ROOTECH Accura 3000 User guide

ymbols

Caution

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

to persons if proper precautions are not followed.

Caution

Alerts users of the presence of hazards which can cause injury to persons, property

damage or damage to the device if proper precautions are not followed.

Note

Indicates major instructions for the installation, operation, and maintenance of the

product.

Indicates alternative voltage or current.

Indicates direct voltage or current.

Installation Considerations

The installation, operation, and maintenance of the product should be performed only by qualified,

competent personnel that have received appropriate training for high voltage and current devices.

◼ During normal operation of the product, hazardous voltages are present on the terminals that

connect PT/CT, digital inputs, power, and external I/O circuits. The PT/CT secondary can produce

lethal voltage or current caused by the energy of the primary.

◼ Standard safety precautions should be followed during the installation and maintenance of the

product, including removing PT fuses and shorting CT secondaries.

◼ Install the product in enclosures or a similar cabinet to prevent access to the terminal strips of

the product after wiring.

\

Page 2

Notice

Symbols

Caution

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

precautions are not followed.

Caution

Alerts users of the presence of hazards which can cause injury to persons, property damage or

damage to the device if proper precautions are not followed.

Note

Indicates major instructions for the installation, operation, and maintenance of the product.

Indicates direct voltage or current.

Installation Considerations

The installation, operation, and maintenance of the product should be performed only by qualified,

competent personnel that have received appropriate training for high voltage and current devices.

Caution

If hazardous voltages are mishandled while installing and operating the product in the field, it can cause

serious injury or death.

◼ During normal operation of the product, hazardous voltages are present on the terminals that

connect PTs/CTs, digital inputs, power, and external I/O circuits. The PT/CT secondary can

produce lethal voltage or current caused by the energy of the primary.

◼ Standard safety precautions should be followed during the installation and maintenance of the

product, including removing PT fuses and shorting CT secondaries.

◼ Install the product in enclosures or a similar cabinet to prevent access to the terminal strips of

the product after wiring.

Page 3

Caution

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

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

product.

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

damage to the product.

◼ Connect the chassis ground terminal of the product to the earth ground to protect the device

from noise and surge. Failure to properly connect the chassis ground will void the warranty of the

product.

About the Manual

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

Guide without prior notice. We recommend that customers should obtain the latest information on

product specifications and the manual before making orders.

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

customer’s system design, or infringement of patents or copyrights induced by third parties arising

from the use of the products described herein.

We endeavor to provide accurate information in the document. However, we are not responsible

for any errors which may appear here and reserves the right to make changes without prior notice.

Limitation of Liability

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

for this product shall be limited to the amount actually paid by customers for the product.

Page 4

Warranty

Rootech Inc. provides warrants for two years from the product receipt date only to the original

purchaser of the products and software that are sold or licensed by the company.

To obtain warranty service, the purchased products should be free from serious defects in material

and workmanship.

The software is provided in an up-to-date version, thus we do not offer any warranty for the

software product.

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

should immediately contact Rootech headquarters. Upon receiving claims, Rootech will check out

the product either at where the purchaser is or at the company after receiving the product from the

customer, who is responsible for the cost of shipping the product. After inspecting the product, we

will provide repair or replacement services for the product.

Rootech will decide at its discretion whether to repair or replace it or give a refund for the product

for when the warranty period for the product expired or issues related to the product are not

applicable for warranty terms and conditions.

Limitation of Warranty

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

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

troubleshooting of the customer's electrical systems.

Defects caused by any of the following factors are not covered under the warranty.

◼ Improper use(alteration, accident, misuse, abuse) or failure to act in accordance with

installation, operation or maintenance instructions

◼ Unauthorized modifications, changes or repair attempts

◼ Failure to comply with applicable safety standards & regulations

◼ Damages coming from when transporting or storing the product

◼ Damages caused by the force majeure event, including fire, flood, earthquakes, storm

damage, overvoltage & lightning

◼ If the original identification marks(trade-mark, serial number, etc.) have been defaced, altered,

Page 5

or removed

Rootech shall not be liable for any other claims except the claims made by customers, including the

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

incurred related to the purchased product when the above warranty terms and conditions are not

fulfilled.

