ROOTECH ACCURA 3300E User guide

ACCURA 3300E

High Accuracy Digital Power Meter

Installed at multiple locations within a facility actually makes possible power

measurement

User Guide[English]

Revision 1.02 2017/09/20

Accura 3300E User Guide

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 3300E 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 3300E, hazardous voltages 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 secondary etc.].

 Do not access to terminal strips of the Accura 3300E after installation.

Warning

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

Notice

Accura 3300E User Guide

 Do not apply Accura 3300E to voltages and currents that exceed input ratings of PT and CT.

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.

In the absence of written agreement to the contrary, Rootech Inc. assumes no liability for Rootech

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

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

Accura EMeter, Accura 2300S/2350, Accura 2300S/2350-1P3FSC, Accura 2600/2750, Accura

3000, Accura 3300S/3300, Accura 3300E, Accura 3500S/3500, Accura 3550S/3550, 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.

Accura 3300E User Guide

Notice

Standard Compliance

Process Control Equipment

E324900

MSIP-REM-RTE-ACCURA 3300E

QMS-1347 KAB-QC-09

Warranty Information

Accura 3300E User Guide

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 required 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 applicable law,

then Rootech’s liability shall be limited to twice the amoun

t of the relevant purchased product.

Accura 3300E User Guide

Warranty Information

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

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

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.

Revision History

Accura 3300E User Guide

Revision History

The following versions of the Accura 3300E User Guide has been released.

Revision

Date

Description

Revision 1.00 2015. 12. 04 Initial draft

Revision 1.01 2016. 02. 20 Description of temperature is changed to the temperature of

Accura 3300E clearly.

Revision 1.02 2017. 09. 20 UL Certification code changed

Accura 3300E User Guide

Contents

Chapter 1 Introduction .................................................................................................................... 13

Overview ........................................................................................................................................ 13

Application ..................................................................................................................................... 14

Device Lineup ................................................................................................................................. 15

Features .................................................................................................................................. 15

Chapter 2 Installation ...................................................................................................................... 17

Environmental Conditions ............................................................................................................... 17

Before you begin ............................................................................................................................ 18

Meter Overview ....................................................................................................................... 18

Components ............................................................................................................................ 19

Dimension ............................................................................................................................... 19

Step 1: Mounting ............................................................................................................................ 20

Accura 3300E Panel Mounting .................................................................................................. 20

Step 2: Voltage/Current Wiring ....................................................................................................... 21

Step 3: Accura 3300E External Communication ............................................................................... 29

RS-485 Communication ........................................................................................................... 29

Step 4: Accura 3300E Power Supply/Ground ................................................................................... 31

Power Supply ........................................................................................................................... 31

Ground Terminal ..................................................................................................................... 31

Chapter 3 Operation/Setup ............................................................................................................. 33

LED ......................................................................................................................................... 33

Button Function ........................................................................................................................ 33

DISPLAY mode ................................................................................................................................ 37

Front View ............................................................................................................................... 37

Display Screen ......................................................................................................................... 39

Measurement Parameter Display Screen .................................................................................... 40

EVENT Log mode ............................................................................................................................ 44

SETUP mode .................................................................................................................................. 48

SETUP Menu ............................................................................................................................ 48

METER Setup ........................................................................................................................... 49

Event Setup .............................................................................................................................. 56

RS-485 Communication Setup .................................................................................................. 58

Reset Setup .............................................................................................................................. 60

DISPLAY Setup ......................................................................................................................... 62

Contents

Accura 3300E User Guide

Compulsory Configuration Step....................................................................................................... 64

Accura 3300E Voltage Wiring Connection, PT Rating Configuration ........................................... 64

Chapter 4 Measurement Description ................................................................................................. 66

General Measurement Parameter .................................................................................................... 66

Measurement Event Parameter ........................................................................................................ 68

Measurement for Voltage Connection .............................................................................................. 69

Three Phase 4 Wire Connection ................................................................................................ 69

Three Phase 3 Wire Connection ................................................................................................ 70

Single Phase 3 Wire ................................................................................................................. 72

Single Phase 2 Wire Connection ............................................................................................... 73

Phase Power Measurement .............................................................................................................. 74

Fundamental Calculation ......................................................................................................... 74

Harmonic Calculation .............................................................................................................. 74

Three Phase Total Power Measurement ............................................................................................. 75

Vector Sum .............................................................................................................................. 75

Arithmetic Sum ........................................................................................................................ 76

Power Factor[PF] Measurement ........................................................................................................ 77

LEAD/LAG of Current Phase ............................................................................................................ 77

Demand Measurement ................................................................................................................... 78

Demand .................................................................................................................................. 78

Prediction Demand .................................................................................................................. 78

Unbalance[NEMA MG1] ................................................................................................................. 79

