MR VACUTAP VV Installation And Commissioning Instructions Download Page 174

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7 Fault elimination

Maschinenfabrik Reinhausen GmbH 2020

174

4349322/01 EN

VACUTAP

2. Contact and inform Maschinenfabrik Reinhausen of the following:

What was the load of the transformer at the instant of tripping?

Was there a tap-change operation on the on-load tap-changer immedi-
ately before or during the tripping?

Did any other protective devices of the transformer respond at the in-
stant of tripping?

Were switching operations in the network being carried out at the in-
stant of tripping?

Were overvoltages registered at the instant of tripping?

How high is the static pressure on the pressure relief device (height dif-
ference between the oil level in the on-load tap-changer oil conservator
and the pressure relief device)?

3. Take further action in agreement with Maschinenfabrik Reinhausen.

7.2.3 Re-commissioning the transformer

You can re-commission the transformer once the cause for tripping the pres-
sure monitoring device has been determined and resolved:

1. Ensure that the sensor on the snap-action switch is in the OPERATION

position.

2. Commission the transformer.

Summary of Contents for VACUTAP VV

Page 1: ...On load tap changer VACUTAP VV Installation and commissioning instructions 4349322 01 EN ...

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: ...ns 12 2 4 Personal protective equipment 14 2 5 Personnel qualification 15 3 Product description 16 3 1 Scope of delivery 16 3 2 On load tap changer 16 3 2 1 Function description 16 3 2 2 Setup models 17 3 2 3 Nameplate and serial number 20 3 2 4 Protective devices 20 3 3 Drive shaft 26 3 3 1 Function description 26 3 3 2 Design versions 27 4 Packaging transport and storage 32 4 1 Packaging 32 4 1 ...

Page 4: ...59 5 3 2 Connecting the tap winding and on load tap changer take off lead 60 5 3 3 Performing transformer ratio test before drying 61 5 3 4 Performing DC resistance measurement on transformer 62 5 3 5 Drying on load tap changer in autoclave 62 5 3 6 Lifting top part of on load tap changer head off supporting flange bottom part 69 5 3 7 Attaching the bell type tank and connecting the on load tap ch...

Page 5: ...or drive unit 165 6 3 4 Checking protective relay 166 6 3 5 Checking pressure monitoring device 167 6 3 6 Commissioning the transformer 168 7 Fault elimination 169 7 1 Tripping the protective relay and re commissioning the transformer 171 7 1 1 Flap valve in OPERATION position 172 7 1 2 Flap valve in OFF position 172 7 1 3 Re commissioning the transformer 172 7 2 Tripping the pressure monitoring d...

Page 6: ...ues for dielectric strength and water content of insulating fluids 181 9 Drawings 182 9 1 737774 183 9 2 898863 184 9 3 737060 185 9 4 738902 186 9 5 739172 187 9 6 890183 188 9 7 898866 189 9 8 899110 190 9 9 899409 191 9 10 899083 192 9 11 899051 193 9 12 733469 194 9 13 892916 195 Glossary 196 ...

Page 7: ...fabrik 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: ...gs 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 o...

Page 9: ...rstanding 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 act...

Page 10: ...duction Maschinenfabrik Reinhausen GmbH 2020 10 4349322 01 EN VACUTAP VV 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: ...rom delivery installation and operation to removal and disposal The following is considered appropriate use Use the product only with the transformer motor drive unit specified in the order The serial numbers of on load tap changer and on load tap changer ac cessories drive drive shaft bevel gear protective relay etc must match if the on load tap changer and on load tap changer accessories are sup...

Page 12: ...s 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 permitted operating conditions by taking suitable measures 2 3 Fundamental safety instructions To prevent accidents disruptions and damage as well...

Page 13: ...oduct in ar eas where a risk of explosion is present 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 reliab...

Page 14: ...mbH Contact Maschinenfabrik Reinhausen GmbH 2 4 Personal protective equipment Personal protective equipment must be worn during work to minimize risks to health Always wear the personal protective equipment required for the job at hand Never wear damaged personal protective equipment Observe information about personal protective equipment provided in the work area Protective clothing Close fitting...

Page 15: ...and guidance from an electrically skilled person in relation to the tasks undertaken and 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 techn...

Page 16: ...formation 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 32 chapter 3 2 On load tap changer 3 2 1 Function description ...

Page 17: ...t of which the transformer s transmission ratio is adapted to the prevailing op erating requirements Figure 1 System overview of on load tap changer transformer 1 Transformer tank 6 Gear unit 2 Motor drive unit 7 On load tap changer 3 Vertical drive shaft 8 Protective relay 4 Bevel gear 9 Oil conservator 5 Horizontal drive shaft 10 Active part 3 2 2 Setup models The following drawing shows the mai...

Page 18: ... changer in the Drawings Section 9 Page 182 section Figure 2 On load tap changer 1 Upper gear unit 2 On load tap changer head 3 Supporting flange 4 Connection contact 5 Oil compartment 6 Change over selector 7 Pipe bend 8 Rupture disk 3 2 2 1 Pipe connections The on load tap changer head features 4 pipe connections for different pur poses ...

Page 19: ...ight 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 tap changer oil conservator and can be interchanged with pipe connection Q Pipe connection E2 Pipe connection E2 is sealed off with a blank c...

Page 20: ...tap changer head to the oil conservator is exceeded due to a fault The flowing insulating fluid actuates the flap valve which tips over into position OFF The contact 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 c...

Page 21: ... VACUTAP VV 3 2 4 1 2 Design versions Front view Figure 5 Protective relay RS 2001 1 Inspection window 2 Pressure equalization element Rear view Figure 6 Protective relay RS 2001 1 Dummy plug 2 Nameplate The protective relay RS 2001 R has an extra inspection window on the rear ...

Page 22: ...ed 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 Cable gland 9 Protective cover 10 Dummy plug 11 Connection terminal 12 Pressure equalization element 13 Cylinder head screw for protective conductor connection The protective relays RS 2003 and RS 2004 have a 1 2 14NPT adapter in place of the cable gland ...

Page 23: ...y linked to the sensor on the snap action switch The pressure increase activates the sensor on the snap action switch which flips into the OFF position This triggers the circuit breaker and de energizes the transformer The sensor on the snap action switch has to be reset to the initial position by hand after tripping Low energy interference does not cause the pressure monitoring device to trip sin...

