MR VACUTAP VR Series Installation And Commissioning Instructions
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MR VACUTAP VR Series Installation And Commissioning Instructions

On-load tap-changer
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On-load tap-changer
®
VACUTAP
VR I II III-Ex
Installation and commissioning instructions
5292950/01 EN

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  • Page 1 On-load tap-changer ® VACUTAP VR I II III-Ex Installation and commissioning instructions 5292950/01 EN...
  • Page 2 © 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.

  • Page 3: Table Of Contents

    Table of contents Table of contents Introduction.........................  7 Manufacturer............................ 7 Completeness.............................  7 Safekeeping............................ 7 Notation conventions ..........................  7 1.4.1 Hazard communication system .......................... 7 1.4.2 Information system.............................. 9 1.4.3 Instruction system .............................. 9 Safety.......................... 11 Appropriate use .......................... 11 Inappropriate use.......................... 12 Fundamental safety instructions .......................  12 Standards and regulations........................
  • Page 4 Table of contents Packaging, transport and storage ..................  37 Packaging ............................ 37 4.1.1 Suitability................................ 37 4.1.2 Markings................................ 38 Transportation, receipt and handling of shipments................ 38 Storage of shipments........................ 39 Unpacking shipments and checking for transportation damages .............  40 Mounting ...........................  41 Installation information........................ 41 Preparatory work ..........................
  • Page 5 Table of contents 5.5.3 Fitting motor-drive unit ............................ 159 5.5.4 Fitting drive shaft............................... 159 5.5.5 Centering on-load tap-changer and motor-drive unit .................. 183 5.5.6 Making the electrical connections for the motor-drive unit ................ 183 Commissioning.......................  184 Commissioning the on-load tap-changer at the transformer manufacturer's site ...... 184 6.1.1 Bleeding on-load tap-changer head and suction pipe.................. 184 6.1.2...
  • Page 6 Table of contents VACUTAP® VRG-Ex, installation drawing (899945) .............. 208 VACUTAP® VRC/VRE-Ex, installation position of tap selector connection contacts (727042) .. 209 VACUTAP® VRD/VRF/VRG-Ex, fine tap selector connection contact and change-over selector connection contact (899941) ...................... 210 VACUTAP® VR-Ex, special design for bell-type tank installation (720781) ........ 211 VACUTAP®...

  • Page 7: Introduction

    1 Introduction 1 Introduction This technical file contains detailed descriptions of the safe and proper in- stallation, connection, and commissioning of the product. It also includes safety instructions and general information about the prod- uct. Information about operation can be found in the operating instructions. This technical file is intended solely for specially trained and authorized per- sonnel.
  • Page 8 1 Introduction 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: Type of danger! WARNING Source of the danger and outcome. ►...

  • Page 9: Information System

    1 Introduction 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.
  • Page 10 1 Introduction Aim of action ü Requirements (optional). 1. Step 1. ð Result of step (optional). 2. Step 2. ð Result of step (optional). ð Result of action (optional). ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 11: Safety

    2 Safety 2 Safety ▪ Read this technical file through 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. ▪ Read and observe the warnings in this technical file in order to avoid func- tion-related dangers.

  • Page 12: Inappropriate Use

    2 Safety In the standard version, the on-load tap-changer is designed for sinusoidal 50/60 Hz alternating current with a curve form symmetrical to the zero axis and can switch 1.5 times the rated through-current I at its rated step voltage Exceeding the rated step voltage U for a short period by up to 10% is per- mitted if the rated through-current I...
  • Page 13 2 Safety 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.

  • Page 14: Standards And Regulations

    2 Safety ▪ It is imperative that you consult with Maschinenfabrik Reinhausen GmbH because specific operating conditions apply to alternative insulating fluids. ▪ Only use conductive and grounded hoses, pipes, and pump equipment that are approved for flammable liquids. ▪ Only use lubricants and auxiliary materials approved by the manufacturer. ▪...
  • Page 15 2 Safety Equipment groups (number 2) Equipment in this category is intended for use in underground parts of mines as well as those parts of surface installations of such mines endangered by firedamp and/or combustible dust. Equipment in this category is intended for use in other areas in which explosive atmospheres may be present.

  • Page 16: Standards And Regulations

    2 Safety Explosion group (number 6) EN/IEC Gases, vapors (examples) Min. ignition energy (mJ) Ammonia Acetic acid, acetone, benzene, diesel, 0.18 ethane, ether, fuel oil, hexane, meth- ane, petrol, petroleum, propane Ethylene, isoprene, town gas 0.06 Acetylene, carbon disulfide, hydrogen 0.02 Table 7: Explosion groups Temperature classes (number 7)

  • Page 17: Measures For Ensuring Compliance With Explosion Protection Requirements

    2 Safety 2.5 Measures for ensuring compliance with explosion protection requirements 2.5.1 Measures taken by the manufacturer Maschinenfabrik Reinhausen has taken the following measures for ensuring compliance with explosion protection requirements. You do not need to take any special measures in this regard. 2.5.1.1 Quality of the insulating oil in the on-load tap-changer The quality of the insulating oil required by IEC 60296 and the quality of the synthetic esters required by IEC 61099 in the oil compartment of the on-load...
  • Page 18 2 Safety 2.5.2.2 Setting up the on-load tap-changer oil system Operate the on-load tap-changer only with a suitable oil system. This di- verter switch oil system consists of the diverter switch oil compartment, pro- tective relay, and oil conservator of the on-load tap-changer. It ensures that enough insulating oil is present in the diverter switch oil compartment at all times.
  • Page 19 2 Safety 2.5.2.3.1 Dehydrating breather The oil conservator must be equipped with a dehydrating breather in accor- dance with VDE 0532-216-5 with downward-leading outlet and a protection degree of at least IP66 in accordance with IEC 60529. 2.5.2.3.2 Level indicator The oil conservator must have a level indicator from which the minimum oil quantity required and the maximum quantity permitted, as well as the current oil level, can be read.

  • Page 20: Personnel Qualification

    2 Safety 2.5.2.4 Corrosion protection measures Because further installation steps are required before operation of the on- load tap-changer, sufficient corrosion protection cannot be provided at cer- tain interfaces to the transformer when the device leaves the factory. Figure 2: On-load tap-changer head 1 Sealing surface on piping connec- 3 Contact surface on on-load tap- tion flange...
  • Page 21 2 Safety 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: ▪...

  • Page 22: Personal Protective Equipment

    2 Safety 2.7 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.

  • Page 23: Product Description

    3 Product description 3 Product description 3.1 Scope of delivery The product is packaged with protection against moisture and is usually de- livered as follows: ▪ Oil compartment with on-load tap-changer head and built-in diverter switch insert ▪ Selector ▪ Ex motor-drive unit ▪...

  • Page 24: Setup/Models

    3 Product description Figure 3: System overview of on-load tap-changer, transformer 1 Transformer tank 6 Upper gear unit 2 Motor-drive unit 7 On-load tap-changer 3 Vertical drive shaft 8 Protective relay 4 Bevel gear 9 Oil conservator 5 Horizontal drive shaft 10 Active part of the transformer 3.2.2 Setup/models The following drawing shows the main components of the on-load tap-...
  • Page 25 3 Product description You will find a detailed drawing of the on-load tap-changer in the "Drawings [►Section 9, Page 206]" section. Figure 4: VACUTAP® VRC/VRE 1 On-load tap-changer head 3 Tap selector 2 Oil compartment 4 Change-over selector ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 26 3 Product description Figure 5: VACUTAP® VRD/VRF 1 On-load tap-changer head 3 Tap selector 2 Oil compartment 4 Change-over selector ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 27 3 Product description Figure 6: VACUTAP® VRG 1 On-load tap-changer head 3 Tap selector 2 Oil compartment 4 Change-over selector 3.2.2.1 Pipe connections The on-load tap-changer head features 4 pipe connections for different pur- poses. ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 28 3 Product description Depending on the order, some or all of these pipe connections are fitted with pipe bends ex factory. All pipe bends can be freely swiveled once the pres- sure ring is loosened. Figure 7: Pipe connections with pipe bends Pipe connection Q The pipe connection Q is closed with a blank cover.

  • Page 29: Nameplate And Serial Number

    3 Product description 3.2.3 Nameplate and serial number The nameplate with serial number is on the on-load tap-changer head cover. Figure 8: Nameplate 3.2.4 Protective devices The on-load tap-changer is equipped with the following protective devices. 3.2.4.1 Protective relay 3.2.4.1.1 Function description The protective relay is looped into the circuit breaker tripping circuit, thus protecting the on-load tap-changer and transformer in the event of a fault within the on-load tap-changer oil compartment.
  • Page 30 3 Product description 3.2.4.1.2 Setup/versions Front view Figure 9: RS 2001-Ex 1 Inspection window 2 Pressure equalization element Rear view Figure 10: RS 2001-Ex 1 Ground connection 2 Nameplate ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 31 3 Product description View from above Figure 11: RS 2001-Ex 1 Gasket 2 Potential tie-in 3 Terminal box cover 4 Slotted head screw for potential tie-in 5 OPERATION (reset) test button 6 Slotted head screw for protective cover 7 OFF (test tripping) test button 8 Protective conductor connection 9 Protective cover 10 Dummy plug...

