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MR VACUTAP VM Replacement Instructions Manual

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OILTAP® M, MS/VACUTAP® VM®
Replacement instructions for diverter switch insert 2888956/00

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Summary of Contents for MR VACUTAP VM

  • Page 1 OILTAP® M, MS/VACUTAP® VM® Replacement instructions for diverter switch insert 2888956/00...
  • Page 2 © All rights reserved by Maschinenfabrik Reinhausen Copying and distribution of this document and the utilization and communication of its contents are strictly prohi- bited unless expressly authorized. Offenders will be held liable for the payment of damages. All rights reserved in the event of the granting of a pa- tent, utility model or ornamental design registration.

  • Page 3: Table Of Contents

    Table of contents Table of contents Introduction .................. 7     1.1  Manufacturer ..................... 7  1.2  Subject to change without notice .............. 7  1.3  Safekeeping ....................7  1.4  Notation conventions ................8  1.4.1 Hazard communication system ................8     1.4.2 Information system ....................
  • Page 4 Table of contents 4.2  Transportation, receipt and handling of shipments ......... 19  4.3  Storage of shipments ................21  Preparatory work ................ 23     5.1  Safety precautions .................. 23  5.2  Providing auxiliary equipment ..............23  5.3  Moving on-load tap-changer to adjustment position ....... 24  5.4 ...
  • Page 5 Table of contents 6.10  Taking oil filter unit out of operation ............46  Installing VACUTAP® VM® diverter switch insert ....47     7.1  Drying diverter switch insert ..............47  7.1.1 Vacuum-drying in the autoclave ................. 47     7.1.2 Vapor-phase drying in the autoclave ..............
  • Page 6 Maintenance intervals ................75  11.3  Oil change ....................77  11.3.1 Oil to use ......................77     11.3.2 Performing oil change ..................77     MR worldwide ................78     OILTAP® M, MS/VACUTAP® VM® 2888956/00 EN © Maschinenfabrik Reinhausen 2012...

  • Page 7: Introduction

    1 Introduction Introduction This technical file contains detailed descriptions on the safe and proper instal- lation, connection and commissioning of the product. It also includes safety instructions and general information about the product. This technical file is intended solely for specially trained and authorized per- sonnel.

  • Page 8: Notation Conventions

    1 Introduction Notation conventions This section contains an overview of the abbreviations, symbols and textual emphasis used. 1.4.1 Hazard communication system Warnings in this technical file use the following format: DANGER! Danger Consequences ► Action ► Action The following signal words are used: Signal word Hazard level Consequence of failure to comply...

  • Page 9: Information System

    1 Introduction Pictograms warn of dangers: Picto- Definition gram Danger Dangerous electrical voltage Fire hazard Danger of tipping 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: Symbols Used

    2 Safety 1.4.3 Symbols used Symbol Definition Wrench size Tightening torque Number and type of fastening materials used Fill with oil Cut open, cut through Clean Visual inspection Table 3 Symbols used Safety General safety information This technical file contains detailed descriptions on the safe and proper instal- lation, connection and commissioning of the product.

  • Page 11: Appropriate Use

    2 Safety Appropriate use The product and associated equipment and special tools supplied with it comply with the relevant legislation, regulations and standards, particularly health and safety requirements, applicable at the time of delivery. If used as intended and in compliance with the specified requirements and conditions in this technical file as well as the warning notices in this technical file and attached to the product, then the product does not present any ha- zards to people, property or the environment.
  • Page 12 2 Safety NOTICE Damage to property and the environment! Damage to property and the environment due to electrical voltage, fall- ing and/or tipping parts and leaking oil. ► Adherence to the following prerequisites and conditions is mandatory. ► Adhere to warning notices. Since the diverter switch insert was dimensioned as per IEC 60214-1, it can switch currents of up to twice the value of the rated through current.

  • Page 13: Required Minimum Height Of The Oil Conservator

    2 Safety 2.2.1 Required minimum height of the oil conservator The height (H) of the oil conservator for the on-load tap-changer is calculated from the upper edge of the on-load tap-changer cover to the oil level in the oil conservator. Oil-filled on-load tap-changer with open oil conservator Installation height (m) above sea level Figure 1...

  • Page 14: Maximum Height Of The Oil Conservator

    2 Safety 2.2.2 Maximum height of the oil conservator In addition to the minimum height specified in the previous chapter, the maxi- mum height of the oil conservator must also be observed. The maximum height of the oil conservator for the on-load tap-changer is "minimum height + 5 m".

