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1 Introduction

5

7232312/00 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:

«
...
3
4
5
6
7
...
»

Содержание MESSKO MSAFE

Страница 1: ...Buchholz relay MESSKO MSAFE Operating instructions 7232312 00 EN ...

Страница 2: ...uctions 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 Checki...

Страница 3: ...nsulating 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 S...

Страница 4: ...Table of contents 4 7232312 00 EN Glossary 56 ...

Страница 5: ...sen 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 Warnin...

Страница 6: ...R 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 avo...

Страница 7: ...ces Warning of a tipping hazard Warning of a hot surface Table 2 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 ...

Страница 8: ...ents optional 1 Step 1 ð Result of step optional 2 Step 2 ð Result of step optional ð Result 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 Paramet...

Страница 9: ...ank 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...

Страница 10: ...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 accident...

Страница 11: ...llation 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 Messko GmbH Spare parts Spare parts not approved by Messko GmbH may cause physical injury and damage the product Only use spare parts approved by the manufacturer Contact Messko GmbH Wo...

Страница 12: ...oten 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 Operator The operator uses and operates the product in line with this technical docu ment The operating company provides the operator with instruction and training on th...

Страница 13: ...ork 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 Special personal protective equipment f...

Страница 14: ... 14 7232312 00 EN 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 ...

Страница 15: ...vator 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 electrical signaling is realized via a maximum of 4 dry reed magnetic switches N C contact N O contact changeover con tact The Buchholz relay detects the following Gas accumulation in th...

Страница 16: ...ch pipe and triggering a signal The lower float gauge remains unaffected because as of a certain volume the gas flows to the oil conserva tor via the pipe Figure 1 Gas in the Buchholz relay 1 Upper float gauge 2 Lower float gauge 3 Insulating fluid 4 Gas ...

Страница 17: ...ng a con tact in the dry reed magnetic switch pipe and triggering a signal As the fluid level drops further the lower float gauge also lowers activating another con tact in the dry reed magnetic switch pipe and triggering another signal Figure 2 Insufficient insulating fluid 1 Upper float gauge 2 Lower float gauge 3 Insulating fluid ...

Страница 18: ...ecified flow speed towards the oil conservator is exceeded a flap valve moves in the direction of flow activating a contact in the dry reed mag netic switch pipe and triggering a signal Figure 3 Flow speed too high 1 Upper float gauge 2 Lower float gauge 3 Insulating fluid 4 Flap valve ...

Страница 19: ...ters of DN25 DN50 or DN80 The Buchholz relay can be equipped with a maximum of 4 dry reed mag netic switches N C contact N O contact changeover contact which you can connect electrically via the terminal box Figure 4 Buchholz relay 1 Terminal box 2 Cable gland also on the opposite side 3 Grounding screw 4 Marking for mounting position 5 Cover for inspection window op tional 6 Oil drain screw also ...

Страница 20: ...3 Product description 20 7232312 00 EN 7 Flange also on the opposite side 8 Connection for pneumatics testing optional 9 Gas extraction valve 10 Test button with cover sleeve ...

Страница 21: ... of its parts touch the loading surface of the means of transport or touch the ground after unloading Inlays inside the box stabilize the goods preventing prohibited changes in position and protecting them from vibration 4 3 Markings The packaging bears a signature with instructions for safe transport and cor rect storage The following symbols apply to the shipment of non hazardous goods Adherence...

Страница 22: ...cision has been made by the transport company or the insurance company Record the details of the damage on site immediately with the transport company involved This is essential for any claim for damages If possible photograph damage to packaging and packaged goods This also applies to signs of corrosion on the packaged goods due to moisture rain snow condensation infiltrating the packaging Make s...

Страница 23: ...nst moisture rain flooding water from melting snow and ice dirt pests such as rats mice termites etc and against unauthorized access Store crates and boxes on pallets timber beams or planks as protection against ground moisture and for improved ventilation Ensure that the foundation has sufficient load bearing capacity Keep entrance paths clear Check the stored goods at regular intervals Also take...

Страница 24: ...hes 5 1 Checking the pipe flanges The pipe flanges must be flush and clean to allow the Buchholz relay to be positioned with the least possible stress Even slight unevenness on a pipe flange can cause the Buchholz relay flange to be curved too much leading to cracks in the flange caused by the resulting transverse stress Therefore check the following Pipe flanges Flush and even Evenness deviation ...

Страница 25: ... temperatures and operating temperatures The gasket material must be suitable for the prevailing relative humidity on site Elastomer gaskets must occupy a maximum of 80 of the sealing groove when installed The remaining 20 of the groove is required as expansion space 5 3 Fastening the Buchholz relay to the pipe Fasten the Buchholz relay to the pipe taking into consideration the following points Th...