  • Page 32: Drive Shaft

    3 Product description 3.2.4.2 Rupture disk The rupture disk is a pressure relief device without signaling contact in ac- cordance with IEC 60214-1 and is located in the on-load tap-changer head cover. The rupture disk responds to a defined overpressure in the oil compartment of the on-load tap-changer.
  • Page 33 3 Product description The explosion-proof drive shaft consists of a square tube with insulator and is coupled by two coupling brackets and one coupling bolt at both ends to the drive or driven shaft end of the device to be connected. Figure 13: Explosion-proof drive shaft with insulator ®...

  • Page 34: Design/Model

    3 Product description 3.3.2 Design/Model The design of the explosion-proof drive shaft is described in this section. Figure 14: Components of the explosion-proof drive shaft 1 Bevel gear 2 Hose clip 3 Screws 4 Telescopic protective tube 5 Coupling bracket 6 Insulator 7 Double coupling bracket 8 Square tube 9 Pin...
  • Page 35 3 Product description Configuration V 1 min Intermediate bearing Middle of hand crank – middle of 706 mm If the maximum value of bevel gear (maximum permissible 2472 mm is exceeded, the axial offset 2°) use of an intermediate bearing is necessary. V 1 ≤ 2472 mm (without in- termediate bearing) V 1 >...

  • Page 36: Identification Plate

    3 Product description 3.3.3 Identification plate The identification plate is on the telescopic protective tube. Figure 15: Position of the identification plate ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 37: Packaging, Transport And Storage

    4 Packaging, transport and storage 4 Packaging, transport and storage 4.1 Packaging The products are sometimes supplied with sealed packaging and sometimes in a dry state, depending on requirements. Sealed packaging surrounds the packaged goods with plastic foil on all sides.

  • Page 38: Markings

    4 Packaging, transport and storage 4.1.2 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 to these symbols is mandatory. Protect against Fragile Attach lifting Center of mass moisture...

  • Page 39: Storage Of Shipments

    4 Packaging, transport and storage Visible damage If external transport damage is found upon receipt of the shipment, proceed as follows: ▪ Immediately record the identified transport damage in the shipping docu- ments and have this countersigned by the carrier. ▪...

  • Page 40: Unpacking Shipments And Checking For Transportation Damages

    4 Packaging, transport and storage When selecting and setting up the storage location, ensure the following: ▪ Protect stored goods against moisture (flooding, water from melting snow and ice), dirt, pests such as rats, mice, termites and so on, and against unauthorized access.

  • Page 41: Mounting

    5 Mounting 5 Mounting This chapter describes how to correctly install and connect the device. DANGER Danger of explosion! Death or serious injury may result from installing the on-load tap-changer in an environment at risk of explosion and from installation on an energized transformer! ►...

  • Page 42: Preparatory Work

    5 Mounting 9. Apply suitable corrosion protection to cut edges of the drive shaft's protec- tive cover. 10. Seal joins after installation, e.g. by painting over them. You will find more information about surface treatment and detailed informa- tion about repairing damage to the protective layer in the repair instructions. These are available from Maschinenfabrik Reinhausen GmbH's Technical Service department on request.

  • Page 43: Installing The On-Load Tap-Changer In The Transformer (Standard Version)

    5 Mounting 2. Fit stud bolts on mounting flange. Figure 17: Tracing template, stud bolts 5.3 Installing the on-load tap-changer in the transformer (standard version) 5.3.1 Fastening on-load tap-changer to transformer cover 5.3.1.1 Fastening oil compartment on transformer cover  CAUTION!  An unstably positioned oil compartment may tip over, re- sulting in injuries or property damage.
  • Page 44 5 Mounting 3. Clean sealing surfaces on mounting flange and on-load tap-changer head, place oil-resistant gasket on mounting flange. Figure 18: Sealing surfaces, gasket ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 45 5 Mounting NOTICE!  Lowering the oil compartment without due care can result in the oil compartment colliding with the transformer cover and becoming dam- aged. Lift the oil compartment by hooking up the on-load tap-changer head and carefully lower it vertically into the opening of the transformer cover.
  • Page 46 5 Mounting 6. Screw the on-load tap-changer head to the mounting flange. Figure 20: On-load tap-changer head with mounting flange 7. Remove the blocking device from the coupling of the oil compartment base. Figure 21: VACUTAP® VRC/VRE, blocking strip ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 47 5 Mounting Figure 22: VACUTAP® VRD/VRF, blocking plate and shackle Figure 23: VACUTAP® VRG, blocking plate and shackle ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 48 5 Mounting 5.3.1.2 Securing tap selector on oil compartment of the on-load tap-changer VRC/VRE  CAUTION!  An unstably positioned selector may tip, resulting in in- juries or property damage. Place the selector on a level surface and se- cure it against tipping. 2.
  • Page 49 5 Mounting 5. Place the selector on the lifting device. The weight of the selector is a maximum of 165 kg (multiple coarse change-over selector max. 280 kg). NOTICE!  Lifting the selector without due care can result in the selector and oil compartment colliding and becoming damaged. Carefully lift the selector below the oil compartment, ensuring that the tap-selector con- necting leads and potential connection unit (if installed) are free when lift- ing the selector onto the oil compartment, and that they do not touch the...
  • Page 50 5 Mounting NOTICE!  Incorrect tightening torques and unsecured screw connections can lead to damage to the on-load tap-changer. Screw the tap-selector connecting leads to connecting piece with care. Comply with the specified tightening torque, secure screw connections and snap the screening caps in place over the screw heads.
  • Page 51 5 Mounting 3. Remove plastic bag with fastening materials from the selector and keep it ready. Figure 29: Plastic bag with fastening materials 4. Remove the blocking strip from the selector coupling. Once the blocking strip is removed, the selector coupling may no longer be turned. Figure 30: Blocking strip 5.
  • Page 52 5 Mounting 6. Remove the ring nuts from the selector. Figure 31: Ring nut NOTICE!  Lifting the selector without due care can result in the selector and oil compartment colliding and becoming damaged. Carefully lift the selector below the oil compartment, ensuring that the tap-selector con- necting leads and potential connection unit (if installed) are free when lift- ing the selector onto the oil compartment, and that they do not touch the compartment.
  • Page 53 5 Mounting NOTICE!  Incorrect tightening torques and unsecured screw connections can lead to damage to the on-load tap-changer. Screw the tap-selector connecting leads to connecting piece with care. Comply with the speci- fied tightening torque, secure screw connections and snap the screening caps in place over the screw heads.
  • Page 54 5 Mounting 3. Remove plastic bag with fastening materials from the selector and keep it ready. Figure 35: Plastic bag with fastening materials 4. Remove the blocking strip from the selector coupling. Once the blocking strip is removed, the selector coupling may no longer be turned. Figure 36: Blocking strip 5.
  • Page 55 5 Mounting 6. Remove the ring nuts from the selector. Figure 37: Ring nut NOTICE!  Lifting the selector without due care can result in the selector and oil compartment colliding and becoming damaged. Carefully lift the selector below the oil compartment, ensuring that the tap-selector con- necting leads and potential connection unit (if installed) are free when lift- ing the selector onto the oil compartment, and that they do not touch the compartment.
  • Page 56 5 Mounting NOTICE!  Incorrect tightening torques and unsecured screw connections can lead to damage to the on-load tap-changer. Screw the tap-selector connecting leads to connecting piece with care. Comply with the speci- fied tightening torque, secure screw connections and snap the screening caps in place over the screw heads.

