MR VACUTAP VR-Ex Installation And Commissioning Instructions Download Page 23 | Manualshive

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3 Product description

Maschinenfabrik Reinhausen GmbH 2020

23

7545652/00 EN

VACUTAP

®

VR-Ex

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

▪ Ex drive shaft with coupling parts and bevel gear

▪ Ex protective relay

▪ Technical files

Please refer to the delivery slip for full details of scope of delivery.

On-load tap-changers can also be provided as an on-load tap-changer set
with a common motor-drive unit.

Note the following information:

▪ Check the shipment for completeness on the basis of the shipping docu-

ments.

▪ Store the parts in a dry place until installation

▪ The product must remain in its airtight, protective wrapping and may only

be removed immediately before installation

You will find more information in the "Packaging, transport, and stor-
age" [

Section 4, Page 35] chapter.

3.2 On-load tap-changer

3.2.1 Function description

On-load tap-changers are used to adjust the transmission ratio of transform-
ers without interrupting the load flow. This makes it possible to compensate
for aspects such as fluctuations in voltage occurring in the power transmis-
sion grid. For this purpose, on-load tap-changers are fitted in transformers
and connected to the active part of the transformer.

A motor-drive unit which receives a control impulse (e.g. from a voltage reg-
ulator) changes the operating position of the on-load tap-changer, as a result
of which the transformer's transmission ratio is adapted to the prevailing op-
erating requirements.

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Summary of Contents for VACUTAP VR-Ex

Page 1: ...On load tap changer VACUTAP VR Ex Installation and commissioning instructions 7545652 00 EN Irm 700 1 300 A selector sizes RC RD RDE RE RF RES ...

Page 2: ... for compensation All rights reserved in the event of the granting of patents utility models or designs The product may have been altered since this document was published We reserve the right to change the technical data design and scope of supply Generally the information provided and agreements made when processing the individual quotations and orders are binding The original operating instruct...

Page 3: ...cation range of the on load tap changer 14 2 4 2 Standards and regulations 16 2 5 Measures for ensuring compliance with explosion protection requirements 17 2 5 1 Measures taken by the manufacturer 17 2 5 2 Measures to be taken by the transformer manufacturer operator 17 2 6 Personnel qualification 20 2 7 Personal protective equipment 22 3 Product description 23 3 1 Scope of delivery 23 3 2 On loa...

Page 4: ...nk 95 5 3 7 Filling the oil compartment of the on load tap changer with insulating fluid 109 5 3 8 Performing transformer ratio test after drying 110 5 4 Installing on load tap changer in transformer bell type tank version 111 5 4 1 Inserting on load tap changer into supporting structure 111 5 4 2 Connecting the tap winding and on load tap changer take off lead 130 5 4 3 Performing transformer rat...

Page 5: ... 6 2 3 Transport with empty transformer tank 216 6 3 Commissioning transformer at operating site 217 6 3 1 Filling the oil compartment of the on load tap changer with insulating fluid 217 6 3 2 Bleeding on load tap changer head and suction pipe 218 6 3 3 Checking motor drive unit 220 6 3 4 Checking protective relay 221 6 3 5 Commissioning the transformer 222 7 Fault elimination 223 7 1 Tripping th...

Page 6: ... 235 9 1 2 10009917 236 9 2 On load tap changer head 237 9 2 1 720847 238 9 2 2 720781 239 9 2 3 895168 240 9 2 4 892916 241 9 2 5 890183 242 9 2 6 723015 243 9 2 7 720845 244 9 2 8 766161 245 9 3 Adjustment plans 246 9 3 1 10017237 247 9 3 2 10017239 248 9 3 3 10017238 249 9 3 4 10017291 250 9 3 5 10017294 251 9 3 6 10017293 252 Glossary 253 ...

Page 7: ...nfabrik Reinhausen GmbH Falkensteinstraße 8 93059 Regensburg Tel 49 9 41 40 90 0 E mail sales reinhausen com Further information on the product and copies of this technical file are avail able from this address if required 1 2 Completeness This technical file is incomplete without the supporting documents The following documents are considered supporting documents Unpacking instructions Supplement...

Page 8: ...ngs relating to sec tions Embedded warnings use the following format DANGER Instruction for avoiding a dangerous situation 1 4 1 3 Signal words and pictograms The following signal words are used Signal word Definition DANGER Indicates a hazardous situation which if not avoided will result in death or serious injury WARNING Indicates a hazardous situation which if not avoided could result in death ...

Page 9: ...derstanding of particular procedures In this technical file it is laid out as follows Important information 1 4 3 Instruction system This technical file contains single step and multi step instructions Single step instructions Instructions which consist of only a single process step are structured as fol lows Aim of action ü Requirements optional Step 1 of 1 ð Result of step optional ð Result of a...

Page 10: ...uction Maschinenfabrik Reinhausen GmbH 2020 10 7545652 00 EN VACUTAP VR Ex 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 ...

Page 11: ...nstallation and operation to removal and disposal The following is considered appropriate use Use the product only with the transformer specified in the order Only operate the product with the versions of the motor drive unit drive shaft and protective relay that have been approved for use in explosive ar eas The serial numbers of on load tap changer and on load tap changer ac cessories drive driv...

Page 12: ...plies to the affected transformer itself just as it does to transformers electrically connected in parallel or serially or other electrical machines Higher voltages may occur due to transformer overexcitation following load shedding for example Operations outside of the permitted operating conditions can lead to injury to persons and damage to the product Prevent any such operations outside of the...

Page 13: ...losive atmospheres Safety markings Warning signs and safety information plates are safety markings on the product They are an important aspect of the safety concept Observe all safety markings on the product Make sure all safety markings on the product remain intact and legible Replace safety markings that are damaged or missing Ambient conditions To ensure reliable and safe operation the product ...

Page 14: ...ith Maschinenfabrik Rein hausen GmbH Spare parts Spare parts not approved by Maschinenfabrik Reinhausen GmbH may lead to physical injury damage to the product and malfunctions Only use spare parts that have been approved by Maschinenfabrik Rein hausen GmbH Contact Maschinenfabrik Reinhausen GmbH 2 4 Standards and regulations 2 4 1 Application range of the on load tap changer The on load tap change...

Page 15: ...present continuously for long periods or frequently 2G 1 2D 21 Equipment in this category is intended for use in ar eas in which explosive atmospheres caused by gases vapors mists or air dust mixtures occur oc casionally 3G 2 3D 22 Equipment in this category is intended for use in ar eas in which explosive atmospheres caused by gases vapors mists or air dust mixtures are un likely to occur or if t...

Page 16: ...50 C T3 200 C 200 C 300 C T4 135 C 135 C 200 C T5 100 C 100 C 135 C T6 85 C 85 C 100 C Table 8 Temperature classes Equipment protection level EPL number 8 The EPL indicates the level of protection defined for a device based on the level of probability of ignition and taking into account the differences be tween potentially explosive gas atmospheres potentially explosive dust at mospheres and poten...

Page 17: ...compartment A temperature sensor is provided in the on load tap changer head cover for monitoring the oil temperature in the diverter switch oil compartment The corresponding temperature monitoring relay is in the TAPMOTION ED Ex Temperature monitoring prevents further switching of the on load tap changer when the maximum permitted temperature is reached This maxi mum permitted temperature is fact...

Page 18: ...g oil is present in the diverter switch oil compartment at all times Figure 1 On load tap changer oil system 1 Diverter switch oil compartment 5 Signaling contacts 2 Temperature sensor 6 Oil conservator 3 Protective relay 7 Dehydrating breather 4 Level indicator 2 5 2 3 Oil conservator to be used The oil conservator of the on load tap changer ensures that sufficient insu lating oil is present in t...

Page 19: ...he circuit breaker will immediately de energize the transformer when the oil level in the oil conservator falls below this minimum 2 5 2 3 4 Insulating oil to be used When filling the diverter switch oil compartment and its oil conservator use only new mineral insulating oil for transformers in accordance with IEC 60296 Specification for unused mineral insulating oils for transformers and switchge...

Page 20: ...lly painted The contact surface of the on load tap changer head is primed ex factory The through holes are primed and partially painted The transformer manufacturer is responsible for the design of the mating surfaces on the transformer and piping and that of the screw connections needed for these attachments 1 Provide suitable sealing to prevent electrolytes from entering sealing sur faces and ho...

Page 21: ...nd the poten tial dangers in the event of inappropriate handling as well as the protective devices and safety measures The electrically trained person works exclu sively under the guidance and supervision of an electrically skilled person Operator The operator uses and operates the product in line with this technical file The operating company provides the operator with instruction and training on...

Page 22: ... a low tearing strength with tight sleeves and with no protruding parts It mainly serves to protect the wearer against being caught by moving machine parts Safety shoes To protect against falling heavy objects and slipping on slippery surfaces Safety glasses To protect the eyes from flying parts and splashing liq uids Visor To protect the face from flying parts and splashing liq uids or other dang...

