MR ETOS IM User manual

Monitoring system
ETOS® IM
Operating instructions
5163667/06 EN

© All rights reserved by Maschinenfabrik Reinhausen
Dissemination and reproduction of this document and use and disclosure of its content are strictly prohibited
unless expressly permitted.
Infringements will result in liability for compensation. All rights reserved in the event of the granting of patents,
utility models or designs.
The product may have been altered since this document was published.
We reserve the right to change the technical data, design and scope of supply.
Generally the information provided and agreements made when processing the individual quotations and orders
are binding.
The original operating instructions were written in German.

Table of contents
Maschinenfabrik Reinhausen GmbH 2019 35163667/06 EN ETOS® IM
Table of contents
1 Introduction....................................................................................................................... 11
1.1 Manufacturer..................................................................................................................................... 11
1.2 Completeness................................................................................................................................... 11
1.3 Safekeeping...................................................................................................................................... 11
1.4 Notation conventions ........................................................................................................................ 11
1.4.1 Hazard communication system ...........................................................................................................................11
1.4.2 Information system..............................................................................................................................................13
1.4.3 Instruction system ...............................................................................................................................................13
1.4.4 Typographic conventions ....................................................................................................................................14
2 Safety................................................................................................................................. 15
2.1 Appropriate use ................................................................................................................................ 15
2.2 Inappropriate use.............................................................................................................................. 16
2.3 Fundamental Safety Instructions ...................................................................................................... 16
2.4 Personnel qualification...................................................................................................................... 18
2.5 Personal protective equipment ......................................................................................................... 19
3 IT security.......................................................................................................................... 21
4 Product description.......................................................................................................... 25
4.1 Scope of delivery .............................................................................................................................. 25
4.2 Function description.......................................................................................................................... 26
4.2.1 Bushing monitoring .............................................................................................................................................26
4.3 Performance features ....................................................................................................................... 27
4.4 Design............................................................................................................................................... 29
4.4.1 Power supply.......................................................................................................................................................30
4.4.2 Power supply.......................................................................................................................................................30
4.4.3 CPU (central processing unit) I ...........................................................................................................................31
4.4.4 Voltage measurement and current measurement...............................................................................................32
4.4.5 Digital inputs and outputs....................................................................................................................................33
4.4.6 Analog inputs and outputs...................................................................................................................................33
4.4.7 Media converter ..................................................................................................................................................34
4.4.8 Media converter with managed switch ................................................................................................................35
4.4.9 Voltage measurement .........................................................................................................................................36
4.4.10 Bus extension module.........................................................................................................................................36

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4.4.11 Bushing adapter and bushing coupling unit ........................................................................................................37
4.5 Main screen ...................................................................................................................................... 38
4.6 Additional operating controls and display elements when using the MControl touch panel (optional) ..
41
4.7 Operating concept ............................................................................................................................ 41
5 Mounting ........................................................................................................................... 47
5.1 Preparation ....................................................................................................................................... 47
5.2 Electromagnetic compatibility ........................................................................................................... 47
5.2.1 Wiring requirement of installation site ................................................................................................................48
5.2.2 Wiring requirement of operating site ..................................................................................................................48
5.2.3 Wiring requirement in control cabinet..................................................................................................................49
5.2.4 Information about shielding the CAN bus............................................................................................................50
5.3 Minimum distances........................................................................................................................... 51
5.4 Installing the 19-inch plug-in housing ............................................................................................... 51
5.5 Installing the individual components on a cap rail ............................................................................ 54
5.5.1 Fastening the cap rail..........................................................................................................................................54
5.5.2 Installing the bus rail on the cap rail....................................................................................................................55
5.5.3 Installing the assembly at a distance on the cap rail...........................................................................................56
5.6 Connecting device ............................................................................................................................ 57
5.6.1 Cable recommendation .......................................................................................................................................58
5.6.2 Information about connecting serial interfaces RS232 and RS485.....................................................................59
5.6.3 Notes on connecting to the MR sensor bus ........................................................................................................61
5.6.4 Information about laying fiber-optic cable ...........................................................................................................63
5.6.5 Mounting terminating resistor of CAN bus ..........................................................................................................64
5.6.6 Connecting cables to the system periphery ........................................................................................................64
5.6.7 Wiring the CPU assembly ...................................................................................................................................65
5.6.8 Wiring the UI 1/UI 3/UI 5 assembly .....................................................................................................................68
5.6.9 Wiring the AIO 2/AIO 4/AIO 8 assembly .............................................................................................................69
5.6.10 Wiring the DIO assembly ....................................................................................................................................74
5.6.11 Wiring the MC 2-2/SW3-3 assembly ...................................................................................................................78
5.6.12 Wiring the QS3.241 assembly.............................................................................................................................81
5.6.13 Connecting the power supply..............................................................................................................................83
6 Commissioning................................................................................................................. 85
6.1 Performing tests................................................................................................................................ 85
6.1.1 Ground test .........................................................................................................................................................85
6.1.2 Performing a dielectric test..................................................................................................................................87