  • Page 15: Personal Protective Equipment

    2 Safety  Regulations and operating instructions for safe working as well as the re- levant instructions for staff procedures in the case of accidents and fires are kept on hand at all times and are displayed in the workplace where applicable.
  • Page 16 2 Safety Always wear Protective clothing Close-fitting work clothing with a low breaking strength, with tight sleeves and with no pro- truding parts. It mainly serves to protect the wearer against being caught by moving ma- chine parts. Do not wear any rings, necklaces or other je- welry.

  • Page 17: Product Description

    3 Product description Product description Performance features The product is particularly characterized by the following properties:  maintenance-free up to 300,000 tap-change operations  significantly reduced operating costs  no arcing in the insulating oil  extended lifespan of the insulating oil Scope of delivery The product is packaged with protection against moisture and is delivered as follows:...

  • Page 18: Packaging, Transport And Storage

    4 Packaging, transport and storage Packaging, transport and storage Packaging 4.1.1 Purpose The packaging is designed to protect the packaged goods during transport, loading and unloading as well as periods of storage in such a way that no (de- trimental) changes occur. The packaging must protect the goods against per- mitted transport stresses such as vibration, knocks and moisture (rain, snow, condensation).

  • Page 19: Markings

    4 Packaging, transport and storage 4.1.3 Markings The packaging bears a signature with symbols with instructions for safe transport and correct storage. The following symbols apply to the shipment (of non-hazardous goods). Adherence to these symbols is mandatory. Protect against moisture Fragile Figure 4 Shipping symbols...
  • Page 20 4 Packaging, transport and storage NOTICE Damage to packaged goods due to falling and tipping over! Danger of damage due to falling and tipping over! ► Only trained and appointed persons may select the sling gear and secure the load. ►...

  • Page 21: Storage Of Shipments

    Storage of shipments Upon receipt of the shipment, immediately remove the dried packaged goods sent by MR from the sealed packaging. Store the packaged goods in dry insulating oil until used. © Maschinenfabrik Reinhausen 2012 2888956/00 EN...

  • Page 23: Preparatory Work

    5 Preparatory work Preparatory work Perform the following work before starting diverter switch insert replacement. Safety precautions WARNING! Danger of death and severe injury! An energized transformer and energized on-load tap-changer compo- nents could cause death or serious injuries! ► Adherence to the following safety precautions is mandatory. Switch off transformer.

  • Page 24: Moving On-Load Tap-Changer To Adjustment Position

    Approx. oil quantity (l) Table 6 Oil quantity for oil change  Crane or MR lifting device (weight of diverter switch insert max. 80 kg, lift- ing force approx. 1300 N), see table below Rated voltage (kV) 72.5 Withdrawal height (mm)

  • Page 25: Removing Horizontal Drive Shaft

    5 Preparatory work Removing horizontal drive shaft Loosen hose ties on guard plate of horizontal drive shaft, remove guard plate. Figure 6 Loosening hose ties © Maschinenfabrik Reinhausen 2012 2888956/00 EN OILTAP® M, MS/VACUTAP® VM®...
  • Page 26 5 Preparatory work Depending on version, loosen 4 or 6 screws on coupling pieces to upper gear unit and bevel gear. Figure 7 Loosening screws on coupling pieces Remove horizontal drive shaft. Figure 8 Removing drive shaft OILTAP® M, MS/VACUTAP® VM® 2888956/00 EN ©...

  • Page 27: Removing Oiltap® M Diverter Switch Insert

    6 Removing OILTAP® M diverter switch insert Removing OILTAP® M diverter switch insert Lowering oil level in diverter switch oil compartment Before removing the on-load tap-changer head cover, the oil level in the diver- ter switch oil compartment must be lowered. After removing the on-load tap- changer head cover, the remaining oil must be drained from the diverter switch oil compartment.

  • Page 28: Lowering Oil Level Without Oil Filter Unit

    6 Removing OILTAP® M diverter switch insert 6.1.1 Lowering oil level without oil filter unit Remove screw cap on air-vent valve E1 on the on-load tap-changer head cover. Figure 9 Screw cap on air-vent valve E1 Use screwdriver to lift valve tappet on air-vent valve E1 until oil starts to come out.

