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ABB UC Series User Manual
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31
1ZSE 5492-129 en, Rev
. 6
3. Repairs and adjustments
Distance screw
L = 20 mm
Distance screw
L = 10 mm or 35 mm
Multi-position switch
T
ransparent cover
Shaft
Upper coupling half
Bottom place
Sliding bearing
T
orque disc
Lower coupling half
Contact arm
Fig. 10. Multi-position switch for BUL.
30
32
Table of Contents
Default Chapter
7
Table of Contents
7
1 Introduction
9
General
9
Repair Categories
9
Serial Number
11
Spare Parts List
11
Maintenance Guide
12
Tightening Torque
12
2 Trouble-Shooting
13
On-Load Tap-Changer
13
Pressure Relay
14
Motor-Drive Mechanism
15
Control System
15
Power System
17
Miscellaneous
17
3 Repairs and Adjustments
22
Replacement of Gear Box on the On-Load Tap-Changer or Replacement of O-Rings for the Gear Box
22
General
22
Tools Required
22
Material and Spare Parts Required
22
Procedure
23
Replacement of Diverter Switch Housing Cover Gasket
27
General
27
Tools Required
27
Material and Spare Parts Required
27
Procedure
27
Restoring the Gas Cushion
28
General
28
Equipment Required
28
Procedure
28
Replacement or Addition of a Multi-Position Switch (BUL Only)
30
General
30
Tools Required
30
Procedure
30
Examination of the Diverter Switch after a Pressure Relay Trip
32
Tools and Material Required
32
Procedure
32
Tests of the Pressure Relay
33
Replacement of Pressure Relay
34
General
34
Tools Required
34
Spare Parts Required
34
Procedure
34
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Maintenance Guide
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ABB UC Series Specifications
General
Brand
ABB
Model
UC Series
Category
Industrial Equipment
Language
English
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