  • Page 57: Connecting The Tap Winding And On-Load Tap-Changer Take-Off Lead

    5 Mounting 2. Attach screening caps to screw connection. Figure 41: Connecting piece Figure 42: Ring segment 5.3.2 Connecting the tap winding and on-load tap-changer take-off lead NOTICE Damage to the on-load tap-changer! Connecting leads that place mechanical strain on the on-load tap-changer will damage the on-load tap-changer.
  • Page 58 5 Mounting The tap winding and on-load tap-changer take-off lead must be connected in accordance with the connection diagram included with the delivery. 5.3.2.1 VRC/VRE tap selector connection contacts The tap selector connection contacts are provided with a through-hole for M10 screws.
  • Page 59 2. Please pay attention to the dimensional drawing on which the order is based. Figure 44: Paper insulation 1 Connection from MR already has 3 p Connections to be insulated mm of paper insulation ® Maschinenfabrik Reinhausen GmbH 2020...
  • Page 60 5 Mounting 5.3.2.3 Change-over selector connection contacts for reversing change-over selector connection VRC/VRE NOTICE Damage to the on-load tap-changer! Tap-winding connecting leads situated too closely to the change-over selec- tor's moving parts block the change-over selector and therefore result in damage to the on-load tap-changer.
  • Page 61 5 Mounting Figure 46: Change-over selector connection contacts for reversing change-over selector con- nection (top view) 5.3.2.4 Change-over selector connection contacts for coarse tap selector connection VRC/VRE Damage to the on-load tap-changer! NOTICE Tap-winding connecting leads situated too closely to the change-over selec- tor's moving parts block the change-over selector and therefore result in damage to the on-load tap-changer.
  • Page 62 5 Mounting Close the screening caps and make sure they are seated correctly. The screw head and nut must be fully covered. Figure 47: Change-over selector connection contacts for coarse tap selector connection Figure 48: Change-over selector connection contacts for coarse tap selector connection (top view) ®...
  • Page 63 5 Mounting 5.3.2.5 VRD/VRF tap selector connection contacts The selector connection contacts have a through-hole for M12 screws. The screening caps are supplied separately. Figure 49: Selector connection contacts 5.3.2.6 Change-over selector connection contacts for reversing change-over selector connection VRD/VRF The (+) and (-) change-over selector connection contacts are designed like fine tap selector connection contacts for reversing change-over selector con- nections.
  • Page 64 5 Mounting 5.3.2.7 Change-over selector connection contacts for coarse tap selector connection VRD/VRF For coarse tap selector connection, the (0) and (–) change-over selector connection contacts are designed like the fine tap selector connection con- tacts. The change-over selector connection contacts (+) are produced as ter- minal lugs of the crimped connecting lead (+/K) with a through-hole for M12 screws.
  • Page 65 5 Mounting Every connection point must be covered by a screening cap. The screening caps are designed for lateral connection with a straight cable shoe or for front connection with an angled cable shoe. Figure 52: Tap selector connection contacts and change-over selector connection contacts Each screening cap is attached with a steel angle piece and 2 screws.
  • Page 66 5 Mounting 5.3.2.11 Connecting on-load tap-changer take-off lead There are through-holes 13 mm in diameter at several points in the take-off ring of the oil compartment for connecting the on-load tap-changer take-off lead. To connect the on-load tap-changer take-off lead, proceed as follows: 1.

  • Page 67: Performing Transformer Ratio Test Before Drying

    5 Mounting Figure 55: Connecting on-load tap-changer take-off lead 5.3.3 Performing transformer ratio test before drying NOTICE Damage to the on-load tap-changer! Damage to the on-load tap-changer due to transformer ratio test being in- correctly performed. ► Do not perform more than 250 tap-change operations on the on-load tap- changer.

  • Page 68: Performing Dc Resistance Measurement On Transformer

    5 Mounting When actuating the change-over selector, a higher torque is required. 1. Switch the on-load tap-changer into the desired operating position. The di- verter switch operation can be heard distinctly. NOTICE!  An incomplete tap-change operation may damage the on-load tap-changer.

  • Page 69: Drying On-Load Tap-Changer In Autoclave

    ► Within 10 hours of drying, seal off oil compartment with on-load tap- changer head cover. Dry on-load tap-changer in accordance with the following instructions to en- sure the dielectric values assured by MR for the on-load tap-changer. If drying in an autoclave, the following methods are possible: ▪ Vacuum drying ▪...
  • Page 70 5 Mounting 5.3.5.2 Vapor-phase drying in the autoclave For vapor-phase drying in the autoclave, you must open the kerosene drain plug in the oil compartment base before drying so that the kerosene conden- sate can drain from the oil compartment. 1.

  • Page 71: Drying On-Load Tap-Changer In Transformer Tank

    5.3.6 Drying on-load tap-changer in transformer tank Dry on-load tap-changer in accordance with the following instructions to en- sure the dielectric values assured by MR on the on-load tap-changer. If you want to dry the on-load tap-changer in the transformer tank, fully as- semble the transformer first and then undertake drying.
  • Page 72 5 Mounting If you wish to perform another transformer ratio test after drying, proceed as described in the section "Performing transformer ratio test following dry- ing" [►Section 5.3.8, Page 89]. 5.3.6.2 Vapor-phase drying in the transformer tank If you have not opened the kerosene drain plug in advance (e.g. after the transformer ratio test), you have to open the kerosene drain plug before dry- ing the kerosene in the transformer tank so that the kerosene condensate can drain from the oil compartment.
  • Page 73 5 Mounting NOTICE Damage to the on-load tap-changer! Small parts in the oil compartment may block the diverter switch insert, thereby damaging the on-load tap-changer. ► Ensure that parts do not fall into the oil compartment. ► Check that all small parts are accounted for. 1.
  • Page 74 5 Mounting 5.3.6.2.1.3 Removing tap position indicator (version without multiple coarse change-over selector) ► Pull the spring clip off the shaft end and remove the tap position indicator disc. Figure 60: Tap position indicator disk 5.3.6.2.1.4 Removing tap position indicator from multiple coarse change-over selector with more than 35 operating positions 1.
  • Page 75 5 Mounting 3. Lever cover disk off underlying disk with flat screwdriver and pull out posi- tion-indication disk from between panel and bracket. Figure 62: Cover disk and position-indication disk 4. Remove hexagon screws and associated lock tab. Figure 63: Lock tab 5.
  • Page 76 5 Mounting 5.3.6.2.1.5 Removing the oil suction pipe 1. Remove cable ties from the oil suction pipe. Figure 65: Cable tie 2. Pull oil suction pipe out of on-load tap-changer head. Figure 66: Oil suction pipe 5.3.6.2.1.6 Lifting out diverter switch insert 1.
  • Page 77 5 Mounting 3. Lift the diverter switch insert slowly and vertically out of oil compartment. Figure 68: Diverter switch insert  CAUTION!  Place the diverter switch insert on a level surface and se- cure it against tipping. An unstably positioned diverter switch insert may tip, resulting in injuries and damage.
  • Page 78 5 Mounting 5.3.6.2.3 Inserting diverter switch insert 5.3.6.2.3.1 Inserting diverter switch insert 1. Check that all six insulating shims are present in the energy accumulator carrier. Figure 70: Insulating shim ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 79 5 Mounting 2. To fit the diverter switch insert, ensure that the tap selector coupling is in the adjustment position. Figure 71: Adjustment markings in oil compartment base VACUTAP® VRC/VRE Figure 72: Adjustment markings in oil compartment base VACUTAP® VRD/VRF ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 80 5 Mounting Figure 73: Adjustment markings in oil compartment base VACUTAP® VRG 3. Ensure that the diverter switch insert's energy accumulator is interlocked (the energy accumulator's eccentric disk is at its highest point). 4. Attach lifting gear to diverter switch insert and position diverter switch in- sert over oil compartment.
  • Page 81 5 Mounting 6. Slowly lower diverter switch insert until it meets the oil compartment base. Figure 74: Markings 7. Carefully press until energy accumulator carrier is in position. The shape of the tap selector coupling ensures that coupling is only possible in the correct position.
  • Page 82 5 Mounting 8. Check the distance between the upper edge of the diverter switch insert coupling tube and the on-load tap-changer head flange. The distance is 10 ± 2 mm (cover mounting and bell-type tank mounting). Figure 75: Distance between the upper edge of the coupling tube and the on-load tap-changer head flange 5.3.6.2.3.2 Inserting oil suction pipe NOTICE...
  • Page 83 5 Mounting 2. Fasten oil suction pipe on retaining bracket with cable tie. Figure 77: Fastening the oil suction pipe 5.3.6.2.3.3 Inserting the tap position indicator without multiple coarse change- over selector Due to the coupling pin, the tap position indicator disc can only be installed when in the correct position.
  • Page 84 5 Mounting 5.3.6.2.3.4 Inserting tap position indicator with multiple coarse change-over selector with more than 35 operating positions 1. Place panel with bracket on indicator drive shaft and fasten with hexagon screws and associated lock tab. Figure 79: Fitting panel 2. Insert position-indication disk horizontally between panel and bracket and fit cover disk.
  • Page 85 5 Mounting 3. Secure cover disk with countersunk head screw. The countersunk head screw must be suitable for center-punching. Figure 81: Fastening cover disk 4. Secure countersunk head screw by center-punching. 5.3.6.2.3.5 Securing on-load tap-changer head cover NOTICE!  Place on-load tap-changer head cover on on-load tap-changer head and take care not to damage the o-ring inserted in the on-load tap- changer head cover.
  • Page 86 5 Mounting 2. Screw on-load tap-changer head cover using screws and washers. Figure 83: On-load tap-changer head cover 5.3.6.2.4 Drying the on-load tap-changer 1. Connect pipe connections R and Q of on-load tap-changer head to the kerosene vapor lead using one shared lead. 2.

  • Page 87: Filling The Oil Compartment Of The On-Load Tap-Changer With Insulating Fluid

    5 Mounting 5.3.6.2.5 Closing kerosene drain plug NOTICE Damage to the on-load tap-changer! Moisture in the oil compartment reduces the dielectric strength of the insu- lating fluid and thus leads to damage to the on-load tap-changer. ► Within 10 hours of drying, seal off oil compartment with on-load tap- changer head cover.
  • Page 88 5 Mounting After drying, completely fill the oil compartment (diverter switch insert fitted) with oil again as soon as possible so that an impermissible amount of humid- ity is not absorbed from the surroundings. 1. Establish a connecting lead between pipe connection E2 and one of the pipe connections R, S or Q to ensure equal pressure in the oil compart- ment and transformer during evacuation.

