Sediver composite
line post insulators
ANSI USA/Canada
2010
This catalog presents a selection of the Sediver composite Line Post insulators answering the needs of North-American
customers in term of standards (ANSI), current practices and environmental conditions. ANSI standard C29.17 sets the
basic and minimum requirements for this type of insulator. Sediver composite insulators meet and exceed the performance
requirements of ANSI standards.
Sediver composite insulators in North America
Sediver introduced composite insulators in 1975, after a 10-year research and development program. The dependability
of the Sediver design has been demonstrated by the excellent performance of nearly 5 million polymer insulators now
installed worldwide at voltages from 15 kV to 735 kV.
Experience records in the U.S. and world-wide confirm that Sediver composite insulators have proven to perform extremely
well over the last 30 years.
Some customers* of Sediver composite insulators in the U.S.A and Canada
Alabama Electric Coop, Andalusia, AL - Alabama Power Co, Birmingham, AL - Appalachian
Power Co, - Arizona Public Service Co, AZ - Austin (City of), Austin, TX - Baltimore
Gas & Electric, Baltimore, MD - Big Rivers Electric, Henderson, KY - Bonneville Power
Administration, Portland, OR - Carolina Power & Light, Raleigh, NC - Central Illinois Public
Service, Springfield, IL - Central Power & Light, Corpus Christi, TX - Commonwealth
Edison Co, IL - Connecticut Light & Power, CT - Delmarva Power & Light, Wilmington,
DE - Delmarva Power Co, MD - Detroit Edison, Detroit, MI - Douglas Country PUD,
Washington, WA - Empire Electric District, Joplin, MO - Florida Power & Light, Miami, FL Georgia Power, Atlanta, GA - Grant County PUD - Houston Light & Power, Houston, TX Idaho Power, Morristown, NJ - Imperial Irrigation District Iowa-Illinois Gas & Electric, IL Jersey Central, Power & Light Morriston, NJ - Kansas City Power & Light, KS - Kansas City
Public Utility Board, KS - Kansas Gas & Electricity, KS - Kansas Power & Light, KS - Knoxville
Utilities Board, TN - Los Angeles Dept of Water & Power, Los Angeles, CA - Midway Sunset
Co-Generation, CA - Minnkota Power Coop, Mississippi Power & Light, MS - Mississippi
Power Co, MS - Nebraska Public Power District, Colombus, NB - Nevada Power Co, NV New England Power Co - New York State Electric & Gas, NY - Niagara Mohawk Power Co, North Virginia Electric Coop, VA - Northern Indiana Public Service, IN - Northern States
Power Co, Ohio Edison Company, OH - Otter Tail Power Company, - Pacific Gas & Electric,Pacific Power & Light, Portland, OR - Pensylvannia Power Co, Allentown, PA - Philadelphia
Electric - Public Service Electric & Gas, Newark, NJ - Public Service of Colorado, Denver,
CO - Public Service of Indiana, IN - Public Service of New Hampshire, NH - Public Service
of New Mexico, NM - Public Service of Oklahoma, OK - Puget Sound Power & Light, San Antonio {City of}, Public Serv, Bd, Tx San Diego Gas & Electric, Sierra Pacific
Power Company, - South Carolina Electric & Gas, SC - South Mississippi Power Assoc,
MS Southern California Edison, CA - Southwestern Electric Power Co, - Southwestern
Public Service, Tacoma {City of}, Washington, WA - Tampa Electric, Tarheel Electric
Membership Association, - Tennesse Valley Authority, Chattanooga, TN - Tri-State
Generation & Trans, Ass, - Union Electric Co, St Louis, MO - United Power Association, Elk
River, - Utah Power & Light, Salt Lake city, UT - West Penn Power, - Western Area Power
Adminis, - Winfield {City of}, Kansas, KS - Wisconsin Electric Power, WI - Wisconsin Power
& Light, WI - Wisconsin Public Service, WI - USA
Alberta Power, BC Hydro, Enmax, Hydro Québec, Hydro One, Manitoba Hydro,
Newfoundland Hydro, NB Power, Sask Power - Canada
* Some of the companies above are now part of new entities
Sediver today
The SEVES group is a world leader in the power insulator industry, specialized in composite, toughened
glass and porcelain insulators for high voltage transmission lines and substations.
Sediver is part of the Seves group and has been specialized for the last 60 years in the field of high
voltage toughened glass and polymer insulation. More recently, composite surge arresters have been
added to our product range.
