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Table of contents Table of contents 1 Introduction......................................................................................................................... 3 2 Step-by-Step..................................................................................................

Table of contents Table of contents 1 Introduction......................................................................................................................... 3 2 Step-by-Step....................................................................................................................... 4 2.1 Tests and condition-based parts replacement at each maintenance................................................. 4 2.1.1 Inspection of the parallelogram............................................................................................................................. 4 2.1.2 Maintenance Guideline Reactor Type OLTC RMV-II_en...................................................................................... 6 2.1.3 Replacement intervals for OLTC components.................................................................................................... 38 2.2 Parts replacement after fixed number of tap-change operations intervals....................................... 39 2.3 One-time retrofit and modifications................................................................................................... 39 2.3.1 Replacement criteria of the helical gear and Geneva wheel............................................................................... 39 2.3.2 From 2019-09-01 to 2020-02-28 - Replacement of two bolts at the P connection.............................................. 40 3 Assemblies........................................................................................................................ 42 3.1 General............................................................................................................................................. 42 3.1.1 CI700602 Testing for crossed preventative autotransformer connections.......................................................... 42 3.1.2 Crossed PA Lead Test RMV-II_MD-III................................................................................................................ 43 3.1.3 Instructions Manual Hi-Pot Test Set (8993C81H24_Rev2)................................................................................. 45 3.1.4 Instructions on how to replace the fiber optic cables.......................................................................................... 46 3.1.5 Main Tank Door Torquing................................................................................................................................... 53 3.1.6 MESSKO Oil Gage Body Replacement.............................................................................................................. 55 3.1.7 Neutral position RMV.......................................................................................................................................... 60 3.1.8 Oszilogram_wiring_4D48011.............................................................................................................................. 69 3.1.9 Replacing position indication decal..................................................................................................................... 71 3.1.10 Reverse Polarity Test on RMV-II......................................................................................................................... 71 3.1.11 RF702100 UVT-LTX Crossed Leads Test.......................................................................................................... 72 3.1.12 RMV Switching Sequence_km_Dec2011........................................................................................................... 75 3.1.13 RMV-II LTC Commissioning.............................................................................................................................. 105 3.1.14 RMV-II LTC Inspection...................................................................................................................................... 107 3.1.15 RS602701 RMV-II 1500-15 Selector Installation.............................................................................................. 110 3.1.16 Timing Wheel Max............................................................................................................................................ 111 3.1.17 Torque on Selector Board 69kv Boards............................................................................................................ 113 3.1.18 Torque Values 15-25kV Boards........................................................................................................................ 115 3.1.19 Warning Decals for RMV LTC's........................................................................................................................ 117 3.1.20 Replacement intervals for OLTC components.................................................................................................. 126 3.1.21 From 2019-09-01 to 2020-02-28 - Replacement of two bolts at the P connection............................................ 126 EN 1  Table of contents 3.2 Instructions Manual Operational Trip Tester (8993C81H23_Rev2)................................................ 129 3.3 Contact system, switching element................................................................................................ 130 3.3.1 Inspection of the parallelogram......................................................................................................................... 130 3.4 Energy accumulator, gearbox......................................................................................................... 132 3.5 Transition impedance and protective circuit................................................................................... 132 3.6 Drive............................................................................................................................................... 132 3.6.1 Adjust Handcrank Hub...................................................................................................................................... 132 3.6.2 CAM SWITCH SEQ CHART 1733-32 (4D43156) REV8.................................................................................. 