or employee of Rootech or any other entity is authorized to amend, modify or

extend the Warranties in any way.

Accura 2300S/2350 User Guide

Warranty Information

Page 9

Revision History

The following versions of the Accura 2300S/2350 User Guide have been released.

Revision

Date

Description

Revision 1.00

2014. 02. 14

Initial draft

Revision 1.10

2014. 12. 23

Configuration and measurement description added.

Special-purpose module description

[Accura 2350-GAS/GW/DO/VDC/IDC/TEMP] added.

Contents

Accura 2300S/2350 User Guide

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Contents

Chapter 1 Introduction .................................................................................................................... 18

Overview ........................................................................................................................................ 18

Application ...................................................................................................................................... 21

Device Lineup.................................................................................................................................. 22

Distribution Panel Digital Meter/Power Measuring Module ........................................................... 22

Special-Purpose Module ............................................................................................................ 23

Installation Example .................................................................................................................. 24

Feature ..................................................................................................................................... 26

Chapter 2 Installation ...................................................................................................................... 32

Environmental Conditions ................................................................................................................ 32

Before you begin ............................................................................................................................. 33

Meter Overview ......................................................................................................................... 33

Components ............................................................................................................................. 35

Dimension ................................................................................................................................ 37

Installation Single Diagram ........................................................................................................ 43

Step 1: Mounting ............................................................................................................................. 46

Accura 2300S Mounting ............................................................................................................ 46

Accura 2350-3P Three Phase Power Measuring Module Mounting ............................................... 47

Accura 2350-1P Single Phase Power Measuring Module Mounting .............................................. 52

Accura 2350-3PSC Split-core Three Phase Power Measuring Module Mounting ............................ 57

Accura 2350-1PSC Split-core Single Phase Power Measuring Module Mounting ........................... 62

Accura 2350-1PSCSH Split-core Single Phase Single Hole Power Measuring Module Mounting ..... 67

Step 2: Accura 2300S Wiring ........................................................................................................... 71

Accura 2300S Voltage Wiring .................................................................................................... 71

Accura 2300S Digital Input/Output Wiring ................................................................................. 76

Step 3: Accura 2350 Through-hole Wiring ........................................................................................ 79

Accura 2350 Power Measuring Module Through-hole Wiring ...................................................... 79

Accura 2350 Single Phase Single Hole Power Measuring Module Through-hole Wiring ................. 84

Step 4: Accura 2300S/2350 Combination of Communication ........................................................... 87

Step 5: Accura 2300S External Communication[Ethernet, RS485] ....................................................... 89

Ethernet Communication ........................................................................................................... 89

RS485 Communication .............................................................................................................. 91

Step 6: Accura 2300S Power Supply and Ground .............................................................................. 92

Power Supply............................................................................................................................. 92

Accura 2300S/2350 User Guide

Contents

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Ground Terminal ....................................................................................................................... 92

Chapter 3 Accura 2350 Operation/Setup .......................................................................................... 93

Operation Mode ....................................................................................................................... 93

Button Function ......................................................................................................................... 93

Accura 2350-3P[3PSC] Three Phase Power Measuring Module .......................................................... 94

Application Model ..................................................................................................................... 94

Display Mode ............................................................................................................................ 95

Setup Mode .............................................................................................................................. 97

Accura 2350-1P[1PSC] Single Phase Power Measuring Module ........................................................ 107

Application Model ................................................................................................................... 107

Display Mode .......................................................................................................................... 108

Setup Mode ............................................................................................................................ 110

Accura 2350-1PSCSH Split-core Single Phase Single Hole Power Measuring Module ........................ 119

Application Model ................................................................................................................... 119

Display Mode .......................................................................................................................... 120

Setup Mode ............................................................................................................................ 122

Chapter 4 Accura 2300S Operation/Setup ...................................................................................... 133

Operation Mode ..................................................................................................................... 133

LED ........................................................................................................................................ 134

Button Function ....................................................................................................................... 134

Display Mode ................................................................................................................................ 136

