MR VACUTAP VR Installation And Commissioning Instructions Download Page 8

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Table of contents

Maschinenfabrik Reinhausen GmbH 2015

4349315/00 EN

VACUTAP® VR®

11.2.2

Checking protective relay (RS 2004)................................................................................................................. 218

11.3

Checking pressure monitoring device............................................................................................. 219

11.4

Filling the oil compartment of the on-load tap-changer with oil....................................................... 219

11.5

Commissioning the transformer....................................................................................................... 221

Fault elimination.............................................................................................................. 223

12.1

Tripping of the protective relay and re-commissioning the transformer........................................... 225

12.1.1

Flap valve in IN SERVICE position................................................................................................................... 225

12.1.2

Flap valve in OFF position................................................................................................................................. 225

12.1.3

Re-commissioning the transformer................................................................................................................... 226

12.2

Tripping the pressure-operated relay and putting the transformer back into operation................... 226

12.2.1

Sensor in the OPERATION position.................................................................................................................. 227

12.2.2

Sensor in the OFF position................................................................................................................................ 227

12.2.3

Re-commissioning the transformer................................................................................................................... 227

Technical data................................................................................................................. 228

13.1

Technical data for protective relay................................................................................................... 228

13.2

Special models of protective relay................................................................................................... 229

13.2.1

Protective relay with CO change-over contact as tripping switch ..................................................................... 229

13.2.2

Protective relay with several dry-reed magnetic switches................................................................................. 229

13.3

Technical data for pressure monitoring device................................................................................ 230

Appendix.......................................................................................................................... 231

14.1

Limit values for dielectric strength and water content of on-load tap-changer oil............................ 231

14.2

VACUTAP® VRC/VRE, installation drawing (899992).................................................................... 232

14.3

VACUTAP® VRD/VRF, installation drawing (899898).................................................................... 233

14.4

VACUTAP® VRG, installation drawing (899945)............................................................................ 234

14.5

VACUTAP® VRC/VRE, installation position of selector connection contacts (727042).................. 235

14.6

VACUTAP® VRD/VRF/VRG, fine tap selector connection contact and change-over selector
connection contact (899941)........................................................................................................... 236

14.7

VACUTAP® VRF, bridges to parallel connection of tap selector connection contacts (786919).... 237

14.8

VACUTAP® VRG, bridges to parallel connection of tap selector connection contacts (786920).... 238

14.9

VACUTAP® VR, special design for bell-type tank installation (720781)......................................... 239

14.10

VACUTAP® VR, lifting device for bell-type tank installation (720845)............................................ 240

14.11

VACUTAP® VR, on-load tap-changer head (720847).................................................................... 241

14.12

VACUTAP® VR, on-load tap-changer head with flange for pressure relief device (899946).......... 242

14.13

VACUTAP® VR, pipe connection Q with connecting terminals of tap-change supervisory control
(899648).......................................................................................................................................... 243

Summary of Contents for VACUTAP VR

Page 1: ...On Load Tap Changer VACUTAP VR Installation and Commissioning Instructions 4349315 00 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: ...ation 15 2 2 Appropriate use 15 2 3 Inappropriate use 16 2 4 Personnel qualification 16 2 5 Operator s duty of care 17 2 6 Personal protective equipment 17 2 7 Protective devices 18 2 7 1 Protective relay RS 19 2 7 2 Pressure monitoring device 19 2 7 3 Rupture disk 19 2 7 4 Pressure relief device MPreC 19 2 7 5 Tap change supervisory control 19 2 7 6 Temperature monitoring 19 2 7 7 Protective devi...

Page 4: ... 1 Fitting mounting flange on transformer cover 40 5 1 2 Fitting stud bolts on mounting flange 41 5 2 Fastening on load tap changer to transformer cover 41 5 2 1 Fastening oil compartment of the on load tap changer on transformer cover 41 5 2 2 Securing tap selector on oil compartment of the on load tap changer VRC VRE 46 5 2 3 Securing tap selector on oil compartment of the on load tap changer VR...

Page 5: ...ting flange on transformer cover 90 6 1 2 Fitting stud bolts on mounting flange 91 6 2 Inserting on load tap changer into supporting structure 91 6 2 1 Securing tap selector on oil compartment of the on load tap changer VRC VRE 91 6 2 2 Securing tap selector on oil compartment of the on load tap changer VRD VRF 94 6 2 3 Securing tap selector on oil compartment of the on load tap changer VRG 96 6 2...

Page 6: ...the oil suction pipe 121 6 7 7 Lifting on load tap changer head off supporting flange 123 6 8 Attaching bell type tank and connecting on load tap changer head with on load tap changer 124 6 8 1 Mounting the bell type tank 124 6 8 2 Mounting on load tap changer head on bell type tank 126 6 8 3 Connecting on load tap changer head and on load tap changer 127 6 8 4 Inserting oil suction pipe 130 6 8 5...

Page 7: ... electrics for motor drive unit 208 9 Commissioning of on load tap changer by transformer manufacturer 209 9 1 Bleeding on load tap changer head and suction pipe 209 9 1 1 Bleeding on load tap changer head 209 9 1 2 Bleeding suction pipe on pipe connection S 210 9 2 Grounding the on load tap changer 210 9 3 Performing tests on motor drive unit 211 9 3 1 Performing function tests 211 9 3 2 Dielectr...

Page 8: ...h several dry reed magnetic switches 229 13 3 Technical data for pressure monitoring device 230 14 Appendix 231 14 1 Limit values for dielectric strength and water content of on load tap changer oil 231 14 2 VACUTAP VRC VRE installation drawing 899992 232 14 3 VACUTAP VRD VRF installation drawing 899898 233 14 4 VACUTAP VRG installation drawing 899945 234 14 5 VACUTAP VRC VRE installation position...

Page 9: ...or division 10 2 5 coarse tap connections 731412 254 14 23 VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 12 2 5 coarse tap connections 731411 255 14 24 VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 14 2 5 coarse tap connections 731410 256 14 25 VACUTAP VRC adjustment plan with multip...

Page 10: ...nd on the delivery docu ments VACUTAP VR on load tap changer Protective relay RS 2001 Pressure monitoring device DW 2000 optional Drive shaft Manufacturer The product is manufactured by Maschinenfabrik Reinhausen GmbH Falkensteinstraße 8 93059 Regensburg Germany Tel 49 9 41 40 90 0 Fax 49 9 41 40 90 7001 E mail sales reinhausen com Further information on the product and copies of this technical fi...

Page 11: ...Technical data Product specific section available on request Also observe generally valid legislation standards and guidelines as well as specifications on accident prevention and environmental protection in the re spective country of use Safekeeping This technical file and all supporting documents must be kept ready at hand and accessible for future use at all times Notation conventions This sect...

Page 12: ... a ruler Use a saw Hose clip Wire eyelet safety wire Use a screwdriver Table 1 Symbols Hazard communication system Warnings in this technical file are displayed as follows Warning relating to section Warnings relating to sections refer to entire chapters or sections sub sec tions or several paragraphs within this technical file Warnings relating to sections use the following format 1 7 2 1 7 2 1 ...

Page 13: ...words and pictograms The following signal words are used Signal word Meaning DANGER Indicates a hazardous situation which if not avoided will re sult in death or serious injury WARNING Indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a hazardous situation which if not avoided could result in injury NOTICE Indicates measures to be taken ...

Page 14: ...P VR Pictogram Meaning Warning of danger of tipping Table 3 Pictograms used in warning notices Information system Information is designed to simplify and improve understanding of particular procedures In this technical file it is laid out as follows Important information 1 7 3 ...

Page 15: ...operation to disas sembly and disposal The operational quality assurance system ensures a consistently high quality standard particularly in regard to the observance of health and safety re quirements The following is considered appropriate use Only operate the product in accordance with this technical file and the agreed delivery conditions and technical data Use the equipment and special tools s...

Page 16: ...urrent is not exceeded Such an operating condition can oc cur due to overexcitation of the transformer after load shedding for example The on load tap changer can be operated in the temperature range of the surrounding transformer oil of between 25 and 105 C and with overload up to 115 C in accordance with IEC 60214 1 Inappropriate use Use is considered to be inappropriate if the product is used o...

Page 17: ...sed when in a sound operational condition and safety equipment in particular is checked regularly for operational relia bility Only replacement parts lubricants and auxiliary materials which are au thorized by the manufacturer are used The specified operating conditions and requirements of the installation location are complied with All necessary devices and personal protective equipment for the s...

Page 18: ...e 4 Personal protective equipment to be worn at all times Wear the following in spe cial environments Special personal protective equipment is needed in special environments The choice of equipment depends on the circumstances Safety glasses To protect the eyes from flying parts and splashing liquids Hard hat To protect from falling and flying parts and materials Hearing protection To protect from...

Page 19: ...he respective applicable version of IEC publication 60214 1 Rupture disk The rupture disk is a pressure relief device without signaling contact in ac cordance with IEC 60214 1 and is located in the on load tap changer head cover The rupture disk responds to a defined overpressure in the oil compartment of the on load tap changer Pressure relief device MPreC On request in place of the rupture disk ...

Page 20: ...P VR Protective devices in the motor drive unit The following protective devices are fitted in the motor drive unit End stop device mechanical and electric Device protecting against unintentional passage Motor protection device Protection against accidental contact 2 7 7 ...

Page 21: ...et 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 on ly be removed immediately before installation You will find more information in the Packaging transport and storage 36 chapter Also refer ...

Page 22: ...o the operating 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 Performance features The on load tap changer is particularly characterized by the following prop erties No arcing in the insul...

Page 23: ...ap selector mounted be low also available with change over selector on request The design and designation of the most important on load tap changer com ponents are shown in the installation drawings in the appendix For the number of maximum operating positions of the on load tap changer refer to the Technical data Figure 2 VACUTAP VRC VRE 1 On load tap changer head 3 Tap selector 2 Oil compartment...

Page 24: ...3 Product description Maschinenfabrik Reinhausen GmbH 2015 24 4349315 00 EN VACUTAP VR Figure 3 VACUTAP VRD VRF 1 On load tap changer head 3 Tap selector 2 Oil compartment 4 Change over selector ...