Page 24: ... gas accumulation under the pressure operated relay Gas accumulation under the pressure operated relay is normal 3 2 4 2 2 Design versions There are two variants of the pressure monitoring device DW 2000 for vertical installation DW 2000 for horizontal installation The housing and the cover cap of the pressure monitoring device consist of lightweight corrosion resistant metal Figure 9 Snap action ...

Page 25: ...verpressure in the oil compartment of the on load tap changer 3 2 4 4 Pressure relief device MPreC On request MR will supply a pre fitted MPreC pressure relief device in place of the rupture disk This device responds to a defined overpressure in the oil compartment of the on load tap changer The on load tap changer therefore meets the requirements of IEC 60214 1 regarding pressure relief devices 3...

Page 26: ...e 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 de energized tap changer The bevel gear changes the direction from vertical to horizontal Accordingly the vertical drive shaft has to be mounted between drive and bevel gear and the horizontal drive shaft between bevel gear and on load tap chan...

Page 27: ...s of a square tube and is coupled at each end by two coupling brackets and one coupling bolt to the driving or driven shaft end of the device to be connected Figure 11 Components of the drive shaft 1 Bevel gear 2 Hose clip 3 Telescopic protective tube 4 Coupling bracket 5 Square tube 6 Coupling bolt 7 Adapter ring 8 Protective cover ...

Page 28: ...shaft without cardan joint and without insulator standard version Configuration V 1 min Intermediate bearing Middle of hand crank middle of bevel gear maximum permissible axial offset 2 536 mm When the maximum value of 2472 mm is exceeded it is necessary to use an in termediate bearing V 1 2472 mm without in termediate bearing V 1 2472 mm with inter mediate bearing ...

Page 29: ...e shaft without cardan joint and with insulator special model Configuration V 1 min Intermediate bearing Middle of hand crank middle of bevel gear maximum permissible axial offset 2 706 mm When the maximum value of 2472 mm is exceeded it is necessary to use an in termediate bearing V 1 2472 mm without in termediate bearing V 1 2472 mm with inter mediate bearing ...

Page 30: ...P VV 3 3 2 3 Drive shaft with cardan joint and without insulator Figure 14 Drive shaft with cardan joint and without insulator special model Configuration V 1 min mm Intermediate bearing for mm Middle of hand crank middle of bevel gear maximum permissible axial offset 20 798 V 1 2564 ...

Page 31: ...UTAP VV 3 3 2 4 Drive shaft with cardan joint and with insulator Figure 15 Drive shaft with cardan joint and with insulator special model Configuration V 1 min mm Intermediate bearing for mm Middle of hand crank middle of bevel gear maximum permissible axial offset 20 978 V 1 2772 ...

Page 32: ...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 33: ...let 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 damag...

Page 34: ...aging 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 for...

Page 35: ...kaging 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 ship...

Page 36: ...otential connec tion unit during tap change operations Do not switch the on load tap changer when working on the selector change over selector or potential connection unit 5 1 Preparatory work Perform the work stated below before installing the on load tap changer in the transformer 5 1 1 Fitting mounting flange on transformer cover A mounting flange is required for fitting the on load tap changer...

Page 37: ...al installation of the on load tap changer 1 Place tracing template on mounting flange and use the four markings to align 2 Fit stud bolts on mounting flange Figure 17 Tracing template stud bolts 5 2 Installing the on load tap changer in the transformer standard version 5 2 1 Fastening on load tap changer to transformer cover Note that only on load tap changers with an unscrewed supporting flange ...

Page 38: ...r 1 CAUTION An unstably positioned on load tap changer may tip re sulting in serious injuries and damage Place on load tap changer on a level surface and secure it against tipping 2 Remove red colored packaging material and transport material from on load tap changer 3 Ensure that the on load tap changer is in the adjustment position The ad justment position is indicated in the on load tap changer...

Page 39: ...H 2020 39 4349322 01 EN VACUTAP VV 6 Remove on load tap changer head cover Figure 19 On load tap changer head cover 7 For design with oil suction pipe loosen screw connection of R3 4 oil suc tion pipe Check for leaks Figure 20 Oil suction pipe ...

Page 40: ...22 01 EN VACUTAP VV 8 Remove bolts and locking washers between top part of on load tap changer head and supporting flange Figure 21 On load tap changer head 9 Lift top part of on load tap changer head off supporting flange Figure 22 On load tap changer head ...

Page 41: ...oad tap changer head on the transformer cover 1 Clean sealing surfaces on mounting flange and on load tap changer head place oil resistant gasket on mounting flange Figure 23 Mounting flange and on load tap changer head 2 Position top part of on load tap changer head on mounting flange Figure 24 On load tap changer head ...

Page 42: ...icts the swivel range of the upper gear unit 5 2 1 3 Connecting on load tap changer to top part of on load tap changer head 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 in the on load tap changer head cover ...

Page 43: ...ovided and slowly lift on load tap changer from below towards on load tap changer head Under no circumstances should the on load tap changer be lifted up with the fixing bolts Ensure that all supporting flange stud bolts go easily through the mounting holes of the on load tap changer head Figure 25 On load tap changer 2 Screw the top part to the bottom part of the on load tap changer head Figure 2...

Page 44: ...or design with oil suction pipe connect oil suction pipe screw connec tion Check for leaks Figure 27 Oil suction pipe 4 Screw the on load tap changer head to the mounting flange The tighten ing torque depends on the screw connection elements used Figure 28 On load tap changer head ...

Page 45: ...on contacts Connect connecting leads without warping or deforming If necessary use an expansion loop for connecting leads 1 Connect tap winding and on load tap changer take off lead in accordance with the connection diagram included with the delivery 2 If connection leads have to cross the open surface of the oil compartment change over selector there must be a clearance of 50 mm between the conne...

Page 46: ... 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 47: ...e 5 Maximum permitted measured currents when performing DC resistance measurement on transformer 5 2 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 changer...

Page 48: ...sed 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 49: ...e on load tap changer head cover or the following acces sories motor drive unit drive shaft protective relay pressure monitoring device pressure relief device bevel gear temperature sensor oil filter unit 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 c...

Page 50: ...sted 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 Place on load tap changer head cover on on load tap changer head and secure Figure 32 On load tap changer head cover 5 2 5 2 Vapor phase drying in the autoclave If you wish to ...

Page 51: ...sed 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 52: ...ter clockwise Figure 35 Kerosene drain plug 5 2 5 2 4 Drying the on load tap changer NOTICE Damage to the on load tap changer head cover and on load tap changer accessories Both the on load tap changer head cover and the on load tap changer ac cessories will become damaged if they are dried Never dry the on load tap changer head cover or the following acces sories motor drive unit drive shaft prot...

