ROOTECH Accura 3300 User guide

ACCURA 3300

High Accuracy Digital Power Meter

With full features of power measurements

Becomes a necessary solution to you.

User Guide[English]

Rev 1.7 2018/01/02

Page 2

Page 3

Notice

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

p

ersons, 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.

Electrical Symbols

Indicates alternative voltage or current.

Indicates direct voltage or current.

Installation Considerations

Installation and operation of Accura 3300 meter 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 3300 meter, hazardous voltages are present on

its terminal strips.

 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 3300 meter after installation.

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Warning

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

 Do not apply Accura 3300 to voltages and currents that exceed Input ratings of PT and

CT.

About Manual

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.

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.

Limitation of Liability

Where applicable law allows and does not prohibit or restrict such limitation, the Rootech, Inc’s

liability for anything relating to this product shall be limited to the price paid for the product.

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Warranty

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.

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.

Limitation of Warranty

The Warranty does not apply to uninterrupted or error-free operation of the Product or cover

normal wear and tear of the product or costs caused by the removal, installation, or

troubleshooting of the customer's electrical systems.

The warranty claims for defects caused by any of the following factors are not covered.

 Improper use(alteration, accident, misuse, abuse) or Failure to act in accordance with

installation, operation or maintenance instructions

 Unauthorized modifications, changes or attempted repairs

 Failure to comply with applicable safety standards & regulations

 Damages when transporting or storing

 Damages by force majeure, examples are(not necessarily limited): fire, flood, earthquakes,

storm damage, overvoltage & lightning

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 If the original identify markings(trade-mark, serial number, etc) have been defaced, altered,

or removed

Rootech shall not be liable for any other claim 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 lies 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.

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Standard Compliance

CE Approved

EN61326 and IEC61010

Process Control Equipment

E324900

QMS-1347 KAB-QC-09

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Revision History

The following versions of the Accura 3300 User’s Guide have been are released.

Revision #

Revision date

Description

Revision 1.0 2006. 06. 30 Initial draft

Revision 1.1 2007. 07. 13 Mounting modified

Revision 1.2 2012. 05. 21 Voltage input range modified

Revision 1.3 2015. 05. 12 Standard compliance updated

Revision 1.4 2016. 09. 05 Voltage wiring diagram updated

Revision 1.5 2017. 08. 07 IrDA deleted

Revision 1.6 2017. 08. 20 UL Certification code changed

Revision 1.7 2018. 01. 02 Notice, Warranty changed

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Contents

Chapter 1 Introduction ................................................................................................................................... 12

Overview ......................................................................................................................................................................................... 12

Power Measurements ..................................................................................................................................................... 12

Accuracy................................................................................................................................................................................ 12

Power Quality ..................................................................................................................................................................... 12

CE/UL Safety and Reliability ........................................................................................................................................ 12

Features ........................................................................................................................................................................................... 13

Measurement ..................................................................................................................................................................... 13

Power Quality ..................................................................................................................................................................... 13

Communication ................................................................................................................................................................. 13

Power Supply...................................................................................................................................................................... 13

Applications ................................................................................................................................................................................... 14

True RMS Measurements robust to harmonics ................................................................................................. 14

Power Quality Analysis .................................................................................................................................................. 14

Compatibility with Analog Meters ........................................................................................................................... 14

High Reliability Energy Management ..................................................................................................................... 14

Parameters ..................................................................................................................................................................................... 15

Chapter 2 Mounting ..................................................................................................................................... 16

Environmental Conditions ............................................................................................................................................ 16

Enclosure Considerations ............................................................................................................................................. 16

Before You Begin ........................................................................................................................................................................ 17

Meter Overview................................................................................................................................................................. 17

Meter Dimensions ............................................................................................................................................................ 18

Step 1: Mounting ..................................................................................................................................................................... 19

Sequence .............................................................................................................................................................................. 19

Step 2: Voltage and Current Inputs ................................................................................................................................ 20

Voltage Input ...................................................................................................................................................................... 20

Current Input ...................................................................................................................................................................... 21

Wiring Diagram Using External PTs ........................................................................................................................ 22

Direct Diagram Using No PTs .................................................................................................................................... 25

Step 3: Wire the RS485 Communication ........................................................................................................................ 28

Step 4: Wire the Power Supply and Ground Terminal ............................................................................................. 29

Power Supply...................................................................................................................................................................... 29

Ground Terminal ............................................................................................................................................................... 29

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Step 5: Add a Cover/Power Up the Meter .................................................................................................................. 30

Add a Cover ........................................................................................................................................................................ 30

Power Up the Meter ....................................................................................................................................................... 30

Chapter 3 Meter Operation/Setup ............................................................................................................. 31