Page 25: ...n GmbH 2015 25 4349315 00 EN VACUTAP VR Figure 4 VACUTAP VRG 1 On load tap changer head 3 Tap selector 2 Oil compartment 4 Change over selector Pipe connections The on load tap changer head features 4 pipe connections for different pur poses 3 2 3 1 ...

Page 26: ... The pipe bend on pipe connection S is provided with a vent screw Connect pipe bend on a pipe that ends with a drain valve on the side of the transform er tank at operating height Pipe connection Q Pipe connection Q is closed with a blank cover and is intended for the bush ing of the tap change supervisory control supplied as an option or for con necting the oil filter unit The functions of the R ...

Page 27: ... from vertical to horizontal see drawing 892916 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 changer or off circuit tap changer Performance features The product is particularly characterized by the following properties Resistance to corrosion Setup models of drive shaft The drive shaft consists...

Page 28: ...uration V 1 min mm Intermediate bearing for mm Middle of hand crank middle of bevel gear maximum permissi ble axial offset 2 536 V 1 2 472 Drive shaft without cardan shaft with insulator special model Figure 8 Drive shaft without cardan shaft with insulator special model Configuration V 1 min mm Intermediate bearing for mm Middle of hand crank middle of bevel gear maximum permissi ble axial offset...

Page 29: ...Intermediate bearing for mm Middle of hand crank middle of bevel gear maximum permissi ble axial offset alpha 20 798 V 1 2 564 Drive shaft with cardan shaft with insulator special model Figure 10 Drive shaft with cardan shaft with insulator special model Configuration V 1 min mm Intermediate bearing for mm Middle of hand crank middle of bevel gear maximum permissi ble axial offset alpha 20 978 V 1...

Page 30: ...ized The protective relay is part of an oil insulated on load tap changer and its properties conform to IEC publication 60214 1 of the valid version There fore it is part of the scope of our delivery Diverter switch operations at rated switching capacity or at permissible over load will not cause the protective relay to trip The protective relay responds to oil flow not to gas accumulated in the p...

Page 31: ...0 EN VACUTAP VR Setup models of protective relay Figure 11 RS 2001 1 Inspection window Figure 12 RS 2001 1 Dummy plug 3 Ventilation for terminal box 2 Identification plate The protective relay RS 2001 R has an extra inspection window on the rear 3 4 3 Front view Rear view ...

Page 32: ...st tripping test button The protective relay RS 2003 and RS 2004 has a 1 2 14NPT adapter in place of the cable connection position 7 Pressure monitoring device DW Function description The DW 2000 pressure operated relay protects the on load tap changer from unacceptable pressure increases contributing to the safety of the transformer The pressure operated relay is installed on the outside of the o...

Page 33: ...ge pressure increases The RS 2001 protective relay is part of the default MR protection system that comes standard Additional use of a pressure operated relay also requires installation of the provided RS 2001 protective relay The features and characteristics of the pressure operated relay comply with the respective applicable version of IEC publication 60214 1 Diverter switch operations at the ra...

Page 34: ...ure operated relay consists of a pressure measuring element and an adjacent snap action switch Figure 14 Snap action switch and pressure measuring element 1 Snap action switch 2 Pressure measuring element The snap action switch has a normally open switch and normally closed switch with snap action ...

Page 35: ...he pres sure operated relay Figure 15 Pressure operated relay with cover cap and ventilation 1 Ventilation 2 Cover cap There are two variants of the pressure operated relay DW 2000 for vertical installation and fastening on the on load tap changer head DW 2000 for horizontal installation and fastening on a pipe bend The housing and the cover cap of the pressure operated relay consist of lightweigh...

Page 36: ...ns of transportation in compliance with local transportation laws and regulations The packaged goods are packed in a stable crate This crate ensures that the packaged goods are secure when in the intended transportation position and that none of the parts touch the loading surface of the means of trans port or touch the ground after unloading The packaged goods are stabilized inside the crate to p...

Page 37: ...delivery slip External damage of any type The checks must take place after unloading when the crate or transport con tainer can be accessed from all sides If external transport damage is detected on receipt of the shipment proceed as follows Immediately record the transport damage found in the shipping docu ments and have this countersigned by the carrier In the event of severe damage total loss o...

Page 38: ...s Packaged goods dried by Maschinenfabrik Reinhausen Upon receipt of the shipment immediately remove the packaged goods dried by Maschinenfabrik Reinhausen from the sealed packaging and store air tight in dry insulating oil until used Non dried packaged goods Non dried packaged goods but with a functional sealed packaging can be stored outdoors when the following conditions are complied with When ...

Page 39: ...idity 50 where possible Unpacking shipments and checking for transportation damages NOTICE Transport the packaged crate to the place where installation will take place Do not open the sealed packaging until just before instal lation If this is not done damage to the packaged goods may occur due to ineffectively sealed packaging WARNING When unpacking check the condition of the packaged goods Secur...

Page 40: ...not switch the on load tap changer when working on the selector and change over selector This chapter describes how to install a standard design on load tap changer in a transformer and how to dry it Preparatory work Perform the work stated below before installing the on load tap changer in the transformer Fitting mounting flange on transformer cover A mounting flange is required for fitting the o...

Page 41: ...stallation 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 Fastening on load tap changer to transformer cover Fastening oil compartment of the on load tap changer on transformer cover 1 CAUTION Prior to installing the on load tap changer remove the red colored packagi...

Page 42: ...he oil compartment on a level surface and secure it against tipping An unstably positioned oil compartment may tip over resulting in serious injuries and damage 3 Clean sealing surfaces on mounting flange and on load tap changer head place oil resistant gasket on mounting flange Figure 18 Sealing surfaces seal ...

Page 43: ... VACUTAP VR 4 Lift the oil compartment by hooking up the on load tap changer head and carefully lower the oil compartment into the cover opening of the transformer Figure 19 Oil compartment 5 Check that the on load tap changer head is mounted in the position specified by the design ...

Page 44: ...H 2015 44 4349315 00 EN VACUTAP VR 6 Screw on load tap changer head to mounting flange Figure 20 On load tap changer head with mounting flange 7 Remove the blocking device from the coupling of the oil compartment base Figure 21 VACUTAP VRC VRE blocking strip ...

Page 45: ...5 Assembly Standard design Maschinenfabrik Reinhausen GmbH 2015 45 4349315 00 EN VACUTAP VR Figure 22 VACUTAP VRD VRF blocking plate and shackle Figure 23 VACUTAP VRG blocking plate and shackle ...

Page 46: ...nstably positioned selector may tip resulting in serious injuries and damage 2 Remove plastic bag with fastening materials from the selector and lay out Figure 24 Plastic bag with fastening materials 3 Remove the blocking strip from the selector coupling Once the blocking strip is removed the selector coupling must no longer be turned Figure 25 Blocking strip 4 Place the selector on the lifting de...

Page 47: ... of both coupling parts and attachment points on the oil compartment and the selector with one another The correct position of the two coupling parts is shown in the adjustment plans in the appendix 7 Screw selector onto oil compartment Figure 26 Selector with oil compartment Securing tap selector on oil compartment of the on load tap changer VRD VRF 1 WARNING Place the selector on a level surface...

Page 48: ...als from the selector and lay out Figure 27 Plastic bag with fastening materials 3 Remove the blocking strip from the selector coupling Once the blocking strip is removed the selector coupling must no longer be turned Figure 28 Blocking strip 4 Place the selector on the lifting device The weight of the selector is a maximum of 270 kg ...

Page 49: ...do not touch the oil compart ment If this is not done the selector take off leads may be damaged 7 Align the position of both coupling parts and attachment points on the oil compartment and the selector with one another The correct position of the two coupling parts is shown in the adjustment plans in the appendix 8 Screw selector onto oil compartment Figure 30 Selector with oil compartment 9 Remo...

Page 50: ...tably positioned selector may tip resulting in serious injuries and damage 2 Remove plastic bag with fastening materials from the selector and lay out Figure 31 Plastic bag with fastening materials 3 Remove the blocking strip from the selector coupling Once the blocking strip is removed the selector coupling must no longer be turned Figure 32 Blocking strip 4 Place the selector on the lifting devi...

Page 51: ...selector take off leads are free and do not touch the oil compart ment If this is not done the selector take off leads may be damaged 7 Align the position of both coupling parts and attachment points on the oil compartment and the selector with one another The correct position of the two coupling parts is shown in the adjustment plans in the appendix 8 Screw selector onto oil compartment Figure 34...

Page 52: ...E Damage to the on load tap changer Connecting leads which place mechanical strain on the on load tap changer will damage the on load tap changer Produce connections with care 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 connections The tap winding and on load tap ...

Page 53: ...ase a locking washer must be placed below each screening cap The M10 connection screws the nuts and locking washers are not included in the scope of delivery The through holes of the connection contacts are either horizontal or verti cal depending on the on load tap changer version Figure 36 Selector connection contacts Figure 37 Screening caps ...

Page 54: ...connec tion contacts Tap selector connection contacts that face both multiple course tap se lector columns must have at least 3 mm of paper insulation to ensure di electric strength In this regard please also pay attention to the dimensional drawing on which the order is based Figure 38 Paper insulation 1 Connection from MR already has 3 mm of paper insulation p Connections to be insulated Change ...

Page 55: ... se lector connection NOTICE Damage to the on load tap changer Connection leads situated too close to the change over selector s moving parts block the change over selector and therefore result in on load tap changer damage Connection 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 40 Ch...

Page 56: ...rance is identical to the fine tap selector contacts through hole for M10 screws always in verti cal position Figure 41 Change over selector connection contacts for coarse tap selector connec tion NOTICE Damage to the on load tap changer Connection leads situated too close to the change over selector s moving parts block the change over selector and therefore result in on load tap changer damage C...

Page 57: ...VR Figure 42 Change over selector connection contacts for coarse tap selector connec tion top view Selector connection contacts VRD VRF The selector connection contacts have a through hole for M12 screws The screening caps are supplied separately Figure 43 Selector connection contacts 5 3 5 ...