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

shall be deemed to be a suggestion. The original purchaser is responsible for determining the

feasibility of such suggestions and should conduct tests to prove their feasibility.

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

documentation. The original purchaser should acknowledge that 100% up time is not realizable

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

such defects and failures may cause inaccuracies or malfunctions.

No agency, corporate entity, or employee of Rootech or other companies has authority to amend,

modify or extend the terms and conditions of this warranty in any way without express written

authorization from Rootech, Inc.

Page 6

Standards Compliance

Process Control Equipment

E324900

KCC-RTM-RTE-ACCURA3000

Page 7

Revision History

The following versions of the Accura 3000 User Guide have been released.

Revision #

Revision date

Description

Revision 1.0

2006. 06. 30

Initial release

Revision 1.1

2007. 07. 13

Mounting method modified

Revision 1.2

2009. 11. 26

Voltage input range modified

Revision 1.3

2012. 05. 22

Address modified

Revision 1.5

2015. 03. 02

Demand display added

Revision 1.6

2015. 06. 12

Standard Logo Image modified

Revision 1.7

2016. 01. 12

IrDA deleted

Revision 1.8

2016. 09. 05

Voltage wiring diagram updated

Revision 1.9

2016. 11. 11

Measurement parameters corrected and demand added

Revision 2.0

2017. 09. 20

Renamed Accura 2500 to Accura 3000

UL Certification code changed

Revision 2.1

2018.01.02

Notice, Warranty changed

Revision 2.2

2022.04.14

Setup items, screen images and wiring diagrams changed

Standard logo updated

Page 8

Contents

Notice.............................................................................................................................................. 1

Symbols ........................................................................................................................................... 2

Installation Considerations ................................................................................................................ 2

About the Manual ............................................................................................................................. 3

Limitation of Liability ......................................................................................................................... 3

Chapter 1 Introduction .................................................................................................................... 11

Overview ........................................................................................................................................ 11

Integrated Measurements of Various Electrical Parameters.......................................................... 11

Accurate Measurements ........................................................................................................... 11

Proven Safety and Reliability with CE/UL Certifications ............................................................... 11

Easy-to-Read Display Screen .................................................................................................... 11

Product Features ............................................................................................................................. 12

Measurement ................................................................................................................................. 12

Power Supply ........................................................................................................................... 12

Applications ................................................................................................................................... 13

True RMS Measurements .......................................................................................................... 13

Ideal for Replacing Analog Meters ............................................................................................ 13

Parameter ...................................................................................................................................... 14

Chapter 2 Mounting ........................................................................................................................ 15

Environmental Conditions ........................................................................................................ 15

Before Installation ........................................................................................................................... 16

Product Appearance ................................................................................................................. 16

Meter Dimensions .................................................................................................................... 17

Step 1: Panel Mounting................................................................................................................. 18

Mounting the Product on the Panel ............................................................................................ 18

Step 2: Voltage and Current Inputs ................................................................................................ 19

Voltage Input ........................................................................................................................... 19

Current Input ........................................................................................................................... 20

Wiring Diagram Using External PTs ........................................................................................... 21

Wiring Diagram Using No PTs .................................................................................................. 24

Step 3: Wiring the Power Supply and Ground Terminal ..................................................................... 27

Power Supply ........................................................................................................................... 27

Ground Terminal ..................................................................................................................... 27

Step 4: Attaching the Rear Cover/Powering Up the Meter ............................................................... 28

Page 9

Attaching the Cover ................................................................................................................. 28

Powering Up the Meter ............................................................................................................. 28

Chapter 3 Meter Operation/Setup .................................................................................................. 29

Display Mode ................................................................................................................................. 30

Setup Mode .................................................................................................................................... 33