133 3.6.3 CI7004 RMV Mechanical Interlock Option 1..................................................................................................... 135 3.6.4 CI700501 RMV Mechanical Interlock Option 2................................................................................................. 140 3.6.5 Programming Incon 1250 Remote Receiver, CI700703.................................................................................. 142 3.6.6 CI701900 RMV Motor Change Procedure........................................................................................................ 144 3.6.7 CI702000 FUNCTION OF CAM SWITCHES FOR RMV TYPE LTC................................................................ 150 3.6.8 Correct the position indication dial.................................................................................................................... 152 3.6.9 How to Install a Position Indicator Sticker......................................................................................................... 155 3.6.10 INCON 1292KS REPLACEMENT..................................................................................................................... 158 3.6.11 Instruction on how to install a drum switch........................................................................................................ 159 3.6.12 Instructions to install 1 deck drum switch.......................................................................................................... 161 3.6.13 MESSKO Pos Ind Assy..................................................................................................................................... 166 3.6.14 Motor Drive Cycle.............................................................................................................................................. 169 3.6.15 Motor info for RMV Load Tap Changers R3...................................................................................................... 170 3.6.16 Replace 88 relay............................................................................................................................................... 171 3.6.17 Replacement of Drive Boss............................................................................................................................... 174 3.6.18 Adjustment to Drag Hands................................................................................................................................ 176 3.6.19 Replacement criteria of the helical gear and Geneva wheel............................................................................. 181 3.7 Monitoring....................................................................................................................................... 182 3.7.1 CI700602 Testing for crossed preventative autotransformer connections........................................................ 182 3.7.2 Pre May 2010 - RMV Monitoring Systems Models A & B, CI701704............................................................... 183 3.7.3 Post May 2010 - RMV Monitoring System Model B, CI701705........................................................................ 186 3.7.4 S012804R1 VIM Wiring Mod Procedure........................................................................................................... 189 3.7.5 S050708R4 Supp App Info Model 'B' VIM 33 steps.......................................................................................... 191 3.7.6 VIM System Voltage Checks S011609R2......................................................................................................... 192 2 EN 1 Introduction 1 Introduction NOTICE Risk of personal damage or injury, damage to property or mal- function. If work is performed by insufficiently qualified personnel and/or safety in- structions are not observed, there is a risk of personal damage or injury, damage to property or malfunction. ► Safety, hazard and other information included in the MR operating in- structions for the relevant on-load tap-changer type must be observed! ► Please read the instructions carefully before starting work. ► The realization of the instructions below requires profound knowledge and experience that correspond to the knowledge acquired during a train- ing at MR about maintenance of the relevant on-load tap-changer type. ► It is absolutely necessary that the diverter switch insert (or selector switch insert, respectively) has been removed. EN 3  2 Step-by-Step 2 Step-by-Step 2.1 Tests and condition-based parts replacement at each maintenance 2.1.1 Inspection of the parallelogram NOTICE Risk of personal damage or injury, damage to property or mal- function If work is performed by insufficiently qualified personnel and/or safety in- structions are not observed, there is a risk of personal damage or injury, damage to property or malfunction. ► Safety, hazard and other information included in the MR operating in- structions for the relevant on-load tap-changer type must be observed! ► Please read the instructions carefully before starting work. ► The realization of the instructions below requires profound knowledge and experience that correspond to the knowledge acquired during a train- ing at MR about maintenance of the relevant on-load tap-changer type. This instruction describes the procedure of inspection of the parallelogram of on-load tap-changers type VACUTAP® RMV-II to make sure that the levers on the parallelogram are not broken and free of any cracks. This work should be performed at every inspection of an on-load tap- changer type VACUTAP® RMV-II. Operate the OLTC electrically If a lever of the parallelogram is broken or cracked, an abnormal sound may occur from the area of the by-pass assembly, see following figure. Visual inspection on the parallelogram Pay attention on the two upper levers (front and back) of the parallelogram, see blue parts in detail see detail of following figure. 