Page 58: ...contacts for reversing change over se lector connection Change over selector connection contacts for coarse tap selector connection VRD VRF For coarse tap selector connection the 0 and change over selector connection contacts are designed like the fine tap selector connection con tacts The change over selector connection contacts are produced as ter minal lugs of the crimped connecting lead K with...

Page 59: ...ection point must be covered by a screening cap The screening caps are designed for lateral connection with a straight cable shoe or for front connection with an angled cable shoe Figure 46 Fine tap selector connection contacts and change over selector connec tion contacts Each screening cap is attached with a steel angle piece and 2 screws The connection is secured by centre punching at the perim...

Page 60: ... are through holes 13 mm in diameter at three points on the oil com partment s connecting ring 1 Connect the on load tap changer take off lead to the connecting ring of the oil compartment 2 Secure screw connection Figure 48 On load tap changer take off lead Carrying out the transformer ratio test We recommend carrying out a transformer ratio test before the transformer is dried The following type...

Page 61: ...e on load tap changer is to be dried with kerosene in the trans former tank After drying the diverter switch insert must be removed the kerosene drain plug in the oil compartment closed and the diverter switch insert refitted In order to run the transformer ratio test we recommend using the TAPMOTION TD test drive The precise process is described in the test drive operating instructions Carrying o...

Page 62: ...er heads to one another by the horizontal drive shaft part 1 NOTICE Only move on load tap changer into the desired operating po sition 8 25 revolutions via drive shaft of the upper gear unit When us ing a drill do not exceed a maximum speed of 250 rpm The diverter switch operation can be heard distinctly 2 NOTICE After operating the diverter switch continue to crank 2 5 revo lutions in the same di...

Page 63: ...ied with kerosene in the trans former tank After drying the diverter switch insert must be removed the kerosene drain plug in the oil compartment closed and the diverter switch insert refitted Measuring DC resistance on transformer Note the measurement scenarios listed below and the associated maximum measured currents when measuring DC resistance on the transformer The measured DC current is norm...

Page 64: ... the autoclave you must remove the on load tap changer head cover and on load tap changer accessories 1 NOTICE Remove the on load tap changer head cover 24 screws M10 wrench size 17 with safety elements and store it outside the autoclave If this is not done the on load tap changer head cover may be dam aged 2 NOTICE Remove on load tap changer accessories and store outside autoclave motor drive uni...

Page 65: ...may be damaged 3 NOTICE Remove on load tap changer accessories motor drive unit drive shaft protective relay pressure monitoring device pressure relief device bevel gear temperature sensor oil filter unit and store outside autoclave If this is not done the on load tap changer accessories may be damaged Vapor phase drying in the autoclave 1 Supply kerosene vapor at a temperature of around 90 C Keep...

Page 66: ...necting lead between the corresponding pipe connections and seal off the pipe connections not being used with blank covers The on load tap changer head cover remains closed during the entire drying process 1 Establish a connecting lead either between the connections E2 and Q or connections E2 and R on the on load tap changer head Figure 52 Connecting lead 2 Seal off unused pipe connections with a ...

Page 67: ...he diverter switch insert again to close the kerosene drain plug NOTICE Damage to the on load tap changer Damage to the on load tap changer and oil suction pipe due to incorrect or der of installation Strictly adhere to the order of installation Make sure to always install the diverter switch insert before inserting the oil suction pipe into the oil compartment Removing diverter switch insert Befo...

Page 68: ...occur De energize all auxiliary circuits for example tap change supervisory control pressure relief device pressure operated relays before remov ing the on load tap changer head cover Do not operate any electric devices during the work for example risk of sparks caused by impact wrench Only use conductive and grounded hoses pipes and pump equipment that are approved for flammable liquids NOTICE Da...

Page 69: ...er and on load tap changer head are in sound condition when removing and during all other work Ensure that o ring is in sound condition too Damaged seal ing surfaces lead to oil escaping and therefore to on load tap changer and transformer damage Figure 55 On load tap changer head cover 3 NOTICE Do not expose the open oil compartment to ambient humidity for more than 10 hours If you do this may re...

Page 70: ...he shaft end and remove the tap position indica tor disc Figure 56 Tap position indicator disk Removing tap position indicator from multiple coarse change over selector with more than 35 operating positions 1 Ensure that the red marks on the panel tap position indicator disk and cover disk produce a continuous red line 2 Remove countersunk head screw Figure 57 Countersunk head screw 5 7 2 1 3 5 7 ...

Page 71: ...disk off underlying disk with flat screwdriver and pull out po sition indication disk from between panel and bracket Figure 58 Cover disk and position indication disk 4 Remove hexagon screws and associated lock tab Figure 59 Lock tab 5 Pull panel and bracket up and off indicator drive shaft Figure 60 Panel ...

Page 72: ...ntrol without due care may dam age it thereby resulting in damage to the on load tap changer and trans former Remove tap change supervisory control with care in order not to dam age or rip out the connecting leads 1 Take tap change supervisory control plug connector out of bracket and disconnect Figure 61 Plug connector 2 Remove nuts and locking elements 3 or 4 depending on model on the mounting p...

Page 73: ...00 EN VACUTAP VR 3 Remove the tap change supervisory control together with the mounting plate and drive shaft Figure 63 Tap change supervisory control with mounting plate and drive shaft 4 Remove nut and Teflon strip from stud bolt Figure 64 Stud bolt with Teflon strip and nut ...

Page 74: ...Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 65 Cable tie 2 Pull oil suction pipe out of on load tap changer head Figure 66 Oil suction pipe Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 67 Cable tie 5 7 2 1 6 5 7 2 1 7 ...

Page 75: ...e out of on load tap changer head Figure 68 Oil suction pipe 3 Swivel lead of tap change supervisory control out of on load tap chang er head in direction indicated by arrow until the cable will not be dam aged when the diverter switch insert is pulled out Figure 69 Swiveling out tap change supervisory control lead ...

Page 76: ...eyebolts of the coupling tube and position vertically above the diverter switch insert 3 Lift the diverter switch insert slowly and vertically out of oil compartment Figure 71 Diverter switch insert 4 CAUTION Place the diverter switch insert on a level surface and se cure it against tipping An unstably positioned diverter switch insert may tip resulting in injuries and damage 5 NOTICE Neither oper...

Page 77: ...ain plug all the way Figure 72 Kerosene drain plug Inserting diverter switch insert After you have inserted the diverter switch insert you have to insert the oil suction pipe and the tap position indicator and attach the on load tap chang er head cover After you have inserted the diverter switch insert you have to insert the oil suction pipe tap change supervisory control and the tap position indi...

Page 78: ...sign Maschinenfabrik Reinhausen GmbH 2015 78 4349315 00 EN VACUTAP VR Inserting diverter switch insert 1 Check that all six insulating shims are present in the energy accumula tor carrier Figure 73 Insulating shim 5 7 2 3 1 ...

Page 79: ...4349315 00 EN VACUTAP VR 2 To fit the diverter switch insert ensure that the tap selector coupling is in the adjustment position Figure 74 Adjustment markings in oil compartment base VACUTAP VRC VRE Figure 75 Adjustment markings in oil compartment base VACUTAP VRD VRF ...

Page 80: ...rter switch insert s energy accumulator is inter locked the energy accumulator s eccentric disk is at its highest point 4 Attach lifting gear to diverter switch insert and position diverter switch in sert over oil compartment 5 Align diverter switch insert such that the red markings at the top of the energy accumulator and on the on load tap changer head are opposite one another ...

Page 81: ... EN VACUTAP VR 6 Slowly lower diverter switch insert until it meets the oil compartment base Figure 77 Markings 7 Carefully press until energy accumulator carrier is in position The shape of the tap selector coupling ensures that coupling is only possible in the correct position ...

Page 82: ...n the upper edge of the coupling tube and the on load tap changer head flange Inserting oil suction pipe NOTICE Damage to the on load tap changer Damage to the on load tap changer and oil suction pipe due to incorrect or der of installation Strictly adhere to the order of installation Make sure to always install the diverter switch insert before inserting the oil suction pipe into the oil compartm...

Page 83: ...AP VR 2 Fasten oil suction pipe on retaining bracket with cable tie Figure 80 Fastening the oil suction pipe Inserting tap change supervisory control if present 1 Insert tap change supervisory control with mounting plate and drive shaft Figure 81 Mounting plate with drive shaft 5 7 2 3 3 ...

Page 84: ... VACUTAP VR 2 Check that drive shaft feather key is seated correctly in groove Figure 82 Feather key and groove 3 Secure mounting plate 3 or 4 nuts and locking elements depending on model Figure 83 Mounting plate 4 Connect plug connector outside its bracket Figure 84 Plug connector ...

Page 85: ...ket Figure 85 Plug connector in bracket 6 Attach Teflon strip with nut onto stud bolts Figure 86 Stud bolt with Teflon strip and nut Inserting the tap position indicator without multiple coarse change over selector Due to the coupling pin the tap position indicator disc can only be installed when in the correct position 5 7 2 3 4 ...

Page 86: ... drive shaft slide spring clip on to shaft end Figure 87 Tap position indicator disk Inserting tap position indicator with multiple coarse change over selector with more than 35 operating positions 1 Place panel with bracket on indicator drive shaft and fasten with hexa gon screws and associated lock tab Figure 88 Fitting panel 5 7 2 3 5 ...

Page 87: ...ting position indication disk 3 Secure cover disk with countersunk head screw The countersunk head screw must be suitable for center punching Figure 90 Fastening cover disk 4 Secure countersunk head screw by center punching Securing on load tap changer head cover 1 NOTICE Place the on load tap changer head cover on the on load tap changer head and take care not to damage the o ring inserted in the...

Page 88: ...nt resulting in on load tap chang er damage Also ensure that the red triangular marks on the on load tap changer head and the on load tap changer head cover match up Figure 91 On load tap changer head cover with o ring 2 Screw on load tap changer head cover using screws and safety ele ments Figure 92 On load tap changer head cover ...

Page 89: ...sene vapor at a temperature of around 90 C Keep this temperature constant for 3 to 4 hours 2 Increase the kerosene vapor temperature by approx 10 C hour to the desired final temperature 125 C maximum on the on load tap chang er 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 Closing kerosene drain plug 1 Remove ...