Reset Mode .................................................................................................................................... 34

System Mode .................................................................................................................................. 35

Reactive Power Calculation ....................................................................................................... 37

Appendix A Specifications ................................................................................................................ 39

Appendix B Standard Compliance .................................................................................................. 40

Appendix C Test Report .................................................................................................................. 41

Measurement Test ........................................................................................................................... 41

Reliability Test ................................................................................................................................. 42

 
 
Page  10 
Figures 
 
Fig 1.1 Front View .................................................................................................................... 16 
Fig 1.2 Rear View ..................................................................................................................... 16 
Fig 1.3 Front View .................................................................................................................... 17 
Fig 1.4 Rear View ..................................................................................................................... 17 
Fig 1.5 Side View ..................................................................................................................... 17 
Fig 1.6 ANSI 4” ....................................................................................................................... 18 
Fig 1.7 DIN96 ......................................................................................................................... 18 
Fig 1.8 Voltage and Current Connector..................................................................................... 19 
Fig 1.9 Single Phase 2 Wire Connection(1P2U) ......................................................................... 21 
Fig 1.10 Three Phase 3 Wire Open Delta Connection Using 2 CTs(3P3O) .................................. 22 
Fig 1.11 Three Phase 3 Wire Open Delta Connection Using 3 CTs(3P3O) .................................. 22 
Fig 1.12 Three Phase 4 Wire Connection Using 3 PTs and 3 CTs(3P4U) ...................................... 23 
Fig 1.13 Single Phase 2 Wire Direct Connection(1P2U) .............................................................. 24 
Fig 1.14 Single Phase 3 Wire Direct Connection Using 2 CTs(1P3U) ........................................... 25 
Fig 1.15 Three Phase 3 Wire Open Delta Connection (3P3O) .................................................... 25 
Fig 1.16 Three Phase 3 Wire Open Delta Connection Using 3 CTs (3P3O) ................................. 26 
Fig 1.17 Three Phase 4 Wire Direct Connection Using 3 CTs (3P4U) ........................................... 26 
Fig 1.18 Wiring the Power Supply and Ground Terminal ............................................................ 27 
Fig 1.19 Cover ........................................................................................................................ 28 
Fig 2.1 Measurement Groups ................................................................................................... 30 
Fig 3.2 Power Sign[according to general calculation] ................................................................. 37 
 

Page 11

Chapter 1 Introduction

Overview

Integrated Measurements of Various Electrical Parameters

Accura 3000 is a high accuracy digital power meter, tailored for reliable measurements and

accurate analysis of power consumption. Installed in factories, power and generator panels in

buildings, etc, the device performs integrated measurements of various power parameters,

including voltage, current, power, frequency, and power factor.

Accurate Measurements

Measurement accuracy is a key factor that determines the reliability of energy management

systems. Low measurement accuracy causes inconsistency between the energy of the incoming

feeder and the sum of energy measured on the load side. It makes it difficult to perform reliable

energy management. Accura 3000 provides highly accurate measurements of voltage and current

(±0.2% of reading) and meets IEC 62053-22 class 0.5S for power and energy measurements. It

helps to address problems caused by measurement errors and allows for efficient energy

management.

Proven Safety and Reliability with CE/UL Certifications

The internal and external structures of Accura 3000, including the design of the product and the

circuit meet safety requirements for CE(IEC 61010) and UL(UL 61010-2, 2nd edition) standards. A

busbar is provided with the product for easier wiring of CTs when installing the product. The busbar

minimizes fire hazards by ensuring safety under an overcurrent condition.

Easy-to-Read Display Screen

Accura 3000 displays voltage, current, power, and energy data simultaneously. Its 0.56" 7-segment

display screen(3 rows) makes it easy to read data even from a long distance.