  • Page 29: Lowering Oil Level With Oil Filter Unit

    6 Removing OILTAP® M diverter switch insert Use screwdriver to lift valve tappet on air-vent valve E1. The oil level falls automatically. Figure 11 Valve tappet on air-vent valve E1 Once approx. 10 l of oil has been drained, close drain valve and seal air- vent valve E1 with screw cap.
  • Page 30 6 Removing OILTAP® M diverter switch insert Use screwdriver to lift valve tappet on air-vent valve E1 until oil starts to come out. Figure 13 Valve tappet on air-vent valve E1 Close stop-cock between oil conservator and on-load tap-changer. Place a bucket (10 l) either under the drain valve or test valve in the supply pipe to collect the drained oil.

  • Page 31: Switching Off Supply Voltage To Tap-Change Supervisory Control (If Present)

    6 Removing OILTAP® M diverter switch insert Switching off supply voltage to tap-change supervisory con- trol (if present) If the on-load tap-changer is fitted with a tap-change supervisory control (you can tell this from the bushing on the pipe connection), the tap-change super- visory control must be de-energized before the on-load tap-changer head cover is removed.

  • Page 32: Removing On-Load Tap-Changer Head Cover

    6 Removing OILTAP® M diverter switch insert Removing on-load tap-changer head cover WARNING! Danger of death or severe injury! Danger of death or severe injury from explosive gases under the on-load tap-changer cover! ► Ensure that there are no naked flames, hot surfaces or sparks (e.g. caused by static charging) in the immediate surroundings and that none occur.

  • Page 33: Emptying Diverter Switch Oil Compartment

    6 Removing OILTAP® M diverter switch insert Loosen screws with locking washers on the on-load tap-changer head cover. Figure 16 On-load tap-changer head cover Remove the on-load tap-changer head cover. Check that the sealing sur- faces 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.

  • Page 34: Removing The Tap Position Indicator

    6 Removing OILTAP® M diverter switch insert Removing the tap position indicator 6.5.1 Removing tap position indicator (version with multiple coarse change-over selector, long panel) Remove both countersunk head screws. Figure 18 Tap position indicator Pull tap position indicator disc with cover disk out horizontally from be- tween panel and bracket.
  • Page 35 6 Removing OILTAP® M diverter switch insert Remove both hexagon screws and associated lock tab. Figure 20 Lock tab with hexagon screws Pull panel and bracket up and off indicator drive shaft. Figure 21 Panel with bracket © Maschinenfabrik Reinhausen 2012 2888956/00 EN OILTAP®...

  • Page 36: Removing Tap Position Indicator (Version With Multiple Coarse Change-Over Selector, Short Panel)

    6 Removing OILTAP® M diverter switch insert 6.5.2 Removing tap position indicator (version with multiple coarse change-over selector, short panel) Remove countersunk head screw. Figure 22 Tap position indicator Lever cover disk off underlying tap position indicator disc with flat screw- driver.
  • Page 37 6 Removing OILTAP® M diverter switch insert Pull tap position indicator disc out horizontally from between panel and bracket. Figure 24 Tap position indicator disc Remove both hexagon screws and associated lock tab. Figure 25 Lock tab with hexagon screws ©...

  • Page 38: Removing Tap Position Indicator (Design Without Multiple Coarse Change-Over Selector)

    6 Removing OILTAP® M diverter switch insert Pull panel and bracket up and off indicator drive shaft. Figure 26 Panel with bracket 6.5.3 Removing tap position indicator (design without multiple coarse change-over selector) ► Pull the spring clip off the shaft end and remove the tap position indicator disc.

  • Page 39: Disconnecting Tap-Change Supervisory Control Lead

    6 Removing OILTAP® M diverter switch insert Disconnecting tap-change supervisory control lead WARNING! Danger of death or severe injury! Danger of death or severe injury from explosive gases under the on-load tap-changer cover! ► Ensure that there is no supply voltage on the tap-change supervisory con- trol.

  • Page 40: Tap-Change Supervisory Control With Plug Connector

    6 Removing OILTAP® M diverter switch insert 6.6.2 Tap-change supervisory control with plug connector Lift plug connector and leads out of bracket and retaining clamps. Figure 29 Lifting plug connector out of bracket Disconnect the plug connector. Figure 30 Disconnecting plug connector OILTAP®...
  • Page 41 6 Removing OILTAP® M diverter switch insert Put part B of plug connector back in bracket. Figure 31 Putting part B of plug connector back in bracket Place part A of plug connector between 2 pipe connections so that the cable cannot be damaged when pulling out the diverter switch insert.

