WAGO I/O System 750 XTR 750-495/040-010 User manual

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Manual
WAGO I/O System 750 XTR
750-495/040-010
3
-Phase POM 20KV 300A XTR
3
-Phase Power Measurement; 20 kV AC; 300 A;
Extreme
(* only in connection with sensors according to section “Measurement of
Voltage, Current and Power”)
Version 1.0.0
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2 WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
© 2020 WAGO Kontakttechnik GmbH & Co. KG
All rights reserved.
WAGO Kontakttechnik GmbH & Co. KG
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [email protected]
Web: www.wago.com
Technical Support
Phone: [phone] – 4 45 55
Fax: [phone] – 84 45 55
E-Mail: [email protected]
Every conceivable measure has been taken to ensure the accuracy and
completeness of this documentation. However, as errors can never be fully
excluded, we always appreciate any information or suggestions for improving the
documentation.
E-Mail: [email protected]
We wish to point out that the software and hardware terms as well as the
trademarks of companies used and/or mentioned in the present manual are
generally protected by trademark or patent.
WAGO is a registered trademark of WAGO Verwaltungsgesellschaft mbH.
=== Ende der Liste für Textmarke Einband_vorne = ==

WAGO I/O System 750 XTR Table of Contents 3
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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Table of Contents
1Notes about this Documentation ..............................................................6
1.1 Validity of this Documentation..................................................................6
1.2 Revision History.......................................................................................7
1.3 Copyright..................................................................................................7
1.4 Symbols ...................................................................................................8
1.5 Number Notation......................................................................................9
1.6 Font Conventions.....................................................................................9
2Important Notes ........................................................................................10
2.1 Legal Bases ...........................................................................................10
2.1.1 Subject to Changes...........................................................................10
2.1.2 Personnel Qualifications....................................................................10
2.1.3 Use of the 750 Series in Compliance with Underlying Provisions.....10
2.1.4 Technical Condition of Specified Devices .........................................11
2.1.4.1 Disposal........................................................................................11
2.1.4.1.1 Electrical and Electronic Equipment ........................................11
2.1.4.1.2 Packaging ................................................................................12
2.2 Safety Advice (Precautions)...................................................................13
3Device Description ...................................................................................16
3.1 View .......................................................................................................18
3.2 Connectors.............................................................................................19
3.2.1 Data Contacts/Local Bus...................................................................19
3.2.2Power Jumper Contacts/Field Supply ...............................................19
3.2.3 CAGE CLAMP®Connectors..............................................................20
3.3 Display Elements ...................................................................................21
3.4 Operating Elements ...............................................................................22
3.5 Schematic Diagram................................................................................22
3.6 Technical Data.......................................................................................24
3.6.1 Device Data.......................................................................................24
3.6.2 Power Supply ....................................................................................24
3.6.3 Measurement Inputs..........................................................................25
3.6.4 Measured Values ..............................................................................26
3.6.5 Measurement Accuracy.....................................................................28
3.6.6 Communication .................................................................................28
3.6.7 Connection Technology.....................................................................28
3.6.8 Mechanical Conditions ......................................................................29
3.6.9 Climatic Environmental Conditions....................................................29
3.7 Approvals...............................................................................................30
3.8 Standards and Guidelines......................................................................31
4Function Description................................................................................35
4.1 Measurement Principle ..........................................................................35
4.2 Measured Value Overview.....................................................................35
4.3 Description of the Measured Values......................................................37
4.4 Measurement Errors ..............................................................................43
5Process Image ..........................................................................................46

4 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
5.1 Overview of the Process Data ...............................................................47
5.2 Output Data............................................................................................48
5.2.1 Definition of the Control Words .........................................................48
5.2.2 Definition of the Output Data Words..................................................49
5.3 Input Data ..............................................................................................50
5.3.1 Definition of the Status Words...........................................................50
5.3.2 Definition of the Input Data Words ....................................................55
5.4 Descriptions for the Process Image .......................................................59