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6.2 Setting the language......................................................................................................................... 89
6.3 Setting date and time........................................................................................................................ 90
6.4 Commissioning wizard...................................................................................................................... 90
6.5 Checking measured values and status of digital inputs and outputs................................................ 91
7 Operation........................................................................................................................... 92
7.1 Establishing connection to visualization ........................................................................................... 92
7.2 General............................................................................................................................................. 94
7.2.1 Configuring visualization .....................................................................................................................................94
7.2.2 Activating/deactivating automatic launch of commissioning wizard ....................................................................95
7.2.3 Setting measured value display ..........................................................................................................................95
7.2.4 Transformer name...............................................................................................................................................96
7.2.5 Remote behavior.................................................................................................................................................96
7.2.6 Accessing online help .........................................................................................................................................96
7.2.7 Activating/deactivating the USB interface ...........................................................................................................96
7.2.8 Set up automatic logout ......................................................................................................................................97
7.3 Control (optional) .............................................................................................................................. 97
7.3.1 Setting the desired value.....................................................................................................................................98
7.3.2 Bandwidth .........................................................................................................................................................111
7.3.3 Delay time T1 ....................................................................................................................................................112
7.3.4 Delay time T2 ....................................................................................................................................................114
7.4 Transformer data ............................................................................................................................ 116
7.4.1 Setting transformer data....................................................................................................................................116
7.4.2 Circuit examples for voltage transformers and current transformers ................................................................119
7.5 Measurement.................................................................................................................................. 133
7.5.1 Setting UI measuring channels .........................................................................................................................133
7.5.2 Control variable .................................................................................................................................................133
7.5.3 Regulation mode ...............................................................................................................................................134
7.5.4 Setting the display for the power factor.............................................................................................................134
7.6 Control of the motor-drive unit (optional) ........................................................................................ 135
7.6.1 Setting the switching pulse for controlling the motor-drive unit .........................................................................135
7.6.2 Setting motor runtime monitoring ......................................................................................................................136
7.6.3 Setting the switching direction...........................................................................................................................137
7.7 Parallel operation (optional)............................................................................................................ 137
7.7.1 Parallel operation methods ...............................................................................................................................137
7.7.2 Configuring parallel operation ...........................................................................................................................142
7.7.3 TAPCON® 2xx retrofit.......................................................................................................................................147