Page 90: ...t switch the on load tap changer when working on the selector and change over selector This chapter describes how to install the on load tap changer in a transform er in the bell type tank design and how to dry it Preparatory work Perform the work stated below before installing the on load tap changer in the transformer Fitting mounting flange on transformer cover A mounting flange is required for...

Page 91: ...mplate on mounting flange and use the four markings to align 2 Fit stud bolts on mounting flange Figure 95 Tracing template stud bolts Inserting on load tap changer into supporting structure Proceed as follows to insert the on load tap changer in the supporting struc ture Securing tap selector on oil compartment of the on load tap changer VRC VRE 1 CAUTION Place the tap selector on a level surface...

Page 92: ...96 Plastic bag with fastening materials 3 Remove the blocking strip from the tap selector coupling Once the blocking strip is removed the tap selector coupling must no longer be turned Figure 97 Blocking strip 4 CAUTION Place the oil compartment on a level surface and secure it against tipping An unstably positioned oil compartment may tip over resulting in serious injuries and damage ...

Page 93: ...e oil compartment by hooking up the on load tap changer head and carefully raise above tap selector 7 Align the position of both coupling parts and attachment points on the oil compartment and the tap selector with one another The correct position of the two coupling parts is shown in the adjustment plans in the appen dix 8 Screw tap selector onto oil compartment Figure 99 Tap selector with oil co...

Page 94: ... VRF 1 CAUTION Place the tap selector on a level surface and secure it against tipping An unstably positioned tap selector may tip resulting in serious injuries and damage 2 Remove plastic bag with fastening materials from the tap selector and lay out Figure 100 Plastic bag with fastening materials 3 Remove the ring nuts from the tap selector Figure 101 Ring nut 6 2 2 ...

Page 95: ...ing must no longer be turned Figure 102 Blocking strip 5 CAUTION Place the oil compartment on a level surface and secure it against tipping An unstably positioned oil compartment may tip over resulting in serious injuries and damage 6 Lift the oil compartment by hooking up the on load tap changer head and remove the blocking device on the coupling of the oil compartment base Figure 103 Blocking pl...

Page 96: ...selector with one another The correct position of the two coupling parts is shown in the adjustment plans in the appen dix 9 Screw tap selector onto oil compartment Figure 104 Tap selector with oil compartment Securing tap selector on oil compartment of the on load tap changer VRG 1 CAUTION Place the tap selector on a level surface and secure it against tipping An unstably positioned tap selector ...

Page 97: ...brik Reinhausen GmbH 2015 97 4349315 00 EN VACUTAP VR 2 Remove plastic bag with fastening materials from the tap selector and lay out Figure 105 Plastic bag with fastening materials 3 Remove the ring nuts from the tap selector Figure 106 Ring nut ...

Page 98: ...ing must no longer be turned Figure 107 Blocking strip 5 CAUTION Place the oil compartment on a level surface and secure it against tipping An unstably positioned oil compartment may tip over resulting in serious injuries and damage 6 Lift the oil compartment by hooking up the on load tap changer head and remove the blocking device on the coupling of the oil compartment base Figure 108 Blocking pl...

Page 99: ...n the adjustment plans in the appen dix 9 Screw tap selector onto oil compartment Figure 109 Tap selector with oil compartment Connecting tap selector take off leads Proceed as follows to connect the tap selector take off leads 1 NOTICE Screw tap selector take off lead to connecting piece with care Comply with specified tightening torque and secure screw connection Failure to do so may result in d...

Page 100: ...p changer reaches its final installation height and only has to be raised a maximum of 5 to 20 mm after fitting the bell type tank If this is not done once the tap winding and on load tap changer take off lead are connected tension may occur which will damage the on load tap changer and transformer There is also a risk of malfunctions from se lector contacts closing incorrectly Figure 111 On load ...

Page 101: ... connecting leads without warping or deforming If necessary use an expansion loop for connecting leads Fit screening caps provided to screw connections The tap winding and on load tap changer take off lead must be connected in accordance with the connection diagram included with the delivery Tap selector connection contacts VRC VRE The selector connection contacts are indicated on the selector bar...

Page 102: ...s for multiple coarse change over selector VRC In the case of multiple coarse change over selectors special attention must be paid when routing the cables for connecting the tap selector connection contacts and the multiple coarse change over selector connection contacts These cables should be as far away as possible from neighboring connec tion contacts Tap selector connection contacts that face ...

Page 103: ... be insulated Change over selector connection contacts for reversing change over selector connection VRC VRE The and change over selector connection contacts are designed as connecting lugs with through holes for M10 screws for reversing change over selector connection Connection contact K is designed as an extended fine tap selector connec tion contact also with through hole for M10 screws Figure...

Page 104: ...ange over selector s moving parts block the change over selector and therefore result in on load tap changer damage Connection 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 117 Change over selector connection contacts for reversing change over se lector connection top view ...

Page 105: ...pearance is identical to the fine tap selector contacts through hole for M10 screws always in verti cal position Figure 118 Change over selector connection contacts for coarse tap selector con nection NOTICE Damage to the on load tap changer Connection leads situated too close to the change over selector s moving parts block the change over selector and therefore result in on load tap changer dama...

Page 106: ...P VR Figure 119 Change over selector connection contacts for coarse tap selector con nection top view Selector connection contacts VRD VRF The selector connection contacts have a through hole for M12 screws The screening caps are supplied separately Figure 120 Selector connection contacts 6 3 5 ...

Page 107: ...on contacts for reversing change over se lector connection Change over selector connection contacts for coarse tap selector connection VRD VRF For coarse tap selector connection the 0 and change over selector connection contacts are designed like the fine tap selector connection con tacts The change over selector connection contacts are produced as ter minal lugs of the crimped connecting lead K w...

Page 108: ...nnection point must be covered by a screening cap The screening caps are designed for lateral connection with a straight cable shoe or for front connection with an angled cable shoe Figure 123 Fine tap selector connection contacts and change over selector connec tion contacts Each screening cap is attached with a steel angle piece and 2 screws The connection is secured by centre punching at the pe...

Page 109: ...ere are through holes 13 mm in diameter at three points on the oil com partment s connecting ring 1 Connect the on load tap changer take off lead to the connecting ring of the oil compartment 2 Secure screw connection Figure 125 On load tap changer take off lead Carrying out the transformer ratio test We recommend carrying out a transformer ratio test before the transformer is dried The following ...

Page 110: ... the on load tap changer is to be dried with kerosene in the trans former tank After drying the diverter switch insert must be removed the kerosene drain plug in the oil compartment closed and the diverter switch insert refitted In order to run the transformer ratio test we recommend using the TAPMOTION TD test drive The precise process is described in the test drive operating instructions Carryin...

Page 111: ...hanger heads to one another by the horizontal drive shaft part 1 NOTICE Only move on load tap changer into the desired operating po sition 8 25 revolutions via drive shaft of the upper gear unit When us ing a drill do not exceed a maximum speed of 250 rpm The diverter switch operation can be heard distinctly 2 NOTICE After operating the diverter switch continue to crank 2 5 revo lutions in the sam...

Page 112: ...e dried with kerosene in the trans former tank After drying the diverter switch insert must be removed the kerosene drain plug in the oil compartment closed and the diverter switch insert refitted Measuring DC resistance on transformer Note the measurement scenarios listed below and the associated maximum measured currents when measuring DC resistance on the transformer The measured DC current is ...

Page 113: ... in the autoclave you must remove the on load tap changer head cover and on load tap changer accessories 1 NOTICE Remove the on load tap changer head cover 24 screws M10 wrench size 17 with safety elements and store it outside the autoclave If this is not done the on load tap changer head cover may be dam aged 2 NOTICE Remove on load tap changer accessories and store outside autoclave motor drive ...

Page 114: ...ver may be damaged 3 NOTICE Remove on load tap changer accessories motor drive unit drive shaft protective relay pressure monitoring device pressure relief device bevel gear temperature sensor oil filter unit and store outside autoclave If this is not done the on load tap changer accessories may be damaged Vapor phase drying in the autoclave 1 Supply kerosene vapor at a temperature of around 90 C ...

Page 115: ...relief device pressure operated relays before remov ing the on load tap changer head cover Do not operate any electric devices during the work for example risk of sparks caused by impact wrench Only use conductive and grounded hoses pipes and pump equipment that are approved for flammable liquids NOTICE Damage to the on load tap changer and transformer Small parts in the oil compartment may block ...

Page 116: ...cover and on load tap changer head are in sound condition when removing and during all other work Ensure that o ring is in sound condition also Damaged seal ing surfaces result in oil escaping and therefore on load tap changer and transformer damage Figure 131 On load tap changer head cover 4 NOTICE Do not expose the open oil compartment to ambient humidity for more than 10 hours If you do this ma...

Page 117: ... off the shaft end and remove the tap position indica tor disc Figure 132 Tap position indicator disk Removing tap position indicator from multiple coarse change over selector with more than 35 operating positions 1 Ensure that the red marks on the panel tap position indicator disk and cover disk produce a continuous red line 2 Remove countersunk head screw Figure 133 Countersunk head screw 6 7 2 ...

Page 118: ...r disk off underlying disk with flat screwdriver and pull out po sition indication disk from between panel and bracket Figure 134 Cover disk and position indication disk 4 Remove hexagon screws and associated lock tab Figure 135 Lock tab 5 Pull panel and bracket up and off indicator drive shaft Figure 136 Panel ...

Page 119: ...ry control without due care may dam age it thereby resulting in damage to the on load tap changer and trans former Remove tap change supervisory control with care in order not to dam age or rip out the connecting leads 1 Take tap change supervisory control plug connector out of bracket and disconnect Figure 137 Plug connector 2 Remove nuts and locking elements 3 or 4 depending on model on the moun...

Page 120: ...5 00 EN VACUTAP VR 3 Remove the tap change supervisory control together with the mounting plate and drive shaft Figure 139 Tap change supervisory control with mounting plate and drive shaft 4 Remove nut and Teflon strip from stud bolt Figure 140 Stud bolt with Teflon strip and nut ...