5.4.1 AC Measured Value Collection (010)................................................60
5.4.2 Harmonic Analysis Collections (020, 021, 022).................................61
5.4.3 Transient Reaction Measured Values ...............................................63
5.5 Measured Value Collections ..................................................................64
5.5.1 Collection 010 – AC Measured Values..............................................64
5.5.2 Collections 020, 021 and 022 – Harmonic Analysis..........................68
5.6 Examples of the Calculation of the Measured Values from the
Process Values......................................................................................69
6Mounting ...................................................................................................71
6.1 Mounting Sequence...............................................................................72
6.2 Inserting and Removing Devices ...........................................................73
6.2.1 Inserting the I/O Module....................................................................73
6.2.2 Removing the I/O Module..................................................................74
7Connect Devices.......................................................................................75
7.1 Protection against Hazardous Touch Voltages......................................75
7.2 Shielding ................................................................................................76
7.2.1 General .............................................................................................76
7.2.2 Fieldbus Cables.................................................................................76
7.2.3 Shielded Signal Lines........................................................................77
7.3 Connecting a Conductor to the CAGE CLAMP®....................................78
7.4 Measurement of Voltage, Current and Power........................................79
8Commissioning.........................................................................................81
8.1 General ..................................................................................................81
8.1.1 Software Interface .............................................................................82
8.1.2 “Start” Ribbon....................................................................................84
8.1.3 “Measured Value Views” Menu .........................................................84
8.1.4 Status Bar .........................................................................................85
8.1.5 “Settings” Dialog................................................................................86
8.1.6 Setting Measurement Units...............................................................88
8.2Settings and Measured Values ..............................................................89
8.2.1 “I/O Module” Tab ...............................................................................89
8.2.2 Tabs “Phase L1,” “Phase L2” and “Phase L3”...................................91
8.2.3 “Energy” Tab .....................................................................................92
8.2.4 “Factory Settings” Tab.......................................................................94
8.2.5 Displaying the Measured Values with WAGO-I/O-CHECK ...............96
8.2.5.1 “Overview” View ...........................................................................96
8.2.5.2 “Current/Voltages” View ...............................................................98
8.2.5.3 “Powers” View ..............................................................................99
8.2.5.4 “Energies” View ..........................................................................100
8.2.5.5 “Upper Harmonics” View ............................................................101

WAGO I/O System 750 XTR Table of Contents 5
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
8.2.5.6 “Measurement Recording” View .................................................103
8.2.5.7 “Information” View ......................................................................104
9Firmware Update ....................................................................................105
10 Appendix .................................................................................................106
10.1 Examples of CSV Files ........................................................................106
10.1.1 Snapshot .........................................................................................106
10.1.2 Measurement Recording.................................................................111
10.2 Factory Settings...................................................................................112
10.3 Register Assignment............................................................................114
10.4 Parameter Assignment ........................................................................121
List of Figures ..................................................................................................126
List of Tables....................................................................................................127
=== Ende der Liste für Textmarke Verzeichni s_vorne ===

6 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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1 Notes about this Documentation
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Always retain this documentation!
This documentation is part of the product. Therefore, retain the documentation
during the entire service life of the product. Pass on the documentation to any
subsequent user. In addition, ensure that any supplement to this documentation
is included, if necessary.
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1.1 Validity of this Documentation
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This documentation is only applicable to the I/O module 750-495/040-010
(3-Phase POM 20KV 300A XTR).
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The I/O module 750-495/040-010 shall only be installed and operated according
to the instructions in this manual, in the system description for the WAGO I/O
System 750 XTR and in the manual for the used fieldbus coupler/controller.
Consider power layout of the WAGO I/O System 750 XTR!
In addition to these operating instructions, you will also need the system
description “Design Notes XTR – Guidelines and Recommendations for
Increasing Operational Safety” and the manual for the used fieldbus
coupler/controller, which can be downloaded at www.wago.com. There, you can
obtain important information including information on electrical isolation, system
power and supply specifications.
