ROOTECH ACCURA 3500S User guide

ACCURA 3500S

High Accuracy Digital Power Meter

Added with Extension modules Suits your various applications,

Providing simultaneous display of voltage, current, power, and energy.

User Guide[English]

Rev 1.4 2017/08/07

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Notice

Danger

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.

Electrical Symbols

Indicates alternative voltage or current.

Indicates direct voltage or current.

Installation Considerations

Installation and operation of Accura 3500S meter should be performed only by qualified,

competent personnel that have appropriate training and experience with high voltage

and current devices.

Danger

Failure to observe the following instructions may result in severe injury or death.

 During normal operation of the Accura 3500S 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 3500S meter after installation.

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Warning

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

 Do not apply Accura 3500S 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’s 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 arsing from the use of devices described

herein.

Except to the extent prohibited by applicable law, under no circumstances shall

Rootech Inc. be liable for consequential damages sustained in connection with said

product and Rootech Inc. neither assumes nor authorizes any representative or other

person any obligation or liability other than such as is expressly set forth herein.

ⓒ

2008 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.

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Standard Compliance

CE Approved

EN61326 and IEC61010

MEASURING EQUIPMENT

35DX

E258934

QMS-1347 KAB-QC-09

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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 other than software 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 essential 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

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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.

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.

Headquarter

102-611, Digital Empire2, Sinwon-ro 88,

Suwon, Korea

Tel : +82-31-695-7350 Fax : +82-31-695-7399

Homepage

www.rootech.com

E-mail

supervisor@rootech.com

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Revision History

The following versions of the Accura 3500S User’s Guide have been released.

Revision # Revision date Description

Revision 1.0 2008. 03. 05 Initial draft

Revision 1.1 2010. 10. 07 Voltage input rating adjusted

Revision 1.2 2015. 05. 12 Standard compliance updated

Revision 1.3 2016. 09. 05 Voltage wiring diagram updated

Revision 1.4 2017. 08. 07 IrDA deleted

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Contents

Chapter 1 Introduction ................................................................................................................................... 14

Overview ......................................................................................................................................................................................... 14

Power Measurements, Digital/Analog Input and Output Integration.................................................... 14

Accuracy, Power Quality ................................................................................................................................................ 14

CE/UL Safety and Reliability ........................................................................................................................................ 14

Easy Adding of Modules .............................................................................................................................................. 14

Features ........................................................................................................................................................................................... 16

Measurement ..................................................................................................................................................................... 16

Power Quality ..................................................................................................................................................................... 16

Basic Module ...................................................................................................................................................................... 16

Extension Module1 ........................................................................................................................................................... 16

Communication ................................................................................................................................................................. 16

Power Supply...................................................................................................................................................................... 17

Applications ................................................................................................................................................................................... 18

True RMS Measurements robust to harmonics ................................................................................................. 18

Power Quality Analysis .................................................................................................................................................. 18

Module Structure to adapt to different requirements in the field .......................................................... 18

Compatibility with Analog Meters ........................................................................................................................... 18

High Reliability Energy Management ..................................................................................................................... 18

Parameters ..................................................................................................................................................................................... 19

Chapter 2 Mounting ..................................................................................................................................... 20

Environmental Conditions ............................................................................................................................................ 20

Enclosure Considerations ............................................................................................................................................. 20

Before You Begin ........................................................................................................................................................................ 21

Meter Overview................................................................................................................................................................. 21

Meter Dimensions ............................................................................................................................................................ 22

Step 1: Mounting ..................................................................................................................................................................... 23

Sequence .............................................................................................................................................................................. 23

Step 2: Voltage and Current Inputs ................................................................................................................................ 24

Voltage Input ...................................................................................................................................................................... 24

Current Input ...................................................................................................................................................................... 25

Wiring Diagram Using External PTs ........................................................................................................................ 26

Direct Diagram Using No PTs .................................................................................................................................... 29

Step 3: Wire the RS485 Communication ........................................................................................................................ 32

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Step 4: Wire the Power Supply and Ground Terminal ............................................................................................. 33

Power Supply...................................................................................................................................................................... 33

Ground Terminal ............................................................................................................................................................... 33

Step 5: Add a Basic Module[DIO module] ..................................................................................................................... 35

Step 6: Wire a Basic Module ................................................................................................................................................. 36

DIO Module ........................................................................................................................................................................ 36

Step 7: Wire the Power Supply and Ground Terminal of a Basic module ..................................................... 39

Power Supply...................................................................................................................................................................... 39

Ground Terminal ............................................................................................................................................................... 39

Step 8: Add a Extension Module ..................................................................................................................................... 41

Step 9: Wire a Extension Module ....................................................................................................................................... 42

DI Module ............................................................................................................................................................................ 42