Today Sediver’s global presence is assured by:
manufacturing facilities located in South America (Brazil), Europe (Italy) and the Far East (China). Each facility is ISO
9001-2000 certified and is governed by the same quality assurance programs and organization. This ensures that all
Sediver insulators are manufactured with the same design, following the same methods and procedures in order to
supply insulators to our worldwide clients with the same level of high quality.
centralized technical resources located in France, including Research and Development and Customer Technical Support
as well as high voltage laboratories.
a large and widespread commercial network ensuring timely assistance to customers in the execution of their projects.
The sales offices for North America are based in Tiffin (OH), USA and Montreal, Canada, with regional representatives
covering all of the North American territory.
Quality driven organization and staff
Ideally, an insulator once installed, should be maintenance free and forgotten by the operator of the line for several
decades. Sediver contributes to achieving this goal by placing quality at all levels of the organization and at the forefront
of the actions undertaken by all personnel. The Sediver quality system covers all products and activities from the design,
manufacturing, testing and supply, up to after-sales service.
Quality of products
Each factory quality organization is coordinated through a centralized Quality Department who acts as the client’s
representative in determining and assuring full compliance of the manufactured insulators with the highest standards.
Each quality department has absolute authority to ensure that the overall quality policy is enforced and respected at all
levels of operations.
Quality of technical support
A team of skilled engineers operating in our Product Engineering Dept are dedicated to providing solutions to customers
in the field of high-voltage insulation and protection. Their know how is based on 60 years of experience, testing and
research carried out in state of the art laboratories using cutting edge technology in the fields of material science and
mechanical and HV testing, including pollution testing and 3D electrical and mechanical simulations.
Sediver unique combination between design features ...
Sediver « Impenetrable » design proven dependability
All Sediver composite insulators are manufactured at high
pressure and high temperature thanks to direct injection
molding technology. This unique “impenetrable” housing
design safely protects the fiberglass rod against water or
contaminant penetration without the need of any “seals”.
Injection molding technology has been adopted and
continuously perfected by Sediver since 1985.
is defined by the method of construction of the housing.
In this regard, internal tracking and moisture penetration
are known to be the main actors for failures in service. To
prevent such risks, Sediver's housing is directly injected
at high temperature and high pressure on the fiberglass
rod and the fittings, assuring a complete adherence and
strong bonding of the rubber.
The Sediver state-of-the-art insulator is made with
the most advanced materials, resulting from extensive
research testing and field experience gained over more
than 50 years of expertise in overhead line insulation.
The perfect bonding between rod and housing will not
allow any development of internal tracking under the
housing. The complete adherence of the rubber on to
the end fitting enlarged collar eliminates the need for
inherently weak sealing devices responsible for moisture
ingress, and subsequently brittle fractures. The housing
being totally “impenetrable” will also prevent possible
moisture penetration along the core.
Field experience has clearly demonstrated that
composite insulator's performance and degradation
is directly related to some key design features.
One of them, (provided material selection is adequate),
End fitting attached to rod by compression crimping process which is
acoustically monitored to ensure consistent performance
Mechanical ratings and definitions
Sediver line post insulators are available with core
diameter of 1.75" to 3.5". Applications curves taking into
account tri-dimensional loading are available upon
request.
Injected housing moulded directly to the rod and the fittings forming an
impenetrable protective housing
Long term performance
The direct injection molding process used by Sediver
offers a unique quality of interface between the rod and
the housing as well as between the end fitting and the
housing.
Making the insulator fully “impenetrable”, this feature
also offers unparallel quality of bonding along the
rod preventing any risk of internal tracking along the
longitudinal interface of the composite insulator.
Specified Cantilever Load (SCL): cantilever load rating
when tested in accordance with ANSI C29.17-2002.
Specified Tensile Load (STL): tensile load rating when
tested in accordance with ANSI C29.17-2002.
Maximum Design Cantilever Load (MDCL):
maximum cantilever load which causes no damage on the
insulator. It is set at 50% of SCL.
Bonded interface between rubber and metal fitting - no seals
and manufacturing process
Materials
Housing material
Sediver line post insulators are available either with EPDM
or with silicone rubber housing.
• EPDM compound has been specially formulated to
provide optimum weathering and electrical properties for
all operating conditions.
Sediver has more than 30 years of excellent field
experience with EPDM insulators over a wide range of
pollution levels.
• Silicone compound provides excellent hydrophobic and
recovery characteristics which limit leakage current and
arcing in polluted or seacoast environments.
Both Sediver rubber formulations are the result of
extensive research and testing programs.
Core: pultruded rods made by impregnation of high
quality fiberglass with epoxy resin.
End fittings: hot dip galvanized steel, ductile or
malleable cast iron for applications under severe
environmental conditions.