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7.7.4 Detecting parallel operation via group inputs (optional) ....................................................................................148
7.8 Monitoring functions........................................................................................................................ 149
7.8.1 Voltage monitoring ............................................................................................................................................149
7.8.2 Current monitoring ............................................................................................................................................151
7.8.3 Power monitoring ..............................................................................................................................................154
7.8.4 Power flow monitoring.......................................................................................................................................155
7.8.5 Tap position monitoring (optional).....................................................................................................................157
7.8.6 Bandwidth monitoring........................................................................................................................................158
7.8.7 Phase symmetry monitoring..............................................................................................................................160
7.8.8 Temperature monitoring....................................................................................................................................162
7.8.9 Tx statistics monitoring......................................................................................................................................163
7.8.10 Monitoring the gas volume of the Buchholz relay (OLTC) ................................................................................164
7.8.11 Monitoring the gas volume of the Buchholz relay (transformer)........................................................................165
7.8.12 Monitoring the oil pressure (transformer) ..........................................................................................................166
7.8.13 Monitoring the oil pressure (on-load tap-changer) ............................................................................................167
7.9 Target-tap-position operation.......................................................................................................... 168
7.10 Measured values ............................................................................................................................ 168
7.10.1 Displaying current measured values .................................................................................................................168
7.10.2 Displaying measured value recorder (optional).................................................................................................169
7.10.3 Setting the average value interval.....................................................................................................................173
7.10.4 Displaying temperature curve (optional) ...........................................................................................................174
7.10.5 Displaying winding temperatures (optional) ......................................................................................................175
7.10.6 Displaying the measured values of the Buchholz relay (optional).....................................................................176
7.10.7 Displaying the measured values of the pressure relief device (optional) ..........................................................177
7.10.8 Displaying the measured values of the dehydrating breather (optional) ...........................................................177
7.11 On-load tap-changer monitoring..................................................................................................... 178
7.11.1 Changing tap position designation (optional) ....................................................................................................178
7.11.2 Displaying tap-change operation statistics (optional)........................................................................................179
7.11.3 Motor Current Index (MCI) ................................................................................................................................180
7.11.4 Displaying information about contact wear (only OILTAP®).............................................................................184
7.12 Transformer monitoring .................................................................................................................. 185
7.12.1 Hot-spot calculation (optional)...........................................................................................................................185
7.12.2 Hot-spot forecast (optional)...............................................................................................................................188
7.12.3 Setting calculation of transformer's loss of life (optional) ..................................................................................189
7.12.4 Displaying protective device status (optional) ...................................................................................................190
7.13 Cooling system control (optional) ................................................................................................... 191
7.13.1 Configuring cooling stages................................................................................................................................191

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7.13.2 Configuring load-dependent mode....................................................................................................................195
7.13.3 Configuring periodic mode ................................................................................................................................196
7.13.4 Configuring alternating mode ............................................................................................................................196
7.13.5 Displaying status of cooling stages ...................................................................................................................197
7.13.6 Configuring the frequency-based cooling system control .................................................................................198
7.14 Dissolved gas analysis (optional) ................................................................................................... 201
7.14.1 Configuring DGA monitoring .............................................................................................................................202
7.14.2 Displaying measured values .............................................................................................................................205
7.15 Bushing monitoring (optional)......................................................................................................... 211
7.15.1 Setting the transformer data for the reference system (optional)......................................................................211
7.15.2 Configuring bushing monitoring ........................................................................................................................212
7.15.3 Displaying the state of the bushings .................................................................................................................218
7.16 MR sensor bus................................................................................................................................ 219
7.16.1 Configuring MR sensor bus...............................................................................................................................219
7.16.2 Managing sensors.............................................................................................................................................222
7.16.3 Function assignment .........................................................................................................................................223
7.16.4 Defining the sensors .........................................................................................................................................224
7.16.5 Displaying information on the connected sensors.............................................................................................229
7.17 Configuring analog inputs and outputs (optional) ........................................................................... 230
7.18 Configuring digital inputs and outputs............................................................................................. 232
7.19 Name plate (optional) ..................................................................................................................... 234
7.19.1 Enter the name plate data.................................................................................................................................234
7.19.2 Displaying the name plate.................................................................................................................................235
7.20 Maintenance (optional) ................................................................................................................... 235
7.20.1 Setting operator interval for OLTC maintenance...............................................................................................236
7.20.2 Setting operator interval for transformer maintenance......................................................................................237
7.20.3 Undertaking and confirming maintenance.........................................................................................................238
7.20.4 Displaying maintenance overview.....................................................................................................................241
7.20.5 Displaying the maintenance logbook ................................................................................................................241
7.20.6 Suppressing a maintenance event....................................................................................................................243
7.21 Overload (optional) ......................................................................................................................... 244
7.21.1 Configuring overload .........................................................................................................................................245
7.21.2 Displaying overload...........................................................................................................................................251
7.22 Event management......................................................................................................................... 252
7.22.1 Displaying and acknowledging events ..............................................................................................................253
7.22.2 Configuring events ............................................................................................................................................253