Page 53: ...E An open kerosene drain plug leads to insulating fluid escaping from the oil compartment and therefore to damage to the on load tap changer Close kerosene drain plug tightening torque 39 Nm 5 2 5 2 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 da...

Page 54: ...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 2 6 1 Vacuum drying in the transformer tank The on load...

Page 55: ...ger 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 2 6 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 right aw...

Page 56: ...ne shared lead Figure 39 Kerosene vapor lead 5 Seal off unused pipe connections and pipe bends with a suitable blank cover Vapor phase drying in the transformer tank 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 c...

Page 57: ...er 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 After drying completely fill the oil compartment diverter switch insert fitted with insulating fluid again as soon as possibl...

Page 58: ...e 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 operating position reached through the inspection win dow in the on load tap changer head cover Never ov...

Page 59: ...ment position see the accom panying connection diagram for the on load tap changer 5 3 Installing on load tap changer in transformer bell type tank version 5 3 1 Inserting on load tap changer into supporting structure 1 Remove red colored packaging material and transport material from on load tap changer 2 NOTICE Tensile forces can lead to damage and malfunctions on the on load tap changer Using s...

Page 60: ...ot twist connection contacts Connect connecting leads without warping or deforming If necessary use an expansion loop for connecting leads 1 Connect tap winding and on load tap changer take off lead in accordance with the connection diagram included with the delivery 2 If connection leads have to cross the open surface of the oil compartment change over selector there must be a clearance of 50 mm ...

Page 61: ... 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 62: ... 6 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 changer ...

Page 63: ...sed 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 64: ...e on load tap changer head cover or the following acces sories motor drive unit drive shaft protective relay pressure monitoring device pressure relief device bevel gear temperature sensor oil filter unit 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 c...

Page 65: ...ted 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 Place on load tap changer head cover on on load tap changer head and secure Figure 46 On load tap changer head cover 5 3 5 2 Vapor phase drying in the autoclave If you wish to p...

Page 66: ...sed 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 67: ...ter clockwise Figure 49 Kerosene drain plug 5 3 5 2 4 Drying the on load tap changer NOTICE Damage to the on load tap changer head cover and on load tap changer accessories Both the on load tap changer head cover and the on load tap changer ac cessories will become damaged if they are dried Never dry the on load tap changer head cover or the following acces sories motor drive unit drive shaft prot...

Page 68: ...E An open kerosene drain plug leads to insulating fluid escaping from the oil compartment and therefore to damage to the on load tap changer Close kerosene drain plug tightening torque 39 Nm 5 3 5 2 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 da...

Page 69: ...es 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 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 i...

Page 70: ... is indicated in the on load tap changer connection dia gram included in delivery 2 Ensure that the inspection window is sealed off with the cover 3 Remove temporary fastening and spacers and slowly lower the on load tap changer Figure 51 Temporary fastening 4 Remove screws and locking washers on on load tap changer head cover Figure 52 On load tap changer head cover ...

Page 71: ...H 2020 71 4349322 01 EN VACUTAP VV 5 Remove on load tap changer head cover Figure 53 On load tap changer head cover 6 For design with oil suction pipe loosen screw connection of R3 4 oil suc tion pipe Check for leaks Figure 54 Oil suction pipe ...

Page 72: ...EN VACUTAP VV 7 Remove bolts and locking washers between top part of on load tap changer head and supporting flange Figure 55 On load tap changer head 8 Lift top part of on load tap changer head off supporting flange Figure 56 Top part of on load tap changer head ...

Page 73: ...ecting the on load tap changer to the top part of the on load tap changer head 5 3 7 1 Attaching bell type tank 1 Clean sealing surface of supporting flange place o ring on supporting flange Figure 57 Supporting flange with o ring 2 Lift the bell type tank over the active part of the transformer Figure 58 Bell type tank ...

Page 74: ...oad tap changer head on bell type tank 1 Clean sealing surfaces on mounting flange and on load tap changer head place oil resistant gasket on mounting flange Figure 59 Mounting flange and on load tap changer head 2 Position top part of on load tap changer head on mounting flange Figure 60 On load tap changer head ...

Page 75: ...icts the swivel range of the upper gear unit 5 3 7 3 Connecting on load tap changer to top part of on load tap changer head 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 in the on load tap changer head cover ...

Page 76: ...ovided and slowly lift on load tap changer from below towards on load tap changer head Under no circumstances should the on load tap changer be lifted up with the fixing bolts Ensure that all supporting flange stud bolts go easily through the mounting holes of the on load tap changer head Figure 61 On load tap changer 2 Screw the top part to the bottom part of the on load tap changer head Figure 6...

Page 77: ...or design with oil suction pipe connect oil suction pipe screw connec tion Check for leaks Figure 63 Oil suction pipe 4 Screw the on load tap changer head to the mounting flange The tighten ing torque depends on the screw connection elements used Figure 64 On load tap changer head ...

Page 78: ... 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 3 8 1 Vacuum drying in the transformer tank The on loa...

Page 79: ...ger 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 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 right aw...

Page 80: ...ne shared lead Figure 68 Kerosene vapor lead 5 Seal off unused pipe connections and pipe bends with a suitable blank cover Vapor phase drying in the transformer tank 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 c...

Page 81: ...er 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 After drying completely fill the oil compartment diverter switch insert fitted with insulating fluid again as soon as possibl...

Page 82: ...he 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 operating position reached through the inspection win dow in the on load tap changer head cover Never o...

Page 83: ... position see the accom panying connection diagram for the on load tap changer 5 4 Fitting protective devices and drive components 5 4 1 Electrically 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 th...

Page 84: ...ry control and remove the terminal box cover Figure 72 Tap change supervisory control cover 3 Connect monitoring contacts to corresponding motor drive unit terminals using connecting lead in accordance with connection diagram of relevant motor drive unit Figure 73 Tap change supervisory control 4 Mount the terminal box cover Ensure that the sealing points are clean ...

Page 85: ...r switching off the transformer before beginning fur ther work on the protective relay so that the gases can dissipate Ensure that there are no ignition sources such as naked 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 before beginning work Do not operate any electrical devices duri...

Page 86: ...ositions for checking electrical continuity are shown in the dimensional drawing provided 1 Loosen the three screws on the terminal box cover and lift off the terminal box cover Figure 75 Terminal box cover 2 Remove the slotted head screw for potential tie in and remove the termi nal box cover with wire Figure 76 Terminal box cover NOTICE Damage to protective relay Damage to protective relay resul...