4 EN 2 Step-by-Step Cracks are likely present around the rivet bolt, see red marks in detail below river bolt Figure 1: By bass assembly Example of a broken lever of the parallelogram, refer to following figure. Figure 2: Broken lever Procedure, if a broken lever or crack is found Proceed as follows if a broken lever or crack of any size are found: ▪ do not operate the OLTC (electrically and manually) with transformer en- ergized ▪ inform the OPS ▪ replace the parallelogram If the parallelogram cannot be replaced at site: ▪ transformer is allowed to be energized only with the OLTC locked in a fixed tap position ▪ operating the OLTC (electrically and manually) must be prevented ▪ inform the customer about the restrictions EN 5  2 Step-by-Step 2.1.2 Maintenance Guideline Reactor Type OLTC RMV-II_en 6 EN Maintenance Guidelines Reactance VACUTAP® LTCs Type RMV-II Routine Maintenance Procedures RM-ST Mr. Castano Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II General Remarks Although de routine maintenance procedures are very similar for the VACUTAP® LTCs RMV-II and RMV-A the following presentation concentrates on the RMV-II due to the substantially higher number of units in service in North America Statistical data: First VACUTAP® RMV LTC produced in 1990 Total number of RMV units produced as of December 31, 2010: RMV-I/II: 7,844 units (since 1990) RMV-A: 1,261 units (since 2000) Victor Castano Page 2 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II General Remarks Approximately 80% of the work during a routine inspection is a visual examination of the components in the LTC compartment and motor drive. The time to complete the routine maintenance procedures is approximately 8 hours: 1 hour to drain the oil 0.5 hours to open the main inspection door 4.5 hours to clean and complete the maintenance procedures 2.0 hours to close the door and refill the LTC compartment Equipment and materials to be available: Oil filter press Main inspection door gasket Materials for cleaning (rags, oil) CT to generate 20A current (for the operational tripping test) Tools (to open/close inspection door, etc.) Victor Castano Page 3 of 31 Reinhausen Manufacturing Inc. Maintenance Guidelines Reactance LTCs Type RMV Maintenance-Free Intervals With Vacuum Interrupter Monitor (VIM) System Model „A‟ The RMV-II and RMV-A are maintenance-free LTCs through 500,000 operations and 250,000 operations respectively or 7 year time spans, whichever occurs first. Note: The vacuum interrupter monitoring system model “A” was supplied standard with every RMV Type LTC until June 2005! With Vacuum Interrupter Monitor (VIM) System Model „B‟ The maintenance-free interval becomes strictly operations count based, regardless of time span, by use of the model „B‟ Vacuum Interrupters Monitoring System Note: The vacuum interrupter monitoring system model “B” is being supplied standard with every RMV Type LTC since July 2005! Victor Castano Page 4 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II First Steps Verify the transformer is out of service (CBs open and HV/LV grounded) Verify the LTC is on its mechanical neutral position Drain the oil (take a sample for testing: dga and water content) Open front inspection door Visual check oil compartment floor and horizontal surfaces for debris or other signs of abnormal wear or breakage Victor Castano Page 5 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Visual Inspection Sediment found on bottom of OLTC tank, as result of normal wear Victor Castano Page 6 of 31 Reinhausen Manufacturing Inc.  Routine Maintenance Procedures RMV-II Visual Inspection (cont.) Check for rust on all metal parts 5 Horizontal selector shafts between phases (2 total) Check all insulating panels and 6 Main drive shaft (tank bottom to central spider assembly) shafts (e.g. for color change, carbon 7 Reversing switch shafts (3 total) deposits, tracking, cracks, etc.): 8 Spider assembly insulating panels (3 total) 3 7 7 7 5 1 5 8 1 8 2 1 8 2 4 1 By-pass drive shafts (3 total) 6 2 By-pass tie rods (3 total) 3 By-pass phase boards (3 total) 2 4 Epoxy selector board(s) Victor Castano Page 7 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Visual Inspection (cont.) Change-over switch Vacuum Interrupter By-Pass assembly Tap selector Tap selector Victor Castano Page 8 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Vacuum Interrupter Assembly Side view (d) latch (c) Switching rod (e) springs (e) Power spring (a) Bolt tight (d) latch (f) Look into Gap between spring plates and parallelogram (b) Braided connector intact (a) Bolt tight h) Manual pull test of the vacuum (g) Check for integrity of all interrupter springs that drive the V.I Victor Castano Page 9 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Visual Inspection (cont.) Check in all phases the copper bus bars for signs of over heating (discoloration), evidence of coking, and loose hardware Verify that the oil seals do not show signs of leakage  Main drive shaft (a)  Junction plate (b)  Oil gauge  Pressure Relief Device  Others (coupling and nipple connections, dehydrating breather, Sudden Pressure Relay, etc.) (b) (a) Victor Castano Page 10 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Vacuum Interrupter Assembly VACUUM INTERRUPTER (V.I.) ASSEMBLY Verify that  the V.I. manual pull test is normal, free of noise or binding (h)  the V.I. bolt is tight (at bottom end of the V.I.) (a)  there are no cracks or broken strands on the flexible braided connector (b)  that the switching rod of the V.I. does not present cracks (or is broken) (c)  the two latches (d) and their springs (e) of the parallelogram assembly do not present unusual wear (d)  the spring plates of the parallelograms do not touch the cam (f)  the power spring and other vacuum interrupter assembly springs are not broken, cracked or show unusual wear (g)  the V.I. connections look normal at  the stationary (h) end  the moving end (i) Victor Castano Page 11 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Vacuum Interrupter Assembly (cont.) Check the remaining contact life of the vacuum interrupters by measuring the anvil gap on all three phases. (anvil gap measurement - 0.5mm)/4.8mm x 100 = % life remaining Anvil gap Approximate indication Exact measurement Note : This equation only works if the vacuum interrupter has not been removed, or if a used interrupter is reused and set at its previous anvil gap measurement. Vacuum interrupters need to be replaced every 1 million operations regardless of the anvil gap measurement result Victor Castano Page 12 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Vacuum Interrupter Assembly: Hi-Pot Test Hi-Pot Test of the Vacuum Interrupters Due to the extremely high reliability we have experienced with the vacuum interrupters used in the LTCs type RMV over many years in service, we recommend the Hi-Pot Test only as a means of troubleshooting in the unlikely event of a specific suspicion that a vacuum interrupter might be defective. The