  • Page 89: Performing Transformer Ratio Test After Drying

    5 Mounting 5.3.8 Performing transformer ratio test after drying NOTICE Damage to the on-load tap-changer! Damage to the on-load tap-changer due to transformer ratio test being in- correctly performed. ► Ensure that the selector / de-energized tap changer is fully immersed in the insulating fluid and that the oil compartment of the on-load tap- changer is completely filled with insulating fluid.

  • Page 90: Installing On-Load Tap-Changer In Transformer (Bell-Type Tank Version)

    5 Mounting 5.4 Installing on-load tap-changer in transformer (bell-type tank version) 5.4.1 Inserting on-load tap-changer into supporting structure 5.4.1.1 Securing tap selector on oil compartment of the on-load tap-changer VRC/VRE  CAUTION!  Place the selector on a level surface and secure it against tipping.
  • Page 91 5 Mounting 4. Remove the blocking strip from the selector coupling. Once the blocking strip is removed, the selector coupling may no longer be turned. Figure 88: Blocking strip  CAUTION!  Place the oil compartment on a level surface and secure it against tipping.
  • Page 92 5 Mounting 8. Align the position of both coupling parts and attachment points on the oil compartment and the selector with one another. The correct position of the two coupling parts is shown in the adjustment plans in the appendix. 9.
  • Page 93 5 Mounting 3. Remove the ring nuts from the tap selector. Figure 92: Ring nut 4. Remove the blocking strip from the tap selector coupling. Once the block- ing strip is removed, the tap selector coupling must no longer be turned. Figure 93: Blocking strip  CAUTION!  Place the oil compartment on a level surface and secure it against tipping.
  • Page 94 5 Mounting 6. Lift the oil compartment by hooking up the on-load tap-changer head and remove the blocking device on the coupling of the oil compartment base. Figure 94: Blocking plate and shackle 7. Carefully raise oil compartment above tap selector. 8.
  • Page 95 5 Mounting 9. Screw tap selector onto oil compartment. Figure 95: Tap selector with oil compartment 5.4.1.3 Securing tap selector on oil compartment of the on-load tap-changer  CAUTION!  Place the tap selector on a level surface and secure it against tipping. An unstably positioned tap selector may tip, resulting in serious injuries and damage.
  • Page 96 5 Mounting 3. Remove the ring nuts from the tap selector. Figure 97: Ring nut 4. Remove the blocking strip from the tap selector coupling. Once the block- ing strip is removed, the tap selector coupling must no longer be turned. Figure 98: Blocking strip  CAUTION!  Place the oil compartment on a level surface and secure it against tipping.
  • Page 97 5 Mounting 6. Lift the oil compartment by hooking up the on-load tap-changer head and remove the blocking device on the coupling of the oil compartment base. Figure 99: Blocking plate and shackle 7. Carefully raise oil compartment above tap selector. 8.
  • Page 98 5 Mounting 5.4.1.4 Connecting tap-selector connecting leads Proceed as follows to connect the tap-selector connecting leads: NOTICE!  Incorrect tightening torques and unsecured screw connections can lead to damage to the on-load tap-changer. Carefully screw tap-selec- tor connecting leads to connecting piece or ring segment. Comply with specified tightening torque and secure screw connection.
  • Page 99 5 Mounting connected, tension may occur which will damage the on-load tap-changer and transformer. There is also a risk of malfunctions from selector con- tacts moving to the closing position incorrectly. Figure 103: On-load tap-changer with spacers on supporting structure 2. Remove red supports on selector base (if present). ®...

  • Page 100: Connecting The Tap Winding And On-Load Tap-Changer Take-Off Lead

    5 Mounting 3. Temporarily fasten on-load tap-changer to supporting structure. The sup- porting flange has through holes for this purpose. Figure 104: Fastening the on-load tap-changer 5.4.2 Connecting the tap winding and on-load tap-changer take-off lead Damage to the on-load tap-changer! NOTICE Connecting leads that place mechanical strain on the on-load tap-changer will damage the on-load tap-changer.
  • Page 101 5 Mounting 3. Close the screening caps and make sure they are seated correctly. The screw head and nut must be fully covered. Figure 105: Tap selector connection contacts 5.4.2.2 Tap selector connection contacts for multiple coarse tapping arrangement NOTICE Damage to the on-load tap-changer! Tap-winding connecting leads situated too closely to the change-over selec- tor's moving parts block the change-over selector and therefore result in damage to the on-load tap-changer.
  • Page 102 2. Please pay attention to the dimensional drawing on which the order is based. Figure 106: Paper insulation 1 Connection from MR already has 3 p Connections to be insulated mm of paper insulation 5.4.2.3 Change-over selector connection contacts for reversing change-over...
  • Page 103 5 Mounting 3. Close the screening caps and make sure they are seated correctly. The screw head and nut must be fully covered. Figure 107: Change-over selector connection contacts for reversing change-over selector con- nection Figure 108: Change-over selector connection contacts for reversing change-over selector con- nection (top view) ®...
  • Page 104 5 Mounting 5.4.2.4 Change-over selector connection contacts for coarse tap selector connection VRC/VRE NOTICE Damage to the on-load tap-changer! Tap-winding connecting leads situated too closely to the change-over selec- tor's moving parts block the change-over selector and therefore result in damage to the on-load tap-changer.
  • Page 105 5 Mounting Figure 110: Change-over selector connection contacts for coarse tap selector connection (top view) 5.4.2.5 VRD/VRF tap selector connection contacts The selector connection contacts have a through-hole for M12 screws. The screening caps are supplied separately. Figure 111: Selector connection contacts ®...
  • Page 106 5 Mounting 5.4.2.6 Change-over selector connection contacts for reversing change-over selector connection VRD/VRF The (+) and (-) change-over selector connection contacts are designed like fine tap selector connection contacts for reversing change-over selector con- nections. The change-over selector connection contacts (0) are produced as terminal lugs of the crimped connecting lead (=0/K) with a through-hole for M12 screws.
  • Page 107 5 Mounting 5.4.2.9 Fine-tap-selector and change-over-selector connection contacts VRG The selector connection contacts are indicated on the selector bars. The connection is made at the thread stud of the selector connection contact via cable shoes and locknuts. Every connection point must be covered by a screening cap. The screening caps are designed for lateral connection with a straight cable shoe or for front connection with an angled cable shoe.
  • Page 108 5 Mounting 5.4.2.11 Connecting on-load tap-changer take-off lead There are through-holes 13 mm in diameter at several points in the take-off ring of the oil compartment for connecting the on-load tap-changer take-off lead. To connect the on-load tap-changer take-off lead, proceed as follows: 1.

  • Page 109: Performing Transformer Ratio Test Before Drying

    5 Mounting Figure 117: Connecting on-load tap-changer take-off lead 5.4.3 Performing transformer ratio test before drying NOTICE Damage to the on-load tap-changer! Damage to the on-load tap-changer due to transformer ratio test being in- correctly performed. ► Do not perform more than 250 tap-change operations on the on-load tap- changer.

  • Page 110: Performing Dc Resistance Measurement On Transformer

    5 Mounting When actuating the change-over selector, a higher torque is required. 1. Switch the on-load tap-changer into the desired operating position. The di- verter switch operation can be heard distinctly. NOTICE!  An incomplete tap-change operation may damage the on-load tap-changer.

  • Page 111: Drying On-Load Tap-Changer In Autoclave

    ► Within 10 hours of drying, seal off oil compartment with on-load tap- changer head cover. Dry on-load tap-changer in accordance with the following instructions to en- sure the dielectric values assured by MR for the on-load tap-changer. If drying in an autoclave, the following methods are possible: ▪ Vacuum drying ▪...
  • Page 112 5 Mounting 5.4.5.2 Vapor-phase drying in the autoclave For vapor-phase drying in the autoclave, you must open the kerosene drain plug in the oil compartment base before drying so that the kerosene conden- sate can drain from the oil compartment. 1.