Page 23: ... the parts in a dry place until installation The product must remain in its airtight protective wrapping and may only be removed immediately before installation You will find more information in the Packaging transport and stor age Section 4 Page 35 chapter 3 2 On load tap changer 3 2 1 Function description On load tap changers are used to adjust the transmission ratio of transform ers without int...

Page 24: ...ar 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 Design versions The following drawing shows the main components of the on load tap changer You can find a detailed drawing of the on load tap changer in the Draw ings Section 9 Page 234 section ...

Page 25: ...n GmbH 2020 25 7545652 00 EN VACUTAP VR Ex Figure 4 On load tap changer design 1 On load tap changer head 2 Upper gear unit 3 Pipe bend 4 Oil compartment 5 Tap selector 6 Change over selector optional 7 On load tap changer head cover 8 Rupture disk ...

Page 26: ...tion S features a vent screw and can be con nected to a pipe that ends with a drain valve on the side of the transformer tank at operating height If the on load tap changer is fitted with an oil suc tion pipe the on load tap changer can be completely emptied via pipe con nection S Pipe connection R Pipe connection R is intended for attachment of the protective relay and con nection of the on load ...

Page 27: ...ry for drying filling with insulating fluid and transportation of the transformer 3 2 3 Nameplate and serial number The nameplate with serial number is on the on load tap changer head cover Figure 6 Nameplate The serial number can also be found on the selector Figure 7 Serial number 3 2 4 Protective devices The on load tap changer is equipped with the following protective devices ...

Page 28: ... in the dry reed magnetic switch is thereby actuated the circuit breakers are tripped and the trans former is de energized The protective relay is a component of an on load tap changer filled with in sulating fluid and its properties conform to the respective applicable version of IEC publication 60214 1 Diverter switch operations at rated switching capacity or at permissible over load will not ca...

Page 29: ...ion 2 Nameplate View from above Figure 10 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 11 Connection terminal ...

Page 30: ...to a defined overpressure in the oil compartment of the on load tap changer 3 2 4 3 Temperature monitoring The temperature monitoring system monitors the temperature of the insulat ing fluid in the oil compartment of the on load tap changer 3 3 Drive shaft 3 3 1 Function description The drive shaft is the mechanical connection between the drive and the on load tap changer head The bevel gear chang...

Page 31: ...VACUTAP VR Ex 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 12 Explosion proof drive shaft with insulator ...

Page 32: ...l The design of the explosion proof drive shaft is described in this section Figure 13 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 10 Adapter ring 11 Protective cover ...

Page 33: ...iguration V 1 min Intermediate bearing Middle of hand crank middle of bevel gear maximum permissible axial offset 2 706 mm If the maximum value of 2472 mm is exceeded the use of an intermediate bearing is necessary V 1 2472 mm without in termediate bearing V 1 2472 mm with inter mediate bearing ...

Page 34: ...scription Maschinenfabrik Reinhausen GmbH 2020 34 7545652 00 EN VACUTAP VR Ex 3 3 3 Identification plate The identification plate is on the telescopic protective tube Figure 14 Position of the identification plate ...

Page 35: ... marking on the packaging states if for example the on load tap changer or selector has been packed upright Never stack these crates General rule Do not stack crates above a height of 1 5 m For other crates Only stack up to 2 equally sized crates on top of one an other The packaging is suitable to ensure undamaged and fully functional means of transportation in compliance with local transportation...

Page 36: ...allet secure it sufficiently Only trained and authorized persons may select the sling gear and se cure the load Do not walk under the suspended load Use means of transport and lifting gear with a sufficient carrying capacity in accordance with the weight stated on the delivery slip In addition to oscillation stress jolts must also be expected during trans portation In order to prevent possible dam...

Page 37: ...kaging is damaged do not under any circumstances install or commission the packaged goods Either re dry the dried packaged goods as per the operating instructions or contact the manufacturer to agree on how to proceed Identify the damaged parts Hidden damage When damages are not determined until unpacking after receipt of the ship ment hidden damage proceed as follows Make the party responsible fo...

Page 38: ...ackaging to lose its sealing function If the product is installed more than 6 months after delivery suitable mea sures must be taken without delay The following measures can be used Correctly regenerate the drying agent and restore the sealed packaging Unpack the packed goods and store in a suitable storage space well ven tilated as dust free as possible humidity 50 where possible 4 4 Unpacking sh...

Page 39: ...o not reach into the selector change over selector or potential connec tion unit during tap change operations Do not switch the on load tap changer during work on the selector change over selector or potential connection unit 5 1 Installation information Note the following information for the installation 1 Use the lifting straps provided to unpack and for transport by crane 2 During installation ...

Page 40: ...transformer 5 2 1 Fitting mounting flange on transformer cover A mounting flange is required for fitting the on load tap changer head on the transformer cover This can be supplied as an option or can be produced by the customer Mounting flanges made by the customer must comply with the installation drawings in the appendix NOTICE Fit mounting flange on transformer cover pressure tight En sure that...

Page 41: ...ansformer cover standard on load tap changer head version You can lower the oil compartment of on load tap changers with Um 362 kV through the opening in the mounting flange without separating the top part of the on load tap changer head from the bottom part 1 CAUTION An unstably positioned oil compartment may tip over re sulting in injuries or property damage Place the oil compartment on a level ...

Page 42: ... Unsuitable gaskets may lead to oil escaping and therefore to damage to the on load tap changer Place a gasket suitable for the insu lating medium in use on the mounting flange Clean the sealing surfaces on the mounting flange and on load tap changer head Figure 17 Sealing surfaces gasket ...

Page 43: ...he 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 Figure 18 Lowering oil compartment 5 Check that the on load tap changer head is mounted in the position speci fied by the design ...

Page 44: ...00 EN VACUTAP VR Ex 6 Screw the on load tap changer head to the mounting flange Figure 19 On load tap changer head with mounting flange 7 Remove the blocking strip from the coupling of the oil compartment base Figure 20 Oil compartment base with blocking strip ...

Page 45: ...d 5 3 1 2 1 Lifting top part of on load tap changer head off supporting flange bottom part 5 3 1 2 1 1 Removing on load tap changer head cover 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 C...

Page 46: ...e DANGER Electric shock If supply voltage is applied to the tap change supervisory device this can result in electric shock Disconnect the tap change supervisory device from the supply voltage and secure it to prevent it from being switched back on again NOTICE Damage to the tap change supervisory device Removing the tap change supervisory device without due care may damage the tap change supervis...

Page 47: ...2020 47 7545652 00 EN VACUTAP VR Ex 1 Take the tap change supervisory device plug connector out of the mount ing bracket and disconnect it Figure 24 Plug connector 2 Remove nuts and locking elements on the mounting plate Figure 25 Mounting plate ...

Page 48: ...ove mounting plate with tap change supervisory device and drive shaft Figure 26 Mounting plate with tap change supervisory device and drive shaft 4 Lift the lead of the tap change supervisory device off the spacer bolt Figure 27 Spacer bolt and lead of the tap change supervisory device ...

Page 49: ... the tap change supervisory device out of the on load tap changer head Figure 28 Lead of tap change supervisory device 6 Remove spacer bolt with locking element Figure 29 Spacer bolt 5 3 1 2 1 4 Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 30 Oil suction pipe ...

Page 50: ... 31 Oil suction pipe 3 Remove the mounting bracket Figure 32 Mounting bracket 5 3 1 2 1 5 Lifting top part of on load tap changer head off bottom part 1 Remove nuts and locking elements joining top part and bottom part of on load tap changer head Figure 33 Nuts and locking elements joining the top part and bottom part of the on load tap changer head ...

Page 51: ...ositioning the top part of the on load tap changer head on the transformer cover 1 NOTICE Unsuitable gaskets may lead to oil escaping and therefore to damage to the on load tap changer Place a gasket suitable for the insu lating medium in use on the mounting flange Clean the sealing surfaces on the mounting flange and top part of the on load tap changer head Figure 35 Mounting flange with gasket ...

Page 52: ...over and align based on the later mounting position Never lift the oil compartment by the circumferen tial shielding ring or the connecting screws of the supporting flange Figure 36 Lifting the oil compartment 3 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 ta...

Page 53: ...hanger with the specified lifting traverse and never with the connection screws of the supporting flange You can either use lifting equipment or the special lifting device to connect the oil compartment to the top part of the on load tap changer head The special lifting device option is described below 1 Carefully insert lifting device into the oil compartment with claws turned in Figure 38 Liftin...

Page 54: ...together leave the pins for the mounting plate of the tap change supervi sory device the pins for the mounting bracket of the oil suction pipe and the spacer bolts for the lead of the tap change supervisory device free 1 Screw top part of on load tap changer head to bottom part using nuts and locking elements Figure 40 Screwing the top part of the on load tap changer head to the bottom part ...

