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GOE Series
ABB GOE Series User Manual
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Installation
and
commissioning
guide
2750
515-1
EN,
REV
.
14,
2020-06-26
39
4.6.4
Installation
of
the
bushing
on
the
transformer
Overview
It
is
important
to
install
the
draw
rod
correctly
,
thus
the
ends
of
the
draw
rod
parts
must
make
contact
at
(67).
G006788
CAUTION!
Do
not
disassemble
the
joints
(52),
these
are
correctly
assembled
and
locked
with
tread-locking
fluid
by
ABB.
Procedure
1.
Connect
the
upper
draw
rod
(35)
to
the
lower
draw
rod
(4).
G005038
38
40
Table of Contents
Default Chapter
3
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 Specification
12
General Specifications
12
Mechanical Loading
12
Delivery
15
Incoming Inspection
15
Transportation
15
Storage
15
Lifting
16
Lifting the Transport Box
16
Lifting the Bushing out of the Transport Box
17
Tools
19
Consumables
19
Preparations
20
Lifting the Bushing
20
Oil-Filling of the Bushing for Horizontal Installation
22
Horizontal Installation of the Bushing on the Transformer
24
Installation with Draw Lead
26
Calculation of the Length of the Draw Lead
26
Installation with Draw Lead
27
Installation with Draw Rod at Transformer Factory
32
Removal of the Lower Draw Rod with Bottom Contact from the Bushing
32
Installation of the Small Bottom Contact (N1=4) in the Transformer
35
Installation of the Large Bottom Contact (N1=6) in the Transformer
37
Installation of the Bushing on the Transformer
39
Installation with Draw Rod at Site
43
Preparations at Site
43
Installation of the Bushing on the Transformer at Site
46
Hydraulic Tightening of the Draw-Rod Nut
49
Manual Tightening of the Draw-Rod Nut
53
Minimum Oil-Level in Transformer
55
Installation of the Outer Terminal
55
Grounding of the Bushing Flange
58
5 Commissioning
61
Waiting Time before Energization
61
Recommended Test before Energization
62
Overview
62
Tightness Test between Transformer and Bushing Flange
62
Tightness Test of Bushing Outer Terminal
62
Measurement of Capacitance and Dissipation Factor
63
Measurement of Through-Resistance
66
Maintenance
67
Recommended Maintenance
67
Checking the Oil-Level
69
Taking Oil Samples
70
Re-Packing
73
Removal of the Bushing from the Transformer, Draw Rod
73
Removal of Horizontally Installed Bushings
76
Re-Packing of the Bushing
78
Spare Parts and Special Tools
79
Summary
79
Spare Parts
79
Special Tools
81
Disposal and Environmental Information
83
Overview
83
Disposal and Recycling
83
References
85
Summary
85
Appendix
87
Measurement Record
87
5
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ABB GOE Series Specifications
General
Brand
ABB
Model
GOE Series
Category
Industrial Equipment
Language
English
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