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WAGO I/O System 750 XTR Table of Contents 7
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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1.2 Revision History
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Table 1: Revision History
Document
Version
Device Version
Change
Hardware
Firmware
1.0.0
01 and
above
01
Initial publication
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1.3 Copyright
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This Manual, including all figures and illustrations, is copyright-protected. Any
further use of this Manual by third parties that violate pertinent copyright
provisions is prohibited. Reproduction, translation, electronic and phototechnical
filing/archiving (e.g., photocopying) as well as any amendments require the
written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany.
Non-observance will involve the right to assert damage claims.
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8 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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1.4 Symbols
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Personal Injury!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
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Personal Injury Caused by Electric Current!
Indicates a high-risk, imminently hazardous situation which, if not avoided, will
result in death or serious injury.
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Personal Injury!
Indicates a moderate-risk, potentially hazardous situation which, if not avoided,
could result in death or serious injury.
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Personal Injury!
Indicates a low-risk, potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
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Damage to Property!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
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Damage to Property Caused by Electrostatic Discharge (ESD)!
Indicates a potentially hazardous situation which, if not avoided, may result in
damage to property.
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Important Note!
Indicates a potential malfunction which, if not avoided, however, will not result in
damage to property.
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WAGO I/O System 750 XTR Table of Contents 9
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
Additional Information:
Refers to additional information which is not an integral part of this
documentation (e.g., the Internet).
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1.5 Number Notation
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Table 2: Number Notation
Number Code
Example
Note
Decimal
100
Normal notation
Hexadecimal
0x64
C notation
Binary
'100'
'0110.0100'
In quotation marks, nibble separated
with dots (.)
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1.6 Font Conventions
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Table 3: Font Conventions
Font Type
Indicates
italic
Names of paths and data files are marked in italic-type.
e.g.: C:\Program Files\WAGO Software
Menu
Menu items are marked in bold letters.
e.g.: Save
>
A greater-than sign between two names means the selection of a
menu item from a menu.
e.g.: File > New
Input
Designation of input or optional fields are marked in bold letters,
e.g.:
Start of measurement range
“Value”
Input or selective values are marked in inverted commas.
e.g.: Enter the value “4 mA” under Start of measurement range.
[Button]
Pushbuttons in dialog boxes are marked with bold letters in square
brackets.
e.g.: [Input]
[Key]
Keys are marked with bold letters in square brackets.
e.g.:
[F5]
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10 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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2 Important Notes
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This section includes an overall summary of the most important safety
requirements and notes that are mentioned in each individual section. To protect
your health and prevent damage to devices as well, it is imperative to read and
carefully follow the safety guidelines.
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2.1 Legal Bases
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2.1.1 Subject to Changes
WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any
alterations or modifications. WAGO Kontakttechnik GmbH & Co. KG owns all
rights arising from the granting of patents or from the legal protection of utility
patents. Third-party products are always mentioned without any reference to
patent rights. Thus, the existence of such rights cannot be excluded.
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2.1.2 Personnel Qualifications
All sequences implemented on WAGO I/O System 750 devices may only be
carried out by electrical specialists with sufficient knowledge. The specialists
must be familiar with the current norms and guidelines for the devices and
environments.
All changes to the coupler or controller should always be carried out by qualified
personnel with sufficient skills in PLC programming.
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2.1.3 Use of the 750 Series in Compliance with Underlying
Provisions
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Fieldbus couplers, controllers and I/O modules found in the modular WAGO I/O
System 750 receive digital and analog signals from sensors and transmit them to
actuators or higher-level control systems. Using controllers, the signals can also
be (pre-) processed.
The devices have been developed for use in an environment that meets the IP20
protection class criteria. Protection against finger injury and solid impurities up to
12.5 mm diameter is assured; protection against water damage is not ensured.
Unless otherwise specified, operation of the devices in wet and dusty
environments is prohibited.