Page 121: ...AP VR Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 141 Cable tie 2 Pull oil suction pipe out of on load tap changer head Figure 142 Oil suction pipe Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 143 Cable tie 6 7 5 6 7 6 ...

Page 122: ...ipe out of on load tap changer head Figure 144 Oil suction pipe 3 Swivel lead of tap change supervisory control out of on load tap chang er head in direction indicated by arrow until the cable will not be dam aged when the diverter switch insert is pulled out Figure 145 Swiveling out tap change supervisory control lead ...

Page 123: ... Lifting on load tap changer head off supporting flange 1 Remove nuts and safety elements between on load tap changer head and supporting flange Figure 146 On load tap changer head with nuts 2 Lift off the on load tap changer head from the supporting flange Figure 147 On load tap changer head 6 7 7 ...

Page 124: ...on load tap changer head with on load tap changer The following chapters explain how to attach the bell type tank and connect the on load tap changer head with the on load tap changer Mounting the bell type tank 1 Clean sealing surface of supporting flange place o ring on supporting flange Figure 148 Supporting flange with o ring 6 8 6 8 1 ...

Page 125: ...6 Assembly Bell type tank design Maschinenfabrik Reinhausen GmbH 2015 125 4349315 00 EN VACUTAP VR 2 Lift the bell type tank over the active part of the transformer Figure 149 Bell type tank ...

Page 126: ...126 4349315 00 EN VACUTAP VR Mounting on load 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 150 Mounting flange with gasket 1 Gasket 2 Mounting flange 6 8 2 ...

Page 127: ...flange and on load tap changer head match up Note fitted bolt on supporting flange Figure 151 Markings and fitted bolt Connecting on load tap changer head and on load tap changer 1 NOTICE Carefully insert lifting device into the on load tap changer head with claws turned in Always lift the on load tap changer using the specified lifting device If the connection screws from the supporting 6 8 3 ...

Page 128: ...her Figure 152 Lifting device 2 NOTICE Swing claws of lifting device outwards use lifting device to lift on load tap changer Make sure that the triangle markings on the sup porting flange and on load tap changer head match up so that all sup porting flange stud bolts go easily through the mounting holes of the on load tap changer head Inaccurate alignment of on load tap changer head to supporting ...

Page 129: ...ng plate of the tap change supervisory control as well as the bolts for the mounting bracket of the oil suction pipe if pres ent free 3 Screw on load tap changer head down to underlying supporting flange with nuts and safety elements Figure 154 Screwing the on load tap changer head onto the supporting flange 4 Now remove the lifting device with the claws turned in Figure 155 Removing lifting devic...

Page 130: ...rting oil suction pipe NOTICE Damage to the on load tap changer Damage to the on load tap changer and oil suction pipe due to incorrect or der of installation Strictly adhere to the order of installation Make sure to always install the diverter switch insert before inserting the oil suction pipe into the oil compartment 1 Insert the oil suction pipe into the on load tap changer head Figure 157 Ins...

Page 131: ...ACUTAP VR 2 Fasten oil suction pipe on retaining bracket with cable tie Figure 158 Fastening the oil suction pipe Inserting tap change supervisory control if present 1 Insert tap change supervisory control with mounting plate and drive shaft Figure 159 Mounting plate with drive shaft 6 8 5 ...

Page 132: ...EN VACUTAP VR 2 Check that drive shaft feather key is seated correctly in groove Figure 160 Feather key and groove 3 Secure mounting plate 3 or 4 nuts and locking elements depending on model Figure 161 Mounting plate 4 Connect plug connector outside its bracket Figure 162 Plug connector ...

Page 133: ...bracket Figure 163 Plug connector in bracket 6 Attach Teflon strip with nut onto stud bolts Figure 164 Stud bolt with Teflon strip and nut Inserting the tap position indicator without multiple coarse change over selector Due to the coupling pin the tap position indicator disc can only be installed when in the correct position 6 8 6 ...

Page 134: ...cator drive shaft slide spring clip on to shaft end Figure 165 Tap position indicator disk Inserting tap position indicator with multiple coarse change over selector with more than 35 operating positions 1 Place panel with bracket on indicator drive shaft and fasten with hexa gon screws and associated lock tab Figure 166 Fitting panel 6 8 7 ...

Page 135: ... Inserting position indication disk 3 Secure cover disk with countersunk head screw The countersunk head screw must be suitable for center punching Figure 168 Fastening cover disk 4 Secure countersunk head screw by center punching Securing on load tap changer head cover 1 NOTICE Place the on load tap changer head cover on the on load tap changer head and take care not to damage the o ring inserted...

Page 136: ...er with o ring 2 Screw on load tap changer head cover using screws and safety ele ments Figure 170 On load tap changer head cover Drying on load tap changer in transformer tank Dry on load tap changer using the following instructions to ensure the dielec tric values assured by MR on the on load tap changer If you want to dry the on load tap changer in the transformer tank first com plete transform...

Page 137: ...Figure 171 Connecting lead 2 Seal off unused pipe connections with a suitable blank cover Vacuum drying in the transformer tank 1 Heat up the on load tap changer in air at atmospheric pressure with a temperature increase of about 10 C h to a final temperature of maxi mum 110 C 2 Pre dry the on load tap changer in circulating air at a max temperature of 110 C for a period of 20 hours 3 Vacuum dry o...

Page 138: ...allation Strictly adhere to the order of installation Make sure to always install the diverter switch insert before inserting the oil suction pipe into the oil compartment Removing diverter switch insert Before you can remove the diverter switch insert you have to move the on load tap changer into the adjustment position and remove the on load tap changer head cover tap position indicator and oil ...

Page 139: ...evices during the work for example risk of sparks caused by impact wrench Only use conductive and grounded hoses pipes and pump equipment that are approved for flammable liquids NOTICE Damage to the on load tap changer and transformer Small parts in the oil compartment may block the diverter switch insert thereby damaging the on load tap changer and transformer Take care to avoid parts falling int...

Page 140: ...f you do this may result in damage to the on load tap changer and transformer due to insufficient dielectric strength of the diverter switch oil Removing tap position indicator version without multiple coarse change over selector Pull the spring clip off the shaft end and remove the tap position indica tor disc Figure 175 Tap position indicator disk Removing tap position indicator from multiple co...

Page 141: ...e countersunk head screw Figure 176 Countersunk head screw 3 Lever cover disk off underlying disk with flat screwdriver and pull out po sition indication disk from between panel and bracket Figure 177 Cover disk and position indication disk 4 Remove hexagon screws and associated lock tab Figure 178 Lock tab ...

Page 142: ...NOTICE Damage to the on load tap changer and transformer Removing the tap change supervisory control without due care may dam age it thereby resulting in damage to the on load tap changer and trans former Remove tap change supervisory control with care in order not to dam age or rip out the connecting leads 1 Take tap change supervisory control plug connector out of bracket and disconnect Figure 1...

Page 143: ...VACUTAP VR 2 Remove nuts and locking elements 3 or 4 depending on model on the mounting plate Figure 181 Mounting plate 3 Remove the tap change supervisory control together with the mounting plate and drive shaft Figure 182 Tap change supervisory control with mounting plate and drive shaft ...

Page 144: ...CUTAP VR 4 Remove nut and Teflon strip from stud bolt Figure 183 Stud bolt with Teflon strip and nut Removing the oil suction pipe 1 Remove cable ties from the oil suction pipe Figure 184 Cable tie 2 Pull oil suction pipe out of on load tap changer head Figure 185 Oil suction pipe 6 9 2 1 6 ...

Page 145: ...pe Figure 186 Cable tie 2 Pull oil suction pipe out of on load tap changer head Figure 187 Oil suction pipe 3 Swivel lead of tap change supervisory control out of on load tap chang er head in direction indicated by arrow until the cable will not be dam aged when the diverter switch insert is pulled out Figure 188 Swiveling out tap change supervisory control lead 6 9 2 1 7 ...

Page 146: ...he eyebolts of the coupling tube and position vertically above the diverter switch insert 3 Lift the diverter switch insert slowly and vertically out of oil compartment Figure 190 Diverter switch insert 4 CAUTION Place the diverter switch insert on a level surface and se cure it against tipping An unstably positioned diverter switch insert may tip resulting in injuries and damage 5 NOTICE Neither ...

Page 147: ... drain plug all the way Figure 191 Kerosene drain plug Inserting diverter switch insert After you have inserted the diverter switch insert you have to insert the oil suction pipe and the tap position indicator and attach the on load tap chang er head cover After you have inserted the diverter switch insert you have to insert the oil suction pipe tap change supervisory control and the tap position ...

Page 148: ...design Maschinenfabrik Reinhausen GmbH 2015 148 4349315 00 EN VACUTAP VR Inserting diverter switch insert 1 Check that all six insulating shims are present in the energy accumula tor carrier Figure 192 Insulating shim 6 9 2 3 1 ...

Page 149: ...49 4349315 00 EN VACUTAP VR 2 To fit the diverter switch insert ensure that the tap selector coupling is in the adjustment position Figure 193 Adjustment markings in oil compartment base VACUTAP VRC VRE Figure 194 Adjustment markings in oil compartment base VACUTAP VRD VRF ...

Page 150: ...diverter switch insert s energy accumulator is inter locked the energy accumulator s eccentric disk is at its highest point 4 Attach lifting gear to diverter switch insert and position diverter switch in sert over oil compartment 5 Align diverter switch insert such that the red markings at the top of the energy accumulator and on the on load tap changer head are opposite one another ...

Page 151: ... 00 EN VACUTAP VR 6 Slowly lower diverter switch insert until it meets the oil compartment base Figure 196 Markings 7 Carefully press until energy accumulator carrier is in position The shape of the tap selector coupling ensures that coupling is only possible in the correct position ...

Page 152: ...ween the upper edge of the coupling tube and the on load tap changer head flange Inserting oil suction pipe NOTICE Damage to the on load tap changer Damage to the on load tap changer and oil suction pipe due to incorrect or der of installation Strictly adhere to the order of installation Make sure to always install the diverter switch insert before inserting the oil suction pipe into the oil compa...