Page 55: ... 55 7545652 00 EN VACUTAP VR Ex 2 Remove the lifting device with the claws turned in Figure 41 Removing lifting device 3 Screw the on load tap changer head to the mounting flange Figure 42 Screwing the on load tap changer head to the mounting flange ...

Page 56: ...6 7545652 00 EN VACUTAP VR Ex 4 Remove the blocking strip from the coupling of the oil compartment base Figure 43 Oil compartment base with blocking strip 5 3 1 2 3 2 Inserting oil suction pipe 1 Fasten the mounting bracket Figure 44 Mounting bracket ...

Page 57: ...CUTAP VR Ex 2 Insert oil suction pipe into on load tap changer head Figure 45 Inserting oil suction pipe 3 Fasten oil suction pipe to mounting bracket with cable tie provided Turn the cable tie so the closure is facing in toward the mounting bracket Figure 46 Cable tie ...

Page 58: ...ting the tap change supervisory device 1 Insert mounting plate with tap change supervisory device and drive shaft Figure 47 Mounting plate with tap change supervisory device and drive shaft 2 Check that drive shaft is seated correctly in the plug connector Figure 48 Drive shaft and plug connector ...

Page 59: ...2 00 EN VACUTAP VR Ex 3 Attach mounting plate Figure 49 Mounting plate 4 Attach spacer bolt for fastening the lead of the tap change supervisory de vice Figure 50 Spacer bolt 5 Fasten lead of tap change supervisory device to spacer bolt Figure 51 Spacer bolt ...

Page 60: ...lug connector outside its bracket Figure 52 Plug connector 7 Insert plug connector into the bracket Figure 53 Plug connector in bracket 5 3 1 2 3 4 Inserting tap position indicator disk Due to the coupling pin the tap position indicator disk can only be installed when in the correct position ...

Page 61: ...nclean sealing surfaces lead to in sulating fluid escaping and therefore to damage to the on load tap changer Ensure that the o ring is positioned untwisted in the on load tap changer head cover Ensure that the o ring does not become damaged when mounting the cover Ensure that the sealing surfaces on the on load tap changer head cover and on load tap changer head are clean 1 Check that the feather...

Page 62: ...the on load tap changer head in such a way that the red triangular markings on the on load tap changer head and the on load tap changer head cover are aligned Figure 56 On load tap changer head cover with o ring 3 Screw the on load tap changer head cover onto the on load tap changer head Figure 57 On load tap changer head cover ...

Page 63: ...63 7545652 00 EN VACUTAP VR Ex 5 3 1 3 Fastening potential connection unit to selector 1 Lift the potential connection unit by the pre mounted lifting straps and po sition it above the change over selector Figure 58 Lifting potential connection unit ...

Page 64: ... over selector so that the studs on the carriers engage with the openings on the potential connection unit and the drilled holes in the car riers and potential connection unit align Figure 59 Lowering potential connection unit 3 Carefully drive in the locking pins provided from the outside until they are seated centrally Figure 60 Fastening potential connection unit ...

Page 65: ...potential connection unit Figure 61 Removing lifting straps 5 Only for version without tie in switch Attach 3 or 6 potential connection leads to the change over selector Attach screening caps in the process The fixing materials and screening caps are included in the delivery scope Figure 62 Potential connection leads ...

Page 66: ...roperty damage Place the selector with transport pallet on a level surface and secure it against tipping 2 Remove red colored packaging material and transport material from the selector Only remove the red supports if present after fixing the selector to the oil compartment 3 Remove plastic bag with fastening materials from the selector and keep it ready Figure 63 Plastic bag with fastening materi...

Page 67: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 67 7545652 00 EN VACUTAP VR Ex Figure 64 Plastic bag with fastening materials ...

Page 68: ...nhausen GmbH 2020 68 7545652 00 EN VACUTAP VR Ex 4 Remove the blocking strip from the selector coupling Once the blocking strip is removed the selector coupling may no longer be turned Figure 65 Selector coupling with blocking strip ...

Page 69: ...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 7 Align the position of both coupling parts and attachment points on the oil compartment and the selector w...

Page 70: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 70 7545652 00 EN VACUTAP VR Ex 8 Screw selector onto oil compartment Figure 67 Selector with oil compartment ...

Page 71: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 71 7545652 00 EN VACUTAP VR Ex Figure 68 Screwing selector onto oil compartment ...

Page 72: ...ng 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 Figure 69 VACUTAP VRS ...

Page 73: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 73 7545652 00 EN VACUTAP VR Ex Figure 70 VACUTAP VRS ...

Page 74: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 74 7545652 00 EN VACUTAP VR Ex Figure 71 VACUTAP VRM VRH VRX ...

Page 75: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 75 7545652 00 EN VACUTAP VR Ex Figure 72 VACUTAP VRM VRH VRX ...

Page 76: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 76 7545652 00 EN VACUTAP VR Ex Figure 73 VACUTAP VRL VRH ...

Page 77: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 77 7545652 00 EN VACUTAP VR Ex Figure 74 VACUTAP VRL VRH ...

Page 78: ...P VR Ex 10 Remove red supports on selector base if present Figure 75 Supports 5 3 1 5 Fastening potential connection unit to oil compartment You only have to fasten the potential connection unit to the oil compartment if the potential connection unit has a mounting bracket ...

Page 79: ...d 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 Establish connections carefully Do not twist connection contacts Connect connecting leads without warping or deforming If necessary use an expansion loop for connecting leads Fit screening caps provided to screw connection...

Page 80: ...pe The through holes of the connection contacts are horizontal as standard 2 Make sure that the tap winding connecting leads are not exerting any me chanical loads on the selector 3 Take suitable measures to ensure that every screw connection cannot come loose or settle e g by using clamping washers Attach the screen ing caps as shown in the illustration 4 Close the screening caps and make sure th...

Page 81: ...ng 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 Tap winding connecting leads in the area of the change over selector have to be routed such that they are at a sufficient distance from the change over selector s moving parts Figure 78 Change over selector connection contacts for revers...

Page 82: ...lector connection 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 Tap winding connecting leads in the area of the change over selector have to be routed such that they are at a sufficient distance from the change over select...

Page 83: ...nenfabrik Reinhausen GmbH 2020 83 7545652 00 EN VACUTAP VR Ex Figure 80 Change over selector connection contacts for coarse tap selector connection Figure 81 Route tap winding connecting leads with sufficient clearance ...

Page 84: ...ing materials are not included in the scope of delivery Make sure that the leads are not exerting any mechani cal loads on the potential connection unit Figure 82 Angle connector of potential connection unit 1 Angle connector for customer connection 5 3 2 5 Connecting on load tap changer take off lead 1 Connect the on load tap changer take off lead to any through hole on the take off ring using th...

Page 85: ...nenfabrik Reinhausen GmbH 2020 85 7545652 00 EN VACUTAP VR Ex 2 Take suitable measures to ensure the screw connection cannot come loose or settle e g by using clamping washers Figure 83 Take off ring on oil compartment ...

Page 86: ...e indicated in the connection diagram supplied with the delivery For multiple column applications with a shared drive link all on load tap changer heads to one another using the horizontal drive shaft parts 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 2...

Page 87: ...e 11 Maximum permitted measured currents when performing DC resistance measurement on transformer 5 3 5 Drying on load tap changer in autoclave 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 change...

Page 88: ...used by the build up of static charge in the imme diate surroundings and that none occur De energize all auxiliary circuits for example tap change supervisory de vice pressure relief device pressure monitoring device before removing the on load tap changer head cover Do not operate any electrical devices during the work e g risk of sparks from impact wrench NOTICE Damage to the on load tap changer...

Page 89: ...ospheric pressure with a temperature increase of approximately 10 C h to a final temperature of maximum 110 C 2 Pre dry the on load tap changer in circulating air at a maximum tempera ture of 110 C for a period of at least 20 hours 3 Vacuum dry on load tap changer at between 105 C and maximum 125 C for at least 50 hours 4 Residual pressure of no more than 10 3 bar 5 3 5 1 4 Securing on load tap ch...

Page 90: ...ere necessary use Vaseline to secure the feather key against falling out Figure 86 Feather key 2 Position the on load tap changer head cover on the on load tap changer head in such a way that the red triangular markings on the on load tap changer head and the on load tap changer head cover are aligned Figure 87 On load tap changer head cover with o ring ...

Page 91: ...tment position is indicated in the on load tap changer connection diagram in cluded in delivery 5 3 5 2 2 Removing on load tap changer head cover WARNING Danger of explosion Explosive gases under the on load tap changer head cover can deflagrate or explode and result in severe injury or death Ensure that there are no ignition sources such as open flames hot sur faces or sparks e g caused by the bu...