Hi-Pot Test is not part of the tests Reinhausen recommends to be performed during routine maintenance! Victor Castano Page 13 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Vacuum Interrupter Assembly: Hi-Pot Test (cont.) A Test transformer without center tap, one hot lead B Test transformer with grounded center tap and test voltage of 50kV or higher, one hot lead C Test transformer with grounded center tap, max test voltage lower than 50kV, two hot leads Flexible connector must be removed Fig. 2: Hi-Pot test arrangements Victor Castano Page 14 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Vacuum Interrupter Assembly: Hi-Pot Test Perform Hi-Pot test on vacuum interrupters (Fig. 2)  Ground all transformer windings P3 P2  Move OLTC with hand crank to the “off position” (180º on the cam switch timing wheel)  Disconnect the fiber optic cable from the current transformer (CT)  Temporarily remove the solid bus bar connector with CT (P2). Note: for method C the flexible connector at (P3) must also be removed (see Fig. 2) P3 P2  Place the insulating panel (part 095792 in hi-pot test kit) between the vacuum interrupter and the support  Test each vacuum interrupter by applying a hi-pot test voltage of 25 kV AC or 30 kV DC for one minute  Reconnect the bus bars and the fiber optic cable Victor Castano Page 15 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Monitoring System Tests MONITORING SYSTEM CHECKS Check fiber optic cables for possible damage Ring-out copper conduits to ground Ensure conduits are secure in the support clamps Ensure clamps are installed properly Victor Castano Page 16 of 31 Reinhausen Manufacturing Inc.  Routine Maintenance Procedures RMV-II Monitoring System Tests (cont.) MONITORING SYSTEM CHECKS  Operational Tripping Test  Verify the Monitoring System is operational (green LED illuminated)  Connect a variable CT to bus bar P2 and the stationary contact (A) of the V.I. (see Fig. 1)  Raise the CT to produce approx. 15 to 20A  Start the motor drive mechanism electrically in one direction IMPORTANT P2 It is important to bring the VIM system “B” to the “maintenance mode” before performing LTC operations with the transformer deenergized. To do this: - Press the red button for 5-6 seconds until the 3 yellow LEDs flash. This deactivates the components supervision function for 30 seconds - Press the green button while the yellow LEDs are flashing one, two or three times to deactivate the system for 10, 20 or 30 minutes - Pressing the green button a fourth time will reactivate all A functions Fig. 1: Operational Tripping Test Victor Castano Page 17 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Monitoring System Tests (cont.)  The 86 (L, R or C) relay should trip, the associated red LED should 3 Red LED (trip) illuminate left center  The motor drive mechanism right should stop and return to its Reset Test previous position  The motor drive mechanism must not be operable in either direction, until the monitoring system is reset  Perform the same test but now starting in the opposite direction, and then on the other phases  Be sure to reset the monitoring system so that all 86 relays are “reset” and all red lights are off Green LED (system operational) Victor Castano Page 18 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Operational Tests Operate motor drive mechanism electrically and check stopping on position at random on at least 3 different positions:  Timing wheel to stop at 13º +/- 5º past 0º  Check that by-pass cam match marks line up and the by- pass switches are properly closed.  Verify that the OLTC components in all three phases, tap selector, reversing switch, by- pass, vacuum interrupter, operate in the proper order (refer to Operational Sequence Schematic located in the Instruction Manual) Timing Wheel Victor Castano Page 19 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Operational Tests (cont.) 1L 0º 53º By-pass switch P2 opens 100º Vacuum interrupter opens 181º Selector switch P1 opens 187º Reversing switch A opens 199º Reversing switch B closes 209º Selector switch P1 closes 286º Vacuum interrupter closes 312º By-pass switch P2 closes N 0º 53º By-pass switch P3 opens 100º Vacuum interrupter opens 181º Selector switch P4 opens 209º Selector switch P4 closes 286º Vacuum interrupter closes 312º By-pass switch P3 closes 1R 0º Victor Castano Page 20 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Operational Tests (cont.) Operational Test (for 33pos/32 steps LTC, dial 16L…N…16R) Verify function of 84H micro-switch (lift hand crank boss during electrical tap change operation, motor should stop) Check upper limit position (raise):  Bring LTC electrically to 16R, then give „raise‟ command. LTC should not move. If it does kill power immediately  Selector contacts are at max (CW) position, contacts 11  Reversing switch is “down” (B contact) Verify indication „16R‟ on position indicator Verify that contact interaction is normal Hand crank to the mechanical stop (stop should be reached in not more than 1/2 hand crank turns) Victor Castano Page 21 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Operational Tests (cont.) Check lower limit position (lower): Bring LTC electrically to 16L, then give „lower‟ command. LTC should not move. If it does kill power immediately  Selector contacts are at max (CCW) position, contacts 4  Reversing switch is “up” (A contact)  Verify indication ‟16L‟ on position indicator  Verify that contact interaction is normal Hand crank to the mechanical stop (stop should be reached in not more than 2 1/2 hand crank turns) Victor Castano Page 22 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Operational Tests (cont.) Terminal board of the RMV-II, A with change-over selector R B Stationary contacts of the change-over selector Contactos móviles Preselector P1 P4 R 16R 11 11 B N M M B 16L 4 4 A Stationary contacts of the tap selector P4 P1 View from the OLTC side Victor Castano Page 23 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Final Steps Tap Changer Compartment Check axial clearance on all drive shafts Check all drive shafts for loose couplings and spring pins Check coupling bolts and slots for excessive wear and backlash on all drive shafts. Check for free operation of mechanical stop plate Check mechanical stop plate for breaks, bends, or cracks Check reversing arm for cracks or wear in roller bearing slot Check geneva gears for unusual wear, cracks, or breakage Check mechanical neutral position (12 o‟clock position on indicator) in all three phases:  Motor drive mechanism on mechanical neutral ( 0º on cam switch wheel)  Selector P1 and P4 moving contacts at “12 o‟clock” position  Reversing switch moving contact in “down” position (on B contact) Victor Castano Page 24 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Final Steps Motor Drive Compartment Check motor drive for unusual sounds or vibrations Verify electrical operation of electrical drag hand reset coil Check motor drive compartment for:  Debris on compartment floor  Corrosion, moisture and mold  Oil to air seals free of leaks  Check cam switch for loose or missing hardware  Check micro-switches for proper alignment and operation  Gear lubrication  Check brake relay. Replace every 500,000 operations  Check cam switch shafts for binding Victor Castano Page 25 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Final Steps Inspect LTC externally Check for excessive corrosion Check that motor drive and monitoring box are grounded Ensure the dehydrating breather silica-gel is dry and the oil collection cell is filled to the proper level with clean oil Prepare LTC for service Wipe oil compartment clean with dry rags Ensure monitoring system is reset Close inspection door, compressing gasket to proper thickness 5/16” or torque to 11.1ft. Lbs. Fill per guidelines in instructions manual Victor Castano Page 26 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Spare Parts Refer to section 9 of the RMV-II instruction manual Victor Castano Page 27 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Parts Replacement Recommendation Replacement during every inspection Inspection door gasket Small parts (o-rings, coupling bolts, corona shields) Replacement every 500,000 operations Brake relay Replacement every 1,000,000 operations Vacuum Interrupter and flexible (braided) connector Selector stationary and moving contacts (1.5 million on 1,500Amps variants) Replacement every 2,000,000 operations By-pass and Vacuum Interrupter assembly (includes V.I. and flexible connector) Replacement every 2,500,000 operations Motor Drive mechanism Replacement every 15 years VIM board models A and B, and fiber optic cables when model A is being used Victor Castano Page 28 of 31 Reinhausen Manufacturing Inc. Retrofits Performed by Repair Shops and Utilities: Siemens N.E.S. GE S.C.E./Edison ESI GE/Ohio Transformer/S.D. Myers B.C.H. Southwest Electric Georgia Power VTCU Corp/US Transformers SDG&E Hydro Quebec Types: Westinghouse (URT, UTT, UVT, URS) GE (LRT) Allis (TLH, TLS) Federal Pacific (TC546) McGraw (550) Ferranti (RT32) Victor Castano Page 29 of 31 Reinhausen Manufacturing Inc. Routine Maintenance Procedures RMV-II Victor Castano Page 30 of 31 Reinhausen Manufacturing Inc.  2 Step-by-Step 2.1.3 Replacement intervals for OLTC components During maintenance of the on-load tap-changer VACUTAP® RMV-II certain components must be replaced, depending on the number of operations per- formed. There is no time-based criterion for any replacement of parts. Number of tap change operations Components to 500, 1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 be replaced 000 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0,00 0 0 0 0 0 0 0 0 0 0 Door gasket x x x x x x x x x x x Silica Gel x x x x x x x x x x x Front plate x x x x x x x x x x x corona shield/ nuts Geneva gear Must be replaced by a helical gear with 10 mm roller pin, at the and helical next maintenance. For more details see a separate Technical In- gear with 8 mm struction. roller pin Geneva gear x x x x x and helical gear with 10 mm roller pin Coupling kit x x x x x Selector con- x x x x x tacts (fixed and moving) Fiber kit x x x x x Vacuum inter- x x x x x rupters By-pass as- x x sembly Selector spider x Table 1: Components for replacement depending on number of performed operations The complete on-load tap-changer VACUTAP® RMV-II should be replaced after 6,000,000 operations. 38 EN 2 Step-by-Step 2.2 Parts replacement after fixed number of tap-change operations intervals 2.3 One-time retrofit and modifications 2.3.1 Replacement criteria of the helical gear and Geneva wheel NOTICE! The realization of the instructions below requires profound knowl- edge and experience that correspond to the knowledge acquired during a training at MR about maintenance of on-load tap-changers type VACUTAP® RMV-II. The technical instruction describes the criteria for replacing the heli- cal gear and front Geneva wheel of the VACUTAP® RMV-II. The helical gear with 8 mm roller pin must be replaced by a helical gear with 10 mm roller pin, during the next maintenance, independent of the number of operations. Make sure to document the replacement in the service report. All delivered on-load tap-changers type VACUTAP® RMV-II produced start- ing from January 26, 2017, are equipped with the helical gear with 10 mm roller pin. The helical gear with 10 mm roller pin must be replaced after 1,000,000 tap- change operations. The front Geneva wheel must also be replaced after 1,000,000 tap-change operations. If the helical gear was replaced during an Intermediate Maintenance and not during a General Standard Maintenance, it is recommended to replace the helical gear again during the next General Standard Maintenance, in order to retain the intervals and the scope of the work for the Intermediate Mainte- nance and the General Standard Maintenance. Helical gear Roller with the roller pin Rear Geneva wheel Front Geneva wheel EN 39  2 Step-by-Step 2.3.2 From 2019-09-01 to 2020-02-28 - Replacement of two bolts at the P connection This instruction describes the procedure of inspection and replacement of the two bolts at the P connection if on-load tap-changers type VACUTAP RMV-II600/1000A. This work has to be performed for the following types which were delivered between September 2019 and February 2020: ▪ VACUTAP RMV-II 600A, 15 and 26.4kV ▪ VACUTAP RMV-II 1,000A, 15 and 26.4kV 1. Make sure that the high and low side breakers are open and xfmr grounded 2. Drain 280 gallons of oil into a clean container 3. Remove the two longer bolts at the P connection 4. Install the shorter bolts, washers and nuts Place the bolt and washer through the P-Lead and attach to the top of the boomerang on the backside of the Bypass assembly. 40 EN 2 Step-by-Step Tighten to 18 Nm with calibrated click wrench. 