Bases: hot deep galvanized rolled steel for bendable
bases and ductile or malleable cast iron or steel for rigid
bases.
Grading rings:
• high grade aluminum alloy for the ring
• hot dip galvanized steel for the bracket and supporting horn
• stainless steel for bolts and nuts
Galvanized end fittings designed to reduced the E-field and provide a large
surface rubber bonding
Grading rings
Fiberglass reinforced epoxy resin rod
At higher operating voltages, grading rings are necessary
to reduce the voltage gradient on and within the
insulator, and to reduce radio noise to acceptable levels.
As on ceramic strings, the need for grading rings also
depends on admissible hardware design, conductor
bundle position, altitude and contamination conditions.
General recommendations for Sediver line post insulators
used in non-contaminated and low altitude (<3000’) areas
are:
Recommendations
Interface integrity monitoring
3.0" & 3.5"
series 35 & 40
Line end Tower end
Line end Tower end
Line voltage
The longitudinal interface along the fiberglass rod and
the rubber housing is highly critical in regard to risks of
internal tracking if this interface is not perfectly bonded.
Thanks to the injection molding process, the Sediver design
offers the strongest possible bonding and adherence
between these two components.
2.5"
serie 30
(1)
230 kV
X(1)
345 kV
X
500 kV
X
X
X
X
X
No grading ring required for braced line post
Additionally, Sediver designed an exclusive non destructive
testing method based on ultrasonic techniques to validate,
on a sampling basis, the quality of this interface.
This control performed on finished products ensures the
highest level of dependability of our polymer insulators.
Grading ring diameter 15.4" (390 mm)
Sediver composite line post insulators
1.75” (44mm)
SERIES 20
End fittings
Line end
0.77" MAX (19.5mm)
Ø 0.97" MIN (24.6mm)
Ø13/16"
(20.6mm)
K*
V*
T
*to be used with trunnion clamps as per ANSI C29.7
Pole end
Trunnion clamps
3/4"- 10UNC
or
7/8"- 9UNC
3.3"(85mm)
P
Catalog N°
Conductor range (inches)
ACTS 45-25-57
0.25-0.57
ACTS 45-5-106
0.50-1.06
ACTS 106-150
1.00-1.50
Bases type G
Horizontal Gain
GB-12
Vertical Gain
V8-08
for round poles 7" to 10" (178 to 254 mm)
D
Mounting studs
A
B
C
ØD
B
A
B
ØD
A
A
C
Base
C
Slot 0.69"x 1.08"
(17.5mm x 27.5mm)
Slot 0.81"x 3.3"
(20.6 x 84mm)
A
B
B
C
D
A
B
C
Stud
Ref.
In
mm
In
mm
In
mm
SS-1
1.8
46
1.56
40
0.75
19
22
In
mm
In
mm
In
mm
In
mm
SS-2
2.0
51
1.56
40
0.88
GB-12
9.5
241
12
305
-
-
0.94
23.8
SW-1
7.56
192
4.0
102
0.75
19
VB-08
5
127
3
76
13.1
333
0.69
17.5
SW-2
8.07
205
4.0
102
0.88
22
Sediver composite line post insulators
1.75”(44mm)
SERIES 20
x
1.5"
(38.5mm)
Rev 8-10
x
x
5°
Ø 5.78"
( Ø147 mm)
NPVN20
Typical
Line
Voltage
NPKN20
Sediver
Catalog
Designation
Number
of
Sheds
Line Post
Spacing
“X”
Inches
(mm)
Inches
(mm)
20.6
522
20.6
522
22.0
558
22.0
560
22.0
560
23.5
596
25.1
637
25.1
637
26.5
673
26.6
676
26.6
676
28.0
711
28.1
714
28.1
714
29.5
750
31.1
791
31.1
791
32.5
826
32.7
830
32.7
830
34.1
865
37.9
962
37.9
962
37.9
962
42.7
1085
42.7
1085
42.7
1085
52.4
1331
52.4
1331
52.4
1331
57.2
1453
57.2
1453
57.2
1453
62.0
1576
62.0
1576
62.0
1576
71.7
1822
71.7
1822
71.7
1822
76.5
1944
76.5
1944
76.5
1944
14.3
363
14.3
363
14.3
363
15.8
401
15.8
401
15.8
401
18.8
478
18.8
478
18.8
478
20.4
517
20.4
517
20.4
517
21.9
555
21.9
555
21.9
555
24.9
632
24.9
632
24.9
632
26.4
671
26.4
671
26.4
671
8
SEDNPKG20 XH9 008 S0
44 kV
SEDNPVN20 XH9 009 S0
SEDNPKN20 XH9 009 S0
9
SEDNPKG20 XH9 009 S0
SEDNPVN20 XH9 011 S0
SEDNPKN20 XH9 011 S0
11
SEDNPKG20 XH9 011 S0
SEDNPVN20 XH9 012 S0
69 kV
SEDNPKN20 XH9 012 S0
12
SEDNPKG20 XH9 012 S0
SEDNPVN20 XH9 013 S0
SEDNPKN20 XH9 013 S0
13
SEDNPKG20 XH9 013 S0
SEDNPVN20 XH9 015 S0
SEDNPKN20 XH9 015 S0
15
SEDNPKG20 XH9 015 S0
88 kV
SEDNPVN20 XH9 016 S0
SEDNPKN20 XH9 016 S0
Dry Arcing
Distance*
Inches
(mm)
SEDNPVN20 XH9 008 S0
SEDNPKN20 XH9 008 S0
Leakage
Distance
16
SEDNPKG20 XH9 016 S0
NPKG20
Low
Frequency
Flashover *
Critical
Impulse
Flashover *
Dry
kV
Wet
kV
Pos.
