ABB GOE(2) - Table of Contents

Installation and commissioning guide
1ZSC000563-ACF EN, REV. A, 2020-06-25
3
Contents
1  Safety 5
1.1  Levels of safety risks ................................................................................................................................................................... 5
1.2  Hazardous working situations ..................................................................................................................................................... 6
1.3  Safety precautions....................................................................................................................................................................... 6
1.4  Competence level........................................................................................................................................................................ 6
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2  Product description 7
2.1  Design ......................................................................................................................................................................................... 7
2.2  Technical specification................................................................................................................................................................. 11
2.2.1  General specifications ............................................................................................................................................... 11
2.2.2  Mechanical loading.................................................................................................................................................... 11
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3  Delivery 13
3  Incoming inspection..................................................................................................................................................................... 13
3.1  Transportation ............................................................................................................................................................................. 13
3.2  Storage........................................................................................................................................................................................ 13
3.3  Lifting........................................................................................................................................................................................... 14
3.3.1  Lifting the transport box............................................................................................................................................. 14
3.3.2  Lifting the bushing out of the transport box ............................................................................................................... 15
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4  Installation 17
4.1  Tools ............................................................................................................................................................................................ 17
4.2  Consumables .............................................................................................................................................................................. 17
4.3  Preparations ................................................................................................................................................................................ 18
4.3.1  Installation of lifting tools ........................................................................................................................................... 18
4.3.2  Lifting the bushing for installation on the transformer................................................................................................ 20
4.4  Installation with draw lead ........................................................................................................................................................... 21
4.4.1  Installation with draw lead ......................................................................................................................................... 21
4.5  Installation with draw rod at transformer factory.......................................................................................................................... 25
4.5.1  Removal of the lower draw rod with bottom contact from the bushing ..................................................................... 25
4.5.2  Installation of the small bottom contact in the transformer ........................................................................................ 29
4.5.3  Installation of the large bottom contact in the transformer ........................................................................................ 30
4.5.4  Installation of the bushing on the transformer ........................................................................................................... 32
4.6  Installation with draw rod at site .................................................................................................................................................. 35
4.6.1  Preparations at site ................................................................................................................................................... 35
4.6.2  Installation of the bushing on the transformer at site................................................................................................. 38
4.7  Hydraulic tightening of the draw-rod nut...................................................................................................................................... 42
4.8  Manual tightening of the draw-rod nut......................................................................................................................................... 45
4.9  Minimum oil-level in transformer ................................................................................................................................................. 46
4.10  Installation of the outer terminal .................................................................................................................................................. 46
4.11  Grounding of the bushing flange ................................................................................................................................................. 49