Unbalance of Line-Neutral Voltage ........................................................................................... 79

Unbalance of Line-Line Voltage ................................................................................................ 79

Sequence Unbalance ...................................................................................................................... 79

Negative Sequence Unbalance Ratio......................................................................................... 80

Zero Sequence Unbalance Ratio ............................................................................................... 80

Aggregation ................................................................................................................................... 80

APPENDIX A Specification ................................................................................................................ 81

APPENDIX B Standard Compliance ................................................................................................... 82

APPENDIX C Accuracy/Reliability ...................................................................................................... 83

Accuracy ................................................................................................................................. 83

Reliability ................................................................................................................................. 84

APPENDIX D Ordering Information ................................................................................................... 85

INDEX............................................................................................................................................ 86

Accura 3300E User Guide

Contents

Figures

Fig 2.1 Accura 3300E Front ...................................................................................................... 18

Fig 2.2 Accura 3300E Side ....................................................................................................... 18

Fig 2.3 Accura 3300E Rear ...................................................................................................... 18

Fig 2.4 Accura 3300E Components .......................................................................................... 19

Fig 2.5 Accura 3300E Front Dimension ..................................................................................... 19

Fig 2.6 Accura 3300E Side Dimension ...................................................................................... 19

Fig 2.7 Accura 3300E Rear Dimension ...................................................................................... 19

Fig 2.8 Accura 3300E Mounting[ANSI 4”] ................................................................................. 20

Fig 2.9 Accura 3300E Mounting[DIN96] ................................................................................... 20

Fig 2.10 Voltage/Current Wiring ............................................................................................... 21

Fig 2.11 3 Phase 4 Wire 3PT, 3CT Wiring, Wiring Mode[Conn] = 3P4U ..................................... 23

Fig 2.12 3 Phase 3 Wire 2PT 3CT Wiring, Wiring Mode[Conn] = 3P3U...................................... 24

Fig 2.13 3 Phase 3 Wire 2PT, 2CT wiring, Wiring Mode[Conn] = 3P3U ...................................... 24

Fig 2.14 1 Phase 3 Wire 2PT 2CT Wiring, Wiring Mode[Conn] = 1P3U...................................... 25

Fig 2.15 1 Phase 2 Wire 1PT 1CT Wiring, Wiring Mode[Conn] = 1P2U...................................... 25

Fig 2.16 3 Phase 4 Wire Direct 3CT Wiring, Wiring Mode[Conn] =3P4U ................................... 26

Fig 2.17 3 Phase 3 Wire Voltage Direct 3CT Wiring, Wiring Mode[Conn]=3P3U ........................ 26

Fig 2.18 3 Phase 3 Wire Voltage Direct 2CT Wiring, Wiring Mode[Conn]=3P3U ........................ 27

Fig 2.19 1 Phase 3 Wire Voltage Direct 2CT Wiring, Wiring Mode[Conn]=1P3U ........................ 27

Fig 2.20 1 Phase 2 Wire Voltage Direct 1CT Wiring, Wiring Mode[Conn]=1P2U ........................ 28

Fig 2.21 Accura 3300E RS-485 Communication ....................................................................... 29

Fig 2.22 Accura 3300E RS-485 Communication Connection ..................................................... 29

Fig 2.23 Accura 3300E Power Supply ....................................................................................... 31

Fig 3.1 Accura 3300E Front Composition .................................................................................. 33

Fig 3.2 Screen Example of DISPLAY mode ................................................................................. 34

Fig 3.3 Screen Example of SETUP mode .................................................................................... 34

Fig 3.4 Screen Example of EVENT Log mode ............................................................................. 35

Fig 3.5 Accura 3300E Front Overview ....................................................................................... 37

Fig 3.6 First Screen of DISPLAY mode ........................................................................................ 40

Fig 3.7 Voltage/Current Display Screen for Each Phase .............................................................. 40

Fig 3.8 Line to Line Voltage Display Screen ............................................................................... 41

Fig 3.9 Current Display Screen ................................................................................................. 41

Fig 3.10 Power Display Screen .................................................................................................. 42

Fig 3.11 Demand Active Power Screen ...................................................................................... 42

Contents

Accura 3300E User Guide

Fig 3.12 NET Energy Display Screen in Energy Display .............................................................. 43

Fig 3.13 Temperature Display Screen in ETC Display ................................................................. 43

Fig 3.14 Event Log Number Example ........................................................................................ 45

Fig 3.15 3 Phase 4 Wire connection: configure “3P4U” and PT primary VAB, Secondary V12 ......... 49

Fig 3.16 3P3W connection: configure “3P3U” and PT primary VAB, Secondary V12 ....................... 50

Fig 3.17 1P3W connection: configure “3P3U” and PT primary VL12, Secondary V13 ...................... 50

