MR MESSKO MPREC Manuel utilisateur
Pressure relief device
MESSKO® MPREC®
Operating instructions
5789879/04 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
35789879/04 EN
1 Introduction...........................................................................6
1.1 Manufacturer.................................................................................... 6
1.2 Subject to change without notice ..................................................... 6
1.3 Completeness.................................................................................. 6
1.4 Safekeeping..................................................................................... 6
1.5 Notation conventions ....................................................................... 7
1.5.1 Hazard communication system .................................................................... 7
1.5.2 Information system....................................................................................... 8
1.5.3 Instruction system ........................................................................................ 8
1.5.4 Typographic conventions ............................................................................. 9
2 Safety...................................................................................10
2.1 Intended use .................................................................................. 10
2.2 Fundamental safety instructions .................................................... 11
2.3 Personnel qualification................................................................... 13
2.4 Personal protective equipment ...................................................... 14
3 Product description............................................................15
3.1 Scope of delivery ........................................................................... 15
3.2 Function description....................................................................... 15
3.3 Design/versions ............................................................................. 16
3.3.1 Pressure relief device with standard protective cover................................ 17
3.3.2 Pressure relief device with OD protective cover ........................................ 18
3.4 Safety markings and nameplate .................................................... 19
4 Packaging, transport and storage ....................................21
4.1 Purpose ......................................................................................... 21
4.2 Suitability, structure and production............................................... 21
4.3 Markings ........................................................................................ 21
4.4 Transportation, receipt and handling of shipments........................ 21
Table of contents
4 5789879/04 EN
4.5 Storage of shipments..................................................................... 23
4.6 Further transport ............................................................................ 23
5 Mounting .............................................................................24
5.1 Mounting pressure relief device with standard protective cover .... 27
5.2 Mounting pressure relief device with OD protective cover............. 30
5.3 Electrically connecting the pressure relief device .......................... 35
5.3.1 Connecting cable screw connections......................................................... 36
5.3.2 Connecting the cable to the terminal box................................................... 38
5.3.3 Connecting the plug connector (ANSI or Westinghouse)........................... 39
6 Commissioning...................................................................42
7 Operation.............................................................................44
7.1 Pressure relief device operating state ........................................... 44
7.2 Venting the pressure relief device ................................................. 45
8 Maintenance and inspection .............................................47
9 Fault elimination .................................................................48
9.1 Testing the tripping circuit and reason for tripping......................... 48
10 Disposal...............................................................................49
10.1 SVHC information in accordance with the REACH regulation....... 49
11 Technical data.....................................................................50
12 Drawings .............................................................................55
12.1 7257026......................................................................................... 56
12.2 7266672......................................................................................... 57
12.3 7267429......................................................................................... 60
12.4 7266974......................................................................................... 62
12.5 8235729......................................................................................... 65
1 Introduction
6 5789879/04 EN
This technical document contains detailed descriptions on the safe and
proper installation, connection, commissioning and monitoring of the prod-
uct.
This technical document is intended solely for specially trained and autho-
rized personnel.
1.1 Manufacturer
Maschinenfabrik Reinhausen GmbH
Falkensteinstrasse 8
93059 Regensburg
Germany
Tel.: +49 941 4090-0
E-mail: [email protected]
Internet: www.reinhausen.com
MR Reinhausen customer portal: https://portal.reinhausen.com
Further information on the product and copies of this technical file are avail-
able from this address if required.
1.2 Subject to change without notice
The information contained in this technical file comprises the technical speci-
fications approved at the time of printing. Significant modifications will be in-
cluded in a new edition of the technical file.
The document number and version number of this technical file are shown in
the footer.
1.3 Completeness
This technical document is incomplete without the supporting documents.
The following documents apply to this product:
▪ Operating instructions
▪ Test certificate
1.4 Safekeeping
Keep this technical file and all supporting documents ready at hand and ac-
cessible for future use at all times.
1 Introduction
75789879/04 EN
1.5 Notation conventions
This section contains an overview of the symbols and textual emphasis
used.
1.5.1 Hazard communication system
Warnings in this technical file are displayed as follows.
1.5.1.1 Warning relating to section
Warnings relating to sections refer to entire chapters or sections, sub-sec-
tions or several paragraphs within this technical document. Warnings relat-
ing to sections have the following format:
WARNING
Type of danger!
Source of the danger and its consequences.
► Action
► Action
1.5.1.2 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.
1.5.1.3 Signal words
Depending on the product, the following signal words are used:
Signal word Meaning
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.
1 Introduction
8 5789879/04 EN
Signal word Meaning
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.
Table1: Signal words in warning notices
1.5.2 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.
1.5.3 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:
Aim of action
üRequirements (optional).
1. Step 1.
ðResult of step (optional).
1 Introduction
95789879/04 EN
2. Step 2.
ðResult of step (optional).
ðResult of action (optional).
1.5.4 Typographic conventions
Typographic convention Purpose Example
UPPERCASE Operating controls,
switches
ON/OFF
[Brackets] PC keyboard [Ctrl] + [Alt]
Bold Software operating con-
trols
Press Continue button
…>…>… Menu paths Parameter > Control pa-
rameter
Italics System messages, error
messages, signals
Function monitoring alarm
triggered
[► Number of pages] Cross reference [► Page41].
Dotted underscore
.............................................
Glossary entry, abbrevia-
tions, definitions, etc.
Glossary entry
........................
Table2: Typographic conventions used in this technical file
2 Safety
10 5789879/04 EN
This technical document contains detailed descriptions on the safe and
proper installation, connection, commissioning and monitoring of the prod-
uct.
▪ Read this technical document through carefully to familiarize yourself with
the product.
▪ This technical document 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 document in order to avoid func-
tion-related dangers.
▪ The product is manufactured on the basis of state-of-the-art technology.
Nevertheless, risks to life and limb of the user or impairment of the prod-
uct and other material assets may occur during use due to function-re-
lated dangers.
2.1 Intended use
The pressure relief device protects transformers and on-load tap-changers
against impermissible pressure increases. At a predetermined pressure, the
pressure relief device opens, relieves the pressure and closes tightly again
once the pressure has dropped.
The product is designed solely for use in stationary large-scale systems.
If used as intended and in compliance with the requirements and conditions
specified in this technical file as well as the warning notices in this technical
file and attached to the product, then the product does not present any dan-
ger to people, property or the environment. This applies throughout the ser-
vice life of the product, from delivery, installation and operation to removal
and disposal.
The following is considered intended use:
▪ Only use the product for the transformer type specified in the order and
the associated operating data.
▪ You will find the standard valid for the product and the year of issue on the
nameplate.
▪ Operate the product in accordance with this technical documentation, the
agreed-upon delivery conditions and the technical data.
▪ Ensure that all necessary work is performed by qualified personnel only.
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