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7.22.3 Displaying event memory..................................................................................................................................255
7.23 SCADA ........................................................................................................................................... 256
7.23.1 Configuring IEC 61850 (optional)......................................................................................................................256
7.23.2 Configuring IEC 60870-5-101 (optional) ...........................................................................................................259
7.23.3 Configuring IEC 60870-5-103 (optional) ...........................................................................................................264
7.23.4 Configuring IEC 60870-5-104 (optional) ...........................................................................................................267
7.23.5 Configuring Modbus (optional) ..........................................................................................................................270
7.23.6 Configuring DNP3 (optional) .............................................................................................................................273
7.23.7 Configuring GOOSE (optional)..........................................................................................................................277
7.23.8 Configure data points (optional) ........................................................................................................................283
7.24 Configuring syslog .......................................................................................................................... 290
7.25 Time synchronization...................................................................................................................... 292
7.25.1 Activating time synchronization using SNTP.....................................................................................................293
7.25.2 Entering the time server address ......................................................................................................................293
7.25.3 Setting the time zone ........................................................................................................................................294
7.25.4 Setting synchronization interval ........................................................................................................................294
7.25.5 Automatic switchover between daylight saving time and standard time ...........................................................295
7.25.6 Setting the date and time manually...................................................................................................................295
7.26 User administration......................................................................................................................... 295
7.26.1 User roles..........................................................................................................................................................295
7.26.2 Changing password ..........................................................................................................................................297
7.26.3 Creating, editing and deleting users..................................................................................................................298
7.26.4 Setting access rights to parameters and events ...............................................................................................300
7.26.5 User authentication via RADIUS (optional) .......................................................................................................301
7.27 Information about device ................................................................................................................ 303
7.27.1 Hardware...........................................................................................................................................................303
7.27.2 Software ............................................................................................................................................................305
7.27.3 Parallel operation ..............................................................................................................................................305
7.28 Import/export manager ................................................................................................................... 306
7.28.1 Exporting data ...................................................................................................................................................306
7.28.2 Importing data (software version 3.44 and later)...............................................................................................308
7.29 Configuring media converter with managed switch ........................................................................ 309
7.29.1 Commissioning..................................................................................................................................................309
7.29.2 Configuration.....................................................................................................................................................311
7.30 Linking signals and events.............................................................................................................. 312
7.30.1 Linking functions ...............................................................................................................................................312

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7.30.2 Linking digital outputs and control system messages .......................................................................................314
7.31 TAPCON® Personal Logic Editor (TPLE)....................................................................................... 316
7.31.1 Function ............................................................................................................................................................316
7.31.2 Configuring TPLE..............................................................................................................................................329
8 Fault elimination ............................................................................................................. 333
8.1 General faults ................................................................................................................................. 333
8.2 Human-machine interface............................................................................................................... 333
8.3 Other faults ..................................................................................................................................... 334
9 Messages ........................................................................................................................ 335
9.1 Event messages ............................................................................................................................. 335
10 Uninstallation.................................................................................................................. 370
10.1 Uninstalling the CPU assembly ...................................................................................................... 371
10.2 Uninstalling the UI 1/UI 3 assembly................................................................................................ 374
10.3 Uninstalling the AIO 2/AIO 4 assembly........................................................................................... 375
10.4 Uninstalling the DIO 28-15/DIO 42-20 assembly............................................................................ 377
10.5 Uninstalling the MC 2-2/SW 3-3 assembly ..................................................................................... 379
10.6 Uninstalling the QS3.241 assembly................................................................................................ 381
10.7 Uninstalling the bus rail................................................................................................................... 382
10.8 Removing the bushing adapter and bushing coupling unit............................................................. 383
11 Disposal........................................................................................................................... 384
12 Technical data................................................................................................................. 385
12.1 Voltage supply ................................................................................................................................ 385
12.2 Voltage supply ................................................................................................................................ 385
12.3 Voltage measurement and current measurement .......................................................................... 386
12.4 Voltage measurement UI5-3.......................................................................................................... 387
12.5 Digital inputs and outputs ............................................................................................................... 388
12.6 Analog inputs and outputs .............................................................................................................. 390
12.7 CPU (central processing unit) I....................................................................................................... 391
12.8 System networking ......................................................................................................................... 393
12.9 Bus extension module .................................................................................................................... 394
12.10 Bushing monitoring......................................................................................................................... 395
12.10.1 Bushing adapter ................................................................................................................................................395
12.10.2 Bushing coupling unit ........................................................................................................................................398

