Replacement Of Insulators; Hollow Insulators With Arcing Chamber. Fig; Insulator For Fuse-Base And Quick Make Earthing Switch - ABB NAL Series Installation And Operating Instructions Manual

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20.0 Replacement of insulators

1 2
A
B
C
D
15 [Nm]
(standard DMC
and epoxy insulators)
E
F
—
G 113 Tightening torque for screws NAL/VR 12/17,5/24
1
A
H
Standard Tolerances for Machining and Forming
PROPRIETARY AND SECRET INFORMATION
Coord. punching N.C.Mach.
and unfold JS11 The information contained in this document has to be kept strictly confidential.
Any unauthorized use, reproduction, distribution or disclosure to third parties
X
f m c v is strictly forbidden. ABB reserves all rights regarding Intellectual Property Rights.
ISO 2768 T.1 Lengths and Angle Thread Quality Tolerance
X
"6g-6H" ISO 965
ISO 2768 T.2 Geometrical Tolerances H K L © Copyright 2016 ABB. All rights reserved.
1 2
B
C
15 Nm
D
—
1
114 Tightening torque for screws NAL/VR 12/17,5/24
A
E
B 1
C
15 Nm
E
—
115 Support insulators
F
G
3 4 5 6
15 [Nm]
(DMC insulators
with inserts)
40 [Nm]
+
D
2 3 4
15 Nm
3 4 5 6
2 3 4
Material
Surface code
Type
Revision
4.2
Drawn
Checked
Approved
2 3 4
4.1
4.3
7 8 9 10

20.1 Hollow insulators with arcing chamber. Fig.

113
_
WARNING!
These operations shall be carried out by
authorised ABB service only!
1. Unscrew 3.9 and detach the insulator.
2. Attach the new insulator to the frame by the
two self-tapping screws in case of DMC
/ 10%
(BMC) insulators or standard metric screws
-
in case of epoxy insulators. Remember to
5 6 7 8
mount the piston with piston rod 3.10. For
Material
Surface code
Type Derived from Drawing status
Marketing documentation
correct torque see Fig. 114.Note the washer
Revision EC No. Responsible
Title
PLABB Post insulator with contact knife
Location Date Name complete NAL 17,5/24kV 630A
Drawn PL-PSY 2019-08-27 C. Nożyński
Subtitle
PL-PSY 2019-08-27 A. Sypniewski NAL
Checked
and spring washer for the screws.
Approved PL-PSY 2019-08-27 P. Spalitabaka
ABB Switzerland Ltd
Drawing No.
1YMX000271M0136
Group Technology Management
7 8 9 10
20.2 Insulator for fuse-base and quick make
15 Nm
earthing switch
_
WARNING!
5
These operations shall be carried out by
authorised ABB service only!
A
Weight
Surface
Derived from Drawing status
EC No. Responsible
Title
PLABB
Location Date Name
PL-PSY M. Mańkowski 1. Unscrew 4.2 and detach the fuse clips and
Subtitle
ABB Switzerland Ltd
Drawing No.
contact block respectively.
Group Technology Management
5 6 7 B 8
2. Unscrew 4.3 at the base of the insulator and
detach the insulator.
3. Attach the new insulator to the frame by the
C
two self-tapping screws in case of DMC
(BMC) insulators or standard metric screws
in case of epoxy insulators 4.3. For correct
15 Nm
torque see Fig. 115. Note the washer and
D
spring washer for the screws.
4. Attach the fuse clips and contact block
respectively to the top of the insulator by the
screws 4.2. For correct torque see Fig. 115
F
G
11
A
B
C
D
E
F
G
Weight
Surface
A
Scale
1:2
Language
H
EN
Format
A2
Sheet No.
1 / 1
11
B
C
D
E
Scale
1:3
Language
EN
Format
A3
Sheet No.
1 / 1
57
D