  • Page 113: Lifting Top Part Of On-Load Tap-Changer Head Off Supporting Flange (Bottom Part)

    5 Mounting 5.4.6 Lifting top part of on-load tap-changer head off supporting flange (bottom part) 5.4.6.1 Removing on-load tap-changer head cover WARNING Danger of explosion! Danger of death from explosive gases under the on-load tap-changer head cover! ► Ensure that there are no open flames, hot surfaces or sparks (for exam- ple caused by static charging) in the immediate surroundings and that none arise.
  • Page 114 5 Mounting 3. Loosen screws with locking elements on on-load tap-changer head cover. Figure 120: On-load tap-changer head cover NOTICE!  Remove the on-load tap-changer head cover. Make sure that sealing surfaces on the on-load tap-changer head cover and on-load tap- changer head are in sound condition when removing and during all other work and that the o-ring is also undamaged.
  • Page 115 5 Mounting 5.4.6.2 Removing tap position indicator (version without multiple coarse change-over selector) ► Pull the spring clip off the shaft end and remove the tap position indicator disc. Figure 122: Tap position indicator disk 5.4.6.3 Removing tap position indicator from multiple coarse change-over selector with more than 35 operating positions 1.
  • Page 116 5 Mounting 3. Lever cover disk off underlying disk with flat screwdriver and pull out posi- tion-indication disk from between panel and bracket. Figure 124: Cover disk and position-indication disk 4. Remove hexagon screws and associated lock tab. Figure 125: Lock tab 5.
  • Page 117 5 Mounting 5.4.6.4 Removing the oil suction pipe 1. Remove cable ties from the oil suction pipe. Figure 127: Cable tie 2. Pull oil suction pipe out of on-load tap-changer head. Figure 128: Oil suction pipe 3. Remove mounting bracket Figure 129: Mounting bracket ®...
  • Page 118 5 Mounting 5.4.6.5 Lift the top part of the on-load tap-changer head off the bottom part 1. Remove nuts and locking elements between top part and bottom part of on-load tap-changer head. Figure 130: Top part of on-load tap-changer head with nuts ®...
  • Page 119 5 Mounting 2. Lift top part of on-load tap-changer head off bottom part. Figure 131: Top part of on-load tap-changer head ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 120: Attaching The Bell-Type Tank And Connecting The On-Load Tap-Changer To The Top Part Of The On-Load Tap-Changer Head

    5 Mounting 5.4.7 Attaching the bell-type tank and connecting the on-load tap- changer to the top part of the on-load tap-changer head 5.4.7.1 Attaching bell-type tank 1. Clean sealing surface of supporting flange, place o-ring on supporting flange. Figure 132: Supporting flange with o-ring 2.
  • Page 121 5 Mounting 5.4.7.2 Positioning top part of on-load tap-changer head on bell-type tank NOTICE!  Unsuitable gaskets may lead to oil escaping and therefore to damage to the on-load tap-changer. Place a gasket suitable for the in- sulating fluid used on the mounting flange .
  • Page 122 5 Mounting 2. Lower and position the top part of the on-load tap-changer head on mounting flange so that the triangular markings, pins and mounting holes on the top part and bottom part of the on-load tap-changer head are aligned. Figure 135: Markings and fitted bolt ®...
  • Page 123 5 Mounting 5.4.7.3 Connecting on-load tap-changer to top part of on-load tap-changer head 1. Carefully insert lifting device into the oil compartment with claws turned in. Figure 136: Lifting device NOTICE!  Swing claws of lifting device outwards, use lifting device to lift oil compartment.
  • Page 124 5 Mounting When fitting the top part and bottom part of the on-load tap-changer head together, leave the pins for the mounting plate of the tap-change supervi- sory device as well as the pins for the mounting bracket of the oil suction pipe (if present) free.
  • Page 125 5 Mounting 5. Screw on-load tap-changer head to mounting flange. Figure 140: Screwing on-load tap-changer head to mounting flange 5.4.7.4 Inserting oil suction pipe NOTICE Damage to the on-load tap-changer! Damage to the on-load tap-changer and oil suction pipe due to incorrect or- der of installation.
  • Page 126 5 Mounting 2. Insert oil suction pipe into on-load tap-changer head. Figure 142: Inserting oil suction pipe 3. Fasten oil suction pipe on retaining bracket with cable tie. Figure 143: Fastening the oil suction pipe 5.4.7.5 Inserting the tap position indicator without multiple coarse change- over selector Due to the coupling pin, the tap position indicator disc can only be installed when in the correct position.
  • Page 127 5 Mounting ► Place tap position indicator disk on indicator drive shaft, slide spring clip on to shaft end. Figure 144: Tap position indicator disk 5.4.7.6 Inserting tap position indicator with multiple coarse change-over selector with more than 35 operating positions 1.
  • Page 128 5 Mounting 2. Insert position-indication disk horizontally between panel and bracket and fit cover disk. Align tap position indicator disc and cover disk to produce a continuous red line. Figure 146: Inserting position-indication disk 3. Secure cover disk with countersunk head screw. The countersunk head screw must be suitable for center-punching.

  • Page 129: Drying On-Load Tap-Changer In Transformer Tank

    5.4.8 Drying on-load tap-changer in transformer tank Dry on-load tap-changer in accordance with the following instructions to en- sure the dielectric values assured by MR on the on-load tap-changer. If you want to dry the on-load tap-changer in the transformer tank, fully as- semble the transformer first and then undertake drying.
  • Page 130 5 Mounting 5.4.8.1 Vacuum-drying in the transformer tank The on-load tap-changer head cover remains closed during the entire drying process. 1. Establish a connecting lead between either connections E2 and Q or con- nections E2 and R on the on-load tap-changer head. 2.
  • Page 131 5 Mounting The kerosene drain plug is located in the oil compartment base and is not generally accessible from the outside. For this reason, you first have to re- move the diverter switch insert, open the kerosene drain plug, and then in- stall the diverter switch insert again.
  • Page 132 5 Mounting 2. Loosen screws with locking elements on on-load tap-changer head cover. Figure 151: On-load tap-changer head cover NOTICE!  Remove the on-load tap-changer head cover. Make sure that sealing surfaces on the on-load tap-changer head cover and on-load tap- changer head are in sound condition when removing and during all other work and that the o-ring is also undamaged.
  • Page 133 5 Mounting 5.4.8.2.1.3 Removing tap position indicator (version without multiple coarse change-over selector) ► Pull the spring clip off the shaft end and remove the tap position indicator disc. Figure 153: Tap position indicator disk 5.4.8.2.1.4 Removing tap position indicator from multiple coarse change-over selector with more than 35 operating positions 1.
  • Page 134 5 Mounting 3. Lever cover disk off underlying disk with flat screwdriver and pull out posi- tion-indication disk from between panel and bracket. Figure 155: Cover disk and position-indication disk 4. Remove hexagon screws and associated lock tab. Figure 156: Lock tab 5.
  • Page 135 5 Mounting 5.4.8.2.1.5 Removing the oil suction pipe 1. Remove cable ties from the oil suction pipe. Figure 158: Cable tie 2. Pull oil suction pipe out of on-load tap-changer head. Figure 159: Oil suction pipe 5.4.8.2.1.6 Lifting out diverter switch insert 1.
  • Page 136 5 Mounting 3. Lift the diverter switch insert slowly and vertically out of oil compartment. Figure 161: Diverter switch insert  CAUTION!  Place the diverter switch insert on a level surface and se- cure it against tipping. An unstably positioned diverter switch insert may tip, resulting in injuries and damage.
  • Page 137 5 Mounting 5.4.8.2.3 Inserting diverter switch insert 5.4.8.2.3.1 Inserting diverter switch insert 1. Check that all six insulating shims are present in the energy accumulator carrier. Figure 163: Insulating shim ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 138 5 Mounting 2. To fit the diverter switch insert, ensure that the tap selector coupling is in the adjustment position. Figure 164: Adjustment markings in oil compartment base VACUTAP® VRC/VRE Figure 165: Adjustment markings in oil compartment base VACUTAP® VRD/VRF ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 139 5 Mounting Figure 166: Adjustment markings in oil compartment base VACUTAP® VRG 3. Ensure that the diverter switch insert's energy accumulator is interlocked (the energy accumulator's eccentric disk is at its highest point). 4. Attach lifting gear to diverter switch insert and position diverter switch in- sert over oil compartment.
  • Page 140 5 Mounting 6. Slowly lower diverter switch insert until it meets the oil compartment base. Figure 167: Markings 7. Carefully press until energy accumulator carrier is in position. The shape of the tap selector coupling ensures that coupling is only possible in the correct position.
  • Page 141 5 Mounting 8. Check the distance between the upper edge of the diverter switch insert coupling tube and the on-load tap-changer head flange. The distance is 10 ± 2 mm (cover mounting and bell-type tank mounting). Figure 168: Distance between the upper edge of the coupling tube and the on-load tap-changer head flange 5.4.8.2.3.2 Inserting oil suction pipe NOTICE...
  • Page 142 5 Mounting 2. Fasten oil suction pipe on retaining bracket with cable tie. Figure 170: Fastening the oil suction pipe 5.4.8.2.3.3 Inserting the tap position indicator without multiple coarse change- over selector Due to the coupling pin, the tap position indicator disc can only be installed when in the correct position.
  • Page 143 5 Mounting 5.4.8.2.3.4 Inserting tap position indicator with multiple coarse change-over selector with more than 35 operating positions 1. Place panel with bracket on indicator drive shaft and fasten with hexagon screws and associated lock tab. Figure 172: Fitting panel 2. Insert position-indication disk horizontally between panel and bracket and fit cover disk.
  • Page 144 5 Mounting 3. Secure cover disk with countersunk head screw. The countersunk head screw must be suitable for center-punching. Figure 174: Fastening cover disk 4. Secure countersunk head screw by center-punching. 5.4.8.2.3.5 Securing on-load tap-changer head cover NOTICE!  Place on-load tap-changer head cover on on-load tap-changer head and take care not to damage the o-ring inserted in the on-load tap- changer head cover.
  • Page 145 5 Mounting 2. Screw on-load tap-changer head cover using screws and washers. Figure 176: On-load tap-changer head cover 5.4.8.2.4 Drying the on-load tap-changer 1. Connect pipe connections R and Q of on-load tap-changer head to the kerosene vapor lead using one shared lead. 2.