  • Page 42: Removing Diverter Switch Insert

    6 Removing OILTAP® M diverter switch insert Removing diverter switch insert NOTICE Damage to on-load tap-changer and transformer from blocking of diverter switch! Small parts in the diverter switch oil compartment may block the diver- ter switch insert, thereby damaging the on-load tap-changer and trans- former! ►...
  • Page 43 6 Removing OILTAP® M diverter switch insert Insert the lifting gear in the eyebolts and position lifting gear vertically above the diverter switch insert. Figure 35 Eyebolts on diverter switch insert Lift the diverter switch insert slowly and vertically. © Maschinenfabrik Reinhausen 2012 2888956/00 EN OILTAP®...

  • Page 44: Removing Cover Plate Above Indicator Gear

    6 Removing OILTAP® M diverter switch insert CAUTION! Risk of injury due to unstable position of heavy parts! An unstably positioned diverter switch insert may tip, resulting in se- rious injuries. ► Place the diverter switch insert on a level surface. ►...

  • Page 45: Cleaning Oil Conservator, Protective Relay Rs 2001, Diverter Switch Oil Compartment And Suction Pipe

    6 Removing OILTAP® M diverter switch insert Remove countersunk head screws and nuts. Figure 36 Removing cover plate Remove cover plate and spacing sleeves. Figure 37 Removing cover plate Cleaning oil conservator, protective relay RS 2001, diverter switch oil compartment and suction pipe ►...

  • Page 46: Taking Oil Filter Unit Out Of Operation

    6 Removing OILTAP® M diverter switch insert 6.10 Taking oil filter unit out of operation Take the oil filter unit (if present) out of operation as follows: ► Switch off motor protective switch of the oil filter unit and provide a safe- guard to prevent unintentional restart ►...

  • Page 47: Installing Vacutap® Vm® Diverter Switch Insert

    7 Installing VACUTAP® VM® diverter switch insert Installing VACUTAP® VM® diverter switch insert Drying diverter switch insert The diverter switch insert is usually dry when supplied. Should the diverter switch insert have to be dried despite this, minimum drying must be undertaken as specified below. 7.1.1 Vacuum-drying in the autoclave Heat up the diverter switch insert in air at atmospheric pressure with a...

  • Page 48: Inserting Diverter Switch Insert

    7 Installing VACUTAP® VM® diverter switch insert Inserting diverter switch insert To fit the diverter switch insert, ensure that the tap selector coupling is in the adjustment position. Figure 38 Adjustment position Ensure that the adapter shaft is seated correctly on the insulating tube. Figure 39 Adapter shaft OILTAP®...
  • Page 49 7 Installing VACUTAP® VM® diverter switch insert Remove supplied protective sleeve from diverter switch insert. Figure 40 Protective sleeve Place protective sleeve on indicator drive shaft. Figure 41 Protective sleeve on indicator drive shaft Insert the lifting gear in the lugs of the diverter switch insert carrier plate provided for this purpose and position diverter switch insert above diver- ter switch oil compartment.
  • Page 50 7 Installing VACUTAP® VM® diverter switch insert Align diverter switch insert such that the red markings on the diverter switch insert and on on-load tap-changer head are opposite one another. Figure 42 Aligning diverter switch insert Slowly lower diverter switch insert. OILTAP®...

  • Page 51: Connecting Tap-Change Supervisory Control Lead

    7 Installing VACUTAP® VM® diverter switch insert Secure carrier plate of diverter switch insert. Figure 43 Carrier plate of diverter switch insert for standard transformer design Figure 44 Carrier plate of diverter switch insert for bell-type tank transformer design Connecting tap-change supervisory control lead 7.3.1 Tap-change supervisory control with terminal The tap-change supervisory control's terminal connection must not be used...

  • Page 52: Tap-Change Supervisory Control With Plug Connector

    7 Installing VACUTAP® VM® diverter switch insert 7.3.2 Tap-change supervisory control with plug connector Lift part B of plug connector out of bracket. Figure 45 Plug connector Connect the plug connector. Figure 46 Connecting the plug connector OILTAP® M, MS/VACUTAP® VM® 2888956/00 EN ©...

