ABB LF121085-D Manuals

Manuals and User Guides for ABB LF121085-D. We have 1 ABB LF121085-D manual available for free PDF download: Installation And Commissioning Manual

ABB LF121085-D Installation And Commissioning Manual

ABB LF121085-D Installation And Commissioning Manual (84 pages)

Transformer Bushing

Brand: ABB | Category: Industrial Equipment | Size: 11.66 MB

Table of Contents

Table of Contents
3
Safety
5
Levels of Safety Risks
5
Hazardous Working Situations
6
Safety Precautions
6
Competence Level
6
Product Description
7
Design
7
Technical Specifications
10
General Specifications
10
Mechanical Loading
11
Delivery
13
Incoming Inspection
13
Transportation
13
Storage
13
Lifting
14
Lifting the Transport Box
14
Lifting the Bushing out of the Transport Box
15
Installation
19
Tools
19
Consumables
19
Preparations
20
Installation of Lifting Tools
20
Lifting the Bushing for Installation on the Transformer
22
Installation at the Transformer Factory
24
Removal of the Lower Draw Rod with Bottom Contact from the Bushing
24
Installation of the Small Bottom Contact (N1=4) in the Transformer
27
Installation of the Large Bottom Contact (N1=6) in the Transformer
29
Installation of the Bushing on the Transformer
31
Installation of the Bushing with the Fixed Bottom Contact
34
Installation at Site
36
Preparations at Site
36
Installation of the Bushing on the Transformer at Site
39
Hydraulic Tightening of the Draw-Rod Nut
45
Minimum Oil-Level in Transformer
49
Installation of the Outer Terminal
49
Grounding of the Bushing Flange
52
Commissioning
53
Waiting Time before Energization
53
Recommended Test before Energization
54
Overview
54
Tightness Test between Transformer and Bushing Flange
54
Tightness Test of Bushing Outer Terminal
54
Measurement of Capacitance and Dissipation Factor
55
Measurement of Through-Resistance
58
Maintenance
59
Recommended Maintenance
59
Checking the Oil-Level
61
Taking Oil Samples
62
Re-Packing
65
Removal of the Bushing from the Transformer, Draw Rod
65
Removal of the Bushing from the Transformer, Fixed Bottom Contact
68
Re-Packing of the Bushing
71
Spare Parts and Special Tools
73
Summary
73
Spare Parts
73
Special Tools
75
Disposal and Environmental Information
79
Overview
79
Disposal and Recycling
79
References
81
Summary
81
Appendix
83
Measurement Record
83

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