Page 12

Product Features

Measurement

64 samples/cycle, True RMS

IEC 62053-22 Class 0.5S

50, 60 Hz

Line to neutral voltage, line to line voltage, current

Power [active, reactive], energy [active], power factor, frequency

Fundamental component/true RMS of current

4 quadrant power

Peak demand[current, power]

Maximum/minimum value

Power Supply

AC 85 ~ 265V, 50/60Hz

DC 100 ~ 300V

Power consumption: 10VA

Page 13

Applications

True RMS Measurements

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 3000 makes high accuracy True RMS measurements for voltage and current

distorted with harmonics.

Ideal for Replacing Analog Meters

Accura 3000 meets both NSI C39.1(4" Round) and DIN 96 standards for installation. It features

the installation dimensions same as those of analog meters. Thus, there is no need to create

cutouts on the panel when installing Accura 3000 in the existing switchgear panels. It makes it easy

to replace analog meters with digital meters.

Page 14

Measurement Parameters

Parameter

Real-time1

Average2

Total3

Maximum4

Minimum5

Phase voltage

■

Line to line voltage

■

Current

■

Power

Active

■

Reactive

■

Energy

Active

■

Frequency

■

Power factor

■

Demand

■

1.Instaneous value of each parameter 2. Average value of three phase parameters. 3. Total

value of three phase parameters.

4. If a realtime value is greater than the maximum value, the maximum value is updated.(The

value measured within 10 msec after power up is ignored.)

5. If a realtime value is smaller than the minimum value, the minimum value is updated. (The value

measured within 10 msec after power up is ignored.)

Note

The maximum and minimum values will not be updated with no power-up.

Page 15

Chapter 2 Mounting

Environmental Conditions

The Accura 3000 should be mounted in a dry, dirt free location away from heat sources and very

high electric fields. To operate the product properly, environmental conditions as shown below

should be considered.

Environmental Conditions

Description

Installation location

Indoors

Operating temperature

-20 to 70C[-4 to 158℉]

Storage temperature

-40 to 85C[-40 to 185℉]

Operating humidity

5 - 95%(non-condensing)

Caution

The 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.

Page 16

Before Installation

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

presented on the “Installation Considerations” page.

Caution

Power up after the voltage and current wiring is completed.

Product Appearance

Fig 1.1 Front View

Fig 1.2 Rear View

Page 17

Meter Dimensions

Fig 1.3 Front View

Fig 1.4 Rear View

Fig 1.5 Side View

Page 18

Step 1: Panel Mounting

Mounting the Product on the Panel

1. Remove the connector on the bottom of the meter.

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

3. Fix the meter onto the panel by turning the mounting nut. When conforming to the

DIN96 standard, there is no need to drill holes on the panel.

Fig 1.6 ANSI 4”

Fig 1.7 DIN96

Note

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

Page 19

Step 2: Voltage and Current Inputs

Fig 1.8 Voltage and Current Connector

Voltage Input

Item

Description

Pin name

V1, V2, V3, Vn

Connector

Terminal block

Wire specification

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

Caution

In three-phase 3-wire open delta connection mode, you should use PTs if line-to-line voltage

exceeds 457 V.

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.

Caution

In case where PTs are required, fuses should be installed on the secondary of the PTs.

Page 20

Current Input

Item

Description

Pin name

1S, 2S, 3S, 1L, 2L, 3L

Connector

Terminal block[Busbar]

Wire

2.1 to 6 mm2[ 14 to 10 AWG]

Ratings

5A nominal/ 10A full scale 3 ~

Burden

Maximum 0.005A/phase @10A

Compliance

Pollution degree 2, Installation Category Ⅲ

CT[Current Transformer]

Item

Description

Compliance

UL61010-1; and IEC61010-1 2nd Edition, Pollution Degree 2,

Overvoltage Category Ⅲ

CT Primary 1

Equal to current rating of the power feed protection device.

CT Secondary Burden

> 3VA

1 If the predicted peak load is considerably less than the rated system capacity, you can improve

accuracy and resolution by selecting a lower rated CT.

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ROOTECH Accura 3000 User guide

ROOTECH Accura 3000 User guide

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