kV
Neg.
kV
165
120
255
395
165
120
255
395
165
120
255
395
180
135
275
425
180
135
275
425
180
135
275
425
210
160
315
490
210
160
315
490
210
160
315
490
225
175
335
515
225
175
335
515
225
175
335
515
240
190
355
545
240
190
355
545
240
190
355
545
265
215
395
590
265
215
395
590
265
215
395
590
280
230
435
605
280
230
435
605
280
230
435
605
Max. Design
Cantilever
Load
Approx.
Net Wt
Lbs
(kN)
Lbs.
(kg)
1450
6.5
1450
6.5
1360
6
1350
6
1350
6
1270
5.7
1190
5.3
1190
5.3
1130
5
1120
5
1120
5
1070
4.8
1060
4.7
1060
4.7
1010
4.5
960
4.3
960
4.3
920
4.1
910
4.1
910
4.1
880
3.9
11
5
11
5
19
8.6
12
5.3
12
5.3
19
8.8
13
5.8
13
5.8
21
9.4
13
6.1
13
6.1
21
9.6
14
6.4
14
6.4
22
9.9
15
6.9
15
6.9
23
10.5
16
7.2
16
7.2
24
10.7
Stud
Ref.
SS-1
or
SW-1
3/4"
SS-2
or
SW-2
7/8"
Tests complying with ANSI C29.17. Table shows typical models. Other dimensions or fittings combinations are available on request.
STL: Clamp top 5,000 Lbs (22 kN) - Tongue 10,000 Lbs (44 kN)
Sediver designation system
SED
Sediver
design
N
ANSI
Standard
P1 K2 G3
20
End fitting and base
Core size series
1-Pole end
2-Line end
3-Base type: G-Gain, N-No base
XH9
Shed
profile
012
Number
of sheds
S
Housing material
S - Silicone
E - EPDM
0
Number of
grading rings
Sediver composite line post insulators
2.5” (63mm)
SERIES 30
End fittings
Line end
1.5"
(38mm)
4" (101.6mm)
Ø1"
(25.4mm)
1.7"
(43mm)
Ø13/16"
(20.6mm)
SLOT 1"X 1.5"
(25.4x38mm)
K(*)
V(*)
0.75"
(19mm)
Ø0.8"
(20.4mm)
1.3"
(33mm)
3" (76mm)
0.75"
(19mm)
S
T
C
0.67"
(17mm)
3.7" (95mm)
1.7"
(43mm)
3.7"
(95mm)
0.67"
(17mm)
Pole end
Ø6.1" (155mm)
Ø5" BCD
(127mm)
Ø.94"
(24mm)
Ø5" BCD
(127mm)
Ø0.8"
(20.4mm)
1.3"
(33mm)
Ø6.1" (155mm)
2"
(51mm)
Ø11/16" (17.5mm)
Ø11/16" (17.5mm)
B(**)
P
C
(*)to be used with trunnion clamps as per ANSI C29.7
Bases
Bendable gain
BG01 or BG55
G or L
Rigid gain
EG127
G D1
D1
P
(**)to be used with bendable bases
Rigid flat
EF127
F
Bendable flat
BF02
F
C
C
D1
A
Ø1
D2
Ø1
Ø2
Ø2
Type
G
L
F
A
Base
5XD1
A
B A
A
BG01
12
EG127
12
BG55
B A
D2
B
mm
B
1XD2
D2
A
In
Hinged
EC45
A D2
In
C
mm
In
Ø1
mm
Ø2
D1
D2 (Slot)
In
mm
In
mm
In
mm
In
mm
305
14
356
7
178
0.94
305
10
254
7
178
0.94
23.8
0.94x1.5
23.8x38
23.8
0.94x1.38
14
356
24
610
9
229
24x35
0.94
23.8
0.94x1.5
23.8x38
BF02
10
254
12
305
8
EF127
10
254
12
305
8
203
0.94
23.8
1x3
25.4x76
203
0.83
21
0.86x1.28
21.8x32
EC45
4
101.6
5
127
0.81x1.31
20.6x33.3
Sediver composite line post insulators