Front Display ........................................................................................................................... 136

Accura 2350 Module ID Selection ............................................................................................ 139

Display Screen ........................................................................................................................ 140

Voltage/Current/Power/Energy[V∙I∙P∙E]...................................................................................... 141

Voltage/Frequency[V∙FREQ] ..................................................................................................... 142

Current[I] ................................................................................................................................ 142

Power/Power Factor[P∙PF] ......................................................................................................... 143

Demand[DEMAND] ................................................................................................................. 143

Active Energy[ENERGY] ............................................................................................................ 144

Leakage Current[MODULE] ..................................................................................................... 144

RSTP Information[INFO] ........................................................................................................... 145

Temperature/Time[ETC] ........................................................................................................... 146

Setup Mode................................................................................................................................... 147

Setup Mode Display Screen ...................................................................................................... 149

Meter ...................................................................................................................................... 150

Contents

Accura 2300S/2350 User Guide

Page 12

Event[EVENT] .......................................................................................................................... 156

RS485 Communication[COMM] ............................................................................................... 166

Ethernet Communication[NETWORK] ....................................................................................... 167

Reset[RESET] ............................................................................................................................ 170

Display[DISPLAY] ..................................................................................................................... 171

Accura 2350 Module ID[MODULE] .......................................................................................... 173

Accura 2350-1P Three Phase Device Group[MODULE] ............................................................. 178

Information[INFO] ................................................................................................................... 181

Digital Input/Output[ETC] ........................................................................................................ 182

Event Log Mode............................................................................................................................. 187

Start Event & End Event ............................................................................................................ 187

Start Event Alarm On ............................................................................................................... 187

Start Event Alarm Off ............................................................................................................... 187

Button Function ....................................................................................................................... 188

Event Log Number Assignment ................................................................................................. 189

Dip Event Log .......................................................................................................................... 190

Swell Event Log ....................................................................................................................... 190

Fuse Fail Event Log .................................................................................................................. 191

Temperature Event Log ............................................................................................................ 192

Current Event Log .................................................................................................................... 192

Leakage Current Event Log ...................................................................................................... 193

Demand Current Event Log ...................................................................................................... 194

Required Configuration Step .......................................................................................................... 195

Step 1: Accura 2300S Connection, PT Rating ............................................................................ 195

Step 2: Accura 2350 Module ID Auto-Assignment/Update ........................................................ 197

Step 3: Accura 2300S Ethernet ................................................................................................. 200

Chapter 5 Measurement Description ............................................................................................... 201

General Measurement Factor ......................................................................................................... 201

Measurement Event Factor ............................................................................................................. 204

Measurement for Voltage Connection ............................................................................................. 205

Three Phase Four Wires ........................................................................................................... 205

Three Phase Three Wires ......................................................................................................... 206

Single Phase Three Wires ......................................................................................................... 208

Single Phase Two Wires............................................................................................................ 209

Power Measurement for Each Phase ............................................................................................... 210

Method 1[Fundamental Calculation] ........................................................................................ 210

Accura 2300S/2350 User Guide

Contents

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Method 2[Harmonic Calculation] ............................................................................................. 210

Three Phase Total Power Measurement ........................................................................................... 211

Method 1[Vector Sum] ............................................................................................................. 211

Method 2[Arithmetic Sum] ........................................................................................................ 212

Power Factor[PF] Measurement ....................................................................................................... 213

Current Phase LEAD/LAG Measurement ......................................................................................... 213

Demand Measurement .................................................................................................................. 214

Demand ................................................................................................................................. 214

Prediction Demand .................................................................................................................. 214

Dip[Sag]/Swell Measurement ......................................................................................................... 214

Half-cycle Refreshed 1-cycle RMS ............................................................................................. 215

Dip[Sag]/Swell Detection ......................................................................................................... 215

Unbalance[NEMA MG1] ................................................................................................................ 216

Line-Neutral Voltage Unbalance .............................................................................................. 216

Line-Line Voltage Unbalance.................................................................................................... 216