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12.10.3 Connection cable ..............................................................................................................................................399
12.11 Ambient conditions ......................................................................................................................... 399
12.12 Standards and directives ................................................................................................................ 400
13 Appendix ......................................................................................................................... 402
13.1 Check list for commissioning .......................................................................................................... 402
13.2 Measured value log ........................................................................................................................ 403
Glossary .......................................................................................................................... 404
List of key words ............................................................................................................ 406

1 Introduction
Maschinenfabrik Reinhausen GmbH 2019 115163667/06 EN ETOS® IM
1 Introduction
This technical file contains detailed descriptions on the safe and proper in-
stallation, connection, commissioning and monitoring of the product.
It also includes safety instructions and general information about the prod-
uct.
This technical file is intended solely for specially trained and authorized per-
sonnel.
1.1 Manufacturer
The product is manufactured by:
Maschinenfabrik Reinhausen GmbH
Falkensteinstraße 8
93059 Regensburg, Germany
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
Further information on the product and copies of this technical file are avail-
able from this address if required.
1.2 Completeness
This technical file is incomplete without the supporting documents.
The following documents are considered supporting documents:
▪ Connection diagrams
▪ Supplement (optional)
1.3 Safekeeping
Keep this technical file and all supporting documents ready at hand and ac-
cessible for future use at all times.
1.4 Notation conventions
This section contains an overview of the symbols and textual emphasis
used.
1.4.1 Hazard communication system
Warnings in this technical file are displayed as follows.

1 Introduction
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1.4.1.1 Warning relating to section
Warnings relating to sections refer to entire chapters or sections, sub-sec-
tions or several paragraphs within this technical file. Warnings relating to
sections use the following format:
WARNING Type of danger!
Source of the danger and outcome.
► Action
► Action
1.4.1.2 Embedded warning information
Embedded warnings refer to a particular part within a section. These warn-
ings apply to smaller units of information than the warnings relating to sec-
tions. Embedded warnings use the following format:
DANGER! Instruction for avoiding a dangerous situation.
1.4.1.3 Signal words and pictograms
The following signal words are used:
Signal word Definition
DANGER Indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION Indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
NOTICE Indicates measures to be taken to prevent damage to property.
Table1: Signal words in warning notices
Pictograms warn of dangers:
Pictogram Definition
Warning of a danger point
Warning of dangerous electrical voltage

1 Introduction
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Pictogram Definition
Warning of combustible substances
Warning of danger of tipping
Warning of danger of crushing
Table2: Pictograms used in warning notices
1.4.2 Information system
Information is designed to simplify and improve understanding of particular
procedures. In this technical file it is laid out as follows:
Important information.
1.4.3 Instruction system
This technical file contains single-step and multi-step instructions.
Single-step instructions
Instructions which consist of only a single process step are structured as fol-
lows:
Aim of action
üRequirements (optional).
► Step 1 of 1.
ðResult of step (optional).
ðResult of action (optional).
Multi-step instructions
Instructions which consist of several process steps are structured as follows:

1 Introduction
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Aim of action
üRequirements (optional).
1. Step 1.
ðResult of step (optional).
2. Step 2.
ðResult of step (optional).
ðResult of action (optional).
1.4.4 Typographic conventions
The following typographic conventions are used in this technical file:
Typographic convention Purpose Example
UPPERCASE Operating controls, switches ON/OFF
[Brackets] PC keyboard [Ctrl] + [Alt]
Bold Software operating controls Press Continue button
…>…>… Menu paths Parameter > Control parameter
Italics System messages, error messages,
signals
Function monitoring alarm triggered
[► Number of pages]. Cross reference [► 41].
Table3: Typographic conventions