DO Module ......................................................................................................................................................................... 43

AI Module ............................................................................................................................................................................ 45

AO Module .......................................................................................................................................................................... 46

Step 10: Wire the Power Supply and Ground Terminal of a Exension module ........................................... 48

Power Supply...................................................................................................................................................................... 48

Ground Terminal ............................................................................................................................................................... 48

Step 11: Power Up the Meter ............................................................................................................................................ 50

Chapter 3 Meter Operation/Setup ............................................................................................................. 51

Display Mode ............................................................................................................................................................................... 52

Setup Mode .................................................................................................................................................................................. 59

Reset Mode ................................................................................................................................................................................... 61

System Mode ................................................................................................................................................................................ 62

Reactive Calculation Method...................................................................................................................................... 64

Module Mode .............................................................................................................................................................................. 66

Module Display Menu ................................................................................................................................................... 66

Module Setup Menu ...................................................................................................................................................... 69

APPENDIX A Standard Specification.......................................................................................................... 73

APPENDIX B Standard Compliance ............................................................................................................ 74

APPENDIX C Test Report ............................................................................................................................. 75

Measuring Test ............................................................................................................................................................................. 75

Reliability Test ............................................................................................................................................................................... 76

INDEX ................................................................................................................................................................. 77

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Figures

Fig 1.1 Front Side ............................................................................................................................................................. 21

Fig 1.2 Rear Side ............................................................................................................................................................... 21

Fig 1.3 Basic Module[DIO Module] Rear Side ................................................................................................... 21

Fig 1.4 Front View ............................................................................................................................................................ 22

Fig 1.5 Rear View.............................................................................................................................................................. 22

Fig 1.6 Side View .............................................................................................................................................................. 22

Fig 1.7 Side View[one extension module can be added as option when ordering] ...................... 22

Fig 1.8 ANSI 4” .................................................................................................................................................................. 23

Fig 1.9 DIN96 ..................................................................................................................................................................... 23

Fig 1.10 Voltage and Current Connector ............................................................................................................. 24

Fig 1.11 Single Phase 2 Wires, Wiring Mode = 1P2U ................................................................................... 26

Fig 1.12 Three Phase 3 Wire Open Delta Using 2CTs, Wiring Mode = 3P3O ................................... 27

Fig 1.13 Three Phase 3 Wire Open Delta Using 3CTs, Wiring Mode = 3P3O ................................... 27

Fig 1.14 Three Phase 4 Wires Using 3 PTs and 3 CTs, Wiring Mode = 3P4U ................................... 28

Fig 1.15 Single Phase 2 Wire Direct , Wiring Mode = 1P2U ..................................................................... 29

Fig 1.16 Single Phase 3 Wire Direct Using 2 CTs, Wiring Mode = 1P3U ............................................ 30

Fig 1.17 Three Phase 3 Wire Open Delta Direct, Wiring Mode = 3P3O .............................................. 30

Fig 1.18 Three Phase 3 Wire Open Delta Direct Using 3 CTs, Wiring Mode = 3P3O ................... 31

Fig 1.19 Three Phase 4 Wire Direct Using 3 CTs, Wiring Mode = 3P4U ............................................. 31

Fig 1.20 Communication Wiring ............................................................................................................................... 32

Fig 1.21 Wiring of Power Supply and Ground Terminal ............................................................................... 33

Fig 1.22 Adding of a Basic Module......................................................................................................................... 35

Fig 1.23 DIO Module ...................................................................................................................................................... 36

Fig 1.24 Digital Input...................................................................................................................................................... 36

Fig 1.25 DC Relay application .................................................................................................................................... 37

Fig 1.26 AC Relay application .................................................................................................................................... 37

Fig 1.27 Wiring of Power Supply and Ground Terminal of a Basic module ....................................... 39

Fig 1.28 adding of a extension module ................................................................................................................ 41

Fig 1.29 DI Module ......................................................................................................................................................... 42

Fig 1.30 Digital Input...................................................................................................................................................... 43

Fig 1.31 DO Module ....................................................................................................................................................... 43

Fig 1.32 DC Relay application .................................................................................................................................... 44

Fig 1.33 AC Relay application .................................................................................................................................... 44

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Fig 1.34 AI Module .......................................................................................................................................................... 45

Fig 1.35 Analog Input .................................................................................................................................................... 45

Fig 1.36 AO Module ....................................................................................................................................................... 46

Fig 1.37 Analog Output ................................................................................................................................................ 46

Fig 1.38 Wiring of Power Supply and Ground Terminal of a Extension module .............................. 48

Fig 2.1 Measurement Group A, B ............................................................................................................................ 52

Fig 2.2 Measurement Group C .................................................................................................................................. 52