1. Close LTC door, torque Nuts to 16.5 Nm and pump LTC back into LTC. 2. New hardware for shorter bolts. ▪ 450093 Bolts 6 per LTC ▪ 451326 Washer 12 per LTC ▪ 45397801 Nut 6 per LTC EN 41  3 Assemblies 3 Assemblies 3.1 General 3.1.1 CI700602 Testing for crossed preventative autotransformer connections Test inside the LTC Operate the LTC in Raise direction from neutral until P4 (upper selector moving contact) and P3 (left side bypass arcing contact) are open. The tim- ing wheel dial should read about 195 degrees. With these two contacts open, use a continuity tester (light or bell) and touch the P4 and P3 contacts as per the photo below. There should be a closed circuit. Check all three phases accordingly. If there is not continuity during this test on any of the three phases, then the P1 and P4 or P2 and P3 leads are crossed in the transformer for that particular phase. Complete the test for additional jumpers incorrectly installed by checking P3-P2, P3-P1, P4-P2 & P4-P1. These checks should show an open circuit. P4 P3 42 EN 3 Assemblies Double check by operating the LTC in the Lower direction from neutral until P1 (inner selector moving contact) and P2 (upper bypass arcing contact) are open. The timing dial should read about 185 degrees. The tests should have the same results as indicated above (touching P1 & P2 should show a closed circuit and P3-P2, P3-P1, P4-P2 & P4-P1 should show an open cir- cuit). P1 P2 3.1.2 Crossed PA Lead Test RMV-II_MD-III Test inside the LTC Operate the LTC in Raise direction from neutral until P4 (upper selector moving contact) and P3 (left side bypass arcing contact) are open. The tim- ing dial should read 17 sections. With these two contacts open, use a conti- nuity tester (light or bell) and touch the P4 and P3 contacts as per the photo below. There should be a closed circuit. Check all three phases accordingly. EN 43  3 Assemblies If there is not continuity during this test on any of the three phases, then the P1 and P4 or P2 and P3 leads are crossed in the transformer for that partic- ular phase. Complete the test for additional jumpers incorrectly installed by checking P3-P2, P3-P1, P4-P2 & P4-P1. These checks should show an open circuit. P/4 P/3 Double check by operating the LTC in the Lower direction from neutral until P1 (inner selector moving contact) and P2 (upper bypass arcing contact) are open. The timing dial should read 17 sections. The tests should have the same results as indicated above (touching P1 & P2 should show a closed circuit and P3-P2, P3-P1, P4-P2 & P4-P1 should show an open circuit). P/1 44 EN 3 Assemblies P/2 3.1.3 Instructions Manual Hi-Pot Test Set (8993C81H24_Rev2) 115 VAC INPUT 1. Make sure all connections to hi-pot are secure and tight on rear panel of unit 2. Push on the 15 pin connector on rear panel to short required pins for op- eration 3. Attach the hi-pot leads to the vacuum interrupters as per RMV-II or RMV- A Instruction Manual, Hi-Pot test circuit ‘A’ (Testing with an asymmetrical test transformer) 4. Note: Clean the vacuum interrupters with ethyl alcohol insuring no oil film that can cause tracking is present. Handle, use and dispose of ethyl alco- hol in accordance with OSHA requirements. 5. Connect three prong 115Vac supply cord to source insuring connection of earth ground 6. Set and lock current knob to 3.0 ( lock with slide button ) Set the voltage knob to 0 7. Push power-on rocker switch to “on” position 8. Position local-remote toggle to “local” position 9. Position ma-kv slide to “kv” position (located beside digital front panel me- ter) 10. Position on-off toggle to “on” position - you are now live! 11. Slowly ramp up the voltage to a meter reading of 30.0 (30kv dc ) for the RMV-II or 14.0 (14kv dc) for the RMV-A while insuring that the current LED does not illuminate ( alternate: change slide switch to “mA” position once voltage level has been reached and verify less than 0.12 on meter ) EN 45  3 Assemblies 12. If current LED illuminates or current display over 0.12 (120 uA ) then the interrupter is defective, not in the ‘open’ position , dirty with oil film or not properly insulated from its surroundings. 13. Ramp voltage back down to 0 (zero kv ). Flip on-off toggle switch (ref step 9) to “off” position and then shut off power (ref step 6) rocker switch. Disconnect power supply cord from source. 14. CAUTION: All four steps in item 12 must be completed prior to knock- down of setup 15. Reassemble the previously disconnected or removed items using new locking hardware as per instruction in the RMV-II or RMV-A Instruction Manual. (ref Spare Parts section for “Hi-Pot Test” Spare Parts) 3.1.4 Instructions on how to replace the fiber optic cables RMV-II LTC Safety Instructions ▪ De-energize the Transformer ▪ Drain the oil from LTC ▪ Put the controls on Local and Manual Mode Tools to perform fiber optic replacement 1. Torque wrench (FT-LB) 1. Small flat head screwdriver 1. Large flat head screwdriver 1. Pair of pliers (side cutters) 1. 10mm ratchet wrench and 10mm wrench 2. 8mm wrenches 46 EN 3 Assemblies 1. Wire tie pullers Current injection tester Remove all the nuts and washer from LTC door and save them 1. Disconnect Orange, Blue and Green wires from CT 2. Take loose the clamp from CT using the 8mm wrenches EN 47  3 Assemblies Left side of P2 Right side of P3 Take these nuts and bolts loose with 10mm wrenches Cut the wire ties with pliers (side cutters) 48 EN 3 Assemblies Record the number or location of each wire Disconnect the Black, White and Brown wires from junction plate And the clamp on the junction plate using the small and large screw drivers Pull fiber optic cable from conduit and insert new fiber optic cable NOTE! Use old cable to pull new one through conduit Make a hook out of wires and twist them gently and apply small amount of tape around the cables Reconnect fiber optic cable to junction plate to the correct terminal EN 49  3 Assemblies Secure the fiber optic cable with wire ties and rubber pads Right side of P2 Left side of P2 Secure CT lead and fiber optic cable with clamp using the 10mm wrenches 1. Run the fiber optic cable through the clamp and secure it with the 8mm wrenches 2. Reconnect the Orange Blue and Green wires 50 EN 3 Assemblies Connect the leads from the current injection tester on CT one on top one on bottom 1. Connect the tester to 110v AC 2. Pushing the green button will create a 25A output to CT While pushing the green button on the tester, give the LTC a Lower or Raise command. The LTC will try to change taps but the LTC will run back to the previous position and generate a Red lock-out on