Page 153: ...UTAP VR 2 Fasten oil suction pipe on retaining bracket with cable tie Figure 199 Fastening the oil suction pipe Inserting tap change supervisory control if present 1 Insert tap change supervisory control with mounting plate and drive shaft Figure 200 Mounting plate with drive shaft 6 9 2 3 3 ...

Page 154: ...EN VACUTAP VR 2 Check that drive shaft feather key is seated correctly in groove Figure 201 Feather key and groove 3 Secure mounting plate 3 or 4 nuts and locking elements depending on model Figure 202 Mounting plate 4 Connect plug connector outside its bracket Figure 203 Plug connector ...

Page 155: ...acket Figure 204 Plug connector in bracket 6 Attach Teflon strip with nut onto stud bolts Figure 205 Stud bolt with Teflon strip and nut Inserting the tap position indicator without multiple coarse change over selector Due to the coupling pin the tap position indicator disc can only be installed when in the correct position 6 9 2 3 4 ...

Page 156: ...tor drive shaft slide spring clip on to shaft end Figure 206 Tap position indicator disk Inserting tap position indicator with multiple coarse change over selector with more than 35 operating positions 1 Place panel with bracket on indicator drive shaft and fasten with hexa gon screws and associated lock tab Figure 207 Fitting panel 6 9 2 3 5 ...

Page 157: ...nserting position indication disk 3 Secure cover disk with countersunk head screw The countersunk head screw must be suitable for center punching Figure 209 Fastening cover disk 4 Secure countersunk head screw by center punching Securing on load tap changer head cover 1 NOTICE Place the on load tap changer head cover on the on load tap changer head and take care not to damage the o ring inserted i...

Page 158: ...ment resulting in on load tap chang er damage Also ensure that the red triangular marks on the on load tap changer head and the on load tap changer head cover match up Figure 210 On load tap changer head cover with o ring 2 Screw on load tap changer head cover using screws and safety ele ments Figure 211 On load tap changer head cover ...

Page 159: ...erosene vapor at a temperature of around 90 C Keep this temperature constant for 3 to 4 hours 2 Increase the kerosene vapor temperature by approx 10 C hour to the desired final temperature 125 C maximum on the on load tap chang er 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 Closing kerosene drain plug 1 Remo...

Page 160: ...impermissible amount of humid ity is not absorbed from the surroundings When filling the oil compartment and its oil conservator use only new miner al insulating oil for transformers in accordance with IEC 60296 Specification for unused mineral insulating oils for transformers and switchgear 1 Establish a connecting lead between the pipe connection E2 and one of the pipe connections R S or Q to en...

Page 161: ... load tap changer with oil Maschinenfabrik Reinhausen GmbH 2015 161 4349315 00 EN VACUTAP VR 2 Fill on load tap changer with oil using one of the remaining pipe connec tions of the on load tap changer head Figure 214 Pipe connection S and R ...

Page 162: ...visory control if present Connect monitoring contacts integrated in on load tap changer head terminal box on pipe connection Q to corresponding motor drive unit terminals using connecting lead see connection diagram of relevant motor drive unit Installing protective relay in piping and connecting Always perform all transformer tests with the protective relay attached and connected 8 8 1 8 2 ...

Page 163: ...e installing in piping between on load tap changer head and oil conservator 1 Open terminal box Figure 215 Protective relay with open terminal box NOTICE Damage to protective relay Damage to protective relay resulting from improper operation Never press both test buttons at the same time 2 Press OFF test button ð Flap valve is inclined Line marker appears in the middle of the in spection window 8 ...

Page 164: ...otective devices and drive components Maschinenfabrik Reinhausen GmbH 2015 164 4349315 00 EN VACUTAP VR Figure 216 OFF position 3 Press IN SERVICE test button ð Flap valve is vertical Figure 217 In service position ...

Page 165: ...ective relay in piping The following requirements must be satisfied in order to install the protective relay in the piping The pipes from the protective relay to the oil conservator must be routed with an inclination of at least 2 to ensure the switching gases can es cape freely The inner piping diameter must be at least 25 mm The magnetic field strength bushings busbars etc must be 20 kA m Instal...

Page 166: ...AP VR The reference arrow on the terminal box cover must point towards the on load tap changer s oil conservator Install protective relay such that it can be easily accessed for subse quent maintenance work Figure 219 Piping with inclination of at least 2 Figure 220 Protective relay with test button at the top ...

Page 167: ... on load tap changer s oil conser vator 1 Install the protective relay horizontally in the pipe between on load tap changer head and oil conservator as near as possible to the on load tap changer head taking the above points into consideration 2 Provide a stop cock nominal width of at least 25 mm between protec tive relay and oil conservator Figure 222 Stop cock ...

Page 168: ...he standard version as either an NC or NO contact Other contact equipment can be sup plied as special versions and is shown in the dimensional drawing provided 1 Insert cable connection RS 2001 2001 V 2001 H 2001 E 2001 5 2001 R or adapter RS 2003 und RS 2004 in the tapped hole which seems to be in the most favorable position Figure 223 Cable bushing 2 Seal open tapped hole with MR dummy plug Figu...

Page 169: ...8 Fitting protective devices and drive components Maschinenfabrik Reinhausen GmbH 2015 169 4349315 00 EN VACUTAP VR 3 Open terminal box Figure 225 Terminal box ...

Page 170: ...ve devices and drive components Maschinenfabrik Reinhausen GmbH 2015 170 4349315 00 EN VACUTAP VR 4 Loosen screw remove terminal box cover and take off protective cover Figure 226 Terminal box cover and protective cover ...

Page 171: ... or severe injury Danger of death and severe injury due to unprofessional electrical connec tion of protective relay Connect the protective relay into the tripping circuit of the circuit break ers of the transformer to be protected so that the transformer is immedi ately disconnected by the circuit breakers when the protective relay is tripped Systems which only generate an alarm message are not p...

Page 172: ...s and drive components Maschinenfabrik Reinhausen GmbH 2015 172 4349315 00 EN VACUTAP VR 7 Connect protective conductor to cylinder head screw Figure 229 Protective conductor 8 Insert protective cover Figure 230 Protective cover ...

Page 173: ...8 Fitting protective devices and drive components Maschinenfabrik Reinhausen GmbH 2015 173 4349315 00 EN VACUTAP VR 9 Secure terminal box cover Figure 231 Terminal box cover ...

Page 174: ...x cover Installing and connecting the pressure operated relay Checking the function of the pressure operated relay Check the function of the pressure operated relay before you install it on a pipe bend or the on load tap changer head 1 Remove the cover cap 2 Activate the snap action switch ð Sensor is in the OFF position above the snap action switch 8 3 8 3 1 ...

Page 175: ...ents Maschinenfabrik Reinhausen GmbH 2015 175 4349315 00 EN VACUTAP VR Figure 233 OFF position 1 Snap action switch 2 Sensor in OFF position 3 Activate the snap action switch again ð Sensor is in the OPERATION position below the snap action switch ...

Page 176: ...re operated relay The pressure operated relay can be installed in 2 variants Fastening on the on load tap changer head vertical installation Fastening onto a pipe bend horizontal installation It is installed using holes on the mounting ring A mounting seal has to be installed under the pressure operated relay during installation During fastening ensure that the ventilation is on top Ensure that th...

Page 177: ...ted relay into the trip circuit for the circuit breaker of the transformer to be protected such that the circuit breaker de energizes the transformer immediately when the pressure operated relay is tripped Circuits where only an alarm message is generated are not permitted 1 Remove the cover cap 2 Insert a M25x1 5 cable gland Use the tapped hole for routing lines for this 3 Connect the lines to th...

Page 178: ...ot supplied by MR to transformer tank Figure 235 Stud bolt 2 NOTICE Fit the drive vertically to the transformer tank so that its output shaft is correctly aligned with the vertical shaft of the bevel gear If this is not done the drive may be damaged The assembly holes for this purpose are on the outside of the protective housing s mounting straps Figure 236 Fitting drive 8 4 ...

Page 179: ...re drive without warping or deforming If this is not done the drive may be damaged Figure 237 Securing drive 4 Vibration dampers must be used on transformers where the motor drive unit is subject to vibration MR special design 5 Connect the grounding screw of the motor drive unit to the transformer tank Figure 238 Grounding screw ...

Page 180: ...t must align with the shaft end of the upper gear unit on the on load tap changer head Attach bevel gear 264 to support on the transformer cover with 2 bolts through holes 18 mm in diameter The information provided above applies analogously to special design bevel gears and angle gears as well as to intermediate bearings of the vertical or horizontal drive shaft Refer to the information about the ...

Page 181: ...st be exactly aligned Minor axial displacement can be tolerated as long as it does not exceed 35 mm per 1000 mm square tube length that corresponds to 2 Square tubes coupling brackets coupling bolts screws and locking wash ers are corrosion resistant We therefore recommend not applying the same external coating to these parts as to the transformer tank The square tubes and the vertical protective ...

Page 182: ...ION ED WARNING The motor drive unit may be started by accident if the motor protective switch is not tripped Risk of injury from starting the motor drive unit by accident Trip motor protective switch before starting to fit the drive shafts To fit the vertical drive shaft to the drive proceed as follows 1 Grease the coupling bolts coupling brackets and ball heads e g ISO FLEX TOPAS L 32 Figure 240 ...

Page 183: ... GmbH 2015 183 4349315 00 EN VACUTAP VR 2 Determine dimension A between the shaft end of the drive and the shaft end of the bevel gear Shorten square tube to length of A 9 mm Figure 241 Shortening square tube 3 Deburr cut surface of square tube Figure 242 Deburring cut surfaces ...

Page 184: ... screwed together coupling part onto square tube until stop is reached Figure 243 Sliding coupling part onto square tube 5 Insert coupling bolt into lower shaft end Grease coupling parts and cou pling bolts Slide square tube with coupling part on to coupling bolt Figure 244 Sliding square tube with coupling part on to coupling bolt ...