Operating the WAGO I/O System 750 devices in home applications without
further measures is only permitted if they meet the emission limits (emissions of
interference) according to EN 61000-6-3. You will find the relevant information in
the section “Device Description” > “Standards and Guidelines” in the manual for
the used device.

WAGO I/O System 750 XTR Table of Contents 11
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
Appropriate housing (per 2014/34/EU) is required when operating the WAGO I/O
System 750 in hazardous environments. Please observe the installation
regulations! Please note that a prototype test certificate must be obtained that
confirms the correct installation of the system in a housing or switch cabinet.
The implementation of safety functions such as EMERGENCY STOP or safety
door monitoring must only be performed by the F I/O modules within the modular
WAGO I/O System 750. Only these safe F I/O modules ensure functional safety
in accordance with the latest international standards. WAGO's interference-free
output modules can be controlled by the safety function.
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2.1.4 Technical Condition of Specified Devices
The devices to be supplied ex works are equipped with hardware and software
configurations, which meet the individual application requirements. These
modules contain no parts that can be serviced or repaired by the user. The
following actions will result in the exclusion of liability on the part of WAGO
Kontakttechnik GmbH & Co. KG:
• Repairs,
• Changes to the hardware or software that are not described in the
operating instructions,
• Improper use of the components.
Further details are given in the contractual agreements. Please send your
request for modified and new hardware or software configurations directly to
WAGO Kontakttechnik GmbH & Co. KG.
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2.1.4.1 Disposal
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2.1.4.1.1 Electrical and Electronic Equipment
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Electrical and electronic equipment may not be disposed of
with household waste. This also applies to products without
this symbol.
Electrical and electronic equipment contain materials and substances that can be
harmful to the environment and health. Electrical and electronic equipment must
be disposed of properly after use.
WEEE 2012/19/EU applies throughout Europe. Directives and laws may vary
nationally.

12 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
Environmentally friendly disposal benefits health and protects
the environment from harmful substances in electrical and
electronic equipment.
• Observe national and local regulations for the disposal of electrical and
electronic equipment.
• Clear any data stored on the electrical and electronic equipment.
• Remove any added battery or memory card in the electrical and
electronic equipment.
• Have the electrical and electronic equipment sent to your local
collection point.
Improper disposal of electrical and electronic equipment can be harmful to the
environment and human health.
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2.1.4.1.2 Packaging
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Packaging contains materials that can be reused.
PPWD 94/62/EU and 2004/12/EU packaging guidelines apply throughout
Europe. Directives and laws may vary nationally.
Environmentally friendly disposal of the packaging protects the environment and
allows sustainable and efficient use of resources.
• Observe national and local regulations for the disposal of packaging.
• Dispose of packaging of all types that allows a high level of recovery,
reuse and recycling.
Improper disposal of packaging can be harmful to the environment and wastes
valuable resources.
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WAGO I/O System 750 XTR Table of Contents 13
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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2.2 Safety Advice (Precautions)
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For installing and operating purposes of the relevant device to your system the
following safety precautions shall be observed:
Pos: 18.13 /Serie 750 (W AGOI /O SYSTEM)/Wichti ge Erläuterungen (alte Str uktur)/Sicher heits- und sonstige Hinweise/ Gefahr/Gefahr: Installation und W artung nur durch geschultes Fac hpersonal @ 35\mod_15616602890 52_21.docx @ 549373 @ @ 1
Installation and maintenance only by trained specialist personnel
The I/O module must only be installed and maintained by trained specialist
personnel in the medium voltage range.
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Use only standards-compliant sensors, and pay attention to the technical
data
Use only voltage sensors approved per IEC 60044-7 (new version: IEC 61869-7)
and current sensors per IEC 60044-8 (new version: IEC 61869-8), and do so in
accordance with the information in the section “Technical Data.”
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Install protection against electric shock!
All wiring for the measurement system shall be provided with protection against
shock hazard voltages along with the corresponding safety signs!