Page 87: ...20 87 4349322 01 EN VACUTAP VV 3 Press OFF test button ð Flap valve is inclined Line marker appears in the middle of the inspec tion window Figure 77 OFF position 4 Press OPERATION test button ð Flap valve is vertical Figure 78 OPERATION position ...

Page 88: ... 5 4 3 2 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 mus...

Page 89: ...ve relay 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 horizontal is permitted in the direction to the conservator An incli nation of up to 5 from vertical to ei...

Page 90: ...usen GmbH 2020 90 4349322 01 EN VACUTAP VV 9 The reference arrow on the terminal box cover must point toward the on load tap changer s oil conservator Figure 82 Reference arrow pointing towards the on load tap changer s oil conservator ...

Page 91: ...sion as either NC or NO contacts Other contact combinations can be supplied as special versions and are shown in the dimensional draw ing provided 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 th...

Page 92: ... 01 EN VACUTAP VV 1 Insert cable gland RS 2001 2001 V 2001 H 2001 E 2001 5 2001 R or adapter RS 2003 and RS 2004 in the tapped hole with the most favor able position Figure 84 Tapped hole 2 Seal open tapped hole with dummy plug Figure 85 Sealed with dummy plug ...

Page 93: ...erminal box cover and lift off the terminal box cover Figure 86 Terminal box cover 4 Take off the slotted head screw for potential tie in and remove the termi nal box cover with wire Figure 87 Terminal box cover 5 Remove screw for the protective cover and take off the protective cover Figure 88 Protective cover ...

Page 94: ...able through cable gland and into protective relay Ensure that the cable gland is well connected and sealed Figure 89 Cable bushing 7 Connect the electric cables to the connection terminals in accordance with the connection diagram on the dimensional drawing Figure 90 Electrical cables ...

Page 95: ...abrik Reinhausen GmbH 2020 95 4349322 01 EN VACUTAP VV 8 Connect protective conductor to cylinder head screw Figure 91 Protective conductor 9 Insert the protective cover and secure using the screw Figure 92 Protective cover ...

Page 96: ...erminal box cover 11 Attach the terminal box cover and secure with screws Figure 94 Terminal box cover 5 4 4 Installing and connecting the pressure monitoring device 5 4 4 1 Checking the function of the pressure monitoring device Check the function of the pressure monitoring device before you install it on the pipe bend or the on load tap changer head 1 Remove the cover cap ...

Page 97: ...abrik Reinhausen GmbH 2020 97 4349322 01 EN VACUTAP VV 2 Activate the snap action switch ð Sensor is in the OFF position above the snap action switch Figure 95 OFF position 1 Snap action switch 2 Sensor in the OFF position ...

Page 98: ...or 5 4 4 2 Installing the pressure monitoring device The pressure monitoring device can be installed in 2 variants Fastening on the on load tap changer head vertical installation Fastening onto the pipe bend horizontal installation It is installed via the holes on the mounting ring A mounting seal has to be installed under the pressure monitoring device during installation During fastening ensure ...

Page 99: ...n alarm message are not permitted 1 Remove the cover cap 2 Insert Use the tapped hole for routing leads for this 3 Connect the leads to the terminals of the snap action switch The snap action switch is designed as a normally open and normally closed switch it flips after being triggered and can be reset 4 Connect all of the electrical leads and the protective conductor Either 1 or 2 leads can be c...

Page 100: ...e cases you also have to cut the inner tube of the telescopic protective tube to the desired length The maximum permitted total drive shaft length of the drive last col umn 15 m Standard lengths Motor drive unit Manual drive 400 600 900 1300 1700 2000 2500 Not permitted 1 Table 7 Graded standard lengths of square tubes 1 I 2000 only possible for vertical installation without shaft protection Tele ...

Page 101: ...mitted as long as they do not exceed 35 mm per 1000 mm of square tube length this corre sponds to 2 Figure 97 Permitted maximum axial displacement of vertical drive shaft without cardan joint To fit the vertical drive shaft to the drive proceed as follows 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 ad...

Page 102: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 102 4349322 01 EN VACUTAP VV 2 Fasten the bevel gear to the transformer Figure 98 Bevel gear ...

Page 103: ...schinenfabrik Reinhausen GmbH 2020 103 4349322 01 EN VACUTAP VV 3 Determine dimension A between shaft end of drive and shaft end of bevel gear Shorten square tube to length of A 9 mm Figure 99 Shortening square tube ...

Page 104: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 104 4349322 01 EN VACUTAP VV 4 Deburr cut surfaces of square tube Figure 100 Deburring cut surfaces ...

Page 105: ...ting Maschinenfabrik Reinhausen GmbH 2020 105 4349322 01 EN VACUTAP VV 5 Slide the loosely screwed together coupling part onto square tube until stop is reached Figure 101 Slide coupling part onto square tube ...

Page 106: ...ing bolt into shaft end of drive Grease coupling part coupling bolt and shaft end e g ISOFLEX TOPAS L32 Slide square tube with coupling part onto shaft end Figure 102 Sliding square tube with coupling part onto shaft end 7 Attach square tube to drive Figure 103 Attaching square tube to drive ...

Page 107: ...CUTAP VV 8 Pivot square tube away from axis Figure 104 Pivoting square tube away from axis 9 When installing inner tube of telescopic protective tube shorten on the side without slots if necessary The minimum dimension for overlapping the two protective tubes is 100 mm ...

Page 108: ...rred in order to slide easily in the outer tube Figure 105 Deburring inner tube Dimension A distance between shaft end of drive and shaft end of bevel gear Inner tube Outer tube 170 mm 190 mm Shorten to 200 mm 200 mm 191 mm 1 130 mm Dimension A 20 mm 200 mm 1 131 mm 1 598 mm 700 mm 1 150 mm 1 599 mm 2 009 mm 1 150 mm 1 150 mm ...

Page 109: ... 10 Slide outer tube over inner tube When doing so make sure that the non slotted side of the inner tube is facing upwards Slide telescopic protec tive tube onto square tube Then slide hose clips over telescopic protec tive tube Figure 106 Sliding on telescopic protective tube ...

Page 110: ...bH 2020 110 4349322 01 EN VACUTAP VV 11 Place adapter ring over bearing collar of bevel gear and slide upwards Insert coupling bolt into shaft end of bevel gear Pivot square tube back to axis Figure 107 Fitting adapter ring and coupling bolt ...