  • Page 53: Installing Tap Position Indicator

    7 Installing VACUTAP® VM® diverter switch insert Place plug connector in bracket, secure leads on both sides of plug con- nector in retaining clamps. Figure 47 Putting plug connector back in bracket Installing tap position indicator 7.4.1 Installing tap position indicator (version with multiple coarse change-over selector, long panel) Place panel with bracket on indicator drive shaft and secure with two M5x12/SW8 hexagon screws and associated lock tab.
  • Page 54 7 Installing VACUTAP® VM® diverter switch insert Insert tap position indicator disc with cover disk horizontally between panel and bracket. Figure 49 Tap position indicator disc with cover disk Secure tap position indicator disc with countersunk head screws. Figure 50 Securing tap position indicator disc Secure countersunk head screws by center-punching.

  • Page 55: Installing Tap Position Indicator (Version With Multiple Coarse Change-Over Selector, Short Panel)

    7 Installing VACUTAP® VM® diverter switch insert 7.4.2 Installing tap position indicator (version with multiple coarse change-over selector, short panel) Place panel with bracket on indicator drive shaft and secure with 2 hex- agon screws and associated lock tab. Figure 51 Panel with bracket Insert tap position indicator disc horizontally between panel and bracket and fit cover disk.

  • Page 56: Installing Tap Position Indicator (Design Without Multiple Coarse Change-Over Selector)

    7 Installing VACUTAP® VM® diverter switch insert Secure cover disk with countersunk head screw. Figure 53 Securing cover disk Secure countersunk head screw by center-punching. 7.4.3 Installing tap position indicator (design 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 57: Replacing Temperature Sensor

    7 Installing VACUTAP® VM® diverter switch insert Replacing temperature sensor The temperature sensor must be replaced when its length (L) exceeds 80 ► Determine length (L) of temperature sensor. Figure 55 Temperature sensor in on-load tap-changer head cover Length L of temper- Action required ature sensor L ...

  • Page 58: Filling Diverter Switch Oil Compartment With Oil

    7 Installing VACUTAP® VM® diverter switch insert Filling diverter switch oil compartment with oil Fill oil conservator and diverter switch oil compartment up to the height of the carrier plate with new mineral insulating oil for transformers as per EC 60296 (Specification for unused mineral insulating oils for transformers and switch gear).

  • Page 59: Securing On-Load Tap-Changer Head Cover

    7 Installing VACUTAP® VM® diverter switch insert Securing on-load tap-changer head cover Insert new o-ring in on-load tap-changer head cover. NOTICE Damage to on-load tap-changer resulting from damaged o-ring! A damaged o-ring in the on-load tap-changer head cover will cause oil to escape from the diverter switch oil compartment, resulting in on-load tap-changer damage.
  • Page 60 7 Installing VACUTAP® VM® diverter switch insert Screw down on-load tap-changer head cover with screws and locking washers. Figure 57 On-load tap-changer head cover Replace current name plate on on-load tap-changer head cover with new one (VACUTAP® VM® diverter switch insert). Replace name plate and label indicating maintenance interval in motor- drive unit with new name plate (VACUTAP®...

  • Page 61: Bleeding On-Load Tap-Changer Head And Suction Pipe

    7 Installing VACUTAP® VM® diverter switch insert Bleeding on-load tap-changer head and suction pipe Before first commissioning, the on-load tap-changer head and the suction pipe on pipe connection S must be bled. 7.9.1 Bleeding on-load tap-changer head Open all forward and return valves in the pipe system. Remove screw cap on air-vent valve E1 on the on-load tap-changer head cover.

  • Page 62: Bleeding Suction Pipe On Pipe Connection S

    7 Installing VACUTAP® VM® diverter switch insert 7.9.2 Bleeding suction pipe on pipe connection S Remove screw cap from pipe connection S. Figure 60 Pipe connection S Open vent screw and bleed piping. Close vent screw (tightening torque 2 Nm). Seal vent screw with screw cap (tightening torque 9 Nm).

  • Page 63: Installing Horizontal Drive Shaft

    7 Installing VACUTAP® VM® diverter switch insert 7.10 Installing horizontal drive shaft Secure horizontal drive shaft between upper gear unit and bevel gear with coupling pieces and 4 or 6 screws. Refer to the drive shaft operating instructions for details. Figure 61 Horizontal drive shaft ©...
  • Page 64 7 Installing VACUTAP® VM® diverter switch insert Use hose ties to secure guard plate to horizontal drive shaft. Figure 62 Guard plate OILTAP® M, MS/VACUTAP® VM® 2888956/00 EN © Maschinenfabrik Reinhausen 2012...