Страница 26: ...d permitted inclination of the Buchholz relay when us ing the Buchholz relay as a protective device for the on load tap changer The distance between the Buchholz relay and the next fastening point of the pipe may not exceed 0 5 m with DN25 0 7 m with DN50 and 1 m with DN80 Otherwise install a fastening point in close proximity to the Buch holz relay To fasten the Buchholz relay on the pipe proceed...

Страница 27: ... 7232312 00 EN 2 Remove the plastic cover on both flanges Figure 6 Plastic cover 3 Remove the cover sleeve from the test button remove the colored plug and reattach the cover sleeve to the test button Figure 7 Plugs ...

Страница 28: ... hand tight and then tighten with max one half turn Figure 8 Locking cap for connection for pneumatics testing 5 If a fixed pipe for gas extraction is not connected to the gas extraction valve Remove the union nut from the gas extraction valve Position the locking cap on the gas extraction valve screw on hand tight and then tighten with max one half turn Figure 9 Locking cap for gas extraction val...

Страница 29: ...e too long Fasten the Buchholz relay onto the pipe using suitable screws nuts and gaskets in such a way that the printed arrow is pointing in the direc tion of the oil conservator direction of insulating fluid flow Only tighten screws by hand Figure 10 Fastening the Buchholz relay to the pipe ...

Страница 30: ... is no gap between the flanges If there is a gap repair the affected pipe flanges or if necessary detach and re weld them so that there is no longer a gap Figure 11 Flanges 8 Tighten the screws crosswise with 30 of the target torque 9 Tighten the screws crosswise with 60 of the target torque 10 NOTICE Damage to the flanges due to a torque that is too high Tighten the screws crosswise with full tar...

Страница 31: ... no longer be turned under the full torque Figure 12 Tighten the screws crosswise 5 4 Electrically connecting the dry reed magnetic switches DANGER Electric shock Risk of fatal injury due to electrical voltage when connecting the device Ensure that all cables are free of voltage during connection work ...

Страница 32: ...inal strip in the terminal box The cables are not included in the scope of delivery 1 Unscrew the screws 3x M6 wrench size 10 on the terminal box and re move the cover 2 Remove the sheathing of the cable strip off approx 7 mm of insulation from the strands and attach ferrules 3 Open the cable gland wrench size 30 and feed the cable through The cable gland is suitable for a cable diameter of 13 20 ...

Страница 33: ...iagram can also be found on the inside of the terminal box cover Figure 13 Connection diagram 1 N C contacts 2 N O contacts 3 Changeover contacts 5 Tighten the cable gland wrench size 30 torque 6 7 Nm 6 Position the cover on the terminal box and screw tight 3x M6 wrench size 10 torque 2 Nm ...

Страница 34: ...232312 00 EN 7 Ground the Buchholz relay using the grounding cable with ring type cable lug grounding screw M6 wrench size 10 torque 6 Nm The aluminum side of the CUPAL washer must be facing the Buchholz relay housing ...

Страница 35: ...g caused by the build up of static charge electrical devices in the immediate surroundings and that none occur Do not breath in any gas released ü The pipes are filled with insulating fluid ü The stop valve to the oil conservator is open 1 Remove the locking cap open end wrench wrench size 14 2 Open the gas extraction valve 3 Close the gas extraction valve as soon as insulating fluid begins to es ...

Страница 36: ...s test simulates the loss of insulating fluid Test without reset function ü The pipes are filled with insulating fluid 1 Remove the test button cover sleeve open end wrench wrench size 24 2 Press the test button down and release ð The upper and lower float gauges are pressed down and the dry reed magnetic switches of both float gauges issue a signal ð The float gauges return to their starting posi...

Страница 37: ...Check the position of the float gauge via the in spection window 4 Fasten the cover sleeve onto the test button open end wrench wrench size 24 torque 5 Nm ð The test is complete 6 3 2 Gas accumulation in the insulating fluid This test simulates the accumulation of gas in the upper part of the Buchholz relay ü The Buchholz relay is equipped with the connection for pneumatics test ing ü The pipes ar...

Страница 38: ...cted to the gas cylinder are connected correctly and tightly sealed 3 Introduce nitrogen or compressed air into the Buchholz relay with a pres sure of 6 5 8 bar in pulses by briefly opening and immediately closing the valve again until the flap valve falls ð The lower float gauge coupled with the flap valve lowers and the dry reed magnetic switch issues a signal 4 Release the gas via the gas extra...