Fig 2.3 Measurement Group D .................................................................................................................................. 52

Fig 2.4 x1000, x10 LED .................................................................................................................................................. 53

Fig 2.5 P, Q[according to general calculation] ................................................................................................... 64

Fig 2.6 DIO module channel information ............................................................................................................ 68

Fig 2.7 DI module channel information ................................................................................................................ 68

Fig 2.8 DO module channel information ............................................................................................................. 68

Fig 2.9 AI module channel information† ............................................................................................................... 68

Fig 2.10 AO module channel information† .......................................................................................................... 68

Fig 2.11 DIO module digital output channel 1 setup .................................................................................... 72

Fig 2.12 DIO module digital output channel 2 setup .................................................................................... 72

Fig 2.13 DO† module digital output channel 1 setup .................................................................................... 72

Fig 2.14 DO† module digital output channel 2 setup .................................................................................... 72

Fig 2.15 DO† module digital output channel 3 setup .................................................................................... 72

Fig 2.16 DO† module digital output channel 4 setup .................................................................................... 72

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Chapter 1 Introduction

Overview

Power Measurements, Digital/Analog Input and Output Integration

Accura 3500S is a high accuracy digital power meter, suited to power measurements

and digital/analog input and output. This enables customers to easily meet a variety of

digital/analog requirements in the field, remarkably cutting down expenses of customers

to additionally purchase separate RTU products in existing management system. The

device is applied to applications, such as electrical facilities, intelligent building system,

factory and etc.

Accuracy, Power Quality

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 3500S 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. Furthermore the device 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 3500S conforms to safety standard,

CE[IEC61010], UL[UL61010-1, 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. And optic interface between meter and module

essentially disturbs danger of the existing electrical contacts.

Easy Adding of Modules

Easy adding of modules to rear side of meter provides customized extension of function

to flexibly meet a variety of applications. Accura 3500S has a basic module, called

DIO module, and an extension module, one of digital input, digital output, analog input,

and analog output modules. the extension module is selected as an option when

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ordering.

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Features

Measurement

 64 Sampling/Cycle True RMS

 IEC 62053-22 Class 0.5S

 50, 60Hz

 Energy stored periodically to non-volatile memory.

 4 Quadrant Energy

kWh/kVARh received1, kWh/kVARh delivered1

kWh/kVARh net[kWh/kVARh received - kWh/kVARh delivered]

kWh/kVARh total[kWh/kVARh received + kWh/kVARh delivered]

 Phase voltage, line to line voltage, current

 Active power, reactive power, active energy, reactive energy†, power factor, frequency

 Fundamental component†, True RMS of current

 4 Quadrant Power

 Demand, peak demand

 Maximum, Minimum†

1kWh/kVARh received is positive for “view as load”, kWh/kVARh

delivered is positive for “view as generator”.

Power Quality

 Voltage/current THD

 Harmonic Analysis†

 K factor†

†It is available only on RS485 communication.



Basic Module

 DIO Module: Digital Input/output, 8/2 channels

Extension Module1

 DI Module: Digital Input 12 channels

 DO Module: Digital Output 4 channels

 AI Module: Analog Input 6 channels

 AO Module: Analog Output 6 channels

1Only one module to be chosen as option when ordering.

Communication

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 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 3500S makes high accuracy True RMS measurements

for voltage and current distorted with harmonics.

Power Quality Analysis

Accura 3500S provides k factor, analysis of voltage and current up to 31st harmonic, and

realtime waveform of voltage and current.

Module Structure to adapt to different requirements in the field

Easy adding of modules to rear side of meter provides customized extension capability

to flexibly meet a variety of applications. In the case of the existing IBS, DDC panel

concentrates all of input/output wiring, decreasing economical efficiency and reliability

of the overall system. Accura 3500S easily replaces the existing DDC panel, building the

optimal IBS system.

Compatibility with Analog Meters

Accura 3500S 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 3500S 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 Total3 Maximum4 Minimum5

Phase voltage ■ ■ ■ ■†

L

ine to line

voltage ■ ■ ■ ■†

Current ■ ■ ■

Power Active ■ ■ ■

Reactive ■† ■ ■†

Apparen

t ■† ■† ■†

Energy6 Active ■

Reactive ■†

Apparen

t ■†

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.

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

6Energy is periodically stored to non-volatile memory.

†It is available only on RS485 communication.

Note

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

All of the measurements are not shown for 5 seconds after power-up.

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Chapter 2 Mounting

Environmental Conditions

The Accura 3500S 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 3500S 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

3500S wiring and related components to allow for convenient troubleshooting.

Warning

The meter s

hould 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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ROOTECH ACCURA 3500S User guide

ROOTECH ACCURA 3500S User guide

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