  • Page 65: Commissioning The Transformer

    8 Commissioning the transformer Commissioning the transformer Preparatory work/tests Check the following before taking the transformer back into operation: 8.1.1 Checking motor-drive unit's reversal value If the on-load tap-changer is operated with a monitoring system, please con- tact Maschinenfabrik Reinhausen Technical Service with regard to the rever- sal value.

  • Page 66: Tapmotion® Td

    8 Commissioning the transformer 8.1.4 TAPMOTION® TD If you are using TAPMOTION® TD for the transformer ratio test, please con- tact Maschinenfabrik Reinhausen Technical Service for assistance. 8.1.5 Centering motor-drive unit ► Ensure that the motor-drive unit is correctly centered (see operating in- structions for appropriate motor-drive unit).

  • Page 67: Looping In Signaling Contact That Indicates That The Oil Has Fallen Below The Minimum Oil Level

    8 Commissioning the transformer Make sure that in each operating position the tap position indicators of motor-drive unit and on-load tap-changer (inspection window in the on- load tap-changer head) read the same position. Check, in both end positions, the function of the electrical and mechanical end stop (see operating instructions for corresponding motor-drive unit).
  • Page 68 8 Commissioning the transformer NOTICE Damage to on-load tap-changer and transformer from inrush current impulse! An inrush current impulse which has not fully subsided can damage the on-load tap-changer and transformer in the event of an on-load tap changing operation! ►...

  • Page 69: Monitoring During Operation

    9 Monitoring during operation Monitoring during operation WARNING! Danger of death or severe injury! Danger of death or severe injury from explosive gases under the on-load tap-changer cover, in the pipework system, in the oil conservator or at the dehydrating breather opening! ►...
  • Page 70 9 Monitoring during operation  perfect condition of the silica gel breather for the on-load tap-changer oil conservator The insulating oils in the transformer, including the on-load tap-changer, are to be monitored by the operator following the appropriate rules and regula- tions.

  • Page 71: Troubleshooting

    10 Troubleshooting Troubleshooting WARNING! Danger of death or severe injury! Danger of death or severe injury from explosive gases under the on-load tap-changer cover, in the pipework system, in the oil conservator or at the dehydrating breather opening! ► Ensure that there are no naked flames, hot surfaces or sparks (e.g. caused by static charging) in the immediate surroundings and that none occur.
  • Page 72 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 RS 2001 protective relay or addi- tional protective devices have been tripped, please inform your authorized MR representative, the transformer manufacturer or contact us directly at:...
  • Page 73 Noises on drive shaft or motor-drive Check that hose clips and guard plates are seated unit when changing tap position correctly. 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.

  • Page 75: Maintenance

    If maintenance is not carried out by our Technical Service department, please ensure that the personnel who carry out the maintenance are trained by MR or are otherwise suitably qualified to carry out the work. In such cases, we would ask you to forward to us a report on the maintenance performed so we can update our maintenance files.
  • Page 76 11 Maintenance Maintenance should be performed on the on-load tap-changer after 300,000 tap-change operations. A label on the inside of the door of the ED motor-drive unit clearly specifies the relevant maintenance interval. Figure 63 Label showing maintenance intervals Door Label The diverter switch insert must be replaced after 1,200,000 tap change opera- tions.

  • Page 77: Oil Change

    11 Maintenance 11.3 Oil change 11.3.1 Oil to use NOTICE Damage to on-load tap-changer resulting from switching at impermissible oil temperatures! Switching the on-load tap-changer at impermissible oil temperatures will damage it! ► The on-load tap-changer can be operated in the temperature range of the surrounding transformer oil of between -25 °...

  • Page 78: Mr Worldwide

    Italy Reinhausen Italia S.r.l. South Africa Brazil Via Alserio, 16 Reinhausen South Africa (Pty) Ltd. MR do Brasil Indústria Mecánica Ltda. 20159 Milan No. 15, Third Street, Booysens Reserve Av. Elias Yazbek, 465 Phone: +39 02 6943471 Johannesburg CEP: 06803-000...
  • Page 79 2888956/00 EN  03/12  F0296300 Maschinenfabrik Reinhausen GmbH +49 941 4090 0 www.reinhausen.com Falkensteinstrasse 8 +49 941 4090 7001 93059 Regensburg, Germany sales@reinhausen.com...

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