Installation and commissioning guide
1ZSC000562-AAK EN, REV. 2, 2019-07-03
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Contents
Levels of safety risks ................................................................................................................................................................... 5
Hazardous working situations ..................................................................................................................................................... 6
Safety precautions....................................................................................................................................................................... 6
Design ......................................................................................................................................................................................... 7
Incoming inspection..................................................................................................................................................................... 9
Transportation ............................................................................................................................................................................. 9
Storage........................................................................................................................................................................................ 9
Lifting........................................................................................................................................................................................... 10
3.4.1
Lifting the transport box............................................................................................................................................. 10
Lifting the tap-changer out of the transport box......................................................................................................... 11
Installation in the transformer
Tools ............................................................................................................................................................................................ 15
Consumables .............................................................................................................................................................................. 16
Installation in the transformer ...................................................................................................................................................... 16
4.3.1
Installation in the cover.............................................................................................................................................. 16
Installation on the yoke ............................................................................................................................................. 19
Connection of conductors to the terminals .................................................................................................................................. 21
Installation of the top flange, yoke-mounting............................................................................................................................... 22
Transformer ratio measurement .................................................................................................................................................. 25
Preparations ................................................................................................................................................................................ 29
Drying processes......................................................................................................................................................................... 30
5.2.1
Overview ................................................................................................................................................................... 30
Drying with the alternating hot air and vacuum process............................................................................................ 30
Drying with the vapor phase process ........................................................................................................................ 30
After drying .................................................................................................................................................................................. 31
Installation of the motor-drive mechanism................................................................................................................................... 33
Installation of the external drive shafts ........................................................................................................................................ 33
Synchronization of the motor-drive.............................................................................................................................................. 44
6.3.1
Synchronization of BUL2........................................................................................................................................... 44
Synchronization of BUE2 .......................................................................................................................................... 46
Installation of the oil conservator................................................................................................................................................. 47
Installation of the oil tap............................................................................................................................................................... 49
Installation of protection devices ................................................................................................................................................. 51
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