the circuit board. Reset the alarm and perform the same test on all 3 phases. When you operate the LTC while injecting current through the CT, the VIM will generate a Red alarm on the circuit board and this will verify that the monitoring system and all the components are in working order. After the test is completed, verify that no foreign objects are left behind in the LTC (oil compartment) EN 51  3 Assemblies Close the door install washer and nuts and torque them to 11 FT-LBS (15 Nm) Do not over compress the gasket this is the gap between the door and the tank Fill the LTC with oil, wait for 1 hour, this will allow any bubbles in the oil to dissipate and then energize the transformer 52 EN 3 Assemblies 3.1.5 Main Tank Door Torquing EN 53 3 Assemblies 3.1.6 MESSKO Oil Gage Body Replacement EN 55 MESSKO Oil Gage Head Replacement (Field) Ref # S02190701 2/19/2007 Page 1 MESSKO Oil Gage Head Replacement (Field) Ref # S02190701 2/19/2007 Page 2 MESSKO Oil Gage Head Replacement (Field) Ref # S02190701 2/19/2007 Page 3 MESSKO Oil Gage Head Replacement (Field) Ref # S02190701 2/19/2007 Page 4  3 Assemblies 3.1.7 Neutral position RMV 60 EN Neutral Position for RMV type LTC Reinhausen Manufacturing Inc. Neutral position: Motor drive Position Indicator needs to be at neutral “N”. Angle Indicator needs to be at 0⁰. Department Date: 28.09.2009 Page 2 © Maschinenfabrik Reinhausen GmbH 2009 Neutral position: Motor drive Department Date: 28.09.2009 Page 3 © Maschinenfabrik Reinhausen GmbH 2009 Neutral position: RMV-II oil compartment (Contacts) Reversing switch needs to be at the lower contact Selector switches need to be at non-bridging position at the 12 o’clock contact. Department Date: 28.09.2009 Page 4 © Maschinenfabrik Reinhausen GmbH 2009 Neutral position: RMV-II oil compartment (Bypass) The marks on the bypass need to align. Department Date: 28.09.2009 Page 5 © Maschinenfabrik Reinhausen GmbH 2009 Neutral position: RMV-A oil compartment (Contacts) Bypass switch needs to be bridging between two contacts P2 & P3 P3. Reversing switch needs to be at the front contact (the left contact). Selector switch needs to be at a non-bridging position at the 12 o’clock o clock contact contact. Department Date: 28.09.2009 Page 6 © Maschinenfabrik Reinhausen GmbH 2009  Neutral position: RMV-A oil compartment (Gears) This hole and the one behind it needs to line up. Department Date: 28.09.2009 Page 7 © Maschinenfabrik Reinhausen GmbH 2009 3 Assemblies 3.1.8 Oszilogram_wiring_4D48011 EN 69 3 Assemblies 3.1.9 Replacing position indication decal 1. Take off the three screws that hold the clear cover over the decal. 2. In order to clear the top of the position indication dial to place the decal, use the hand crank and manually operate the LTC to move the yellow pointer and one of the red pointers pass 16L position but DO NOT reach the golden pin at 6 o’clock position. 3. Use the hand crank and manually operate the LTC to move the yellow pointer and the other red pointer pass 16R position but DO NOT reach the golden pin at 6 o’clock position. 4. Place the decal over the position indication dial with the N position at 12 o’clock position. Make sure that the three small holes on the decal line up with the three threads for the crews that holds the clear cover. 5. Use the hand crank and manually operate the LTC to move the yellow pointer to N position. 6. Push the reset button on the left side of the position indication dial and re- set the two red pointer to N position. 7. Install the clear cover with three screws. 3.1.10 Reverse Polarity Test on RMV-II TESTING FOR REVERSE POLARITY IN THE PREVENTIVE AUTOTRANSFORMER (P1, P2, P3, & P4) Tools needed to perform the Test. 9v battery. Galvanometer. Common tools to drain the LTC Oil, and to open the LTC Door. De-energize the Transformer, Ground the High and Low side bushings and Drain the LTC Oil. Hand crank the LTC in the Raise direction from Neutral. The timing wheel dial should read about 195 degrees. Step 1. Record results on page 2. 1. Connect one cable from the Positive side of the Battery to the toggle switch (1), and from toggle switch (2) to P/1. 2. Connect the Positive lead from the Galvanometer to P/1. 3. Connect the Negative lead of the Galvanometer to P/2. 4. Connect the Negative side of the Battery to P/2. Momentarily turn On/Off the Switch, and the Needle on the Galvanometer should move to the right. EN 71  3 Assemblies Step 2. Record results on page 2. 1. Connect the Positive lead from the Galvanometer to P/4. 2. Connect the Negative lead of the Galvanometer to P/3. Momentarily turn On/Off the Switch, and the Needle on the Galvanometer should move to the left. Figure 3: Step1. Figure 4: Step2. Terminals Deflection (Pos. ? Neg.?) Results Left Phase Center Phase Right Phase P/1-P/2 Right P/3-P/4 Left Note: During testing on Step 1 and Step 2. if the needle on the galvanometer moves in the same direction, then P/1 and P/2 or P/3 and P/4 may have the polarity reversed. See example below 3.1.11 RF702100 UVT-LTX Crossed Leads Test (P1, P2, P3 & P4 LEADS) 72 EN 3 Assemblies Test inside the LTC Operate the LTC in Raise direction from neutral until P1 (upper selector moving contact) and P2 (left side bypass arcing contact) are open. The tim- ing wheel dial should read about 180 degrees. With these two contacts open, use a continuity tester (light or bell) and touch the P1 and P2 contacts as per the photo below. There should be a closed circuit. Check all three phases accordingly. If there is not continuity during this test on any of the three phases, then the P1 and P4 or P2 and P3 leads are crossed in the transformer for that particular phase. Complete the test for additional jumpers incorrectly installed by checking P2-P3, P2-P1, and P1-P2 & P1-P4. These checks should show an open circuit. P-1 P-2 Double check by operating the LTC in the Lower direction from neutral until P4 (inner selector moving contact) and P3 (upper bypass arcing contact) are open. The timing dial should read about 195 degrees. The tests should have the same results as indicated above (touching P4 & P3 should show a closed circuit and P3-P2, P3-P1, P4-P2 & P4-P1 should show an open cir- cuit). P-4 EN 73  3 Assemblies P-3 Note: When in Neutral the UVT-LTX has the cam on the Bypass turned 180° ( The Delta mark on the cam is on the bottom) 74 EN 3 Assemblies 3.1.12 RMV Switching Sequence_km_Dec2011 EN 75  Switching Sequence of Reactor Type OLTC VACUTAP® RMV © Maschinenfabrik Reinhausen GmbH The copying, distribution and utilization of this document as well as the communication of its contents to others without expressed authorisation is prohibited. Each copy has to contain this copyright notice. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration. Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Non-Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 AIW P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 186 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 IL P1 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 AIW P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 186 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n to n+1 tap n tap n+1 P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV operation finished tap n tap n+1 P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Non-Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Non-Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 AIW P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 186 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 AIW P1 P4 Ic IL IL P1 2 2 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 186 P1 P4 IL P1 P2 VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 IL P1 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV from tap position n+1 to n tap n tap n+1 P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 Switching Sequence of reactor type OLTC VACUTAP® RMV operation finished tap n tap n+1 P1 P4 IL IL P1 2 2 P2 VI VI CT P4 P3 P2 P3 approx. 2000 ms approx. 2000 ms P n n+1 Non-Bridging Position E/Dr. Dieter Dohnal_K Mosley Dec2011 Date: 19.11.02 3 Assemblies 3.1.13 RMV-II LTC Commissioning RMV-II LTC Commissioning: Job #_______________ LTC Ser #_________________ Customer_____________________ Technician___________________________ Date_____________ LTC: Oil Compartment 1. Mechanically move LTC and MD to Neutral Position. 2. Verify the Neutral position in the Oil compartment 3. Verify the Neutral position in Motor Drive 4. Verify the size of selector and reversing contacts. 5. Check for free play on all drive shafts, (No binding). 6. Verify the tamper marks on the Vacuum Interrupters. 7. Check bottle connections for 3 all phases. 8. Check the Braided connectors. 9. Verify the wear indicator on (S). 10. Verify the Anvil Gap 5.00 and 5.45mm 11. Perform ring and pull test on vacuum bottles. 12. Check free operations of mechanical stops. 13. Verify the 290 Loctite or Solder on Oil gage, and check for proper op- eration. 14. Check fiber optics for routing and possible damage. 15. Ring conduits to ground. 16. Conduit secured with clamps. 17. Verify that the Breather contains Silica Gel, and Oil in the collection cell Motor Drive: MD-I/MD-II 1. Verify the location of all switches, labels, decals, and name plates per drawings. 2. On MD-II verify that 8-2 breaker is set to 6.0A 3. Verify all cabinet parts grounded – Door – Back Panel – Hinged Panel (MD-II) EN 105  3 Assemblies – TAPCON if applicable (MD-II) – Convenience Outlet 4. Check Breakers, Auxiliary Breakers, Special Switches, and Special Relays – 8-2 Breaker (MD-II Motor Auxiliary Contacts) – 8-3 Breaker ( MD-II Heaters Auxiliary Contacts) – Alarm Contacts on 86XA (MD-II) – Special Relays, Micro Switches, and Drum Switches 5. Turn Breaker On, and check the voltage supply. – MD-I with 120V Motor, T-1 to T-2= 120Vac, and T-17 to T-2= 120Vac – MD-I with 208 to 240V Motor, T-1 to T-2= 120Vac, T12 to T17=240Vac – MD-II with 120V Motor, T-1 to T-2= 120Vac – MD-II with 208 to 240V Motor, T-1 to T-3= 120Vac, T-2 to T-4= 120Vac, and T-1 to T-2= 240Vac. 6. Insert the Hand Crank, and verify function of 84H micro switch. 7. Remove Hand Crank. Operational Test: 1. Perform Crosses P.A. Lead Test. 2. Perform stopping on position on the Raise direction. – Verify Contact engagement, and the Degrees on timing wheel >5° to 18°. – At 16R verify the mechanical stop.5 Turn in the Raise direction. – At 16R verify the electrical limit. Try to run the LTC another position, the LTC should not move. 3. Listen for unusual sounds or vibrations. 4. Perform stopping on position on the Lower direction. – Verify Contact engagement, and the Degrees on the timing wheel > 5° to >18°. – At 16L verify the mechanical stop 2.5 turns in the Lower direction. – At 16L verify the electrical limit. Try to run the LTC another position, the LTC should not move. 5. Listen for unusual sounds or vibrations. 6. Return LTC to Neutral Position. 7. Verify function of 130 cam, hand crank motor drive between 60° and 90°, remove hand crank, the LTC should run to the next Lower position. 106 EN 3 Assemblies 8. Perform current injection test on all 3 phases, run LTC in both direc- tions L/R. – Left Phase – Center Phase – Right Phase 9. Return LTC to Neutral Position, and reset the Drag Hands. Final Checks: 1. Report the slightest dirt or moisture in the oil compartment to the cus- tomer. 2. Ensure all the electrical connections are tight. 3. Ensure all Corona Shield are bent down. 4. Wipe down inside of the oil compartment. 5. Ensure no tools or cleaning rags are left in the oil compartment. 6. Ensure that the Inspection door gasket is properly installed. 7. Torque the Nuts on the LTC door to 12ft.lbs. Note: Please ensure that the LTC is re-fill with clean or new oil The LTC and MD are not prepare for storage in an unheated building or out- doors, such conditions require. ▪ Filling the LTC tank with clean dry oil, and the gas space with dry nitro- gen. ▪ The Heaters on the Motor Drive need to be connected to power supply. Customer: ____________________ Signature_____________________ 3.1.14 RMV-II LTC Inspection RMV-II LTC Inspection: Job #_______________ LTC Ser #_________________ Customer_____________________ Technician___________________________ Date_____________ LTC: Oil Compartment 1. Mechanically move LTC and MD to Neutral Position. 2. Verify the Neutral position in the Oil compartment 3. Verify the Neutral position in Motor Drive 4. Verify the size of selector and reversing contacts. 5. Check for free play on all drive shafts, (No binding). EN 107  3 Assemblies 6. Verify the tamper marks on the Vacuum Interrupters. 7. Check bottle connections for 3 all phases. 8. Check the Braided connectors. 9. Verify the wear indicator on (S). 10. Verify the Anvil Gap 5.00 and 5.45mm 11. Perform ring and pull test on vacuum bottles. 12. Check free operations of mechanical stops. 13. Verify the 290 Loctite or Solder on Oil gage, and check for proper op- erati