Page 92: ...rts are accounted for 1 Ensure that the inspection window is sealed off with the cover 2 Remove the screws and washers from the on load tap changer head cover Figure 89 On load tap changer head cover 3 Remove on load tap changer head cover Figure 90 On load tap changer head cover 5 3 5 2 3 Opening kerosene drain plug NOTICE Never remove the kerosene drain plug completely Only un screw the kerosene...

Page 93: ...toring device pressure relief device bevel gear temperature sensor oil filter unit 1 Supply kerosene vapor at a temperature of around 90 C Keep this tem perature constant for 3 to 4 hours 2 Increase the kerosene vapor temperature by approx 10 C hour to the de sired final temperature of max 125 C at the on load tap changer 3 Vacuum dry on load tap changer at between 105 C and maximum 125 C for at l...

Page 94: ...efore to damage to the on load tap changer Ensure that the o ring is positioned untwisted in the on load tap changer head cover Ensure that the o ring does not become damaged when mounting the cover Ensure that the sealing surfaces on the on load tap changer head cover and on load tap changer head are clean 1 Check that the feather key is securely positioned in the adapter shaft Where necessary us...

Page 95: ...e 93 On load tap changer head cover with o ring 3 Screw the on load tap changer head cover onto the on load tap changer head Figure 94 On load tap changer head cover 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 ch...

Page 96: ...p changer head 2 Seal off unused pipe connections with a suitable blank cover Figure 95 Connecting lead Vacuum drying in the transformer tank 1 Heat up the on load tap changer in air at atmospheric pressure with a temperature increase of approximately 10 C h to a final temperature of maximum 110 C 2 Pre dry the on load tap changer in circulating air at a maximum tempera ture of 110 C for a period ...

Page 97: ... of explosion Explosive gases under the on load tap changer head cover can deflagrate or explode and result in severe injury or death Ensure that there are no ignition sources such as open flames hot sur faces or sparks e g caused by the build up of static charge in the imme diate surroundings and that none occur De energize all auxiliary circuits for example tap change supervisory de vice pressur...

Page 98: ...m the on load tap changer head cover Figure 96 On load tap changer head cover 3 Remove on load tap changer head cover Figure 97 On load tap changer head cover 5 3 6 2 1 3 Removing tap position indicator disk Pull spring clip off shaft end and remove tap position indicator disk Figure 98 Tap position indicator disk ...

Page 99: ...coupling tube so that the markings align either by directly turning the shielding ring while wearing gloves or by using an operating wrench Figure 99 Aligning the coupling tube 2 Insert the lifting gear in the eyebolts of the coupling tube and position ver tically above the diverter switch insert 3 Lift the diverter switch insert slowly and vertically out of oil compartment ensuring that the prote...

Page 100: ...el surface and secure it against tipping Do not operate the diverter switch insert or change the position of the selector coupling when the di verter switch insert is not installed 5 3 6 2 2 Opening kerosene drain plug NOTICE Unscrew kerosene drain plug with extended socket wrench counter clockwise until it starts to offer resistance to turning Never un screw the kerosene drain plug all the way Fi...

Page 101: ...00 EN VACUTAP VR Ex 5 3 6 2 3 Inserting diverter switch insert 5 3 6 2 3 1 Inserting diverter switch insert 1 To fit the diverter switch insert ensure that the selector coupling is in the adjustment position Figure 102 Adjustment markings in oil compartment base ...

Page 102: ...2 00 EN VACUTAP VR Ex 2 NOTICE Damage to the on load tap changer by mixing up the diverter switch inserts Ensure that there are the same the number of markings on the diverter switch insert and on the on load tap changer head Figure 103 Same number of markings ...

Page 103: ...diverter switch insert are not aligned turn the coupling tube so that the markings align either by di rectly turning the shielding ring while wearing gloves or by using an oper ating wrench Switch over the diverter switch insert if necessary Figure 104 Markings on the diverter switch insert 4 Attach lifting gear to diverter switch insert and position diverter switch in sert over oil compartment ...

Page 104: ...nsure that the protective ring is on the indicator drive shaft Slowly lower diverter switch insert until it meets the oil compartment base The shape of the selector coupling ensures that coupling is only possible in the correct position The oil compartment of on load tap changers with Um 300 kV contains an additional guide tube Figure 105 Markings on the diverter switch insert and the on load tap ...

Page 105: ...be 13 2 mm Figure 106 Distance between the upper rim edge of the adapter shaft of the diverter switch in sert and the mounting surface of the on load tap changer head 5 3 6 2 3 2 Inserting tap position indicator disk Due to the coupling pin the tap position indicator disk can only be installed when in the correct position Place tap position indicator disk on indicator drive shaft slide spring clip...

Page 106: ...refore to damage to the on load tap changer Ensure that the o ring is positioned untwisted in the on load tap changer head cover Ensure that the o ring does not become damaged when mounting the cover Ensure that the sealing surfaces on the on load tap changer head cover and on load tap changer head are clean 1 Check that the feather key is securely positioned in the adapter shaft Where necessary u...

Page 107: ...n the on load tap changer head and the on load tap changer head cover are aligned Figure 109 On load tap changer head cover with o ring 3 Screw the on load tap changer head cover onto the on load tap changer head Figure 110 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 shar...

Page 108: ...ug 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 1 Remove Section 5 3 6 2 1 Page 97 the diverter switch insert 2 NOTICE An open kerosene drain plug leads to insulating fluid esc...

Page 109: ...ved by the transformer manufacturer you can use synthetic es ters in accordance with IEC 61099 approved by Maschinenfabrik Rein hausen GmbH 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 on...

Page 110: ...il compartment of the on load tap changer is completely filled with insulating fluid Only switch the on load tap changer from one operating position to the next via the upper gear unit You can use a short tube diameter 25 mm with screwed in coupling bolt diameter 12 mm with a hand wheel or crank for this for example When using a drill do not exceed a maximum speed of 250 rpm Always check the opera...

Page 111: ...ns in the same direction in order to correctly complete the tap change operation 3 Perform the transformer ratio test 4 Repeat the transformer ratio test in all operating positions 5 Switch the on load tap changer into adjustment position see the accom panying connection diagram for the on load tap changer 5 4 Installing on load tap changer in transformer bell type tank version 5 4 1 Inserting on ...

Page 112: ...over selector so that the studs on the carriers engage with the openings on the potential connection unit and the drilled holes in the car riers and potential connection unit align Figure 115 Lowering potential connection unit 3 Carefully drive in the locking pins provided from the outside until they are seated centrally Figure 116 Fastening potential connection unit ...

Page 113: ...otential connection unit Figure 117 Removing lifting straps 5 Only for version without tie in switch Attach 3 or 6 potential connection leads to the change over selector Attach screening caps in the process The fixing materials and screening caps are included in the delivery scope Figure 118 Potential connection leads ...

Page 114: ...age Place the selector with transport pallet on a level surface and secure it against tipping 2 Remove red colored packaging material and transport material from the selector Only remove the red supports if present after inserting the on load tap changer into the supporting structure 3 Remove plastic bag with fastening materials from the selector and keep it ready Figure 119 Plastic bag with faste...

Page 115: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 115 7545652 00 EN VACUTAP VR Ex Figure 120 Plastic bag with fastening materials ...

Page 116: ...hausen GmbH 2020 116 7545652 00 EN VACUTAP VR Ex 4 Remove the blocking strip from the selector coupling Once the blocking strip is removed the selector coupling may no longer be turned Figure 121 Selector coupling with blocking strip ...

Page 117: ...652 00 EN VACUTAP VR Ex Figure 122 Selector coupling with blocking strip 5 CAUTION An unstably positioned oil compartment may tip over re sulting in severe injuries or property damage Place the oil compartment on a level surface and secure it against tipping ...

Page 118: ...CE Lowering the oil compartment without due care can result in the oil compartment and selector colliding and becoming damaged Carefully lower the oil compartment ensuring that the tap selector connecting leads and the potential connection unit if installed are free when lowering the oil compartment and that they do not touch the compartment 9 Align the position of both coupling parts and attachme...

Page 119: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 119 7545652 00 EN VACUTAP VR Ex 10 Screw selector onto oil compartment Figure 124 Selector with oil compartment ...

Page 120: ...ent 11 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 121: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 121 7545652 00 EN VACUTAP VR Ex Figure 126 VACUTAP VRS tap selector connecting leads ...

Page 122: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 122 7545652 00 EN VACUTAP VR Ex Figure 127 VACUTAP VRS tap selector connecting leads ...

Page 123: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 123 7545652 00 EN VACUTAP VR Ex Figure 128 VACUTAP VRM VRH VRX tap selector connecting leads ...

Page 124: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 124 7545652 00 EN VACUTAP VR Ex Figure 129 VACUTAP VRM VRH VRX tap selector connecting leads ...

Page 125: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 125 7545652 00 EN VACUTAP VR Ex Figure 130 VACUTAP VRL VRH tap selector connecting leads ...