Fig 3.18 1P2W connection: configure “1P2U” and PT primary VL12, Secondary V1N...................... 50

Fig 4.1 3PT, 3CT Connection, Wiring Mode = 3P4U (3P4W Connection) .................................... 69

Fig 4.2 2PT, 3CT Connection, Wiring Mode = 3P3U (3P3W Connection) .................................... 70

Fig 4.3 2PT, 2CT Connection, Wiring Mode = 3P3U (3P3W Connection) .................................... 70

Fig 4.4 2PT, 2CT Connection, Wiring Mode = 1P3U (1P3W Connection) .................................... 72

Fig 4.5 1PT, 1CT Connection, Wiring Mode = 1P2U (1P2W Connection) .................................... 73

Fig 4.6 Vector Diagram for Vector Sum Apparent Power ............................................................. 75

Fig 4.7 Vector Diagram for Arithmetic Sum Apparent Power ....................................................... 76

Fig 4.8 Power Sign and Current Phase LEAD/LAG ..................................................................... 77

Fig 4.9 Demand Calculation .................................................................................................... 78

Fig 4.10 Prediction demand calculation .................................................................................... 78

Fig 4.11 Symmetrical Components ........................................................................................... 79

Fig 4.12 Aggregation Process ................................................................................................... 80

Accura 3300E User Guide

Chapter 1 Introduction

Overview

Real-time Power Management of Switchgear Panel

Due to the problems of power supply, power facility, and load, various power quality problems are

often generated in a moment at switchgear panel. Finding the cause of problems by the real-time

power analysis, energy management supervisor has to make proper preventive or post steps.

±0.2% Reading/IEC62053-22 Class 0.5S Accuracy

Recently enterprise energy management system establishment is required for effective energy use

and preventive management to prepare CO2 emission management in plant, factory and building.

The key factor to determine reliability of energy management is the degree of measuring accuracy

of power meter. Accura 3300E performs high accuracy measurements of ±0.2% of reading for

voltage and 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.

True RMS Measurement

Accura 3300E performs RMS measurement through 64-sampling/cycle for severe non-linear loads.

Power Quality

Accura 3300E provides various power quality informations such as harmonic information[up to 31st

harmonics], crest factor, K-factor, unbalance ratio, etc. This makes it possible for energy

management supervisor to easily find the power quality change in the power facility.

Maximum/Minimum/Average Information during aggregation interval

Accura 3300E calculates the average value that corresponds to 0.2 second interval from the

measurement value by cycle unit. Based on 0.2 second interval average value, Accura 3300E

provides the maximum/minimum/average of voltage, current and power of the one selected

interval among 1 second, 5 seconds, and 1 minute intervals by communication. This measurement

interval that is longer than 0.2 second is called “aggregation interval”. As this includes the

measurement parameter which changes in a moment, this makes it possible to do accurate trend

analysis for voltage, current and power quality.

Chapter 1 Introduction

Accura 3300E User Guide

CE, UL, KC Safety and Reliability

The structure[framework, circuit, fire] of Accura 3300E conforms to standard, CE[EN61326-1,

EN61326-2-1], UL[EN61010-1], KC[KN22, KN24].

Application

High-Reliability Energy Management

Energy management is specified into various application services such as power quality

management, cost management, demand power management, power facility replacement, and

energy plan connecting with upper level program. The most important thing that decides the data

reliability of energy management is the accuracy degree of digital meter. As Accura 3300E

performs high-accuracy measurement of ±0.2% of reading for voltage and current, and

power/energy conforms to the compliance IEC62053-22 Class 0.5S, it enables construction of

accurate energy management system.

Preventive/Post Measures for Power Facility Operation Management

Accura 3300E provides various functions like energy usage management, power facility

management, power quality management and high-efficiency facility analysis management. This

enables energy management supervisor to make proper preventive or post measures by suggesting

accurate analytical standard of judgement for power usage and quality.

Enterprise Energy Management

Accura 3300E mounted on various switchgear panels in the power facilities and Accura

2300S[2300]/2350 mounted on branch loads inside the distribution panel provide the power

quality information which is essential for energy management. This realizes the true enterprise

energy management system by total-measuring the power receiving-based switchgear panels and

power usage-based distribution panels.

Accura 3300E User Guide

Chapter 1 Introduction

Device Lineup

Features

Accura 3300E Digital Power Meter

Accura 3300E performs ±0.2% of reading accuracy for voltage and current measurement, and

power/energy conforms to IEC62053-22 Class 0.5S. Also it provides various information such as

harmonic information[up to 31st harmonics], Crest factor, K-factor, unbalance, etc. which are

essential for power quality management of switchgear panels.

