MR MESSKO MSAFE Manuale utente
Buchholz relay
MESSKO® MSAFE
Operating instructions
7232312/00 EN
Table of contents
2 7232312/00 EN
1 Introduction...........................................................................5
1.1 Manufacturer.................................................................................... 5
1.2 Safekeeping..................................................................................... 5
1.3 Notation conventions ....................................................................... 5
1.3.1 Hazard communication system .................................................................... 5
1.3.2 Information system....................................................................................... 7
1.3.3 Instruction system ........................................................................................ 7
1.3.4 Typographic conventions ............................................................................. 8
2 Safety.....................................................................................9
2.1 Intended use .................................................................................... 9
2.2 Fundamental safety instructions .................................................... 10
2.3 Personnel qualification................................................................... 11
2.4 Personal protective equipment ...................................................... 13
3 Product description............................................................15
3.1 Scope of delivery ........................................................................... 15
3.2 Function description....................................................................... 15
3.3 Design/versions ............................................................................. 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
4.5 Storage of shipments..................................................................... 23
5 Mounting .............................................................................24
5.1 Checking the pipe flanges ............................................................. 24
5.2 Gasket requirements ..................................................................... 25
5.3 Fastening the Buchholz relay to the pipe....................................... 25
Table of contents
37232312/00 EN
5.4 Electrically connecting the dry-reed magnetic switches ................ 31
6 Commissioning...................................................................35
6.1 Venting the Buchholz relay ............................................................ 35
6.2 Leak test ........................................................................................ 35
6.3 Function tests ................................................................................ 36
6.3.1 Loss of insulating fluid................................................................................ 36
6.3.2 Gas accumulation in the insulating fluid..................................................... 37
6.3.3 Insulating fluid flow speed too high ............................................................ 38
7 Operation.............................................................................39
7.1 Alarm table..................................................................................... 39
7.2 Releasing blocked flap valve ......................................................... 40
8 Maintenance and inspection .............................................41
8.1 Draining the insulation fluid............................................................ 41
9 Disposal...............................................................................42
10 Technical data.....................................................................43
11 Drawings .............................................................................45
11.1 SED_7286610 ............................................................................... 46
11.2 SED_7265391 ............................................................................... 47
11.3 SED_7264657 ............................................................................... 48
11.4 SED_7274429 ............................................................................... 49
11.5 SED_7275602 ............................................................................... 50
11.6 SED_7286211 ............................................................................... 51
11.7 SED_7283480 ............................................................................... 52
11.8 SED_7280977 ............................................................................... 53
11.9 SED_7283859 ............................................................................... 54
11.10 SED_7284134 ............................................................................... 55
1 Introduction
57232312/00 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
The product is manufactured by:
Messko GmbH
Gewerbegebiet An den Drei Hasen
Messko-Platz 1
61440 Oberursel
Germany
Phone: +49 6171 6398-0
E-mail: [email protected]
Internet: www.reinhausen.com/messko
Further information on the product and copies of this technical document are
available from this address if required.
1.2 Safekeeping
Keep this technical file and all supporting documents ready at hand and ac-
cessible for future use at all times.
1.3 Notation conventions
This section contains an overview of the symbols and textual emphasis
used.
1.3.1 Hazard communication system
Warnings in this technical file are displayed as follows.
1.3.1.1 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:
1 Introduction
6 7232312/00 EN
WARNING
Type of danger!
Source of the danger and its consequences.
► Action
► Action
1.3.1.2 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.
1.3.1.3 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.
Table1: Signal words in warning notices
1 Introduction
77232312/00 EN
Pictograms warn of dangers:
Pictogram Definition
Warning of a danger point
Warning of dangerous electrical voltage
Warning of combustible substances
Warning of a tipping hazard
Warning of a hot surface
Table2: Pictograms used in warning notices
1.3.2 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.
1.3.3 Instruction system
This technical file contains single-step and multi-step instructions.
1 Introduction
8 7232312/00 EN
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).
2. Step 2.
ðResult of step (optional).
ðResult of action (optional).
1.3.4 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 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 [► 41].
Table3: Typographic conventions
2 Safety
97232312/00 EN
This technical document contains detailed descriptions on the safe and
proper installation, connection, commissioning 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 Intended use
The Buchholz relay is a protective device for on-load tap-changers, trans-
formers and reactors with an oil conservator. The Buchholz relay is installed
in the pipe between the transformer tank and oil conservator on the trans-
former and/or between the on-load tap-changer head and oil conservator on
the on-load tap-changer.
The product is designed solely for use in electrical energy systems and facili-
ties. If used as intended and in compliance with the requirements and condi-
tions specified in this technical document as well as the warning notices con-
tained in this technical document and attached to the product, the product
does not pose risk of personal injury or damage to property or the environ-
ment. This applies throughout the entire service life of the product, from de-
livery, installation and operation to removal and disposal.
Intended use refers to the following:
▪ Use the product only with the transformer specified in the order.
▪ Operate the product in accordance with this technical document, the
agreed-upon delivery conditions and the technical data.
▪ Ensure that any necessary work is only performed by qualified personnel.
▪ Use the equipment and special tools supplied solely for the intended pur-
pose and in accordance with the specifications of this technical document.
2 Safety
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2.2 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 results in danger to life and limb.
▪ All necessary devices and personal protective equipment required for the
specific task, such as a hard hat, safety footwear, etc. must be worn. Ob-
serve the "Personal protective equipment" [►Section 2.4, Page 13] sec-
tion.
▪ 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.
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.
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