Page 126: ... VACUTAP VR Ex Figure 131 VACUTAP VRL VRH tap selector connecting leads 5 4 1 3 Fastening potential connection unit to oil compartment You only have to fasten the potential connection unit to the oil compartment if the potential connection unit has a mounting bracket ...

Page 127: ...127 7545652 00 EN VACUTAP VR Ex Screw the potential connection unit to the take off ring of the oil compart ment Figure 132 Fastening potential connection unit 1 Nut 5 Spring washer 2 Washer 6 Screening cap 3 Spacing sleeve 7 Screw 4 Mounting bracket ...

Page 128: ...p changer Using spacers insert on load tap changer vertically into supporting structure maximum 1 deviation from the vertical so that the on load tap changer reaches its final installation height and only has to be raised a maximum of 5 to 20 mm once the tap winding and on load tap changer take off lead have been connected and the bell type tank fitted Figure 133 On load tap changer with spacers o...

Page 129: ...2 00 EN VACUTAP VR Ex 2 Temporarily fasten on load tap changer to supporting structure The sup porting flange has through holes for this purpose Figure 134 Fastening the on load tap changer 3 Remove red supports on selector base if present Figure 135 Supports ...

Page 130: ... 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 4 2 1 Selector connection contacts 1 Fasten tap winding connecting leads with cable shoes and M12 screws as specified in the connection diagram provided cable shoes and fastening materials are not included in the delivery scope The through holes of the con...

Page 131: ...onnection contacts for reversing change over selector connection 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 Tap winding connecting leads in the area of the change over selector have to be routed such that they are at a ...

Page 132: ...ik Reinhausen GmbH 2020 132 7545652 00 EN VACUTAP VR Ex Figure 137 Change over selector connection contacts for reversing change over selector con nection Figure 138 Route tap winding connecting leads with sufficient clearance ...

Page 133: ...ing 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 Tap winding connecting leads in the area of the change over selector have to be routed such that they are at a sufficient distance from the change over selector s moving parts Figure 139 Change over selector connection contacts for coar...

Page 134: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 134 7545652 00 EN VACUTAP VR Ex Figure 140 Route tap winding connecting leads with sufficient clearance ...

Page 135: ...ing materials are not included in the scope of delivery Make sure that the leads are not exerting any mechani cal loads on the potential connection unit Figure 141 Angle connector of potential connection unit 1 Angle connector for customer connection 5 4 2 5 Connecting on load tap changer take off lead 1 Connect the on load tap changer take off lead to any through hole on the take off ring using t...

Page 136: ...enfabrik Reinhausen GmbH 2020 136 7545652 00 EN VACUTAP VR Ex 2 Take suitable measures to ensure the screw connection cannot come loose or settle e g by using clamping washers Figure 142 Take off ring on oil compartment ...

Page 137: ...re indicated in the connection diagram supplied with the delivery For multiple column applications with a shared drive link all on load tap changer heads to one another using the horizontal drive shaft parts 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 ...

Page 138: ...e 12 Maximum permitted measured currents when performing DC resistance measurement on transformer 5 4 5 Drying on load tap changer in autoclave 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 change...

Page 139: ...used by the build up of static charge in the imme diate surroundings and that none occur De energize all auxiliary circuits for example tap change supervisory de vice pressure relief device pressure monitoring device before removing the on load tap changer head cover Do not operate any electrical devices during the work e g risk of sparks from impact wrench NOTICE Damage to the on load tap changer...

Page 140: ...mospheric pressure with a temperature increase of approximately 10 C h to a final temperature of maximum 110 C 2 Pre dry the on load tap changer in circulating air at a maximum tempera ture of 110 C for a period of at least 20 hours 3 Vacuum dry on load tap changer at between 105 C and maximum 125 C for at least 50 hours 4 Residual pressure of no more than 10 3 bar 5 4 5 1 4 Securing on load tap c...

Page 141: ...ere necessary use Vaseline to secure the feather key against falling out Figure 145 Feather key 2 Position the on load tap changer head cover on the on load tap changer head in such a way that the red triangular markings on the on load tap changer head and the on load tap changer head cover are aligned Figure 146 On load tap changer head cover with o ring ...

Page 142: ...ustment position is indicated in the on load tap changer connection diagram in cluded in delivery 5 4 5 2 2 Removing on load tap changer head cover WARNING Danger of explosion Explosive gases under the on load tap changer head cover can deflagrate or explode and result in severe injury or death Ensure that there are no ignition sources such as open flames hot sur faces or sparks e g caused by the ...

Page 143: ...rts are accounted for 1 Ensure that the inspection window is sealed off with the cover 2 Remove the screws and washers from the on load tap changer head cover Figure 148 On load tap changer head cover 3 Remove on load tap changer head cover Figure 149 On load tap changer head cover 5 4 5 2 3 Opening kerosene drain plug NOTICE Never remove the kerosene drain plug completely Only un screw the kerose...

Page 144: ...itoring device pressure relief device bevel gear temperature sensor oil filter unit 1 Supply kerosene vapor at a temperature of around 90 C Keep this tem perature constant for 3 to 4 hours 2 Increase the kerosene vapor temperature by approx 10 C hour to the de sired final temperature of max 125 C at the on load tap changer 3 Vacuum dry on load tap changer at between 105 C and maximum 125 C for at ...

Page 145: ...efore to damage to the on load tap changer Ensure that the o ring is positioned untwisted in the on load tap changer head cover Ensure that the o ring does not become damaged when mounting the cover Ensure that the sealing surfaces on the on load tap changer head cover and on load tap changer head are clean 1 Check that the feather key is securely positioned in the adapter shaft Where necessary us...

Page 146: ...the on load tap changer head in such a way that the red triangular markings on the on load tap changer head and the on load tap changer head cover are aligned Figure 152 On load tap changer head cover with o ring 3 Screw the on load tap changer head cover onto the on load tap changer head Figure 153 On load tap changer head cover ...

Page 147: ...hat none occur De energize all auxiliary circuits for example tap change supervisory de vice pressure relief device pressure monitoring device before removing the on load tap changer head cover Do not operate any electrical devices during the work e g risk of sparks from impact wrench NOTICE Damage to the on load tap changer Small parts in the oil compartment may block the diverter switch insert t...

Page 148: ...om the on load tap changer head cover Figure 155 On load tap changer head cover 4 Remove on load tap changer head cover Figure 156 On load tap changer head cover 5 4 6 2 Removing tap position indicator disk Pull spring clip off shaft end and remove tap position indicator disk Figure 157 Tap position indicator disk ...

Page 149: ...TAP VR Ex 5 4 6 3 Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 158 Oil suction pipe 2 Pull the oil suction pipe out of the on load tap changer head Figure 159 Oil suction pipe 3 Remove the mounting bracket Figure 160 Mounting bracket ...

Page 150: ...ad tap changer head off supporting flange 1 Remove nuts and locking elements between top part of on load tap changer head and supporting flange Figure 161 Top part of on load tap changer head with nuts 2 Lift top part of on load tap changer head off supporting flange Figure 162 Top part of on load tap changer head ...

Page 151: ...necting 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 163 Supporting flange with o ring 2 Lift the bell type tank over the active part of the transformer Figure 164 Bell type tank ...

Page 152: ...anger head on bell type tank 1 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 Clean the sealing surfaces on the mounting flange and on load tap changer head Figure 165 Mounting flange with gasket ...

Page 153: ...d tap changer head NOTICE Incorrectly lifting the on load tap changer will damage it If the connection screws of the supporting flange are used to lift the on load tap changer the screws may be damaged which makes it impossible to properly screw the on load tap changer and the on load tap changer head together Always lift the on load tap changer with the specified lifting traverse and never with t...

Page 154: ...alignment of on load tap changer head to the sup porting flange will damage the on load tap changer when it is lifted Swing claws of the lifting device outwards use the lifting device to lift the oil com partment Ensure that the triangular markings are aligned and that all sup porting flange stud bolts go easily through the mounting holes of the on load tap changer head Figure 168 Lifting the on l...

Page 155: ...ory device the pins for the mounting bracket of the oil suction pipe and the spacer bolts for the lead of the tap change supervisory device free 1 Screw the top part of the on load tap changer head to the bottom part us ing the nuts and locking elements Figure 169 Screwing the top part of the on load tap changer head to the bottom part 2 Remove the lifting device with the claws turned in Figure 17...

Page 156: ...d tap changer head to the mounting flange Figure 171 Screwing the on load tap changer head to the mounting flange 5 4 7 4 Inserting oil suction pipe 1 Fasten the mounting bracket Figure 172 Mounting bracket 2 Insert oil suction pipe into on load tap changer head Figure 173 Inserting oil suction pipe ...