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Do not work on devices while energized!
All power sources to the device shall be switched off prior to performing any
installation, repair or maintenance work.
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Install device in only one suitable enclosure!
The device is an open system. Install the device in a suitable enclosure. This
enclosure must:
• Guarantee that the max. permissible degree of pollution is not exceeded.
• Offer adequate protection against contact.
• Prevent fire from spreading outside of the enclosure.
• Offer adequate protection against UV irradiation.
• Guarantee mechanical stability
• Restrict access to authorized personnel and may only be opened with tools
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14 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
Ensure disconnect and overcurrent protection!
The device is intended for installation in automation technology systems.
Disconnect protection is not integrated. Connected systems must be protected by
a fuse.
Provide suitable disconnect and overcurrent protection on the system side!
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Ensure a standard connection!
To minimize any hazardous situations resulting in personal injury or to avoid
failures in your system, the data and power supply lines shall be installed
according to standards, with careful attention given to ensuring the correct
terminal assignment. Always adhere to the EMC directives applicable to your
application.
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Only connect or disconnect lines when power is safely isolated
Hazardous voltages and currents are present on the primary side of the sensors
used. Contact with the lines when they are live can result in severe injury or
death. Therefore, read and observe the following safety rules before you perform
work on the device:
1. Disconnect the respective system component from the power supply.
2. Secure the system component against unintentional restart.
3. Verify that the voltage is actually isolated.
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Do not touch hot surfaces!
The surface of the housing can become hot during operation. If the device was
operated at high ambient temperatures, allow it to cool off before touching it.
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Ensure proper contact with the DIN-rail!
Proper electrical contact between the DIN-rail and device is necessary to
maintain the EMC characteristics and function of the device.
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WAGO I/O System 750 XTR Table of Contents 15
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
Replace defective or damaged devices!
Replace defective or damaged device/module (e.g., in the event of deformed
contacts).
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Protect the components against materials having seeping and insulating
properties!
The components are not resistant to materials having seeping and insulating
properties such as: aerosols, silicones and triglycerides (found in some hand
creams). If you cannot exclude that such materials will appear in the component
environment, then install the components in an enclosure being resistant to the
above-mentioned materials. Clean tools and materials are imperative for
handling devices/modules.
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Clean only with permitted materials!
Clean housing and soiled contacts with propanol.
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Do not use any contact spray!
Do not use any contact spray. The spray may impair contact area functionality in
connection with contamination.
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Do not reverse the polarity of connection lines!
Avoid reverse polarity of data and power supply lines, as this may damage the
devices involved.
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Avoid electrostatic discharge!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge when touched. Please observe the safety precautions
against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the
devices, please ensure that environmental factors (personnel, work space and
packaging) are properly grounded.
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16 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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3 Device Description
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The 750-495/040-010 3-Phase Power Measurement Module (also referred to by
the short name “I/O module”) allows measurement of electrical data in a 3-phase
supply network in the medium voltage range up to 20 kVRMS by means of voltage
sensors per IEC 60044-7 (new version: IEC 61869-7) and current sensors per
IEC 60044-8 (new version: IEC 61869-8). Observe the information in chapter
“Technical Data”.
The I/O module measures nominal voltages up to ULL = 20 kVRMS (ULN =
11.547 kVRMS) and line-to-line nominal currents up to 300 ARMS. It provides a large
number of measured variables, allowing comprehensive analysis of the 3-phase
network. These measured values allow operators optimized control of their
equipment, protecting the system against damage and failure.
The measured values provided by the I/O module indicate the load type
(inductive or capacitive) and whether it is an energy consumer or producer, for
example. This allows visualization as a 4-quadrant display, as has been
implemented in the display of the measured values in WAGO-I/O-CHECK,
among other things.
The measured values provided are described in the following sections.