Display Mode ............................................................................................................................................................................... 31

Setup Mode .................................................................................................................................................................................. 35

Reset Mode ................................................................................................................................................................................... 37

System Mode ................................................................................................................................................................................ 38

Reactive Calculation Method...................................................................................................................................... 40

APPENDIX A Standard Specification.......................................................................................................... 42

APPENDIX B Standard Compliance ............................................................................................................ 43

APPENDIX C Test Report ............................................................................................................................. 44

Measuring Test ............................................................................................................................................................................. 44

Reliability Test ............................................................................................................................................................................... 45

INDEX ................................................................................................................................................................. 46

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Figures

Fig 1.1 Front Side ............................................................................................................................................................. 17

Fig 1.2 Rear Side ............................................................................................................................................................... 17

Fig 1.3 Front View ............................................................................................................................................................ 18

Fig 1.4 Rear View.............................................................................................................................................................. 18

Fig 1.5 Side View .............................................................................................................................................................. 18

Fig 1.6 ANSI 4” .................................................................................................................................................................. 19

Fig 1.7 DIN96 ..................................................................................................................................................................... 19

Fig 1.8 Voltage and Current Connector ................................................................................................................ 20

Fig 1.9 Single Phase 2 Wires, Wiring Mode = 1P2U ...................................................................................... 22

Fig 1.10 Three Phase 3 Wire Open Delta Using 2CTs, Wiring Mode = 3P3O ................................... 23

Fig 1.11 Three Phase 3 Wire Open Delta Using 3CTs, Wiring Mode = 3P3O ................................... 23

Fig 1.12 Three Phase 4 Wires Using 3 PTs and 3 CTs, Wiring Mode = 3P4U ................................... 24

Fig 1.13 Single Phase 2 Wire Direct , Wiring Mode = 1P2U ..................................................................... 25

Fig 1.14 Single Phase 3 Wire Direct Using 2 CTs, Wiring Mode = 1P3U ............................................ 26

Fig 1.15 Three Phase 3 Wire Open Delta Direct, Wiring Mode = 3P3O .............................................. 26

Fig 1.16 Three Phase 3 Wire Open Delta Direct Using 3 CTs, Wiring Mode = 3P3O ................... 27

Fig 1.17 Three Phase 4 Wire Direct Using 3 CTs, Wiring Mode = 3P4U ............................................. 27

Fig 1.18 Communication Wiring ............................................................................................................................... 28

Fig 1.19 Wiring of Power Supply and Ground Terminal ............................................................................... 29

Fig 1.20 Cover .................................................................................................................................................................... 30

Fig 2.1 Measurement Groups ..................................................................................................................................... 31

Fig 2.2 P, Q[according to general calculation] ................................................................................................... 40

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Chapter 1 Introduction

Overview

Power Measurements

Accura 3300 is a high accuracy digital power meter, suited to power measurements. The device is

applied to a variety of applications, electrical facilities, intelligent building system, factory,

generator and etc, making measurements of voltage, current, power, frequency, power factor, and

demand.

Accuracy

The measuring accuracy is the most important criterion to evaluate the reliability of energy

management system. Actually low accuracy makes it hard for customers to precisely manage

energy, causing inequality of energy between incoming feeder and sum of load sides. Accura

3300 makes ±0.2% high accuracy measurements for voltage and current, and conforms to

IEC62053-22 class 0.5S for power and energy. This makes it possible to solve the problem with

energy inequality.

Power Quality

Accura 3300 provides the information of power qualities, such as voltage/current THD, harmonic

analysis, and k factor.

CE/UL Safety and Reliability

The structure- framework, circuit, fire - of Accura 3300 conforms to safety standard,

CE[IEC61010], UL[UL61010-2, 2nd edition]. Particularly the device provides pass-through busbar,

allowing CT leads to be terminated on the device. This eliminates any possible point of failure at

the device.

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Features

Measurement

 64 Sampling/Cycle True RMS

 IEC 62053-22 Class 0.5S

 50, 60Hz

 Phase voltage, line to line voltage, current

 Power, energy, power factor, frequency

 Fundamental component, True RMS of current

 4 Quadrant Power

 Demand, peak demand, Prediction demand

 Maximum, Minimum



Power Quality

 Voltage/current THD

 Harmonic Analysis†

 K factor†

†It is available only on RS485 communication.

Communication

 RS485 Port[rear]

Modbus RTU Protocol

Baudrate: 1,200 ~ 57,600bps

Power Supply

 AC 85 ~ 265V, 50/60Hz

 DC 100 ~ 300V

 Burden: 10VA

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Applications

True RMS Measurements robust to harmonics

Most of energy environments consist of nonlinear loads, such as industrial load, rectifier, power

electronic device, electric furnace and etc. this causes fatal distortion of voltage and current

waveforms. Accura 3300 makes high accuracy True RMS measurements for voltage and current

distorted with harmonics.