Page 185: ...ng vertical drive shaft on drive 7 Pivot square tube with coupling part Figure 246 Pivoting square tube 8 When installing inner tube of telescopic protective tube if necessary shorten on side without slits The minimum dimension for overlapping the two protective tubes is 100 mm Inner tube must not be deformed and must be deburred in order to slide easily in the outer tube ...

Page 186: ... EN VACUTAP VR Figure 247 Deburring inner tube Dimension A distance be tween the shaft end of the drive and the shaft end of the 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 1599 mm 2009 mm 1150 mm 1150 mm ...

Page 187: ... tube with slot at bottom Slide telescopic protective tubes onto square tube Then slide hose clips over telescopic protective tubes Figure 248 Sliding on telescopic protective tube 10 Place adapter ring over bearing collar of bevel gear and slide upwards Push in coupling bolt Swing square tube in Figure 249 Fitting adapter ring and coupling bolt ...

Page 188: ...g brackets and mount on bevel gear Set a unilateral ax ial clearance of 3 mm between the coupling bolt and upper coupling piece To prepare for alignment tighten screws to approx 6 Nm After aligning on load tap changer to drive see MR operating instructions for TAPMOTION ED tighten screws to 9 Nm Figure 250 Mounting coupling brackets ...

Page 189: ...t top end and at transition to bottom protective tube Figure 251 Mounting protective tube Fitting horizontal drive shaft NOTICE Damage to the on load tap changer Damage to the on load tap changer due to incorrect alignment of the upper gear unit Only align the upper gear unit if the pressure segments are loosened Never turn upper gear unit directly around its own axis to align it Only align the up...

Page 190: ...t end of upper gear unit and shaft end of bevel gear and shorten square tube to length A 9 mm Figure 252 Shortening square tube 2 Calculate inside width B between housings of upper gear unit and bevel gear Cut guard plate LSB length of guard plate accordingly and de burr the cutting surface Protect guard plate against corrosion with a coat of paint Figure 253 Shortening deburring and coating guard...

Page 191: ...EN VACUTAP VR 3 Slide loosely screwed together coupling part onto square tube until stop is reached Figure 254 Sliding coupling part onto square tube 4 Grease coupling bolt Fit coupling bolt onto bevel gear and slide square tube with coupling part over it Figure 255 Attaching coupling part to bevel gear ...

Page 192: ...49315 00 EN VACUTAP VR 5 Mount horizontal drive shaft on bevel gear Figure 256 Mounting horizontal drive shaft on bevel gear 6 Grease coupling bolts and coupling brackets for upper gear unit Mount coupling brackets on upper gear unit Figure 257 Mounting horizontal drive shaft on upper gear unit ...

Page 193: ... 00 EN VACUTAP VR 7 Now attach shortened guard plate to housing lugs on the on load tap changer head and bevel gear Secure each end of guard plate with a hose clip Figure 258 Fitting guard plate 8 If using a bearing bracket or angle gear attach caps to the guard plate Figure 259 Bearing bracket caps ...

Page 194: ...Reinhausen GmbH 2015 194 4349315 00 EN VACUTAP VR Figure 260 Angle gear caps Fitting drive shaft with cardan joints NOTICE Damage to drive shaft Damage to expansion bellows from bending cardan joint Ensure a matching position of the opposing cardan joint straps 8 6 3 ...

Page 195: ...tion of the drive shaft with cardan joints is mainly designed as a verti cal drive shaft between motor drive unit and bevel gear Technically a hori zontal design is also possible Note however that when using the horizontal design the guard plate supplied has to be adapted accordingly Figure 261 Drive shaft with cardan joint ...

Page 196: ... Reinhausen GmbH 2015 196 4349315 00 EN VACUTAP VR To fit the drive shaft with cardan joints proceed as follows 1 Grease the coupling bolts coupling brackets and ball heads e g ISO FLEX TOPAS L 32 Figure 262 Grease the coupling bolts coupling brackets and ball heads ...

Page 197: ...other to set the corresponding angle Figure 263 Inserting adapter in pivotable protective tubes 3 When supplied the cardan joints are fitted with coupling bolts To mount on the shaft end the following steps must be taken 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 expan...

Page 198: ...oint bolt Figure 265 Fitting cardan joint to ball shaped head of motor drive unit 5 Fit second longer cardan joint to bevel gear If a cardan joint is attached to the upper gear unit then use a cardan joint with an inner hub diameter of 25 mm Figure 266 Fitting second cardan joint on bevel gear 6 Secure cardan shaft bolt to expansion bellows with hose clip Figure 267 Securing cardan shaft bolt with...

Page 199: ...devices and drive components Maschinenfabrik Reinhausen GmbH 2015 199 4349315 00 EN VACUTAP VR 7 Provisionally connect loose shaft ends of the joints to an angle bar and align Figure 268 Connecting shaft ends with angle bar ...

Page 200: ...ponents Maschinenfabrik Reinhausen GmbH 2015 200 4349315 00 EN VACUTAP VR 8 Determine dimension A between the shaft ends Cut square tube to LR A 106 mm LR length of square tube Deburr cut surface of square tube Figure 269 Shortening square tube ...

Page 201: ...TAP VR 9 Before mounting shorten both telescopic tubes to dimension A 2 120 mm A dimension between both cardan joint ends and de burr Figure 270 Shortening telescopic tubes 10 Fit one adapter to bearing collar of motor drive unit and fit other adapter to bearing collar of bevel gear Figure 271 Fitting adapters ...

Page 202: ...R 11 Slide previously shortened and deburred square tube over upper cardan joint end until stop is reached Figure 272 Sliding square tube over upper cardan joint end 12 Thread upper flexible protective tube with long outlet up onto square tube from below Figure 273 Sliding flexible protective tube over square tube ...

Page 203: ...15 203 4349315 00 EN VACUTAP VR 13 Thread on outer and inner tubes such that the slotted sides of the outer and inner tube are both facing down Figure 274 Sliding on telescopic tubes 14 Slide everything up and secure with a screw clamp Figure 275 Securing everything with a screw clamp ...

Page 204: ... Maschinenfabrik Reinhausen GmbH 2015 204 4349315 00 EN VACUTAP VR 15 Slide bottom flexible protective tube also with long outlet up on to the square tube and secure with screw clamp Figure 276 Sliding bottom flexible protective tube onto square tube ...

Page 205: ...e 277 Swinging square tube in 17 Tighten bottom coupling brackets Shaft end and coupling part must be securely connected such that no axial clearance remains between the coupling bolt and coupling bracket To prepare for alignment tighten screws to approx 6 Nm After aligning on load tap changer to drive see MR operating instructions for TAPMOTION ED tighten screws to 9 Nm ...

Page 206: ... 3 mm axial clearance Figure 279 Fitting upper coupling brackets 19 Working from top to bottom mount the individual parts of the shaft pro tection Set angle position 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 ...

Page 207: ...scopic pipe into upper and lower pivotable protec tive tubes by the width of the adapter before tightening the hose clips Figure 280 Securing telescopic pipes and flexible protective tubes with hose clips Fitting drive shaft with insulator A model with insulator in the vertical drive shaft is available for insulating in stallation of the drive shaft Figure 281 Model with insulator maximum permissi...

Page 208: ...n shaft Figure 282 Model with insulator maximum permissible offset 20 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 TAPMOTION ED Installing electrics for motor drive unit Install electrics for motor drive unit as described in relevant MR operating in structions TAPMOTION ED 8 7 8 8 ...

Page 209: ...ning the on load tap changer head and the suction pipe on pipe connection S must be bled Bleeding on load tap changer head 1 Open all forward and return valves in the pipe system 2 Remove screw cap on air vent valve E1 on the on load tap changer head cover Figure 283 Screw cap 3 Use screwdriver to lift valve tappet on air vent valve E1 and bleed on load tap changer head Figure 284 Valve tappet 4 S...

Page 210: ...uction pipe on pipe connection S 1 Remove screw cap from pipe connection S Figure 285 Screw cap 2 Open vent screw and bleed piping 3 Close vent screw 4 Seal vent screw with screw cap Grounding the on load tap changer 1 Connect the grounding screw on the on load tap changer head to the transformer cover Figure 286 Head grounding screw 9 1 2 9 2 ...

Page 211: ...lear Performing function tests Perform function checks as described in relevant MR operating instructions TAPMOTION ED Dielectric tests on transformer wiring Note the following points for dielectric tests on the transformer wiring The motor drive unit is put through dielectric tests before delivery Before the dielectric test for the transformer wiring disconnect drive from the section to be tested...

Page 212: ... injury Danger of death or severe injury from explosive gases under the on load tap changer head cover in the pipework system in the oil conservator at the dehydrating breather opening and from flying parts and hot oil splash ing Ensure that there are no naked flames hot surfaces or sparks for ex ample caused by static charging in the immediate surroundings and that none occur Ensure that the oil ...

Page 213: ...event damage from overvoltage When connecting the motor drive unit s supply voltage only use the holes in the protective housing base intended for lead insertion Guide all ground connecting leads to one central connection point es tablishment of suitable reference earth Disconnect all electronic components before the high voltage test Be fore a wiring dielectric test remove all devices with a with...

Page 214: ...ed as fol lows 1 Ensure that the drive and the on load tap changer de energized tap changer are in the adjustment position 2 Remove the drive 3 Do not actuate the drive while the on load tap changer de energized tap changer is not coupled and do not turn the output shaft 4 Do not actuate an on load tap changer de energized tap changer which is not coupled and do not turn its drive shaft 5 Transpor...

Page 215: ...lso sufficient Transport without oil fill 1 NOTICE Completely empty the oil compartment of the on load tap changer if the transformer is completely emptied of oil If this is not done the oil compartment may be damaged 2 Preserve the interior of the oil compartment in the same way as the transformer for example by filling with N2 For longer immobilization periods you must connect and operate the mo...

Page 216: ...ce 2 If the stop cock slide valve between the oil conservator and oil com partment is open open the air vent valve E1 on the on load tap changer head 3 Drain off the gas from under the on load tap changer cover Ensure suf ficient fresh air for example in transformer cells and work tents 4 Once the gas has been drained off and the oil is flowing out of the air vent valve close this valve and close ...