The voltages of the 3 phases are connected via voltage sensors to CAGE
CLAMP® connections L1, L2, L3 and N, and the currents are connected via
current sensors to CAGE CLAMP® connections I1, I2, I3 and N. On the basis of
these input signals, the I/O module determines the various AC measured
quantities, such as voltage and current, reactive, apparent and active power,
energy consumption, power factor, phase angle and frequency. Harmonic
analysis (current/voltage) is also possible for a selectable phase up to the
41st harmonic. The measured quantities are available in the process image,
without requiring high processing power from the controller.
Use only standards-compliant sensors, and pay attention to the technical
data
Use only voltage sensors approved per IEC 60044-7 (new version: IEC 61869-7)
and current sensors per IEC 60044-8 (new version: IEC 61869-8), and do so in
accordance with the information in the section “Technical Data.”
I/O module not suitable for billing purposes
Regardless of the accuracy class of the current and voltage sensors used, the
I/O module is not approved as a meter for billing purposes in the sense of the
electricity metering standard (DIN 43856).
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WAGO I/O System 750 XTR Table of Contents 17
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
Use a power supply module!
Use a power supply module for field-side power supply of downstream I/O
modules.
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Mixed operation
Mixed operation (standard/XTR modules) within a node is possible when groups
of modules are electrically isolated on the field side (i.e., electrically isolated
power supply).
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The I/O module can be operated with all fieldbus couplers/controllers of the
WAGO-I/O-SYSTEM 750 XTR.
Observe the instruction for mixed operation when used in mixed operation behind
standard fieldbus couplers/controllers.
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18 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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3.1 View
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Figure 1: View 750-495/040-010
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Table 4: Legend for Figure “View”
Pos.
Description
Details See Section
1
Marking possibility with Mini-
WSB
---
2
Status LEDs
“Device Description” > “Display Elements”
3
Data contacts
“Device Description” > “Connectors”
4
CAGE CLAMP®connectors
“Device Description” > “Connectors”
5
Release tab
“Mounting” > ”Inserting and Removing
Devices”
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WAGO I/O System 750 XTR Table of Contents 19
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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3.2 Connectors
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3.2.1 Data Contacts/Local Bus
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Communication between the fieldbus coupler/controller and the I/O modules as
well as the system supply of the I/O modules is carried out via the local bus. The
contacting for the local bus consists of 6 data contacts, which are available as
self-cleaning gold spring contacts.
Figure 2: Data Contacts
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Do not place the I/O modules on the gold spring contacts!
Do not place the I/O modules on the gold spring contacts in order to avoid soiling
or scratching!
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Pay attention to potential equalization from the environment!
The devices are equipped with electronic components that may be destroyed by
electrostatic discharge. When handling the devices, please ensure that
environmental factors (personnel, work space and packaging) are properly
equalized. Do not touch any conducting parts, e.g., data contacts.
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3.2.2 Power Jumper Contacts/Field Supply
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The I/O module 750-495/040-010 has no power jumper contacts.
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Use a power supply module!
Use a power supply module for field-side power supply of downstream I/O
modules.
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20 Table of Contents WAGO I/O System 750 XTR
750-495/040-010 3-Phase POM 20KV 300A XTR
Manual
Version 1.0.0
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3.2.3 CAGE CLAMP®Connectors
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Twelve CAGE CLAMP® connections allow the three voltage sensors and three
current sensors to be connected, each with a two-wire connection; see also
section “Connecting Devices.”
All N connections are connected internally to each other and are used for the
reference potential N. Therefore, all sensors use the same reference potential.
Figure 3: CAGE CLAMP®Connections of 750-495/040-010
Table 5: Legend for Figure “CAGE CLAMP®Connections of 750-495/040-010”
Measureme
nt Channel
Connection
Function
1
L1
Voltage, phase L1
I1
Current, phase L1
N
Reference potential N
2
L2
Voltage, phase L2
I2
Current, phase L2
N
Reference potential N
3
L3
Voltage, phase L3
I3
Current, phase L3
N
Reference potential N
–
N
Reference potential N
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