2 Safety
Maschinenfabrik Reinhausen GmbH 2019 155163667/06 EN ETOS® IM
2 Safety
This technical file contains detailed descriptions on the safe and proper in-
stallation, connection, commissioning, operation, and monitoring of the prod-
uct.
▪ Read this technical file through carefully to familiarize yourself with the
product.
▪ This technical file is a part of the product.
▪ Read and observe the safety instructions provided in this chapter in partic-
ular.
▪ Observe the warnings in this technical file in order to avoid function-re-
lated dangers.
▪ The product is manufactured on the basis of state-of-the-art technology.
Nevertheless, risks to life and limb for the user or impairment of the prod-
uct and other material assets may arise in the event of improper use.
2.1 Appropriate use
ETOS® IM is used to record and monitor a transformer's different measured
values. The product is designed solely for use in electrical energy systems
and facilities.
Bushing monitoring The optional bushing monitoring function is used to monitor capacitance-
graded bushings on power transformers in the Um = 123...420 kV voltage
levels (with voltage levels up to 765 kV on request). You can use this func-
tion to detect breakdowns at partial capacitances in the bushing and to moni-
toring aging in the bushings.
If used as intended, in compliance with the requirements and conditions
specified in this technical file and observing the warning notices in this tech-
nical file and attached to the product, the product does not pose a risk of in-
jury or damage to property or the environment. This applies throughout the
service life of the product, from delivery, installation and operation to re-
moval and disposal.
The following is considered appropriate use:
▪ Operate the product in accordance with this technical file, the agreed-
upon delivery conditions and the technical data.
▪ Ensure that all necessary work is performed by qualified personnel only.
▪ Only use the equipment and special tools included in the scope of delivery
for the intended purpose and in accordance with the specifications of this
technical file.
▪ Only operate the product in industrial areas. Observe the notices in this
technical file regarding electromagnetic compatibility and the technical
data.
▪ Bushing monitoring (optional)
– Use the product only with the bushings specified in the order.

2 Safety
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– Use the product only for high-voltage bushings of a power transformer
subject to similar installation conditions and thermal loads.
– Use the product only for bushings of the same type (manufacturer, se-
ries, technology, model year)
– Use the product only for bushings that were not previously damaged.
2.2 Inappropriate use
Use is considered to be inappropriate if the product is used other than as de-
scribed in the Appropriate use section. Please also note the following:
▪ The product is not suited for extending the permitted useful life of the
bushing specified by the bushing manufacturer.
▪ The product is not a protective device. Do not use it to handle safety-re-
lated functions.
▪ Risk of explosion and fire from highly flammable or explosive gases, va-
pors, or dusts. Do not operate product in areas at risk of explosion.
▪ The product is not intended for use in environments subject to strong cor-
rosion effects.
▪ Unauthorized or inappropriate changes to the product may lead to per-
sonal injury, material damage, and operational faults. Only modify product
following discussion with Maschinenfabrik Reinhausen GmbH.
2.3 Fundamental Safety Instructions
To prevent accidents, disruptions and damage as well as unacceptable ad-
verse effects on the environment, those responsible for transport, installa-
tion, operation, maintenance and disposal of the product or parts of the prod-
uct must ensure the following:
Personal protective equipment
Loosely worn or unsuitable clothing increases the danger of becoming
trapped or caught up in rotating parts and the danger of getting caught on
protruding parts. This poses a danger to life and limb.
▪ Wear appropriate personal protective equipment such as a helmet, work
gloves, etc. for the respective activity.
▪ Never wear damaged personal protective equipment.
▪ Never wear rings, necklaces, or other jewelry.
▪ If you have long hair, wear a hairnet.
Work area
Untidy and poorly lit work areas can lead to accidents.
▪ Keep the work area clean and tidy.
▪ Make sure that the work area is well lit.
▪ Observe the applicable laws for accident prevention in the relevant coun-
try.