Page 157: ... indicator disk on indicator drive shaft slide spring clip on to shaft end Figure 175 Tap position indicator disk 5 4 7 6 Securing on load tap changer head cover NOTICE Damage to the on load tap changer A missing or damaged o ring as well as unclean sealing surfaces lead to in sulating fluid escaping and therefore to damage to the on load tap changer Ensure that the o ring is positioned untwisted ...

Page 158: ...ere necessary use Vaseline to secure the feather key against falling out Figure 176 Feather key 2 Position the on load tap changer head cover on the on load tap changer head in such a way that the red triangular markings on the on load tap changer head and the on load tap changer head cover are aligned Figure 177 On load tap changer head cover with o ring ...

Page 159: ...If you want to dry the on load tap changer in the transformer tank fully as semble the transformer first and then undertake drying If drying in the transformer tank the following methods are possible Vacuum drying Vapor phase drying As an alternative to drying the on load tap changer in the transformer tank it can also be dried in an autoclave 5 4 8 1 Vacuum drying in the transformer tank The on l...

Page 160: ... Residual pressure of no more than 10 3 bar 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 4 10 Page 174 5 4 8 2 Vapor phase drying in the transformer tank If you have opened the kerosene drain plug already e g after the trans former ratio test you can begin the drying Section 5 4 ...

Page 161: ...liary circuits for example tap change supervisory de vice pressure relief device pressure monitoring device before removing the on load tap changer head cover Do not operate any electrical devices during the work e g risk of sparks from impact wrench 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 cha...

Page 162: ... 00 EN VACUTAP VR Ex 3 Remove on load tap changer head cover Figure 181 On load tap changer head cover 5 4 8 2 1 3 Removing tap position indicator disk Pull spring clip off shaft end and remove tap position indicator disk Figure 182 Tap position indicator disk ...

Page 163: ...coupling tube so that the markings align either by directly turning the shielding ring while wearing gloves or by using an operating wrench Figure 183 Aligning the coupling tube 2 Insert the lifting gear in the eyebolts of the coupling tube and position ver tically above the diverter switch insert 3 Lift the diverter switch insert slowly and vertically out of oil compartment ensuring that the prot...

Page 164: ...el surface and secure it against tipping Do not operate the diverter switch insert or change the position of the selector coupling when the di verter switch insert is not installed 5 4 8 2 2 Opening kerosene drain plug NOTICE Unscrew kerosene drain plug with extended socket wrench counter clockwise until it starts to offer resistance to turning Never un screw the kerosene drain plug all the way Fi...

Page 165: ...00 EN VACUTAP VR Ex 5 4 8 2 3 Inserting diverter switch insert 5 4 8 2 3 1 Inserting diverter switch insert 1 To fit the diverter switch insert ensure that the selector coupling is in the adjustment position Figure 186 Adjustment markings in oil compartment base ...

Page 166: ...2 00 EN VACUTAP VR Ex 2 NOTICE Damage to the on load tap changer by mixing up the diverter switch inserts Ensure that there are the same the number of markings on the diverter switch insert and on the on load tap changer head Figure 187 Same number of markings ...

Page 167: ...diverter switch insert are not aligned turn the coupling tube so that the markings align either by di rectly turning the shielding ring while wearing gloves or by using an oper ating wrench Switch over the diverter switch insert if necessary Figure 188 Markings on the diverter switch insert 4 Attach lifting gear to diverter switch insert and position diverter switch in sert over oil compartment ...

Page 168: ...nsure that the protective ring is on the indicator drive shaft Slowly lower diverter switch insert until it meets the oil compartment base The shape of the selector coupling ensures that coupling is only possible in the correct position The oil compartment of on load tap changers with Um 300 kV contains an additional guide tube Figure 189 Markings on the diverter switch insert and the on load tap ...

Page 169: ...be 13 2 mm Figure 190 Distance between the upper rim edge of the adapter shaft of the diverter switch in sert and the mounting surface of the on load tap changer head 5 4 8 2 3 2 Inserting tap position indicator disk Due to the coupling pin the tap position indicator disk can only be installed when in the correct position Place tap position indicator disk on indicator drive shaft slide spring clip...

Page 170: ...refore to damage to the on load tap changer Ensure that the o ring is positioned untwisted in the on load tap changer head cover Ensure that the o ring does not become damaged when mounting the cover Ensure that the sealing surfaces on the on load tap changer head cover and on load tap changer head are clean 1 Check that the feather key is securely positioned in the adapter shaft Where necessary u...

Page 171: ...n the on load tap changer head and the on load tap changer head cover are aligned Figure 193 On load tap changer head cover with o ring 3 Screw the on load tap changer head cover onto the on load tap changer head Figure 194 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 shar...

Page 172: ...g 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 1 Remove Section 5 4 8 2 1 Page 160 the diverter switch insert 2 NOTICE An open kerosene drain plug leads to insulating fluid esc...

Page 173: ...ved by the transformer manufacturer you can use synthetic es ters in accordance with IEC 61099 approved by Maschinenfabrik Rein hausen GmbH 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 on...

Page 174: ...il compartment of the on load tap changer is completely filled with insulating fluid Only switch the on load tap changer from one operating position to the next via the upper gear unit You can use a short tube diameter 25 mm with screwed in coupling bolt diameter 12 mm with a hand wheel or crank for this for example When using a drill do not exceed a maximum speed of 250 rpm Always check the opera...

Page 175: ...rically connecting the temperature sensor Size the cable for the electrical connection of the temperature sensors such that you can turn the sensors if necessary when mounting the drive shaft Electrically connect the temperature sensors in accordance with the con nection diagram provided 5 5 2 Installing protective relay in piping and connecting WARNING Danger of explosion Explosive gases in the p...

Page 176: ...n selecting the cir cuit breaker type All circuits and suitable equipment such as isolating de vices must satisfy the requirements on explosion protection applicable in the respective potentially explosive area In addition observe the following It must be easy for the operator to access the isolating device The isolating device must be labeled for the device and the circuits to be isolated The iso...

Page 177: ...act positions for checking electrical continuity are shown in the dimen sional drawing provided 1 Loosen the three screws on the terminal box cover and lift off the terminal box cover Figure 198 Terminal box cover 2 Remove the slotted head screw for potential tie in and remove the termi nal box cover with wire Figure 199 Terminal box cover NOTICE Damage to protective relay Damage to protective rel...

Page 178: ...2 00 EN VACUTAP VR Ex 3 Press OFF test button ð Flap valve is inclined The red indicator is not visible Figure 200 OFF position 4 Press OPERATION test button ð Flap valve is vertical The red indicator appears in the viewing window Figure 201 OPERATION position ...

Page 179: ...ver 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 2 Install protective relay such that it can be easily accessed for subsequent maintenance work 3 Install protective relay with good support and free from vibrations 4 The test buttons ...

Page 180: ...elay to the oil conservator must be routed with an inclination of at least 2 1 2 to ensure the switching gases can escape freely 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 vertica...

Page 181: ...n GmbH 2020 181 7545652 00 EN VACUTAP VR Ex 9 The reference arrow on the terminal box cover must point toward the on load tap changer s oil conservator Figure 205 Reference arrow pointing towards the on load tap changer s oil conservator ...

Page 182: ...er an NC or NO contact in the following variants 2 x NC contact 2 x NO contact 1 x NC contact and 1x NO contact WARNING Risk of death or severe injury Risk of death or severe injury due to improper electrical connection of the protective relay Loop the protective relay into the tripping circuit of the circuit breakers of the transformer to be protected so that the transformer is immediately de ene...

Page 183: ... as follows 1 Connect protective conductor with cable cross section of 1 4 mm2 to cylinder head screw 2 Take off MR dummy plug Figure 207 Dummy plug 3 Insert explosion certified cable bushing into tapped hole on side of termi nal box 4 Loosen the three screws on the terminal box cover and lift off the terminal box cover Figure 208 Terminal box cover ...

Page 184: ...r the protective cover and take off the protective cover Figure 210 Terminal box cover and protective cover 7 Guide explosion certified cable through cable bushing and into protective relay Ensure that the cable gland is well connected and sealed 8 Connect electric cables with cable cross section of 1 4 mm2 to connec tion terminals in accordance with connection diagram 9 Insert the protective cove...

Page 185: ...g the slotted head screw Figure 211 Terminal box cover 11 Attach the terminal box cover and secure with screws Figure 212 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 186: ... 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 Figure 213 Permitted maximum axial displacement of vertical drive shaft ...

Page 187: ...ting 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 You must cut these parts to the required size before mounting on the transformer In rare cases you also have to cut the inner tube of the telescopic protective tube to the desired length The maximum total drive sha...

Page 188: ...s 1 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 2 Screw down the bevel gear for fastening on the transformer on both sides with the contact washers provided to ensure permanent grounding Screws are not included in the scope of supply Figure 215 Bevel gear ...

Page 189: ...en GmbH 2020 189 7545652 00 EN VACUTAP VR Ex 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 216 Shortening square tube ...