Page 111: ... gear Set a unilateral axial clearance of 3 mm between the coupling bolt and upper coupling piece Figure 108 Mounting coupling brackets 13 Attach bottom protective tube inner tube with a hose clip to bearing col lar of drive Then slide upper protective tube outer tube over adapter ring on bevel gear Secure upper protective tube to bottom protective tube with hose clip both at top end and at the co...

Page 112: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 112 4349322 01 EN VACUTAP VV Figure 109 Mounting protective tube ...

Page 113: ... displacement of horizontal drive shaft without cardan joint 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 ...

Page 114: ...egments 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 112 Aligning gear unit ...

Page 115: ...ring segments are firmly in contact with the gear unit housing Figure 113 Securing pressure ring segments Fitting horizontal drive shaft You can turn the temperature sensor if this is necessary for fitting the drive shaft To fit 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 squa...

Page 116: ...AP VV 2 Calculate inside width B between housings of upper gear unit and bevel gear Cut down the protective cover to B 2 mm and deburr the cut edges Protect protective cover against corrosion with a coat of paint Figure 115 Shortening deburring and coating protective cover ...

Page 117: ...nting Maschinenfabrik Reinhausen GmbH 2020 117 4349322 01 EN VACUTAP VV 3 Slide loosely screwed together coupling part onto square tube until stop is reached Figure 116 Sliding coupling part onto square tube ...

Page 118: ...ft end of the bevel gear e g ISOFLEX TOPAS L32 and insert coupling bolt into shaft end Thread hose clip onto square tube and slide square tube with coupling part onto shaft end Figure 117 Sliding square tube with coupling part onto shaft end 5 Secure square tube on bevel gear Figure 118 Securing square tube on bevel gear ...

Page 119: ... EN VACUTAP VV 6 Grease coupling bolt coupling brackets and shaft end of the upper gear unit e g ISOFLEX TOPAS L32 and insert coupling bolt into shaft end Secure square tube with coupling brackets on upper gear unit Figure 119 Secure square tube on upper gear unit ...

Page 120: ...hausen GmbH 2020 120 4349322 01 EN VACUTAP VV 7 Attach shortened protective cover to housing lugs on the on load tap changer head and bevel gear Secure each end of protective cover with a hose clip Figure 120 Fitting protective cover ...

Page 121: ...P VV 8 If using a bearing block or angle gear attach caps to the protective cover Drill two holes each with Ø 3 5 mm on the sides of the protective cover us ing a hand drill with drill bit prior to attaching the caps Figure 121 Bearing block caps Figure 122 Angle gear caps ...

Page 122: ... 5 Note arrow on drive shaft flange under the stamped serial number The di rection of the arrow indicates the direction of rotation when turning the hand crank of the motor drive unit clockwise and must be identical for all gear units 6 Move each on load tap changer separately one step by rotating the shaft ends counter clockwise until the on load tap changer operates 7 Check that the operating po...

Page 123: ...design is also possible However if using a horizon tal design please note that the protective cover supplied must be adapted accordingly and a cardan joint with an inner hub diameter of 25 mm must be used if you want to use the cardan joint on the upper gear unit Permitted axial displacements An axial displacement of 20 is permitted for the vertical and horizontal drive shaft with cardan joints Fi...

Page 124: ...aft with cardan joints NOTICE Damage to property Improper mounting of the cardan joint may result in damage or malfunc tions Ensure that the folding cardan joint does not damage the expansion bel lows during mounting Ensure that the angle of deflection α is no greater than 20 Ensure that the angle of deflection α is the same on both cardan joints ...

Page 125: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 125 4349322 01 EN VACUTAP VV Figure 125 Angle of deflection α ...

Page 126: ...drive shaft with cardan joints proceed as follows 1 Grease coupling bolts coupling brackets and shaft ends e g ISOFLEX TOPAS L 32 Figure 126 Greasing coupling bolts coupling brackets and shaft ends Position Name Quantity 1 below on the ED Adapter ring Ø 82 102 1 2 Adapter ring Ø 87 102 5 1 ...

Page 127: ... 5 1 4 above on the CD6400 Adapter ring Ø 71 102 5 1 2 Insert adapter rings into the collar of the rotating protective tube Fit the two parts of pivotable protective tube together and turn them towards one another to set the corresponding angle Figure 127 Inserting adapter in pivotable protective tubes ...

Page 128: ...n Remove hose clip Slide up expansion bellows Remove coupling bolt Slide cardan joint over device s output shaft Push in coupling bolt Slide expansion bellows over this Secure expansion bellows with hose clip Figure 128 Mounting cardan joints 4 Connect shorter cardan joint supplied to shaft end of motor drive unit with coupling bolt Figure 129 Attaching cardan joint on shaft end of motor drive uni...

Page 129: ... to the bevel gear such that the position of both cardan joint lugs is the same on the bevel gear and motor drive unit If this is not done damage or malfunctions may result Figure 130 Fitting second cardan joint on bevel gear 6 Secure expansion bellows with hose clip Figure 131 Securing expansion bellows with hose clip ...

Page 130: ...chinenfabrik Reinhausen GmbH 2020 130 4349322 01 EN VACUTAP VV 7 Provisionally connect loose shaft ends of the joints to an angle bar and align so that they are in line Figure 132 Connecting shaft ends with angle bar ...

Page 131: ...rik Reinhausen GmbH 2020 131 4349322 01 EN VACUTAP VV 8 Determine dimension A between the shaft ends Cut square tube to LR A 100 mm LR length of square tube Deburr cut surfaces of square tube Figure 133 Shortening square tube ...

Page 132: ...A A dimension between both cardan joint ends and deburr Figure 134 Shortening telescopic tubes Dimension A distance be tween shaft ends of the drive and the bevel gear Inner tube Outer tube 260 mm Shorten to 200 mm 200 mm 261 mm 760 mm Shorten to A 60 mm 200 mm 761 mm 1 090 mm 700 mm Shorten to A 60 mm 1 091 mm 1 700 mm 700 mm 1 150 mm 1 701 mm 1 900 mm 1 150 mm 1 150 mm ...

Page 133: ...r ring to bearing collar of motor drive unit and fit other adapter ring to bearing collar of bevel gear Figure 135 Fitting adapters 11 Slide previously shortened and deburred square tube over upper cardan joint end until stop is reached Figure 136 Sliding square tube over upper cardan joint end ...

Page 134: ...schinenfabrik Reinhausen GmbH 2020 134 4349322 01 EN VACUTAP VV 12 Thread upper pivotable protective tube with long outlet up onto square tube from below Figure 137 Sliding pivotable protective tube over square tube ...