  • Page 146: Filling The Oil Compartment Of The On-Load Tap-Changer With Insulating Fluid

    5 Mounting 5.4.8.2.5 Closing kerosene drain plug NOTICE Damage to the on-load tap-changer! Moisture in the oil compartment reduces the dielectric strength of the insu- lating fluid and thus leads to damage to the on-load tap-changer. ► Within 10 hours of drying, seal off oil compartment with on-load tap- changer head cover.
  • Page 147 5 Mounting After drying, completely fill the oil compartment (diverter switch insert fitted) with oil again as soon as possible so that an impermissible amount of humid- ity is not absorbed from the surroundings. 1. Establish a connecting lead between pipe connection E2 and one of the pipe connections R, S or Q to ensure equal pressure in the oil compart- ment and transformer during evacuation.

  • Page 148: Performing Transformer Ratio Test After Drying

    5 Mounting 5.4.10 Performing transformer ratio test after drying NOTICE Damage to the on-load tap-changer! Damage to the on-load tap-changer due to transformer ratio test being in- correctly performed. ► Ensure that the selector / de-energized tap changer is fully immersed in the insulating fluid and that the oil compartment of the on-load tap- changer is completely filled with insulating fluid.

  • Page 149: Installing Protective Relay In Piping And Connecting

    5 Mounting 5.5.2 Installing protective relay in piping and connecting WARNING Danger of explosion! Explosive gases in the protective relay can deflagrate or explode and result in severe injury or death. ► Wait 15 minutes after switching off the transformer before beginning fur- ther work on the protective relay so that the gases can dissipate.
  • Page 150 5 Mounting ▪ The isolating device is to be rated such that the permissible disconnect times for protection against electric shock are complied with in accor- dance with the requirements of DIN VDE 0100-410, depending on the type of ground connection. ▪ The functionality of the circuit breaker tripping circuit (supply line to the cir- cuit breaker coil) must also remain guaranteed at all times, even if the iso- lating device is tripped.
  • Page 151 5 Mounting 2. Remove the slotted head screw for potential tie-in and remove the termi- nal box cover with wire. Figure 181: Terminal box cover NOTICE Damage to protective relay! Damage to protective relay resulting from improper operation! ► Never press both test buttons at the same time. 3.
  • Page 152 5 Mounting 4. Press OPERATION test button. ð Flap valve is vertical. The red indicator appears in the viewing window. Figure 183: OPERATION position 5. Position the wire for the terminal box cover and affix using the slotted head screw. Figure 184: Terminal box cover ®...
  • Page 153 5 Mounting 6. Attach the terminal box cover and secure with screws. Figure 185: Terminal box cover 5.5.2.3 Installing protective relay in piping Ensure the following for installation and proper function of the protective re- lay: 1. Ensure that there are no foreign bodies in the piping or in the oil conserva- tor.
  • Page 154 5 Mounting 8. The protective relay is intended for a horizontal operating position in close proximity to the on-load tap-changer head. A positive inclination of up to 5° from the horizontal is permitted in the direction toward the conservator. An inclination of up to 5° from the vertical to either side is permitted. Figure 186: Protective relay installation ®...
  • Page 155 5 Mounting 9. The reference arrow on the terminal box cover must point toward the on- load tap-changer's oil conservator. Figure 187: Reference arrow pointing towards the on-load tap-changer's oil conservator ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 156 5 Mounting 10. Install a stop-cock with a nominal width of at least 25 mm between the protective relay and oil conservator. Figure 188: Stop-cock 5.5.2.4 Installing electrics for protective relay The protective relay's dry-reed magnetic switch is supplied as either an NC or NO contact in the following variants: ▪...
  • Page 157 When making the electrical connection for the protective relay, proceed as follows. 1. Connect protective conductor with cable cross-section of 1…4 mm cylinder head screw. 2. Take off MR dummy plug. Figure 189: Dummy plug 3. Insert explosion-certified cable bushing into tapped hole on side of termi- nal box.
  • Page 158 5 Mounting 5. Take off the slotted head screw for potential tie-in and remove the termi- nal box cover with wire. Figure 191: Terminal box cover 6. Remove screw for the protective cover and take off the protective cover. Figure 192: Terminal box cover and protective cover 7.

  • Page 159: Fitting Motor-Drive Unit

    11. Attach the terminal box cover and secure with screws. Figure 194: Terminal box cover 5.5.3 Fitting motor-drive unit ► Fit motor-drive unit to transformer as described in relevant MR operating instructions for motor-drive unit. 5.5.4 Fitting drive shaft Observe the following during mounting: ®...
  • Page 160 5 Mounting NOTICE Damage to drive and on-load tap-changer or de-energized tap- changer! Trouble-free operation of the drive and the on-load tap-changer or de-ener- gized tap-changer cannot be guaranteed. ► The shaft ends to be connected must be exactly aligned. Permitted axial displacement Minor axial displacement can be tolerated as long as it does not exceed 35 mm per 1,000 mm square tube length (that corresponds to 2°).
  • Page 161 5 Mounting Figure 196: Permitted maximum axial displacement of horizontal drive shaft Resistance to corrosion of components Square tubes, coupling brackets, coupling bolts, screws, and locking wash- ers are corrosion-resistant. We therefore recommend not applying the same external coating to these parts as to the transformer tank. Cutting square tubes, telescopic protective tubes, and protective cover The square tubes, telescopic protective tubes, and protective cover are sup- plied in overlengths (graded standard lengths).
  • Page 162 5 Mounting 5.5.4.1 Fitting vertical drive shaft with insulator To fit the vertical drive shaft, proceed as follows.  CAUTION!  Switch off motor protective switch Q1 in the motor-drive unit (position O). If this is not done, the motor-drive unit may be started in- advertently and cause injuries.
  • Page 163 5 Mounting 3. Determine dimension A between shaft end of drive and shaft end of bevel gear. Shorten the square tube to length of A–179 mm, taking the insulator into account. Figure 198: Shortening square tube ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 164 5 Mounting 4. Deburr the cut surfaces on the square tube. Figure 199: Deburring cut surfaces 5. Screw down the double coupling bracket with the insulator supplied and the square tube. Mount the insulator on the side facing the drive. Figure 200: Screwing down the square tube and the insulator with double coupling part ®...
  • Page 165 5 Mounting 6. Slide the loosely screwed-together coupling part onto the insulator until the stop is reached. Figure 201: Sliding the coupling part onto the insulator 7. Insert the coupling bolt into the shaft end of the drive. Grease the coupling part, coupling bolt and shaft end (e.g.
  • Page 166 5 Mounting 8. Attach the square tube to the drive. Figure 203: Attaching the square tube to the drive 9. Pivot the square tube away from the axis. Figure 204: Pivoting the square tube away from the axis 10. When installing the telescopic protective tube, shorten the inner tube on the side without slots if necessary.
  • Page 167 5 Mounting The inner tube must not be deformed and must be deburred in order to slide easily in the outer tube. Figure 205: Deburring the inner tube Dimension A (= distance between Inner tube Outer tube the shaft end of the drive and the shaft end of bevel gear) 170 mm...190 mm Shorten to 200 mm...
  • Page 168 5 Mounting 11. For the separate grounding with 110 mm spacing (viewed from the slot- ted side), drill an 11 mm diameter hole in the inner tube. Figure 206: Producing grounding hole on the telescopic protective tube ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 169 5 Mounting 12. Slide the outer tube over the inner tube. When doing so, make sure that the non-slotted side of the inner tube is facing upwards. Slide the tele- scopic protective tube onto the square tube. Then slide the hose clips over the telescopic protective tube.
  • Page 170 5 Mounting 13. Place the adapter ring over the bearing collar of the bevel gear and slide upwards. Insert the coupling bolt into the shaft end of the bevel gear. Pivot the square tube back to the axis. Figure 208: Fitting the adapter ring and the coupling bolt ®...
  • Page 171 5 Mounting 14. Grease the coupling brackets, coupling bolt and shaft end (e.g. ISOFLEX TOPAS L32) and secure the square tube with the coupling brackets on the bevel gear. Set a unilateral axial clearance of 3 mm between the coupling bolt and the upper coupling piece. Figure 209: Mounting the coupling brackets ®...
  • Page 172 5 Mounting 15. Use a grounding cable and the supplied screw with contact washers to establish a connection between the bottom protective tube (inner tube) and the functional ground. Due to the risk of collision with the screw head, fit the fixing screw for the grounding cable from the inside. Figure 210: Screwing down the grounding cable on the telescopic protective tube ®...
  • Page 173 5 Mounting 16. Attach the bottom protective tube (inner tube) with a hose clip to the bearing collar of drive . Then slide the upper protective tube (outer tube) over the adapter on the bevel gear . Secure the upper protective tube to the second hose clip at top end Figure 211: Mounting the protective tube ®...
  • Page 174 5 Mounting 17. Drill two holes (4.5 mm in diameter) in the two tubes, roughly in the cen- ter and offset by 180°. Then, screw in the two tapping screws provided and lock the protective tubes against one another to produce a galvanic connection.
  • Page 175 5 Mounting 2. Loosen screws and turn pressure ring segments to one side. Figure 213: Pressure ring segments NOTICE!  Align gear unit such that the horizontal drive shaft is flush with the drive shaft of the gear unit. While aligning the gear unit, turn the unit's drive shaft such that its output shaft retains its original position.
  • Page 176 5 Mounting 4. Swivel pressure ring segments back towards gear unit and tighten screws. Ensure that the locking washer is between the screw head and pressure ring segment and that the pressure ring segments are firmly in contact with the gear unit housing. Figure 215: Securing pressure ring segments Fitting the horizontal drive shaft To mount the horizontal drive shaft, proceed as follows:...
  • Page 177 5 Mounting 2. Calculate inside width B between the housings of the upper gear unit and the bevel gear. Cut down the protective cover to B-2 mm and deburr the cut edges. Figure 217: Shortening and deburring the protective cover 3. For the separate grounding with 110 mm spacing from the bevel gear, drill an 11 mm diameter hole in the protective cover.
  • Page 178 5 Mounting 4. Screw down the double coupling bracket with the insulator supplied and the square tube. Mount the insulator on the side facing the bevel gear. Figure 219: Screwing down the square tube and the insulator with double coupling part 5.
  • Page 179 5 Mounting 6. Grease the coupling bolt, coupling part and shaft end of the bevel gear (e.g. ISOFLEX TOPAS L32) and insert the coupling bolt into shaft end. Thread the hose clip onto the square tube and slide the square tube with the coupling part onto the shaft end.
  • Page 180 5 Mounting 8. Grease the coupling bolt, the coupling brackets and the shaft end of the upper gear unit (e.g. ISOFLEX TOPAS L32) and insert the coupling bolt into the shaft end. Secure the square tube with the coupling brackets on the upper gear unit.
  • Page 181 5 Mounting 9. Attach the shortened protective cover to the housing lugs on the on-load tap-changer head and the bevel gear. Secure each end of the protective cover with a hose clip. Figure 224: Fitting the protective cover ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 182 5 Mounting 10. Use the grounding cable and the supplied screw with the contact wash- ers to establish a connection between the protective cover and the func- tional ground. Due to the risk of collision with the screw head, fit the fix- ing screw for the grounding cable from the inside.