Page 190: ...he cut surfaces on the square tube Figure 217 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 218 Screwing down the square tube and the insulator with double coupling part ...

Page 191: ...til the stop is reached Figure 219 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 ISOFLEX TOPAS L32 Slide the square tube with the coupling part onto the shaft end Figure 220 Sliding the square tube with the coupling part onto the shaft end ...

Page 192: ...221 Attaching the square tube to the drive 9 Pivot the square tube away from the axis Figure 222 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 The minimum dimension for overlap ping the two protective tubes is 100 mm ...

Page 193: ...ed in order to slide easily in the outer tube Figure 223 Deburring the inner tube Dimension A distance between the shaft end of the drive and the shaft end of bevel gear Inner tube Outer tube 170 mm 190 mm Shorten to 200 mm 200 mm 191 mm 1130 mm Dimension A 20 mm 200 mm 1131 mm 1598 mm 700 mm 1150 mm 1 599 mm 2 009 mm 1150 mm 1 150 mm ...

Page 194: ... GmbH 2020 194 7545652 00 EN VACUTAP VR Ex 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 224 Producing grounding hole on the telescopic protective tube ...

Page 195: ...e 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 Figure 225 Sliding on the telescopic protective tube ...

Page 196: ...0 EN VACUTAP VR Ex 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 226 Fitting the adapter ring and the coupling bolt ...

Page 197: ...ease 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 227 Mounting the coupling brackets ...

Page 198: ...lied 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 228 Screwing down the grounding cable on the telescopic protective tube ...

Page 199: ... 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 229 Mounting the protective tube ...

Page 200: ...2 Fitting horizontal drive shaft with insulator Aligning upper gear unit on the on load tap changer head In order to correctly install the horizontal drive shaft under certain circum stances you may have to first align the upper gear unit such that the horizon tal drive shaft is flush with the shaft end of the upper gear unit To do so proceed as follows 1 NOTICE Damage to the on load tap changer d...

Page 201: ... segments 3 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 Failure to do so may result in damage to the de energized tap changer and trans former when starting up Figure 232 Aligning gear unit ...

Page 202: ...nd that the pressure ring segments are firmly in contact with the gear unit housing Figure 233 Securing pressure ring segments Fitting the horizontal drive shaft To mount the horizontal drive shaft proceed as follows 1 Calculate dimension A between the shaft end of the upper gear unit and the shaft end of the bevel gear and shorten the square tube to length A 179 mm taking the insulator into accou...

Page 203: ...t down the protective cover to B 2 mm and deburr the cut edges Figure 235 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 Protect the protective cover against corrosion with a coat of paint Figure 236 Producing the grounding hole on the protective cover ...

Page 204: ...racket with the insulator supplied and the square tube Mount the insulator on the side facing the bevel gear Figure 237 Screwing down the square tube and the insulator with double coupling part 5 Slide the loosely screwed together coupling part onto the insulator until the stop is reached Figure 238 Coupling parts ...

Page 205: ...r 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 Figure 239 Sliding the square tube with the coupling part onto the shaft end 7 Secure the square tube onto the bevel gear Figure 240 Securing the square tube on the bevel gear ...

Page 206: ... 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 Set a unilateral axial clearance of 3 mm between the coupling bolt and the upper coupling piece Figure 241 Secure the square tube on the upper gear unit ...

Page 207: ...2020 207 7545652 00 EN VACUTAP VR Ex 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 242 Fitting the protective cover ...

Page 208: ...ap changer sets and combinations For two column and three column on load tap changer models the individ ual on load tap changer columns are driven by a common motor drive unit You must couple the on load tap changer heads above the transformer cover together and ensure synchronous switching of the on load tap changer columns Proceed as follows 1 Check that the operating positions of all on load ta...

Page 209: ... heads Individ ually couple each on load tap changer Start with the on load tap changer which is closest to the motor drive unit 9 NOTICE After installing all drive shafts continue cranking another 2 5 revolutions counter clockwise on the drive shaft of the upper gear unit to correctly complete the tap change operation An incomplete tap change operation may damage the on load tap changer 10 Switch...

Page 210: ...ve and grounded hoses pipes and pump equipment that are approved for flammable liquids WARNING Danger of explosion Overloading the on load tap changer can lead to explosion Spraying hot in sulating fluid and flying parts can lead to death and serious injuries Prop erty damage is highly probable Ensure that the on load tap changer is not overloaded Ensure use of the on load tap changer in accordanc...

Page 211: ...Ex 2 Remove screw cap on air vent valve E1 on the on load tap changer head cover Figure 244 Screw cap 3 Use screwdriver to lift valve tappet on air vent valve E1 and bleed on load tap changer head Figure 245 Valve tappet 4 Seal air vent valve E1 with screw cap tightening torque 10 Nm ...

Page 212: ... Figure 246 Screw cap 2 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 3 Close vent screw 4 Seal vent screw with screw cap 6 1 2 Grounding the on load tap changer If necessary reduce the stated tightening torque according to the grounding line used ...

Page 213: ... the trans former s ground connection Figure 248 Grounding screw on motor drive unit 3 Connect housing of temperature sensor with grounding screw on on load tap changer head 6 1 3 Checking motor drive unit NOTICE Damage to the on load tap changer de energized tap changer Damage to the on load tap changer de energized tap changer due to actu ation of the on load tap changer de energized tap changer...

Page 214: ...ans former Ensure that the oil compartment of the on load tap changer is completely filled with insulating fluid Ensure that all protective devices for the on load tap changer are function ing correctly and are ready for use Ensure that the ground connections on the motor drive protective housing and protective housing fastening are free of paint Only perform high voltage test if motor drive unit ...

Page 215: ...and the on load tap changer are in the adjustment position 2 Remove the drive 3 Do not actuate the drive while the on load tap changer is uncoupled and do not turn the output shaft 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 185 and the drive...

Page 216: ...itoring device 2 With the stop cock slide valve between oil conservator and oil compart ment open open air vent valve E1 on the on load tap changer head 3 Discharge the gas from under the on load tap changer cover Ensure suf ficient fresh air e g in transformer cells and work tents when doing so 4 Once the gas has been discharged and the insulating fluid is flowing out of the air vent valve close ...

Page 217: ...d NOTICE Damage to the on load tap changer Unsuitable insulating fluids cause damage to the on load tap changer Use insulating fluids that meet the requirements in accordance with IEC 60296 If approved by the transformer manufacturer you can use synthetic es ters in accordance with IEC 61099 or natural esters in accordance with IEC 62770 approved by Maschinenfabrik Reinhausen GmbH 1 Establish a co...

Page 218: ... from the oil compartment 4 Record the temperature of the sample immediately after the sample is taken 5 Determine the dielectric strength and water content at a sample tempera ture of 20 C 5 C The dielectric strength and water content must comply with the limit values Section 8 3 Page 233 specified in the technical data 6 3 2 Bleeding on load tap changer head and suction pipe 6 3 2 1 Bleeding on ...

Page 219: ...Ex 2 Remove screw cap on air vent valve E1 on the on load tap changer head cover Figure 252 Screw cap 3 Use screwdriver to lift valve tappet on air vent valve E1 and bleed on load tap changer head Figure 253 Valve tappet 4 Seal air vent valve E1 with screw cap tightening torque 10 Nm ...

Page 220: ...ent screw and bleed suction pipe completely 3 Close vent screw 4 Seal vent screw with screw cap 6 3 3 Checking motor drive unit NOTICE Damage to the on load tap changer de energized tap changer Damage to the on load tap changer de energized tap changer due to actu ation of the on load tap changer de energized tap changer without insulat ing fluid Ensure that the selector de energized tap changer i...

Page 221: ...pled and that the motor drive unit functions correctly Tests on the motor drive unit 1 Perform function checks as described in relevant MR operating instruc tions for motor drive unit 2 NOTICE An incorrectly coupled motor drive unit will lead to damage to the on load tap changer Undertake trial tap change operations across the entire range of settings Ensure that in each operating position the tap...

Page 222: ...f the circuit breaker ü The protective relay and additional protective devices are looped into the circuit breaker s tripping circuit ü The motor drive unit and all protective devices are functioning correctly and are ready for use ü The oil compartment of the on load tap changer is completely filled with insulation fluid ü All stop cocks between on load tap changer and oil conservator of the on l...

Page 223: ... when protective relay or other protective devices have been tripped Do not use the equipment again until you are sure there is no damage to the on load tap changer or transformer NOTICE Damage to motor drive unit Damage to the motor drive unit due to condensate in protective housing of motor drive unit Always keep protective housing of the motor drive unit tightly closed In the event of operation...

Page 224: ...nger not changing tap position sluggish ness Raise keys Lower keys not working no audible di verter switch action Contact MR No change in voltage on transformer despite change in po sition on motor drive unit Contact MR Tap position indicator on motor drive unit and on load tap changer different Contact MR Noises on drive shaft or motor drive unit when changing tap position Ensure proper mounting ...

