MR VACUTAP VR Installation and operation manual

On-Load Tap-Changer
VACUTAP® VR®
Installation and Commissioning Instructions
4349315/00 EN

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The original operating instructions were written in German.

Table of contents
Maschinenfabrik Reinhausen GmbH 2015 34349315/00 EN VACUTAP® VR®
Table of contents
1Introduction....................................................................................................................... 10
1.1 Validity............................................................................................................................................... 10
1.2 Manufacturer..................................................................................................................................... 10
1.3 Subject to change without notice....................................................................................................... 10
1.4 Completeness.................................................................................................................................... 10
1.5 Supporting documents....................................................................................................................... 11
1.6 Safekeeping....................................................................................................................................... 11
1.7 Notation conventions......................................................................................................................... 11
1.7.1 Symbols............................................................................................................................................................... 11
1.7.2 Hazard communication system........................................................................................................................... 12
1.7.3 Information system.............................................................................................................................................. 14
2Safety................................................................................................................................. 15
2.1 General safety information................................................................................................................ 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 devices in the motor-drive unit........................................................................................................... 20
3Product description.......................................................................................................... 21
3.1 Scope of delivery............................................................................................................................... 21
3.2 On-load tap-changer.......................................................................................................................... 21
3.2.1 Function description............................................................................................................................................ 21
3.2.2 Performance features.......................................................................................................................................... 22
3.2.3 Setup/models...................................................................................................................................................... 23
3.2.4 Name plate.......................................................................................................................................................... 27

Table of contents
Maschinenfabrik Reinhausen GmbH 20154 4349315/00 ENVACUTAP® VR®
3.3 Drive shaft......................................................................................................................................... 27
3.3.1 Function description............................................................................................................................................ 27
3.3.2 Performance features.......................................................................................................................................... 27
3.3.3 Setup/models of drive shaft................................................................................................................................. 27
3.4 RS protective relay............................................................................................................................ 29
3.4.1 Function description............................................................................................................................................ 30
3.4.2 Performance features.......................................................................................................................................... 30
3.4.3 Setup/models of protective relay......................................................................................................................... 31
3.5 Pressure monitoring device DW........................................................................................................ 32
3.5.1 Function description............................................................................................................................................ 32
3.5.2 Performance features.......................................................................................................................................... 33
3.5.3 Structure/versions of the pressure-operated relay.............................................................................................. 33
4Packaging, transport and storage................................................................................... 36
4.1 Packaging.......................................................................................................................................... 36
4.1.1 Suitability............................................................................................................................................................. 36
4.1.2 Markings.............................................................................................................................................................. 36
4.2 Transportation, receipt and handling of shipments............................................................................ 37
4.3 Storage of shipments......................................................................................................................... 38
4.4 Unpacking shipments and checking for transportation damages...................................................... 39
5Assembly: Standard design............................................................................................. 40
5.1 Preparatory work............................................................................................................................... 40
5.1.1 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 VRD/VRF............................................... 47
5.2.4 Securing tap selector on oil compartment of the on-load tap-changer VRG....................................................... 50
5.2.5 Connecting tap selector take-off leads................................................................................................................ 52
5.3 Connecting tap winding and on-load tap-changer take-off lead........................................................ 52
5.3.1 Tap selector connection contacts VRC/VRE....................................................................................................... 52
5.3.2 Tap selector connection contacts for multiple coarse change-over selector VRC.............................................. 54
5.3.3 Change-over selector connection contacts for reversing change-over selector connection VRC/VRE.............. 54
5.3.4 Change-over selector connection contacts for coarse tap selector connection VRC/VRE................................. 56
5.3.5 Selector connection contacts VRD/VRF.............................................................................................................. 57

Table of contents
Maschinenfabrik Reinhausen GmbH 2015 54349315/00 EN VACUTAP® VR®
5.3.6 Change-over selector connection contacts for reversing change-over selector connection VRD/VRF.............. 58
5.3.7 Change-over selector connection contacts for coarse tap selector connection VRD/VRF................................. 58
5.3.8 Parallel bridges for VRF I 1601........................................................................................................................... 58
5.3.9 Fine-tap-selector and change-over-selector connection contacts VRG.............................................................. 59
5.3.10 Parallel bridges for VRG I 1601........................................................................................................................... 60
5.3.11 Connecting on-load tap-changer take-off lead.................................................................................................... 60
5.4 Carrying out the transformer ratio test............................................................................................... 60
5.4.1 Carrying out transformer ratio test with TAPMOTION® TD test drive................................................................. 61
5.4.2 Carrying out the transformer ratio test manually................................................................................................. 61
5.5 Measuring DC resistance on transformer.......................................................................................... 63
5.6 Drying on-load tap-changer in autoclave........................................................................................... 64
5.6.1 Vacuum-drying in the autoclave.......................................................................................................................... 64
5.6.2 Vapor-phase drying in the autoclave................................................................................................................... 65
5.7 Drying on-load tap-changer in transformer tank................................................................................ 66
5.7.1 Vacuum-drying in the transformer tank............................................................................................................... 66
5.7.2 Vapor-phase drying in the transformer tank........................................................................................................ 67
6Assembly: Bell-type tank design..................................................................................... 90
6.1 Preparatory work............................................................................................................................... 90
6.1.1 Fitting mounting 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
6.2.4 Connecting tap selector take-off leads................................................................................................................ 99
6.2.5 Inserting on-load tap-changer into supporting structure.................................................................................... 100
6.3 Connecting tap winding and on-load tap-changer take-off lead...................................................... 101
6.3.1 Tap selector connection contacts VRC/VRE..................................................................................................... 101
6.3.2 Tap selector connection contacts for multiple coarse change-over selector VRC............................................ 102
6.3.3 Change-over selector connection contacts for reversing change-over selector connection VRC/VRE............ 103
6.3.4 Change-over selector connection contacts for coarse tap selector connection VRC/VRE............................... 105
6.3.5 Selector connection contacts VRD/VRF............................................................................................................ 106
6.3.6 Change-over selector connection contacts for reversing change-over selector connection VRD/VRF............ 107
6.3.7 Change-over selector connection contacts for coarse tap selector connection VRD/VRF............................... 107
6.3.8 Parallel bridges for VRF I 1601......................................................................................................................... 107
6.3.9 Fine-tap-selector and change-over-selector connection contacts VRG............................................................ 108