Sequence Unbalance ..................................................................................................................... 216

Negative Sequence Unbalance Ratio ........................................................................................ 217

Zero Sequence Unbalance Ratio .............................................................................................. 217

Aggregation .................................................................................................................................. 217

Fixed Aggregation ................................................................................................................... 218

Customed Aggregation ............................................................................................................ 218

Event Aggregation ................................................................................................................... 218

Aggregation Data Collection .................................................................................................... 219

APPENDIX A Specification .............................................................................................................. 220

APPENDIX B Standard Compliance ................................................................................................. 224

APPENDIX C Accuracy/Reliability .................................................................................................... 225

Accuracy ................................................................................................................................. 225

Reliability ................................................................................................................................ 227

APPENDIX D Ordering Information ................................................................................................. 228

Distribution Panel Digital Power Meter/Power Measuring Module ............................................... 228

Special-Purpose Module .......................................................................................................... 229

INDEX.......................................................................................................................................... 230

Contents

Accura 2300S/2350 User Guide

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Figures

Fig 1.1 Through-hole Structure ................................................................................................... 19

Fig 1.2 Accura 2350-3P[1P] Compatibility with MCCB/ELB in Dimension ..................................... 20

Fig 1.3 Accura 2350-3PSC Split-core Three Phase Power Measuring Module Installation .............. 20

Fig 1.4 Power Measuring Module Installation Example ................................................................ 24

Fig 1.5 Split-core Power Measuring Module Installation Example ................................................. 25

Fig 2.1 Accura 2300S Front ....................................................................................................... 33

Fig 2.2 Accura 2300S Side ........................................................................................................ 33

Fig 2.3 Accura 2300S Rear ........................................................................................................ 33

Fig 2.4 Accura 2350-3P[1P] Power Measuring Module ................................................................ 34

Fig 2.5 Accura 2350-3PSC[1PSC, 1PSCSH] Split-core Power Measuring Module........................... 34

Fig 2.6 Accura 2300S Component ............................................................................................. 35

Fig 2.7 Accura 2350-3P Three Phase Power Measuring Module Component ................................ 35

Fig 2.8 Accura 2350-1P Single Phase Power Measuring Module Component ............................... 35

Fig 2.9 Accura 2350-1PSH Single Phase Single Hole Power Measuring Module Component ......... 35

Fig 2.10 Accura 2350-1PSC Split-core Single Phase Power Measuring Module Component .......... 36

Fig 2.11 Accura 2350-1PSCSH Split-core Single Phase Single Hole Power Measuring Module

Component............................................................................................................................... 36

Fig 2.12 TM-3P Three Phase Terminal Component ...................................................................... 36

Fig 2.13 TM-1P Single Phase Terminal Component ..................................................................... 36

Fig 2.14 Accura 2300S Front Dimension .................................................................................... 37

Fig 2.15 Accura 2300S Rear Dimension ..................................................................................... 37

Fig 2.16 Accura 2300S Side Dimension ..................................................................................... 37

Fig 2.17 Accura 2350-3P Three Phase Power Measuring Module Dimension ................................ 38

Fig 2.18 TM-3P Three Phase Terminal Dimension ....................................................................... 38

Fig 2.19 Accura 2350-1P Single Phase Power Measuring Module ................................................ 39

Fig 2.20 TM-1P Single Phase Terminal ........................................................................................ 39

Fig 2.21 Accura 2350-1PSH Single Phase Single Hole Power Measuring Module .......................... 40

Fig 2.22 Accura 2350-3PSC Split-core Three Phase Power Measuring Module .............................. 40

Fig 2.23 Accura 2350-1PSC Split-core Single Phase Power Measuring Module ............................. 41

Fig 2.24 Accura 2350-1PSCSH Split-core Single Phase Single Hole Power Measuring Module ....... 41

Fig 2.25 Accura 2300S/2350-3P[1P] Power Measuring Module Installation Single Diagram.......... 43

Fig 2.26 Accura 2300S/2350-3PSC[1PSC, 1PSCSH] Split-core Power Measuring Module Installation