Power Quality Analysis

Accura 3300 provides k factor, analysis of voltage and current up to 31st harmonic, and realtime

waveform of voltage and current.

Compatibility with Analog Meters

Accura 3300 mounts directly in ANSI C39.1[4” Round] or DIN 96. this is perfect for new

installations and for existing panels. In new installations, simply use existing DIN or ANSI punches.

For existing panels, pull out old analog meters and fit the device in its cutout.

High Reliability Energy Management

The most important point to evaluate the overall data reliability of energy management is the

accuracy of meters. Accura 3300 makes ±0.2% high accuracy measurements for voltage and

current, and conforms to IEC62053-22 class 0.5S for power and energy. Energy management

gives customers various services, monitoring, cost curtailment, demand, energy planning, and etc.

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Parameters

Realtime

1

Average

2

Total

3

Maximum

4

Minimum

5

Prediction

6

Phase voltage ■ ■ ■ ■

Line to line voltage ■ ■ ■ ■

Current ■ ■ ■

Power Active ■ ■ ■

Reactive ■ ■ ■

Apparent ■ ■ ■

Energy Active ■

Reactive ■

Apparent ■

Frequency ■

Power factor ■ ■

THD Voltage ■

Current ■

Demand Power ■ ■ ■

Current ■ ■ ■

1Instaneous measuring. 2Average of three phase parameters. 3Total sum of three phase parameters.

4If realtime measurements exceed maximums, the maximums will be updated, the measurements being

ignored within 10msecs after power up.

5If realtime measurements is less than minimums, the minimums will be updated, the measurements being

ignored within 10msecs after power up.

6 Prediction demand is calculated based on realtime energy.

Note

The Maximums and minimums will not be updated with no power-up.

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Chapter 2 Mounting

Environmental Conditions

The Accura 3300 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 range

within the following guidelines

Items Acceptable Range

Position Indoor use

Operating Temp -20 ~ 70°C[-4℉ ~ 158℉]

Storage Temp -40 ~ 85°C[-40℉ ~ 185℉]

Operating Humidity 5 ~ 95% Non condensing

Enclosure Considerations

The enclosure the Accura 3300 is mounted in (typically a switchgear cabinet) should protect the

device from atmospheric contaminants such as oil, moisture, dust, and corrosive vapors, or other

harmful airborne substances. The mounting enclosure should be positioned such that the doors

may be opened fully for easy access to the Accura 3300 wiring and related components to allow

for convenient troubleshooting.

Warning

T

he meter should be installed in a switchgear cabinet or similar enclosure to ensure the terminal

strips on the meter base are not user accessible after installation.

Mount the meter in a dry location free from dirt and corrosive vapors. Once installed, no cleaning

of the device is necessary.

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Before You Begin

Before installing the meter, observe the instructions in this guide and read the safety precautions

presented on the “Installation Considerations” page.

Danger

Power up after the voltage and current wiring is completed.

Meter Overview

Fig 1.1 Front Side Fig 1.2 Rear Side

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Meter Dimensions

Fig 1.3 Front View Fig 1.4 Rear View

Fig 1.5 Side View

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Step 1: Mounting

Sequence

1. Remove connector on the bottom of the meter.

2. fit the meter into cutout[ANSI 4” or DIN96]

Fig 1.6 ANSI 4” Fig 1.7 DIN96

Note

The meter is mounted on switchgear boards (metal cabinet) in electrical facilities.

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Step 2: Voltage and Current Inputs

Fig 1.8 Voltage and Current Connector

Voltage Input

Pin name V1, V2, V3, Vn

Connector Terminal block

Wire 2.1 to 3.5 mm2[ 14 to 12 AWG]

Rating1 0 ~ 600V 3 ~ L-L[Line to line], 0 ~ 457V 3 ~ L-N[Line to neutral]

Burden 0.02VA/phase @220V

Impedance 3MΩ/phase

Compliance Pollution degree 2, Installation Category Ⅲ

Warning

In three phase 3 wire open delta direct, line to line voltage should not exceed 457V because the

voltage is applied to the inputs of phase voltage.

PT[Potential Transformer]

PTs are required for all systems with voltage levels greater than these above. The meter inputs can

be used with PTs that have secondaries rated between AC 0V and 457V. PTs should comply with

IEC61010-1 2nd Edition, Pollution Degree 2, Overvoltage Category Ⅲ.

Warning

In case where PTs are required, the secondaries should be fused.

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ROOTECH Accura 3300 User guide

ROOTECH Accura 3300 User guide

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