Accura 3300E

Function

Measurement

Display

LCD display of realtime measurement data

Analog bar-graph display corresponding to the

measurement amount

General

Sampling/cycle 64

Operating frequency 50/60Hz

True RMS measurement Voltage/current: ±0.2% of

reading accuracy

Measurement frequency range 42 - 69Hz

Demand, peak demand, prediction demand 1, 2

Maximum, minimum

Maximum 2, minimum2, average2 during

aggregation interval 3

Energy

kWh received, kWh delivered IEC62053-22 Class 0.5S

kWh net[kWh received - kWh delivered] IEC62053-22 Class 0.5S

kWh sum[kWh received + kWh delivered] IEC62053-22 Class 0.5S

Power Quality

Voltage/current harmonic information Up to 31st harmonics

Voltage/Current THD4, current TDD5 Up to 31st harmonics

Crest factor 6, 2, K-factor 7, 2

Unbalance[voltage, current] 2 IEC61000-4-30, NEMA MG1

Vector diagram 2

Harmonic analysis graph[voltage, current] 2

Chapter 1 Introduction

Accura 3300E User Guide

Oscilloscope 2

Demand trend 2

Event

Fuse Fail, Phase Open, Blackout detection

Over-temperature detection

Number of Event Log Up to 50

Temperature

Temperature of Accura 3300E 8 1EA

Communication

RS-485[1,200 - 115,200bps, Modbus RTU protocol] 1 port[Ta, Tb]

General

UL certification EN61010-1

CE certification EN61326-1, EN61326-2-1

KC certification KN22, KN24

AC Power AC 85 - 265V, 50/60Hz

DC Power DC 100 - 300V

1 Calculates the prediction demand power supposing that the power maintains as the thermal value of present

point in the demand subinterval for remaining demand subinterval.

2 Data can be achieved only by the communication[not displayed on LCD].

3 Accura 3300E provides statistic data of maximum, minimum, average value for voltage, current and

power by communication. As this includes the data of measurement parameter which changes in a moment,

this performs accurate trend-analysis for voltage, current and power quality.

4 THD[Total harmonic distortion]. Voltage THD:  







, Current THD:  









5 TDD[Total demand distortion]. Current TDD:  









where

L

I

can be selected among rating current[default] and peak demand current [only by communication].

6 Crest factor: 

 , 7 K-factor: ( )













8 It is not for fire watching, but for reference only[A temperature sensor is positioned on the side of Accura 3300E].

Accura 3300E User Guide

Chapter 2 Installation

Environmental Conditions

Accura 3300E should be mounted in a dry, dirt free location away from heat sources and very high

electric fields. To operate properly and effectively, environmental conditions should be considered

as below.

Item

Range

Position Indoor use

Operating temperature -20 to 70°C[-4℉ to 158℉]

Safety temperature 1 -20 to 65°C[-4℉ to 149℉]

Storage temperature -40 to 85°C[-40℉ to 185℉]

Operating humidity 5% to 95% non-condensing

1 Conforms to EN61010-1

Warning

-

The meter should be mounted in a distribution panel or similar enclosure to ensure the

terminal strips on the meter are not user-accessible after mounting.

- Mount the meter in a dry location free from dirt and corrosive vapors. Once mounted,

cleaning of the device is not required and recommend blocking the device not to be directly

exposed at external environment.

Chapter 2 Installation

Accura 3300E User Guide

Before you begin

Before installing the Accura 3300E, observe the instructions and safety precautions presented in

this guide.

Caution

Power up after voltage and current wiring is completed.

Meter Overview

Fig 2.1 Accura 3300E Front Fig 2.2 Accura 3300E Side

Fig 2.3 Accura 3300E Rear

Accura 3300E User Guide

Chapter 2 Installation

Components

Fig 2.4 Accura 3300E Components

Accura 3300E Two fixing nuts, bolts Rear protection

cover

Short bar Connector

Dimension

Fig 2.5 Accura 3300E Front Dimension Fig 2.6 Accura 3300E Side Dimension

Fig 2.7 Accura 3300E Rear Dimension

Dimension

Device

Model

Dimension[mm]

Digital Power Meter Accura 3300E 126.3W x 114.0H x 77.4D

Chapter 2 Installation

Accura 3300E User Guide

Step 1: Mounting

Accura 3300E Panel Mounting

Accura 3300E is mounted on front of distribution panel.

① Place the meter into the cutout. [ANSI 4”, DIN96 supported]

② Mount the connector to right side of Accura 3300E.

③ Fix the meter to panel using fixing nuts. Especially in case of conforming to DIN96

compliance, through-hole to the panel is not required and using washers with fixing nuts,

the meter can be much easily mounted.

Fig 2.8 Accura 3300E Mounting[ANSI 4”] Fig 2.9 Accura 3300E Mounting[DIN96]

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ROOTECH ACCURA 3300E User guide

ROOTECH ACCURA 3300E User guide

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