Page 135: ...ik Reinhausen GmbH 2020 135 4349322 01 EN VACUTAP VV 13 Slide inner tube into outer tube such that the slotted sides of the outer and inner tube are both facing down Thread the hose clips Figure 138 Sliding on telescopic tubes ...

Page 136: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 136 4349322 01 EN VACUTAP VV 14 Slide everything up and secure with a screw clamp Figure 139 Secure everything with a screw clamp ...

Page 137: ...nhausen GmbH 2020 137 4349322 01 EN VACUTAP VV 15 Slide bottom pivotable protective tube also with long outlet up on to the square tube and secure with screw clamp Figure 140 Sliding bottom pivotable protective tube over square tube ...

Page 138: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 138 4349322 01 EN VACUTAP VV 16 Swing in square tube and slide all the way down Figure 141 Pivoting square tube back to axis ...

Page 139: ...UTAP VV 17 Push the lower coupling bolt in and grease Tighten lower coupling brackets Shaft end and coupling part must be securely connected such that no axial clearance remains between the coupling bolt and coupling bracket Figure 142 Tightening lower coupling brackets ...

Page 140: ...sition between both parts of pivotable protective tube and fix with available hose clip Secure both upper and lower pro tective tubes with a hose clip at both ends Secure the two telescopic protective tubes to one another using a hose clip The plastic adapters must be at the respective end of the pivotable protec tive tube Only slide telescopic protective tube into upper and lower piv otable prote...

Page 141: ... EN VACUTAP VV Figure 144 Securing telescopic protective tube and pivotable protective tubes with hose clips 5 4 6 4 Fitting drive shaft with insulator A model with insulator in the vertical drive shaft is available for insulating in stallation of the drive shaft ...

Page 142: ... mm per 1000 mm square tube length that corresponds to 2 Figure 145 Permitted maximum axial displacement of vertical drive shaft with insulator 5 4 6 4 1 Fitting vertical drive shaft with insulator To fit the vertical drive shaft proceed as follows 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 advertent...

Page 143: ...5 Mounting Maschinenfabrik Reinhausen GmbH 2020 143 4349322 01 EN VACUTAP VV 2 Screw the bevel gear for mounting on the transformer Screws are not in cluded in the scope of supply Figure 146 Bevel gear ...

Page 144: ...ausen GmbH 2020 144 4349322 01 EN VACUTAP VV 3 Determine dimension A between shaft end of drive and shaft end of bevel gear Shorten square tube to length of A 179 mm taking the insulator into account Figure 147 Shortening square tube ...

Page 145: ...AP VV 4 Deburr cut surfaces of square tube Figure 148 Deburring cut surfaces 5 Screw down double coupling part with insulator supplied and square tube Mount insulator on the side facing the drive Figure 149 Screwing down square tube and insulator with double coupling part ...

Page 146: ...ding coupling part onto insulator 7 Place the supplied insulator ring on the bearing collar of the motor drive unit Figure 151 Insulating ring 8 Insert coupling bolt into shaft end of drive Grease coupling part coupling bolt and shaft end e g ISOFLEX TOPAS L32 Slide square tube with coupling part onto shaft end Figure 152 Sliding square tube with coupling part onto shaft end ...

Page 147: ...e Figure 153 Attaching square tube to drive 10 Pivot square tube away from axis Figure 154 Pivoting square tube away from axis 11 When installing inner tube of telescopic protective tube shorten on the side without slots if necessary The minimum dimension for overlapping the two protective tubes is 100 mm ...

Page 148: ...rred in order to slide easily in the outer tube Figure 155 Deburring inner tube Dimension A distance between shaft end of drive and shaft end of bevel gear Inner tube Outer tube 170 mm 190 mm Shorten to 200 mm 200 mm 191 mm 1 130 mm Dimension A 20 mm 200 mm 1 131 mm 1 598 mm 700 mm 1 150 mm 1 599 mm 2 009 mm 1 150 mm 1 150 mm ...

Page 149: ... 12 Slide outer tube over inner tube When doing so make sure that the non slotted side of the inner tube is facing upwards Slide telescopic protec tive tube onto square tube Then slide hose clips over telescopic protec tive tube Figure 156 Sliding on telescopic protective tube ...

Page 150: ...bH 2020 150 4349322 01 EN VACUTAP VV 13 Place adapter ring over bearing collar of bevel gear and slide upwards Insert coupling bolt into shaft end of bevel gear Pivot square tube back to axis Figure 157 Fitting adapter ring and coupling bolt ...

Page 151: ...vel gear Set a unilateral axial clearance of 3 mm between the coupling bolt and upper coupling piece Figure 158 Mounting coupling brackets 15 Attach bottom protective tube inner tube with a hose clip to bearing col lar of drive Then slide upper protective tube outer tube over adapter on bevel gear Secure upper protective tube to bottom protective tube with hose clip both at top end and at the conn...

Page 152: ...4349322 01 EN VACUTAP VV Figure 159 Mounting protective tube 5 4 6 5 Fitting drive shaft with insulator and cardan joint A model with insulator and cardan joint in the vertical drive shaft is also available for insulating installation of the drive shaft ...

Page 153: ...lacement of vertical drive shaft with insulator and car dan joint 5 4 7 Centering on load tap changer and motor drive unit Center on load tap changer and motor drive unit as described in relevant MR operating instructions for motor drive unit 5 4 8 Making the electrical connections for the motor drive unit Make electrical connections for the motor drive unit as described in rele vant MR operating ...

Page 154: ...tive 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 accorda...

Page 155: ...emove screw cap on air vent valve E1 on the on load tap changer head cover Figure 161 Air vent valve E1 3 Use screwdriver to lift valve tappet on air vent valve E1 and bleed on load tap changer head Figure 162 Valve tappet 4 Seal air vent valve E1 with screw cap tightening torque 10 Nm ...

Page 156: ...nt screw and bleed piping 3 Close vent screw 4 Seal vent screw with screw cap 6 1 2 Grounding the on load tap changer 1 Connect grounding screw on the on load tap changer head to transformer cover It is essential that CUPAL washers be placed directly on the con necting lug on both sides The aluminum side of the CUPAL washers must be facing the connecting lug Figure 164 Grounding screw on on load t...

Page 157: ...asher must be facing the connecting lug Figure 165 Grounding screw on motor drive unit 3 When using a temperature sensor connect housing of temperature sen sor with grounding screw on the on load tap changer head or another grounding point on the transformer It is essential that a CUPAL washer be placed between the cable shoe and temperature sensor housing The aluminum side of the CUPAL washer mus...