Single Diagram ......................................................................................................................... 44

Fig 2.27 Accura 2300S Mounting[ANSI 4’’] ................................................................................ 46

Accura 2300S/2350 User Guide

Contents

Page 15

Fig 2.28 Accura 2300S Mounting[DIN96] ................................................................................... 46

Fig 2.29 Accura 2350-3P Three Phase Power Measuring Module Mounting .................................. 47

Fig 2.30 Accura 2350-3P Three Phase Power Measuring Module/Terminal Cutout ........................ 48

Fig 2.31 Accura 2350-3P Three Phase Power Measuring Module Mounting Plate/Terminal Cutout 50

Fig 2.32 Accura 2350-1P Single Phase Power Measuring Module Mounting ................................. 52

Fig 2.33 Accura 2350-1P Single Phase Power Measuring Module/Terminal Cutout ....................... 53

Fig 2.34 Accura 2350-1P Single Phase Power Measuring Module Mounting Plate/Terminal Cutout 55

Fig 2.35 Accura 2350-3PSC Split-core Power Measuring Module New Installation ........................ 57

Fig 2.36 Accura 2350-3PSC Split-core Three Phase Power Measuring Module Cutout ................... 58

Fig 2.37 Accura 2350-3PSC Mounting Plate Cutout .................................................................... 60

Fig 2.38 Accura 2350-3PSC Split-core Power Measuring Module Remodeling Installation ............. 61

Fig 2.39 Accura 2350-1PSC Split-core Power Measuring Module New Installation ........................ 62

Fig 2.40 Accura 2350-1PSC Split-core Single Phase Power Measuring Module Cutout .................. 63

Fig 2.41 Accura 2350-1PSC Mounting Plate Cutout .................................................................... 65

Fig 2.42 Accura 2350-1PSC Split-core Power Measuring Module Remodeling Installation ............. 66

Fig 2.43 Accura 2350-1PSCSH Split-core Power Measuring Module New Installation.................... 67

Fig 2.44 Accura 2350-1PSCSH Split-core Power Measuring Module Cutout.................................. 68

Fig 2.45 Accura 2350-1PSCSH Split-core Power Measuring Module Cutout.................................. 69

Fig 2.46 Accura 2350-1PSCSH Split-core Power Measuring Module Remodeling Installation ......... 70

Fig 2.47 Accura 2300S Voltage Wiring ....................................................................................... 71

Fig 2.48 Three Phase 4 Wires, Direct Connection ........................................................................ 72

Fig 2.49 Three Phase 4 Wires, 3PT Connection ........................................................................... 72

Fig 2.50 Three Phase 3 Wires, Direct Connection ........................................................................ 73

Fig 2.51 Three Phase 3 Wires, 2PT Connection ........................................................................... 73

Fig 2.52 Single Phase 3 Wires, Direct Connection ....................................................................... 74

Fig 2.53 Single Phase 3 Wires, 2PT Connection .......................................................................... 74

Fig 2.54 Single Phase 2 Wires, Direct Connection ....................................................................... 75

Fig 2.55 Single Phase 2 Wires, 1PT Connection .......................................................................... 75

Fig 2.56 Accura 2300S Digital Input/Output Channel ................................................................. 76

Fig 2.57 Digital Input ................................................................................................................ 77

Fig 2.58 DC Relay Application ................................................................................................... 78

Fig 2.59 AC Relay Application .................................................................................................... 78

Fig 2.60 Three Phase 4 Wires/3 Wires, Direct Through-hole Connection ...................................... 81

Fig 2.61 Three Phase 4 Wires/3 wires, 3CT Through-hole Connection ......................................... 81

Fig 2.62 Three Phase 3 wires, 2CT Through-hole Connection ...................................................... 82

Fig 2.63 Single Phase LN[Line to Neutral] Through-hole Connection ............................................ 83

Contents

Accura 2300S/2350 User Guide

Page 16

Fig 2.64 Single Phase LL[Line to Line] Through-hole Connection .................................................. 83