Page 225: ...sted Be sure to contact Maschinenfabrik Reinhausen to check on load tap changer and transformer if the protective relay has tripped Only use the equipment again when you are sure there is no damage to the on load tap changer or transformer When the circuit breakers have been tripped by the protective relay proceed as follows 1 Establish time of tripping 2 Determine operating position of on load ta...

Page 226: ... the instant of tripping ð Was the on load tap changer moved immediately before or during trip ping ð Did any other protective devices of the transformer respond at the in stant of tripping ð Were switching operations in the network being carried out at the in stant of tripping ð Were overvoltages registered at the instant of tripping 3 Take further action in agreement with Maschinenfabrik Reinhau...

Page 227: ...302 VRS III 1300 Y VRS I 26221 Maximum rated through current Irm A 700 1 000 1 300 2 600 Rated short time current kA 10 12 16 26 Rated duration of short circuits s 3 3 3 3 Rated peak withstand current kA 25 30 40 65 Maximum rated step voltage Uirm V 4 500 4 500 4 500 4 500 Step capacity Pstm kVA 1 5002 2 1002 1 5002 2 1002 1 5002 2 1002 3 0002 4 2002 Rated frequency Hz 50 60 Table 15 Electrical da...

Page 228: ...26 Rated duration of short circuits s 3 3 Rated peak withstand current kA 40 65 Maximum rated step voltage Uirm V 4 500 4 500 Step capacity Pstm kVA 5 850 11 700 Rated frequency Hz 50 60 Table 17 Electrical data for VACUTAP VRL I II III 1 Forced current splitting by two parallel winding branches required Not for electrical arc furnace operation Electrical data for VACUTAP VRH VRX I II III The VACU...

Page 229: ... 1 Page 234 Weight Displacement and oil volume Table 19 Mechanical data for VACUTAP VR 8 1 2 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 when the transformer is in emergency operation based on IEC 60076 7 up to 110 C in accordance IEC 60214 1 Synthetic ester liqui...

Page 230: ...d mag netic switches These can be designed as normally open NO or normally closed NC contacts see dimensional drawing supplied 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 22 Electrical data Switching capacity switching load on an off Minimum switched current AC DC low est volt...

Page 231: ...ched current AC DC high est voltage 4 8 mA at 250 V Maximum switched current DC highest current 2 A at 125 V with L R 40 ms Maximum switched current DC highest voltage 1 A at 250 V with L R 40 ms Maximum switched current AC highest current 2 A at 125 V with cos φ 0 6 Maximum switched current AC highest voltage 1 6 A at 250 V with cos φ 0 6 Switching operations 1 000 cycles Table 26 Switching capac...

Page 232: ...e can be designed as normally open NO or normally closed NC contacts and are electrically isolated see dimensional drawing supplied Electrical data for normally open NO and normally closed NC dry reed magnetic switch 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 Cont...

Page 233: ...etermined based on IEC 60422 IEC 61203 and IEEE C57 147 Limit values for insulating fluids in ac cordance with IEC 60296 Ud H2O When commissioning the transformer for the first time 60 kV 2 5 mm 12 ppm During operation 30 kV 2 5 mm 30 ppm After maintenance 50 kV 2 5 mm 15 ppm Table 30 Insulating fluids in accordance with IEC 60296 Limit values for synthetic esters in ac cordance with IEC 61099 Ud ...

Page 234: ...9 Drawings Maschinenfabrik Reinhausen GmbH 2020 234 7545652 00 EN VACUTAP VR Ex 9 Drawings 9 1 Dimensional drawings ...

Page 235: ...T HEIGHT mm SELECTOR SIZE 10 10 1 0 1 2 0 1 2 0 10 10 10 10 10 120 120 47 Y 29 O 34 5 34 47 VRS VR M L H X DIVERTER SWITCH INSERT TRANSITION RESISTANCES EYEBOLT 51 52 53 DIVERTER SWITCH OIL COMPARTMENT OIL COMPARTMENT BASE SHIELDING RINGS FOR UM OF 170 kV OR GREATER OIL COMPARTMENT CONNECTION TERMINAL CONNECTION CONTACT FOR ON LOAD TAP CHANGER TAKE OFF LEAD TAKE OFF RING FOR ON LOAD TAP CHANGER TA...

Page 236: ... 4322131 001 01 1 2 1077666 SCALE 20 10 2016 PRODASTSCHUK NAME THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN DIMENSION IN mm EXCEPT AS NOTED STAN...

Page 237: ...9 Drawings Maschinenfabrik Reinhausen GmbH 2020 237 7545652 00 EN VACUTAP VR Ex 9 2 On load tap changer head ...

Page 238: ......

Page 239: ... OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN A1 SUPPORTING FLANGE LIFTING DEVICE TRANSFORMER COVER LIFTING DEVICE Z CENTERING BOLT DRIVE SIDE OF SELECTOR M M Z Z O 750 c a b 46 max 35 66 16...

Page 240: ...AND VACUTAP VR VM VMS 1 MASCHINENFABRIK REINHAUSEN GMBH 2018 THE REPRODUCTION DISTRIBUTION AND UTILIZATION OF THIS DOCUMENT AS WELL AS THE COMMUNICATION OF ITS CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN A1 DRIVE SIDE OF SELECTOR GASKET 4 25 ...

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Page 246: ...9 Drawings Maschinenfabrik Reinhausen GmbH 2020 246 7545652 00 EN VACUTAP VR Ex 9 3 Adjustment plans ...

Page 247: ...SS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN A A A A A 10050 10060 12110 12120 14130 14140 16150 16160 18170 18180 3 2 7 9 9 11 8 8 10 10070 10080 10090 10100 5 4 6 M M M M A M DRIVE SIDE OF THE SELECTOR ON LOAD TAP CHANGER TAKE OFF TERMINAL THE CONNECTION DIAGRAM OF THE ON ...

Page 248: ...ED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN K 1 K 2 10191W 12231W 14271W 16311W 18351W 10073W 18353W 10071W 10081W 10091W 12101W 14111W 14121W 16131W 16141W 18151W 18161W A A A A A A M M M M M M 10 PITCH REPRESENTATION A M DRIVE SIDE OF THE SELECTOR ON LOAD TAP CHANGER TAKE OFF TERMINAL THE CONNECTION...

Page 249: ... CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN K 1 0 A A A A A A M M M M M M 10 PITCH REPRESENTATION A M DRIVE SIDE OF THE SELECTOR ON LOAD TAP CHANGER TAKE OFF TERMINAL THE CONNECTION DIAGRAM OF THE ON LOAD TAP CHANGER IS BINDING FOR THE DESIG...

Page 250: ...AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN A A A A A A M M M 10050 10060 12110 12120 14130 14140 16150 16160 18170 18180 3 2 7 9 9 11 8 8 10 10070 10080 10090 10100 5 4 6 M A M DRIVE SIDE OF THE SELECTOR ON LOAD TAP CHANGER TAKE OFF TERMINAL THE CONNECTION DIAGRAM OF THE ON L...

Page 251: ...CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN A A A A A A M M M M M K 1 0 M 10 PITCH REPRESENTATION A M DRIVE SIDE OF THE SELECTOR ON LOAD TAP CHANGER TAKE OFF TERMINAL THE CONNECTION DIAGRAM OF THE ON LOAD TAP CHANGER IS BINDING FOR THE DESIGN...

Page 252: ...CONTENTS TO OTHERS WITHOUT EXPRESS AUTHORIZATION IS PROHIBITED OFFENDERS WILL BE HELD LIABLE FOR THE PAYMENT OF DAMAGES ALL RIGHTS RESERVED IN THE EVENT OF THE GRANT OF A PATENT UTILITY MODEL OR DESIGN A A A A A A M M M M M M K 1 0 10 PITCH REPRESENTATION A M DRIVE SIDE OF THE SELECTOR ON LOAD TAP CHANGER TAKE OFF TERMINAL THE CONNECTION DIAGRAM OF THE ON LOAD TAP CHANGER IS BINDING FOR THE DESIGN...

Page 253: ...kV 2 5 mm maximum electrical field strength without a breakdown arc IEC The International Electrotechnical Commission IEC for short is involved in the preparation and publication of international standards for electri cal electronic and related technologies IP Ingress protection MR Maschinenfabrik Reinhausen GmbH NC Normally Closed contact NO Normally Open contact ...

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Page 256: ...fabrik Reinhausen GmbH Falkensteinstrasse 8 93059 Regensburg 49 0 941 4090 0 sales reinhausen com www reinhausen com 7545652 00 EN VACUTAP VR Ex 08 20 Maschinenfabrik Reinhausen GmbH 2020 THE POWER BEHIND POWER ...

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