Page 158: ... tap changer inspection window in the on load tap changer head match Dielectric tests on transformer wiring Note information relating to dielectric tests on transformer wiring in rele vant MR operating instructions for motor drive unit 6 1 4 High voltage tests on the transformer Note the following points before performing high voltage tests on the trans former Ensure that the oil compartment of th...

Page 159: ...tly closed In the event of downtime lasting more than 8 weeks prior to initial com missioning connect and operate the anti condensation heater in the mo tor drive unit If this is not possible place a sufficient amount of desiccant in the protective housing 6 2 1 Transport with drive removed 1 Ensure that the drive and the on load tap changer are in the adjustment position 2 Remove the drive 3 Do n...

Page 160: ...nt 6 2 3 Transport with empty transformer tank NOTICE Damage to the on load tap changer The on load tap changer may be subject to oscillating movements during transformer transportation if the transformer is transported without insulating fluid and the on load tap changer oil compartment is transported with insu lating fluid These oscillating movements can lead to damage to the on load tap changer...

Page 161: ... screws M10 wrench size 17 and locking elements tightening torque 34 Nm 6 2 3 2 Emptying oil compartment without oil suction pipe 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 build up of static...

Page 162: ... tap changer head cover tightening torque 34 Nm 6 3 Commissioning transformer at operating site Before energizing the transformer check that the motor drive unit and pro tective devices are functioning correctly and fill the on load tap changer oil compartment with fresh insulating fluid 6 3 1 Filling the oil compartment of the on load tap changer with insulating fluid NOTICE Damage to the on load...

Page 163: ...ctions of the on load tap changer head Figure 169 Pipe connections S and R 4 Take an insulating fluid sample from the oil compartment 5 Record the temperature of the sample immediately after the sample is taken 6 Determine dielectric strength and water content at a sample temperature of 20 C 5 C The dielectric strength and water content must comply with the limit values specified in the technical ...

Page 164: ...emove screw cap on air vent valve E1 on the on load tap changer head cover Figure 170 Air vent valve E1 3 Use screwdriver to lift valve tappet on air vent valve E1 and bleed on load tap changer head Figure 171 Valve tappet 4 Seal air vent valve E1 with screw cap tightening torque 10 Nm ...

Page 165: ... 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 is fully immersed in insulating fluid and that the oil compartment of ...

Page 166: ...it and on load tap changer are correctly coupled 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 En...

Page 167: ...r and affix using the slotted head screw 16 Attach the terminal box cover and secure with screws 6 3 4 2 Checking protective relay RS 2004 ü Check that the protective relay is functioning correctly before commission ing the transformer 1 Ensure that the flap valve is in the OPERATION position 2 Leave the transformer s danger zone 3 Close the transformer s circuit breaker with isolating switches op...

Page 168: ...act for falling below the minimum insulating fluid fill level in the on load tap changer s oil conservator is looped into the tripping cir cuit of 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 o...

Page 169: ...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 inter...

Page 170: ...d tap changer head cover On load tap changer and transformer must be checked Depending on the cause of tripping take measurements carry out checks on the transformer Contact MR to check the on load tap changer Tripping of motor protective switch in motor drive unit See chapter Fault elimination in the operating instruc tions of the TAPMOTION ED motor drive unit Tripping of signaling contact that i...

Page 171: ...rotective relay can deflagrate or explode and result in severe injury or death Wait 15 minutes after switching off the transformer before beginning fur ther work on the protective relay so that the gases can dissipate Ensure that there are no ignition sources such as naked 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 ...

Page 172: ...not tripped due to an error in the tripping circuit also proceed as described below for RS 2004 If the flap valve is in the OFF position proceed as follows 1 Ensure that the transformer is not started up under any circumstances 2 Contact and inform Maschinenfabrik Reinhausen of the following ð Serial number of protective relay and on load tap changer ð What was the load of the transformer at the i...

Page 173: ...ating position of on load tap changer 3 As a precaution block the motor drive unit by tripping the motor protective switch to prevent the on load tap changer from being actuated by remote control 4 Check the on load tap changer head cover If insulating fluid is leaking close the oil conservator stop valve immediately 5 Check whether the pressure monitoring device sensor is in the OFF posi tion or ...

Page 174: ...n the network being carried out at the in stant of tripping ð Were overvoltages registered at the instant of tripping ð How high is the static pressure on the pressure relief device height dif ference between the oil level in the on load tap changer oil conservator and the pressure relief device 3 Take further action in agreement with Maschinenfabrik Reinhausen 7 2 3 Re commissioning the transform...

Page 175: ...ted frequency Hz 50 60 Number of operating positions Without change over selector maximum 12 With change over selector maximum 23 With change over selector maxi mum 23 1 See also step capacity diagram 2 600 A model on request Table 9 Electrical data for VACUTAP VV Mechanical data for VACUTAP VV On load tap changer VV III 40 kV VV III 76 kV VV III 145 kV VV I 76 kV VV III 145 kV Weight without insu...

Page 176: ...e protective relay RS 2001 is listed in the following In accordance with DIN EN 60255 1 operational accuracy base accuracy Housing Outdoor model Degree of protection IP66 Relay actuation Flap valve with aperture Weight approx 3 5 kg Oil flow speed of available types when tripping oil temperature 20 C 0 65 0 15 m s 1 20 0 20 m s 3 00 0 40 m s 4 80 0 60 m s Table 12 General technical data Tripping c...

Page 177: ...ric strength between all volt age carrying connections and the grounded parts 2 500 V 50 Hz test duration 1 minute AC dielectric strength between the opened contacts 2 000 V 50 Hz test duration 1 minute Table 15 Dielectric strength Electrical data for normally open NO dry reed magnetic switch Electrical data DC switching capacity 1 2 W 250 W AC switching capacity 50 Hz 1 2 VA 400 VA Switching volt...

Page 178: ...re 130 C Air pressure Corresponds to 0 m 4 000 m above sea level Table 19 Ambient conditions 8 3 Special models of protective relay 8 3 1 Protective relay with CO change over contact as tripping switch The protective relay can be supplied with a dry reed magnetic switch CO change over variant 3 see dimensional drawing supplied Electrical data for CO change over dry reed magnetic switch Electrical ...

Page 179: ...0 V 50 Hz test duration 1 minute Table 22 Dielectric strength 8 3 2 Protective relay with several dry reed magnetic switches The protective relay can be supplied with several independent dry reed mag netic switches These 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...

