ROOTECH ACCURA 3000 User manual

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.
\

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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 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.

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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.

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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,

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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.

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Standards Compliance
Process Control Equipment
E324900
KCC-RTM-RTE-ACCURA3000

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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

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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

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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

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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

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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.

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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

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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.

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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.

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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.

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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

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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: 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.

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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.

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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.