ABB BUE Podręcznik konserwacji - Strona 7
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1. Introduction
1.1 General
The motor-drive mechanisms, types BUE and BUL2,
manufactured by ABB, have been developed over many years
to provide maximum reliability. The simple and robust design
gives a service life equal to the service life of the transformer.
Minimum maintenance is required for trouble-free operations.
The motor-drive mechanism is attached to the transformer
tank and connected to the on-load tap-changer by means of
drive shafts and a bevel gear.
1.2 Design
The design and layout of the motor-drive mechanisms are
shown in Figs. 1 and 2 (BUE) and Figs. 3 and 4 (BUL2).
1.3 Legend
Towards motor-drive upper limit
Towards motor-drive lower limit
LOCAL control
REMOTE control
1ZSC000498-ABH en, Rev. 1 | Maintenance guide BUE/BUL2 7