ROOTECH ACCURA 3300E User manual

ACCURA 3300E
High Accuracy Digital Power Meter
Installed at multiple locations within a facility actually makes possible power
measurement
User Guide[English]
Revision 1.00 2015/12/04

Accura 3300E User Guide
Notice
©2015 Rootech Inc. All Rights Reserved
Page 3
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
Page 4
ⓒ2015 Rootech Inc. All Rights Reserved
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 2500, Accura 3300E, 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.

Accura 3300E User Guide
Notice
ⓒ2015 Rootech Inc. All Rights Reserved
Page 5
Standard Compliance
MEASURING EQUIPMENT
35DX
E258934
MSIP-REM-RTE-ACCURA 3300E
QMS-1347
KAB-QC-09

Warranty Information
Accura 3300E User Guide
Page 6
ⓒ2015 Rootech Inc. All Rights Reserved
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 amount of the relevant purchased product.

Accura 3300E User Guide
Warranty Information
ⓒ2015 Rootech Inc. All Rights Reserved
Page 7
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
Page 8
ⓒ2015 Rootech Inc. All Rights Reserved
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

Accura 3300E User Guide
Contents
ⓒ2015 Rootech Inc. All Rights Reserved
Page 9
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
Page 10
ⓒ2015 Rootech Inc. All Rights Reserved
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
ⓒ2015 Rootech Inc. All Rights Reserved
Page 11
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
Page 12
ⓒ2015 Rootech Inc. All Rights Reserved
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
ⓒ2015 Rootech Inc. All Rights Reserved
Page 13
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 CO2emission 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
Page 14
ⓒ2015 Rootech Inc. All Rights Reserved
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
ⓒ2015 Rootech Inc. All Rights Reserved
Page 15
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
Page 16
ⓒ2015 Rootech Inc. All Rights Reserved
Oscilloscope 2
Demand trend 2
Event
Fuse Fail, Phase Open, Blackout detection
Over-temperature detection
Number of Event Log
Up to 50
Temperature
Temperature in the distribution panel8
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
1Calculates the prediction demand power supposing that the power maintains as the thermal value of present
point in the demand subinterval for remaining demand subinterval.
2Data can be achieved only by the communication[not displayed on LCD].
3Accura 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.
4THD[Total harmonic distortion]. Voltage THD:  



, Current THD:  




5TDD[Total demand distortion]. Current TDD:  




where
L
I
can be selected among rating current[default] and peak demand current [only by communication].
6Crest factor: 
, 7 K-factor: 󰇛󰇜






8It 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
ⓒ2015 Rootech Inc. All Rights Reserved
Page 17
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
1Conforms 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
Page 18
ⓒ2015 Rootech Inc. All Rights Reserved
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
ⓒ2015 Rootech Inc. All Rights Reserved
Page 19
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
Page 20
ⓒ2015 Rootech Inc. All Rights Reserved
Step 1: Mounting
Accura 3300E Panel Mounting
Accura 3300E is mounted on front of distribution panel.
①Place the meter into the cutout. [ANSI 4”, DIN96 supported]
②Mount the connector to right side of Accura 3300E.
③Fix 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]