Page 180: ...switching pressure 3 8 0 2 bar trip pressure Lower switching pressure 2 8 0 2 bar Snap action switch Connection terminals Lead connection 1 or 2 leads per terminal Ø 0 75 2 5 mm Contacts 1xNO normally open 1xNC normally closed Utilization category IEC 60947 5 1 AC 15 230 V 1 A DC 13 60 V 0 5 A Maximum continuous current 10 A Rated insulation voltage AC 2 5 kV min Table 23 General technical data ...

Page 181: ...ssioning 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 24 Insulating fluids in accordance with IEC 60296 Limit values for natural esters in ac cordance with IEC 62770 Ud H2O When commissioning the transformer for the first time 60 kV 2 5 mm 100 ppm During operation 30 kV 2 5 mm 200 ppm After maintenance 50 kV...

Page 182: ...9 Drawings Maschinenfabrik Reinhausen GmbH 2020 182 4349322 01 EN VACUTAP VV 9 Drawings ...

Page 183: ...o No Date Name 0E 737774 0E On Load Tap Changer VACUTAP VV Classification SPL 20 01 09 11 Change over selector pipe 12 Change over selector terminal 13 Change over selector terminal 0 14 Change over selector terminal 21 Take off terminal 22 Fine tap selector terminal 23 Oil compartment bottom with kerosene drain plug 23a 24 Tap changer oil compartment 30 Tap changer head complete with 31 und 32 re...

Page 184: ...ger Tap Changer head bottom part Tap Changer head top part can be turned towards the bottom part 31 of the head in steps of 15 The Tap Changer head cover cannot be turned Pipe connection R for protective relay Pipe connection S Pipe connection Q optional E2 Bleeding facility for space under the head outside the oil compartment Upper gear unit with drive shaft 37a dimensions and selection see 737 7...

Page 185: ...t of the grant of a patent utility model or design DIN A1 SPL 21 01 09 1019535 SPL 19 01 09 1019489 Ch In Chango No Date Name 0E 0E 737060 0E ON LOAD TAP CHANGER VACUTAP V V OLTC HEAD WITH OIL SUCTION PIPE SPL 19 01 09 ALL OTHER DIMENSIONS OF THE OLTC HEAD SEE DRAWING 898 863 POSITION OF THE UPPER PART OF THE OLTC HEAD IN THE MODEL WITH OIL SUCTION PIPE 32 15 DRIVE SIDE M THE UPPER PART OF THE OLT...

Page 186: ...oad Tap Changer VACUTAP V V Installation drawing SPL 21 01 09 15 45 max 12 M 570 O 630 O 660 O Transformer cover 7 5 1 5 1 5 2 4 x 3 6 0 v Withdrawal height Mounting flange on transformer cover 2310 mm 1910 mm 1070 mm 920 mm V V III 76 kV V V III 40 kV V V III 145 kV V V I 145 kV V V I 76 kV On Load Tap Changer Withdrawal height The withdrawal height corresponds to the clearance between the cover ...

Page 187: ...he payment of damages All rights reserved in the event of the grant of a patent utility model or design DIN A2 Ch In Change No Date Name dftr chkd 739172 0E On Load Tap Changer VACUTAP V V Oil suction pipe optional SPL 05 02 09 A A A A 1 5 Oil suction pipe M 32 Drive side M The upper part of the OLTC head 32 CANNOT be turned in the model with oil suction pipe see drawing 737 060 Pipe connection S ...

Page 188: ......

Page 189: ...Geschmacksmustereintragung vorbehalten 8988668E On Load Tap Changer VACUTAP V V assembly drawing cover mounting Str 22 11 02 4D 028788 03 07 00 DC 5E 037102 05 11 01 EN Albrecht R 6E 042782 21 11 02 DC 7E 043849 18 12 02 DC 8E 1006204 02 02 06 SPL 43 Width of gasket max 46 Transformer cover 49 20 Lifting device optional 712645 only with 145 kV O ring Centering bolts 3x A A A A 660 O Attention Make...

Page 190: ...ung vorbehalten 8991104E On Load Tap Changer VACUTAP V V assembly drawing bell type mounting Str 22 11 02 1E 035102 05 11 01 EN Albrecht R 2E 042782 21 11 02 DC 3E 043849 18 12 02 DC 4E 1006204 02 02 06 SPL 43 Width of gasket max 46 Transformer cover 49 20 15 5 10 Support on the transformer Lifting device optional 712645 Supporting flange only with 145 kV O ring Centering bolts 3x A A A A 26 660 O...

Page 191: ...ster oder Geschmacksmustereintragung vorbehalten 8994093E On Load Tap Changer VACUTAP V V DC 22 11 02 DIN A3 NEU 037102 05 11 01 EN 1E 042782 21 11 02 DC 2E 043849 18 12 02 DC 3E 1006204 08 02 06 SPL Positioning of OLTC for bell type mounting Albrecht R Support on transformer Ensure free movement of change over selector lever X only with 145 kV Swivelling range Support on transformer Swivelling ra...

Page 192: ... 26 11 02 DC 1 STC R TTS TTV MSV MTS 2 3 4 5 6 7 8 9 STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS STC R TTS TTV MSV MTS C I ca 150 ms 50 ca ms MTS MSV TTS TTV 0 1 0 1 0 1 0 1 n 1 n C MTS MSV TTS TTV STC R I Tap selector contacts main path Main switching contacts vacuum interrupter main path...

Page 193: ...1 01 09 Take off terminal optional 5 max If necessary compensate with washers If necessary compensate with washers max 5 Take off terminal optional not possible with potential connection 1 2 3 Take off terminal standard These take off terminals with or without take off leads are to be fitted with screening caps included in MR s delivery by the transformer manufacturer 21 Take off terminal 22 Fine ...

Page 194: ...ility model or design DIN A1 SPL 27 08 07 1012523 Ch In Chango No Date Name 0E 7334690E On Load Tap Changer VACUTAP V V SPL 27 08 07 Design with tap change supervisory control Note Take care when when installing the electrical lines so that they do not obstruct the OLTC cover when it is opened for maintenance Terminal block M20 x 1 5 Clamping area ø7 ø13 mm Position indicator with triangle for adj...

Page 195: ......

Page 196: ...ximum 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 NPT National Pipe Thread US thread standard ...

Page 197: ......

Page 198: ...enfabrik Reinhausen GmbH Falkensteinstrasse 8 93059 Regensburg 49 0 941 4090 0 sales reinhausen com www reinhausen com 4349322 01 EN VACUTAP VV 04 20 Maschinenfabrik Reinhausen GmbH 2020 THE POWER BEHIND POWER ...

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