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Working during operation
The product may only be operated in a sound, operational condition. Other-
wise it poses a danger to life and limb.
▪ Regularly check the operational reliability of safety equipment.
▪ Comply with the inspection work, maintenance work and maintenance in-
tervals described in this technical file.
Invisible laser radiation
Looking directly into the beam or the reflected beam can cause eye damage.
The beam is emitted at the optical connections or at the end of the fiber-optic
cables connected to them on the assemblies. Read the chapter "Technical
Data" [►Section 12, Page 385] for further information.
▪ Never look directly into the beam or the reflected beam.
▪ Never look into the beam with the aid of optical instruments such as a
magnifying glass or a microscope.
▪ In the event that the laser beam strikes your eyes, close your eyes imme-
diately and move your head out of the path of the beam.
Working with current transformers
Dangerous high voltages may occur when a current transformer is operated
with an open secondary circuit. This can lead to injuries and property dam-
age.
▪ Never operate a current transformer with an open secondary circuit; short-
circuit the current transformer to prevent this.
▪ Observe the information in the current transformer operating instructions.
Explosion protection
Highly flammable or explosive gases, vapors and dusts can cause serious
explosions and fire.
▪ Do not install or operate the product in areas where a risk of explosion is
present.
Safety markings
Warning signs and safety information plates are safety markings on the
product. They are an important aspect of the safety concept.
▪ Observe all safety markings on the product.
▪ Make sure all safety markings on the product remain intact and legible.
▪ Replace safety markings that are damaged or missing.

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Ambient conditions
To ensure reliable and safe operation, the product must only be operated
under the ambient conditions specified in the technical data.
▪ Observe the specified operating conditions and requirements for the in-
stallation location.
Modifications and conversions
Unauthorized or inappropriate changes to the product may lead to personal
injury, material damage and operational faults.
▪ Only modify the product after consultation with the manufacturer.
Spare parts
Spare parts not approved by the manufacturer may lead to physical injury,
damage to the product and operational faults.
▪ Only use spare parts approved by the manufacturer.
▪ Contact the manufacturer.
2.4 Personnel qualification
The person responsible for assembly, commissioning, operation, mainte-
nance and inspection must ensure that the personnel are sufficiently quali-
fied.
Electrically skilled person
The electrically skilled person has a technical qualification and therefore has
the required knowledge and experience, and is also conversant with the ap-
plicable standards and regulations. The electrically skilled person is also pro-
ficient in the following:
▪ Can identify potential dangers independently and is able to avoid them.
▪ Is able to perform work on electrical systems.
▪ Is specially trained for the working environment in which (s)he works.
▪ Must satisfy the requirements of the applicable statutory regulations for
accident prevention.
Electrically trained persons
An electrically trained person receives instruction and guidance from an
electrically skilled person in relation to the tasks undertaken and the poten-
tial dangers in the event of inappropriate handling as well as the protective
devices and safety measures. The electrically trained person works exclu-
sively under the guidance and supervision of an electrically skilled person.

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Operator
The operator uses and operates the product in line with this technical file.
The operating company provides the operator with instruction and training
on the specific tasks and the associated potential dangers arising from im-
proper handling.
Technical Service
We strongly recommend having maintenance, repairs and retrofitting carried
out by our Technical Service department. This ensures that all work is per-
formed correctly. If maintenance is not carried out by our Technical Service
department, please ensure that the personnel who carry out the mainte-
nance are trained and authorized by Maschinenfabrik Reinhausen GmbH to
carry out the work.
Authorized personnel
Authorized personnel are trained by Maschinenfabrik Reinhausen GmbH to
carry out special maintenance.
2.5 Personal protective equipment
Personal protective equipment must be worn during work to minimize risks to
health.
▪ Always wear the personal protective equipment required for the job at
hand.
▪ Never wear damaged personal protective equipment.
▪ Observe information about personal protective equipment provided in the
work area.
Personal protective equipment to be worn at all times
Protective clothing
Close-fitting work clothing with a low tearing
strength, with tight sleeves and with no protrud-
ing parts. It mainly serves to protect the wearer
against being caught by moving machine parts.
Safety shoes
To protect against falling heavy objects and slip-
ping on slippery surfaces.

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Special personal protective equipment for particular environments
Safety glasses
To protect the eyes from flying parts and splash-
ing liquids.
Visor
To protect the face from flying parts and splash-
ing liquids or other dangerous substances.
Hard hat
To protect from falling and flying parts and mate-
rials.
Hearing protection
To protect from hearing damage.
Protective gloves
To protect from mechanical, thermal, and electri-
cal hazards.