Fig 2.65 Three Phase 4 Wires/3 Wires, Single hole 3 Module Through-hole Connection ............... 85

Fig 2.66 Three Phase 3 Wires, Single hole 2 Module Through-hole Connection ........................... 85

Fig 2.67 Single Phase LN[Line to Neutral] Single hole Module Through-hole Connection .............. 86

Fig 2.68 Single Phase LL[Line to Line] Single hole Module Through-hole Connection .................... 86

Fig 2.69 Accura 2300S/2350 Combination Example of Communication ..................................... 87

Fig 2.70 Accura 2300S Ethernet Communication Port ................................................................. 89

Fig 2.71 Accura 2300S Ethernet Communication ........................................................................ 90

Fig 2.72 Accura 2300S RS485 Communication .......................................................................... 91

Fig 2.73 Accura 2300S RS485 Communication Connection ........................................................ 91

Fig 2.74 Accura 2300S Power Supply ......................................................................................... 92

Fig 4.1 Accura 2300S Front ..................................................................................................... 133

Fig 4.2 Display Mode .............................................................................................................. 134

Fig 4.3 Setup Mode ................................................................................................................. 135

Fig 4.4 Event Log Mode ........................................................................................................... 135

Fig 4.5 Accura 2300S Front Overview ...................................................................................... 136

Fig 4.6 Accura 2300S Temperature Sensor ............................................................................... 138

Fig 4.7 Accura 2350 Module ID Selection at Upper Part of LCD Screen ...................................... 139

Fig 4.8 Voltage/Current/Power/Energy Display Screen .............................................................. 141

Fig 4.9 Voltage/Current/Power/Energy for Each Phase Display Screen ....................................... 141

Fig 4.10 Line to Line Voltage Display Screen ............................................................................. 142

Fig 4.11 Line to Neutral Current Display Screen ........................................................................ 142

Fig 4.12 Power Display Screen ................................................................................................. 143

Fig 4.13 Demand Active Power Display Screen ......................................................................... 143

Fig 4.14 Net Energy Display Screen.......................................................................................... 144

Fig 4.15 Leakage Current Display Screen ................................................................................. 144

Fig 4.16 Ethernet Conncetion Display Screen ............................................................................ 145

Fig 4.17 Temperature around Accura 2300S Display Screen ...................................................... 146

Fig 4.18 Dip Event Configuration[Three Phase 3 Wires] ............................................................. 157

Fig 4.19 Dip Event Configuration[Three Phase 3 Wires] ............................................................. 157

Fig 4.20 Swell Event Configuration[Three phase 4 wires] ........................................................... 159

Fig 4.21 Swell Event Configuration[Three phase 3 wires] ........................................................... 159

Fig 4.22 Dip[Sag] Event Alarm Screen ...................................................................................... 187

Fig 4.23 Swell Event Alarm Screen ........................................................................................... 187

Fig 4.24 Event Log Number ..................................................................................................... 189

Fig 5.1 3PT, 3CT Connection, Wiring Mode = 3P4U (3P4W Connection) ................................... 205

Accura 2300S/2350 User Guide

Contents

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Fig 5.2 2PT, 3CT Connection, Wiring Mode = 3P3U (3P3W Connection) ................................... 206

Fig 5.3 2PT, 2CT Connection, Wiring Mode = 3P3U (3P3W Connection) ................................... 206

Fig 5.4 2PT, 2CT Connection, Wiring Mode = 1P3U (1P3W Connection) ................................... 208

Fig 5.5 1PT, 1CT Connection, Wiring Mode = 1P2U (1P2W Connection) ................................... 209

Fig 5.6 Vector Diagram for Vector Sum Apparent Power ............................................................ 211

Fig 5.7 Vector Diagram for Arithmetic Sum Apparent Power ...................................................... 212

Fig 5.8 Power Sign and Current Phase LEAD/LAG ..................................................................... 213

Fig 5.9 Demand Calculation .................................................................................................... 214

Fig 5.10 Prediction Demand Calculation .................................................................................. 214

