ABB VUBB User Manual

Also see for VUBB: Installation and commissioning guide User guide

ABB VUBB User Manual Manual pdf 20 page image

20 User’s guide VUBB | 1ZSC000562-AAL enFig. 31. The bevel gear can be turned 360°.3.6 Mounting of external drive shaftsThe external drive shafts consist of square tubes. They mustbe connected to the spherical shaft ends of the bevel gearand the motor-drive mechanism by means of two couplinghalves.The bevel gear can be turned so that the horizontal shaft forthe motor-drive mechanism is in correctly positioned. See Fig.31. The limit for turning depends on the arrangement of theaccessories, but the shaft can be at any angle.CAUTIONBefore mounting shafts and couplings, all parts mustbe cleaned and greased to ensure correct function.Let the parts of the shaft system that should bedismantled before transporting the transformerto the site keep their identification numbersaccording to the packing list to simplify theremounting of the shaft system on site.The tubes around shafts and couplings are forprotection.3.6.1 Mounting of horizontal drive shaft1. Make sure that inclination of the shaft is less than 4°.(4° = 70 mm for every 1000 mm of shaft length.)Protective tubes with slotted ends must be used.Make sure that the slots on the protective tubes arefacing downwards.Removal and inspection of the couplings must bepossible when one of the tubes is pushed into theother.2. Fit two coupling halves on one end of the shaft. SeeFig. 32.3. Fit six screws and washers in the holes on the couplinghalves. See Fig. 33.Fig. 32. Fit two coupling halves on the square shaft.Fig. 33. Fit screws and washers to the coupling halves.