Page 217: ...ioning exceeds 8 weeks or opera tion is interrupted for longer than 2 weeks the heater must be connect ed and turned on to prevent the condensation of moisture inside the protective housing If this is not possible e g during transportation place a sufficient amount of dehydrating agent in the protective hous ing NOTICE Damage to the on load tap changer and motor drive unit Damage to on load tap ch...

Page 218: ... that the transformer s circuit breaker cannot be closed ð Passive protection test 8 Press IN SERVICE test button 9 Leave the transformer s danger zone 10 Close the transformer s circuit breaker with isolating switches open and the transformer grounded on all sides 11 Press OFF test button 12 Ensure that the transformer s circuit breaker is open ð Active protection test 13 Press IN SERVICE test bu...

Page 219: ...he sensor on the snap action switch ð Sensor is in the OPERATION position 9 Leave the transformer s danger zone 10 Close the transformer s circuit breaker with isolating switches open and the transformer grounded on all sides 11 Activate the sensor on the snap action switch ð Sensor is in the OFF position 12 Ensure that the transformer s circuit breaker is open ð Active protection test 13 Activate...

Page 220: ...tor must be completely immersed in transformer oil and the oil com partment completely filled with oil The on load tap changer can be operated in the temperature range of the surrounding transformer oil of between 25 and 105 C and with overload up to 115 C in accordance with IEC 60214 1 1 Establish a connecting lead between the pipe connection E2 and one of the pipe connections R S or Q to ensure ...

Page 221: ...er content at a diverter switch oil temperature of 20 C 5 C The dielectric strength and water content must comply with the limit values provided in the appendix 231 6 Bleed the on load tap changer 7 Carry out tap change operation tests Commissioning the transformer 1 Loop the signaling contact for falling below the minimum oil level in the on load tap changer s oil conservator into the tripping ci...

Page 222: ... usually a multiple of the transformer rated current and can overload the on load tap changer during the diverter switch operation ð After the transformer has been switched on and the inrush current im pulse has subsided on load tap changer tap change operations can be performed both under no load and load conditions During all function checks and tests when commissioning in addition to the safety...

Page 223: ...on the on load tap changer and transformer The transformer must not be energized without first undertaking checks Check on load tap changer and transformer 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 The table below is intended to assist with detecting and where po...

Page 224: ...cates that the oil has fallen below the minimum oil level in the on load tap changer oil conservator Check pipework system pipes etc and on load tap changer head for leaks Check oil level and oil quali ty of diverter switch oil in accordance with operating instructions for on load tap changer If the oil falls below the limit values also contact MR On load tap changer not changing tap position slug...

Page 225: ...tective relay proceed as follows 1 Establish time of tripping 2 Determine operating position of on load tap changer 3 As a precaution block the motor drive unit by tripping the motor protec tive switch to prevent the on load tap changer being actuated by remote control 4 Check on load tap changer head cover If oil is leaking shut the oil con servator stop valve immediately 5 Check whether the flap...

Page 226: ...been established and remedied you can re commission the transformer 1 Ensure that the flap valve is in the IN SERVICE position 2 Commission the transformer Tripping the pressure operated relay and putting the transformer back into operation WARNING Risk of severe injury or death Risk of severe injury or death if on load tap changer and transformer are in sufficiently tested Check the on load tap c...

Page 227: ... corre sponding on load tap changer operating instructions 3 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 operat...

Page 228: ...ypes when tripping oil temperature 20 C 0 65 m s 1 20 m s 3 00 m s 4 80 m s Table 11 General technical data Tripping circuit The protective relay can be supplied with either a normally open NO or a normally closed NC dry reed magnetic switch see dimensional drawing supplied Other contact combinations are available as special design 229 Electrical data for normally open NO or normally closed NC dry...

Page 229: ...ng capacity DC switching capacity 1 2 VA 200 VA 1 2 W 130 W Maximum admissible voltage AC DC Minimum admissible voltage AC DC 250 V 24 V Maximum switched current AC DC Minimum switched current AC DC 1 A 4 8 mA at 250 V Power frequency withstand voltage test Between all voltage carrying con nections and the grounded parts at least 2500 V 50 Hz test duration 1 minute Between open contacts at least 1...

Page 230: ...2 kg Equipment For standard insulating fluids IEC60296 and IEC60422 and alternative insulating fluids Sealing material oil air VITON Permitted pressure range absolute pressure 1 bar 6 bar vacuum not permitted Upper switching pressure 3 8 0 2 bar trip pressure Lower switching pressure 2 8 0 2 bar Snap action switch Connection terminals Line connection 1 or 2 lines per terminal Ø 0 75 2 5 mm Contact...

Page 231: ...ngth measured in accordance with IEC 60156 and water content measured in accordance with IEC 60814 of the on load tap changer oil for VACUTAP on load tap changers The values have been established on the basis of IEC 60422 Ud H2O When commissioning the transform er 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 15 Limit values...

Page 232: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 232 4349315 00 EN VACUTAP VR VACUTAP VRC VRE installation drawing 899992 14 2 ...

Page 233: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 233 4349315 00 EN VACUTAP VR VACUTAP VRD VRF installation drawing 899898 14 3 ...

Page 234: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 234 4349315 00 EN VACUTAP VR VACUTAP VRG installation drawing 899945 14 4 ...

Page 235: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 235 4349315 00 EN VACUTAP VR VACUTAP VRC VRE installation position of selector connection contacts 727042 14 5 ...

Page 236: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 236 4349315 00 EN VACUTAP VR VACUTAP VRD VRF VRG fine tap selector connection contact and change over selector connection contact 899941 14 6 ...

Page 237: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 237 4349315 00 EN VACUTAP VR VACUTAP VRF bridges to parallel connection of tap selector connection contacts 786919 14 7 ...

Page 238: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 238 4349315 00 EN VACUTAP VR VACUTAP VRG bridges to parallel connection of tap selector connection contacts 786920 14 8 ...

Page 239: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 239 4349315 00 EN VACUTAP VR VACUTAP VR special design for bell type tank installation 720781 14 9 ...

Page 240: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 240 4349315 00 EN VACUTAP VR VACUTAP VR lifting device for bell type tank installation 720845 14 10 ...

Page 241: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 241 4349315 00 EN VACUTAP VR VACUTAP VR on load tap changer head 720847 14 11 ...

Page 242: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 242 4349315 00 EN VACUTAP VR VACUTAP VR on load tap changer head with flange for pressure relief device 899946 14 12 ...

Page 243: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 243 4349315 00 EN VACUTAP VR VACUTAP VR pipe connection Q with connecting terminals of tap change supervisory control 899648 14 13 ...

Page 244: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 244 4349315 00 EN VACUTAP VR VACUTAP VR adjustment positions 728557 14 14 ...

Page 245: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 245 4349315 00 EN VACUTAP VR VACUTAP VRC VRE adjustment plan without change over selector 719853 14 15 ...

Page 246: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 246 4349315 00 EN VACUTAP VR ...

Page 247: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 247 4349315 00 EN VACUTAP VR VACUTAP VRD VRF adjustment plan without change over selector 721089 14 16 ...

Page 248: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 248 4349315 00 EN VACUTAP VR ...

Page 249: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 249 4349315 00 EN VACUTAP VR VACUTAP VRC III VRC II VRE III adjustment plan with reversing change over selector connection 719850 14 17 ...

Page 250: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 250 4349315 00 EN VACUTAP VR VACUTAP VRC I VRE I adjustment plan with reversing change over selector connection 719851 14 18 ...

Page 251: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 251 4349315 00 EN VACUTAP VR VACUTAP VRD VRF adjustment plan with reversing change over selector connection 721092 14 19 ...

Page 252: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 252 4349315 00 EN VACUTAP VR VACUTAP VRG adjustment plan with reversing change over selector connection 727074 14 20 ...

Page 253: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 253 4349315 00 EN VACUTAP VR VACUTAP VRC VRE adjustment plan with coarse tap selector connection 719852 14 21 ...

Page 254: ... Maschinenfabrik Reinhausen GmbH 2015 254 4349315 00 EN VACUTAP VR VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 10 2 5 coarse tap connections 731412 14 22 ...

Page 255: ... Maschinenfabrik Reinhausen GmbH 2015 255 4349315 00 EN VACUTAP VR VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 12 2 5 coarse tap connections 731411 14 23 ...

Page 256: ... Maschinenfabrik Reinhausen GmbH 2015 256 4349315 00 EN VACUTAP VR VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 14 2 5 coarse tap connections 731410 14 24 ...

Page 257: ... Maschinenfabrik Reinhausen GmbH 2015 257 4349315 00 EN VACUTAP VR VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 16 2 5 coarse tap connections 731000 14 25 ...

Page 258: ... Maschinenfabrik Reinhausen GmbH 2015 258 4349315 00 EN VACUTAP VR VACUTAP VRC adjustment plan with multiple coarse change over selector for change over selector division 18 2 5 coarse tap connections 730977 14 26 ...

Page 259: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 259 4349315 00 EN VACUTAP VR VACUTAP VRD VRF adjustment plan with coarse tap selector connection 721091 14 27 ...

Page 260: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 260 4349315 00 EN VACUTAP VR VACUTAP VRG adjustment plan with coarse tap selector connection 727075 14 28 ...

Page 261: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 261 4349315 00 EN VACUTAP VR Tracing template for on load tap changer head 890183 14 29 ...

Page 262: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 262 4349315 00 EN VACUTAP VR Socket wrench for kerosene drain plug 723015 14 30 ...

Page 263: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 263 4349315 00 EN VACUTAP VR Screw tools for installation and maintenance 723016 14 31 ...

Page 264: ...14 Appendix Maschinenfabrik Reinhausen GmbH 2015 264 4349315 00 EN VACUTAP VR Bevel gear CD 6400 dimensional drawing 892916 14 32 ...

Page 265: ...ge Over contact DC Direct current Dielectric strength Material specific property of isolators kV 2 5 mm maximum electrical field strength without a breakdown arc IEC International Electrotechnical Commission IP Ingress protection MR Maschinenfabrik Reinhausen GmbH NC Normally Closed contact NO Normally Open contact ...

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MR VACUTAP VR, Installation And Commissioning Instructions

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