Fig 5.11 Half-cycle Refreshed 1-cycle RMS Calculation .............................................................. 215

Fig 5.12 Voltage Dip[Sag] Detection ......................................................................................... 215

Fig 5.13 Symmetrical Components ........................................................................................... 216

Fig 5.14 Aggregation Process .................................................................................................. 217

Chapter 1 Introduction

Accura 2300S/2350 User Guide

Page 18

Chapter 1 Introduction

Overview

Energy Management Paradigm Shift from Main Load to Branch Load

Until now for stable power supply, energy management has been used for a long time on

orientation of mainly switchgear panels such as main feeder, ACB and VCB. however at the time of

both the sharp increase of energy cost and preparations for CO2 emission reduction policy,

demand of energy management on orientation of distribution panels which comprise incoming

feeder and the branch loads[or circuits] is increasingly growing in manufacturing plants, IDC center,

building and etc.

Limit of Application of the existing 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 only for Branch Load Management

Distribution panel digital power meter comprises both Apccura 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 RS485 communication and displays only measurements of 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.

0.2% Reading/IEC62053-22 Class 0.5S[Class 0.2S 1] Accuracy

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

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

factor to determine reliability of the energy management is measuring accuracy. Accura

2300S/2350 makes 0.2% high accuracy measurements for voltage and current, and conforms to

IEC62053-22 class 0.5S[Class 0.2S 1] for power and energy. This makes it possible to precisely

analyze and diagnose various problems with energy management and power facilities.

1 Split-core single phase single hole power measuring module, Accura 2350-1PSCSH-800A/630A/400A

conforms to IEC62053-22 Class 0.2S.

Accura 2300S/2350 User Guide

Chapter 1 Introduction

Page 19

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

Accura 2300S provides various power quality information such as Dip[Sag], Swell, harmonic information [up

to 63 harmonic], Crest factor, K factor, and unbalance. This makes it possible for energy management

supervisor to easily find the change of power quality in the power facility. Quality information conforms to

IEC61000-4-30.

Aggregation Interval Maximum/Minimum/Average Information

Accura 2300S provides the average value that corresponds to 0.5 second interval from the

measurement value per cycle unit. Based on 0.5 second interval average value, Accura 2300S

provides the maximum/minimum/average of 1 second, 5 seconds, 1 minute, 5 minutes, 1 hour and

6 hours intervals. This measurement interval that is longer than 0.5 second means the Aggregation

Interval.

Accura 2300S provides not only the measuring parameter information, but also statistic information

(maximum, minimum, average) of voltage, current and power by communication. This includes the

information of measuring parameter which often changes. So this makes it possible to accurate

trend-analyzing about voltage, current and power.

CE/UL Safety and Reliability

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

EN61326-2-1] and UL[UL61010-1, 2nd edition].

Safety Guarantee of Installation by Through-hole Structure

Accura 2350-3P[1P] three phase[single phase] power measuring module is structured with Through-

hole current sensing without any electrical contacts, which guarantees safety of electrical accident

and simplifies installation. TM-3P is three phase terminal for helping wiring.

Fig 1.1 Through-hole Structure

Chapter 1 Introduction

Accura 2300S/2350 User Guide

Page 20

All-in-one Installation with MCCB/ELB of Various Ratings

The installation of Accura 2350-3P[1P] three phase[single phase] power measuring module is

compatible with MCCB/ELB of various ratings in dimension.

Fig 1.2 Accura 2350-3P[1P] Compatibility with MCCB/ELB in Dimension

Split-core Structure Possible to Install on Live Wire[applied only to split-core power

measuring module]

Accura 2350-3PSC[1PSC, 1PSCSH] split-core three phase[single phase, single phase single hole]

power measuring module makes it possible to install without power interruption by split-core

structure.

Fig 1.3 Accura 2350-3PSC Split-core Three Phase Power Measuring Module

Installation

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ROOTECH Accura 2300S/2350 User guide

ROOTECH Accura 2300S/2350 User guide

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