Страница 39: ...heck the transformer condition Loss of insulat ing fluid Con tacts S2 and S4 optional and S1 and S3 optional have switched Check the in sulating fluid level via in spection win dows The trans former may have been dis connected via contacts S1 and S3 op tional Insulating fluid flow speed too high The flap valve has been actuated The trans former may have been dis connected via contacts S1 and S3 op...

Страница 40: ...eed is too high In these cases you have to release the flap valve manually 1 Remove the test button cover sleeve open end wrench wrench size 24 2 Turn the test button counterclockwise to the stop ð The flap valve is released and returns to its starting position 3 Check flap valve position via inspection window 4 Fasten the cover sleeve onto the test button open end wrench wrench size 24 torque 5 N...

Страница 41: ...2 Vent the device Section 6 1 Page 35 3 Check the tightness of the flange connection Section 6 2 Page 35 4 Check that the device is functioning correctly Section 6 3 Page 36 In the event of questions or irregularities contact Technical Service Maschinenfabrik Reinhausen GmbH MR Service Complaint Falkensteinstrasse 8 93059 Regensburg Germany E mail service reinhausen com or complaint reinhausen com...

Страница 42: ...9 Disposal 42 7232312 00 EN Observe the national disposal regulations in the country of use ...

Страница 43: ...ve insulating flu ids on request Degree of protection IP55 in accordance with DIN EN 60 529 Weight including terminal box Approx 7 kg Nominal diameter of the pipe flange version DN25 DN50 DN80 or G 1 thread connection Flap valve triggering pressure mineral insulating oil DN25 1 m s 1 2 m s 1 3 m s 1 5 m s 2 m s or 2 5 m s each 15 DN50 1 m s 1 3 m s 1 5 m s or 2 m s each 15 DN80 1 m s 1 3 m s 1 5 m...

Страница 44: ...hing capacity N C contact 1 2 W 250 W N O contact 1 2 W 250 W Changeover contact 1 2 W 150 W Rated insulation voltage 2 7 kV AC 2 s contacts to housing 1 kV AC 2 s open contacts Insulation resistance 1000 MΩ 500 V DC Terminal box Connection terminals Min 0 25 mm2 max 4 mm2 Cable gland M25x1 5 for cable Ø 13 20 mm or NPT Insulating fluid Unused oils of mineral origin in accordance with IEC 60296 AS...

Страница 45: ...11 Drawings 45 7232312 00 EN ...

Страница 46: ...1 107 4 21 MBR25 G SED_7264657_000 0x Ø25 0 98 G1 1 2 14 5 0 57 185 7 28 244 9 61 107 4 21 MBR50 6 4 SED_7274429_000_0x Ø50 1 97 Ø140 5 51 Ø110 4 33 Ø90 3 54 4x 14 0 55 19 0 75 185 7 28 244 9 61 95 3 74 MBR50 16 4 SED_7274429_000_0x Ø50 1 97 Ø165 6 50 Ø125 4 92 Ø102 4 02 4x 18 0 71 19 0 75 195 7 68 244 9 61 95 3 74 MBR50 6 6 SED_7275602_000_0x Ø50 1 97 Ø140 5 51 Ø110 4 33 Ø140 5 51 6x 12 0 47 14 0...

Страница 47: ...TED SHEET MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 d1 d4 d2 I1...

Страница 48: ...D SHEET MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 543 h2 l1 f d1 d4 G...

Страница 49: ...ED SHEET MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 d1 d4 d2 I1 ...

Страница 50: ...EET MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 I1 d1 d2 d4 h1 16...

Страница 51: ...HEET MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 d4 d1 d2 f l1 16...

Страница 52: ...EET MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 I1 d1 d2 d4 f 165...

Страница 53: ... MATERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 I1 d1 d4 d2 h1 165 6...

Страница 54: ...TERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 l1 f d1 h1 163 6 43 144...

Страница 55: ...TERIAL NUMBER SERIAL NUMBER MASCHINENFABRIK REINHAUSEN GMBH 2020 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN 90 3 54 h2 l1 d1 h1 144 5 69 9 0 1...

Страница 56: ...ce is installed Insulating fluid temperature Cold start temperature in accordance with IEC 60296 30 C Operating temperature The device is installed on the equip ment in accordance with the specifica tions in these operating instructions and is in operation together with the equip ment taking the ambient influences into consideration ...

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Страница 60: ...rbegebiet An den Drei Hasen Messko Platz 1 61440 Oberursel Germany 49 0 6171 6398 0 messko info reinhausen com www reinhausen com messko 7232312 00 EN MESSKO MSAFE F0384900 02 21 Messko GmbH 2021 THE POWER BEHIND POWER ...

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