  • Page 183: Centering On-Load Tap-Changer And Motor-Drive Unit

    MR operating instructions for motor-drive unit. 5.5.6 Making the electrical connections for the motor-drive unit ► Make electrical connections for the motor-drive unit as described in rele- vant MR operating instructions for the motor-drive unit. ® Maschinenfabrik Reinhausen GmbH 2020...

  • Page 184: Commissioning

    6 Commissioning 6 Commissioning WARNING Danger of explosion! Explosive gases in the oil compartment of the on-load tap-changer, trans- former, pipework system, oil conservator and at the dehydrating breather opening can deflagrate or explode and result in severe injury or death! ►...
  • Page 185 6 Commissioning 2. Remove screw cap on air-vent valve E1 on the on-load tap-changer head cover. Figure 226: Screw cap 3. Use screwdriver to lift valve tappet on air-vent valve E1 and bleed on-load tap-changer head. Figure 227: Valve tappet 4. Seal air-vent valve E1 with screw cap (tightening torque 10 Nm). ®...

  • Page 186: Grounding The On-Load Tap-Changer

    6 Commissioning 6.1.1.2 Bleeding suction pipe on pipe connection S 1. Remove screw cap from pipe connection S. Figure 228: Screw cap NOTICE!  An incompletely bled suction pipe significantly impairs the insu- lation capability of the on-load tap changer to ground. Open vent screw and bleed suction pipe completely.

  • Page 187: Checking Motor-Drive Unit

    6 Commissioning 1. Ground the on-load tap-changer. To do this, only connect the grounding terminal on the on-load tap-changer head with the transformer cover. Figure 229: Grounding terminal on on-load tap-changer head 2. Ground the motor-drive unit. To do this, only connect the motor-drive unit's ground connection with protection against twisting to the trans- former's ground connection.

  • Page 188: High-Voltage Tests On The Transformer

    Tests on the motor-drive unit 1. Perform function checks as described in relevant MR operating instruc- tions for motor-drive unit. NOTICE!  An incorrectly coupled motor-drive unit will lead to damage to the on-load tap-changer.

  • Page 189: Transporting Transformer To The Operating Site

    4. Do not actuate an on-load tap-changer which is uncoupled and do not turn its drive shaft. 5. Transport the drive to the installation site in the MR delivery packaging. 6. Fit the drive [►Section 5.5.3, Page 159] and the drive shaft to the trans- former at the installation site.

  • Page 190: Transport With Empty Transformer Tank

    6 Commissioning In the event of a short-term immobilization time (maximum of 4 weeks) with- out an oil conservator, it is also sufficient to remove approximately 5 liters of insulating fluid from the on-load tap-changer oil compartment. 6.2.3 Transport with empty transformer tank NOTICE Damage to the on-load tap-changer! The on-load tap-changer may be subject to oscillating movements during...

  • Page 191: Commissioning Transformer At Operating Site

    6 Commissioning 6.3 Commissioning transformer at operating site Before energizing the transformer, check that the motor-drive unit and pro- tective devices are functioning correctly and fill the on-load tap-changer oil compartment with fresh insulating fluid. 6.3.1 Filling the oil compartment of the on-load tap-changer with insulating fluid Damage to the on-load tap-changer! NOTICE...

  • Page 192: Bleeding On-Load Tap-Changer Head And Suction Pipe

    6 Commissioning 2. Fill on-load tap-changer with new insulating fluid using one of the two free pipe connections of the on-load tap-changer head. Figure 233: Pipe connections S and R 3. Take an insulating fluid sample from the oil compartment. 4. Record the temperature of the sample immediately after the sample is taken.
  • Page 193 6 Commissioning 2. Remove screw cap on air-vent valve E1 on the on-load tap-changer head cover. Figure 234: Screw cap 3. Use screwdriver to lift valve tappet on air-vent valve E1 and bleed on-load tap-changer head. Figure 235: Valve tappet 4. Seal air-vent valve E1 with screw cap (tightening torque 10 Nm). ®...

  • Page 194: Checking Motor-Drive Unit

    6 Commissioning 6.3.2.2 Bleeding suction pipe on pipe connection S 1. Remove screw cap from pipe connection S. Figure 236: Screw cap NOTICE!  An incompletely bled suction pipe significantly impairs the insu- lation capability of the on-load tap changer to ground. Open vent screw and bleed suction pipe completely.

  • Page 195: Checking Protective Relay

    Tests on the motor-drive unit 1. Perform function checks as described in relevant MR operating instruc- tions for motor-drive unit. NOTICE!  An incorrectly coupled motor-drive unit will lead to damage to the on-load tap-changer.

  • Page 196: Commissioning The Transformer

    6 Commissioning 8. Press IN SERVICE test button. 9. Leave the transformer's danger zone. 10. Close the transformer's circuit breaker with isolating switches open and the transformer grounded on all sides. 11. Press OFF test button. 12. Ensure that the transformer's circuit breaker is open. ð...

  • Page 197: Fault Elimination

    In the event of faults on the on-load tap-changer and motor-drive unit which cannot be easily corrected on site, or if the protective relay or additional pro- tective devices have been tripped, please inform your authorized MR repre- sentative, the transformer manufacturer or contact MR directly.
  • Page 198 Contact MR in the event of noise from the motor-drive unit. Red message on monitoring unit If possible read out database and send to MR along with error code. Warning or tripping of Buchholz relay on transformer Notify manufacturer of transformer.

  • Page 199: Tripping The Protective Relay And Re-Commissioning The Transformer

    7 Fault elimination 7.1 Tripping the protective relay and re-commissioning the transformer WARNING Danger of explosion! Explosive gases in the protective relay can deflagrate or explode and result in severe injury or death. ► Wait 15 minutes after switching off the transformer before beginning fur- ther work on the protective relay so that the gases can dissipate.

  • Page 200: Flap Valve In Off Position

    7 Fault elimination 7.1.2 Flap valve in OFF position If the flap valve is in the OFF position, proceed as follows: 1. Ensure that the transformer is not started up under any circumstances. 2. Contact and inform Maschinenfabrik Reinhausen of the following: ð...

