Table of Contents
Advertisement
Contents
1
1.1
Levels of safety risks ................................................................................................................................................................... 5
1.2
Hazardous working situations ..................................................................................................................................................... 6
1.3
Safety precautions....................................................................................................................................................................... 6
1.4
Competence level........................................................................................................................................................................ 6
2
2.1
Design ......................................................................................................................................................................................... 7
2.2
Technical specifications ............................................................................................................................................................... 10
2.2.1
General specifications ............................................................................................................................................... 10
2.2.2
Mechanical loading.................................................................................................................................................... 11
3
3.1
Incoming inspection..................................................................................................................................................................... 13
3.2
Transportation ............................................................................................................................................................................. 13
3.3
Storage ........................................................................................................................................................................................ 13
3.4
Lifting ........................................................................................................................................................................................... 14
3.4.1
Lifting the transport box ............................................................................................................................................. 14
3.4.2
Lifting the bushing out of the transport box ............................................................................................................... 15
4
4.1
Tools ............................................................................................................................................................................................ 19
4.2
Consumables .............................................................................................................................................................................. 19
4.3
Preparations ................................................................................................................................................................................ 20
4.3.1
Installation of lifting tools ........................................................................................................................................... 20
4.3.2
Lifting the bushing for installation on the transformer................................................................................................ 22
4.4
Installation at the transformer factory .......................................................................................................................................... 24
4.4.1
Removal of the lower draw rod with bottom contact from the bushing ..................................................................... 24
4.4.2
Installation of the small bottom contact (N1=4) in the transformer ............................................................................ 27
4.4.3
Installation of the large bottom contact (N1=6) in the transformer ............................................................................ 29
4.4.4
Installation of the bushing on the transformer ........................................................................................................... 31
4.4.5
Installation of the bushing with the fixed bottom contact ........................................................................................... 34
4.5
Installation at site......................................................................................................................................................................... 36
4.5.1
Preparations at site ................................................................................................................................................... 36
4.5.2
Installation of the bushing on the transformer at site................................................................................................. 39
4.5.3
Installation of the bushing with the fixed bottom contact ........................................................................................... 34
4.6
Hydraulic tightening of the draw-rod nut...................................................................................................................................... 45
4.7
Minimum oil-level in transformer ................................................................................................................................................. 49
4.8
Installation of the outer terminal .................................................................................................................................................. 49
4.9
Grounding of the bushing flange ................................................................................................................................................. 52
Installation and commissioning guide
1ZSC000563-AAF EN, REV. 4, 2021-06-23
5
7
13
19
3
Advertisement
Table of Contents