  • Page 201: Technical Data

    8 Technical data 8 Technical data An overview of all key technical data for the on-load tap-changer and motor- drive unit exists in the form of separate documents, which are available on request. 8.1 Permissible ambient conditions Air temperature during operation -25°C…+50°C Temperature of the insulating fluid in operation Insulating fluid in accordance with IEC 60296: -25°C…+105°C...
  • Page 202 8 Technical data Electrical data DC switching capacity 1.2 W…200 W AC switching capacity (50 Hz) 1.2 VA…400 VA Switching voltage AC/DC 24 V…250 V Switched current AC/DC 4.8 mA…2 A Table 17: Electrical data Switching capacity (switching load on an off) Minimum switched current AC/DC (low- 50 mA (at 24 V) est voltage)

  • Page 203: Protective Relay With Several Dry-Reed Magnetic Switches

    8 Technical data Switching capacity (switching load on an off) Maximum switched current DC (highest 2 A (at 125 V with L/R = 40 ms) current) Maximum switched current DC (highest 1 A (at 250 V with L/R = 40 ms) voltage) Maximum switched current AC (highest 2 A (at 125 V with cos φ...

  • Page 204: Tests

    8 Technical data 8.2.2 Tests Electrical safety IEC 61010-1 Safety requirements for electrical measurement and con- trol and regulation equipment and laboratory instruments ▪ Overvoltage category III ▪ Contamination level 2 Table 24: Electrical safety ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 205: Limit Values For Dielectric Strength And Water Content Of Insulating Fluids

    8 Technical data 8.3 Limit values for dielectric strength and water content of insulating fluids The following tables specify the limit values for dielectric strength (measured in accordance with IEC 60156) and water content (measured in accordance ® with IEC 60814) of insulating fluids for the VACUTAP on-load tap-changer.

  • Page 206: Drawings

    9 Drawings 9 Drawings 9.1 VACUTAP® VRC/VRE-Ex, installation drawing (899992) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 207: Vacutap® Vrd/Vrf-Ex, Installation Drawing (899898)

    9 Drawings 9.2 VACUTAP® VRD/VRF-Ex, installation drawing (899898) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 208: Vacutap® Vrg-Ex, Installation Drawing (899945)

    9 Drawings 9.3 VACUTAP® VRG-Ex, installation drawing (899945) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 209: Vacutap® Vrc/Vre-Ex, Installation Position Of Tap Selector Connection Contacts (727042)

    9 Drawings 9.4 VACUTAP® VRC/VRE-Ex, installation position of tap selector connection contacts (727042) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 210: Vacutap® Vrd/Vrf/Vrg-Ex, Fine Tap Selector Connection Contact And Change-Over Selector Connection Contact (899941)

    9 Drawings 9.5 VACUTAP® VRD/VRF/VRG-Ex, fine tap selector connection contact and change-over selector connection contact (899941) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 211: Vacutap® Vr-Ex, Special Design For Bell-Type Tank Installation (720781)

    9 Drawings 9.6 VACUTAP® VR-Ex, special design for bell-type tank installation (720781) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 212: Vacutap® Vr-Ex, Lifting Device For Bell-Type Tank Installation (720845)

    9 Drawings 9.7 VACUTAP® VR-Ex, lifting device for bell-type tank installation (720845) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 213: Vacutap® Vr-Ex, On-Load Tap-Changer Head (720847)

    9 Drawings 9.8 VACUTAP® VR-Ex, on-load tap-changer head (720847) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 214: Vacutap® Vr-Ex, Adjustment Positions (728557)

    9 Drawings 9.9 VACUTAP® VR-Ex, adjustment positions (728557) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 215: Vacutap® Vrc/Vre-Ex, Adjustment Plan Without Change-Over Selector (719853)

    9 Drawings 9.10 VACUTAP® VRC/VRE-Ex, adjustment plan without change- over selector (719853) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 216 9 Drawings ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 217: Vacutap® Vrd/Vrf-Ex, Adjustment Plan Without Change-Over Selector (721089)

    9 Drawings 9.11 VACUTAP® VRD/VRF-Ex, adjustment plan without change- over selector (721089) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...
  • Page 218 9 Drawings ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 219: Vacutap® Vrc Iii/Vrc Ii/Vre Iii-Ex, Adjustment Plan With Reversing Change-Over Selector Connection (719850)

    9 Drawings 9.12 VACUTAP® VRC III/VRC II/VRE III-Ex, adjustment plan with reversing change-over selector connection (719850) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 220: Vacutap® Vrc I/Vre I-Ex, Adjustment Plan With Reversing Change-Over Selector Connection (719851)

    9 Drawings 9.13 VACUTAP® VRC I/VRE I-Ex, adjustment plan with reversing change-over selector connection (719851) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 221: Vacutap® Vrd/Vrf-Ex, Adjustment Plan With Reversing Change-Over Selector Connection (721092)

    9 Drawings 9.14 VACUTAP® VRD/VRF-Ex, adjustment plan with reversing change-over selector connection (721092) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 222: Vacutap® Vrg-Ex, Adjustment Plan With Reversing Change-Over Selector Connection (727074)

    9 Drawings 9.15 VACUTAP® VRG-Ex, adjustment plan with reversing change-over selector connection (727074) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 223: Vacutap® Vrc/Vre-Ex, Adjustment Plan With Coarse Tap Selector Connection (719852)

    9 Drawings 9.16 VACUTAP® VRC/VRE-Ex, adjustment plan with coarse tap selector connection (719852) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 224: Adjustment Plan Vacutap® Vrc-Ex With Multiple Coarse Change-Over Selector For Change-Over Selector Division 10, 2-5 Coarse Tap Connections (731412)

    9 Drawings 9.17 Adjustment plan VACUTAP® VRC-Ex with multiple coarse change-over selector for change-over selector division 10, 2-5 coarse tap connections (731412) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 225: Adjustment Plan Vacutap® Vrc-Ex With Multiple Coarse Change-Over Selector For Change-Over Selector Division 12, 2-5 Coarse Tap Connections (731411)

    9 Drawings 9.18 Adjustment plan VACUTAP® VRC-Ex with multiple coarse change-over selector for change-over selector division 12, 2-5 coarse tap connections (731411) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 226: Adjustment Plan Vacutap® Vrc-Ex With Multiple Coarse Change-Over Selector For Change-Over Selector Division 14, 2-5 Coarse Tap Connections (731410)

    9 Drawings 9.19 Adjustment plan VACUTAP® VRC-Ex with multiple coarse change-over selector for change-over selector division 14, 2-5 coarse tap connections (731410) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 227: Adjustment Plan Vacutap® Vrc-Ex With Multiple Coarse Change-Over Selector For Change-Over Selector Division 16, 2-5 Coarse Tap Connections (731000)

    9 Drawings 9.20 Adjustment plan VACUTAP® VRC-Ex with multiple coarse change-over selector for change-over selector division 16, 2-5 coarse tap connections (731000) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 228: Adjustment Plan Vacutap® Vrc-Ex With Multiple Coarse Change-Over Selector For Change-Over Selector Division 18, 2-5 Coarse Tap Connections (730977)

    9 Drawings 9.21 Adjustment plan VACUTAP® VRC-Ex with multiple coarse change-over selector for change-over selector division 18, 2-5 coarse tap connections (730977) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 229: Vacutap® Vrd/Vrf-Ex, Adjustment Plan With Coarse Tap Selector Connection (721091)

    9 Drawings 9.22 VACUTAP® VRD/VRF-Ex, adjustment plan with coarse tap selector connection (721091) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 230: Vacutap® Vrg-Ex, Adjustment Plan With Coarse Tap Selector Connection (727075)

    9 Drawings 9.23 VACUTAP® VRG-Ex, adjustment plan with coarse tap selector connection (727075) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 231: Tracing Template For On-Load Tap-Changer Head (890183)

    9 Drawings 9.24 Tracing template for on-load tap-changer head (890183) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 232: Socket Wrench For Kerosene Drain Plug (723015)

    9 Drawings 9.25 Socket wrench for kerosene drain plug (723015) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...

  • Page 233: Screw Tools For Installation And Maintenance (723016)

    9 Drawings 9.26 Screw tools for installation and maintenance (723016) ® Maschinenfabrik Reinhausen GmbH 2020 5292950/01 EN VACUTAP VR I II III-Ex...

  • Page 234: Bevel Gear Cd 6400, Dimensional Drawing (892916)

    9 Drawings 9.27 Bevel gear CD 6400, dimensional drawing (892916) ® VACUTAP VR I II III-Ex 5292950/01 EN Maschinenfabrik Reinhausen GmbH 2020...
  • Page 236 Maschinenfabrik Reinhausen GmbH Falkensteinstrasse 8 93059 Regensburg +49 (0)941 4090-0 sales@reinhausen.com www.reinhausen.com ® 5292950/01 EN - VACUTAP VR I II III-Ex - - 08/20 - Maschinenfabrik Reinhausen GmbH 2020 THE POWER BEHIND POWER.

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