2.5”(63mm)
SERIES 30
Ø6.8"( Ø173mm)
12°
1.5"(38.5mm)
X
Typical
Line
Voltage
Sediver
Catalog
Designation
Number
of
Sheds
SEDNBSG30XH 016 S0
16
SEDNBSG30XH 019 S0
19
69-115 kV
SEDNBSG30XH 023 S0
23
115 kV
SEDNBSG30XH 025 S0
25
115-138
kV
SEDNBSG30XH 029 S0
29
138 kV
SEDNBSG30XH 034 S0
34
SEDNBSG30XH 039 S0
39
SEDNBSG30XH 043 S0
43
SEDNBSG30XH 047 S1
47
SEDNBSG30XH 051 S1
51
SEDNBSG30XH 055 S1
55
SEDNBSG30XH 058 S1
58
69 kV
161 kV
with grading
ring*
230 kV
Line Post
Spacing
“X”
Leakage
Distance
Inches
(mm)
Dry Arcing
Distance*
Inches
(mm)
Inches
(mm)
34.3
77
25.8
871
1958
657
38.7
92
30.4
984
2331
772
44.6
111
36.5
1134
2829
926
47.6
121
39.5
1210
3078
1003
53.5
141
45.6
1360
3575
1157
61.0
165
53.1
1549
4198
1350
68.4
190
60.7
1737
4820
1542
74.3
209
66.8
1887
5318
1696
80.2
229
68.4
2038
5815
1737
86.2
249
74.4
2189
6313
1891
92.1
268
80.5
2339
6811
2045
96.5
283
85.0
2452
7184
2160
Low
Frequency
Flashover *
Max. Design
Cantilever
Load
Critical
Impulse
Flashover *
Dry
kV
Wet
kV
Pos.
kV
Neg.
kV
275
225
425
595
320
265
495
670
375
315
585
760
400
335
635
800
455
385
725
885
520
445
835
985
585
500
950
1080
635
545
1040
1155
645
555
1060
1175
695
600
1150
1245
745
640
1240
1315
785
670
1305
1370
Approx.
Net Wt
Lbs
(kN)
Lbs.
(kg)
2630
56
11.7
25.6
2260
60
10.1
27.1
1900
64
8.5
29.0
1770
66
7.9
30.0
1540
71
6.8
32.0
1330
76
5.9
34.5
1170
82
5.2
37.0
1070
86
4.8
39.0
990
96
4.4
43.4
920
100
4.1
45.4
850
104
3.8
47.3
810
108
3.6
48.8
Tests complying with ANSI C29.17. Table shows typical models. Higher voltages and other dimensions or fittings combinations are available on request.
STL: Clamp top 5,000 Lbs (22 kN) - Other fittings 15,000 Lbs (67 kN).
*When grading rings are included in the designation, the electrical values and dry arcing distances are given accordingly.
Sediver designation system
SED
Sediver
design
N
ANSI
Standard
P1 K2 G3
End fitting and base
2-Line end
30
XH
034
S
0
Core size series
Shed
profile
Number
of sheds
Housing material
S - Silicone
Number of
grading rings
1-Pole end
3-Base type: G-Gain, L-Gain Long, F-Flat,
E - EPDM
A-Hinged, N-No base
Sediver composite line post insulators
3.0”(76 mm)
SERIES 35
End fittings
1.7"
(43mm)
Ø0.8"
(20.4mm)
1.3"
(33mm)
(Ø 6.7" 170mm)
Ø5" BCD
(127mm)
Ø5/8" 11UNC
Ø13/16"
(20.6mm)
K(*)
C
1.77"
(45mm)
Line end
4" (101.6mm)
3"(76mm)
SLOT 1"X 1.5"
(25.4x38mm)
1"
(25.4mm)
S
A
Pole end
1.7"
(43mm)
Ø1.37"
(35mm)
Ø5" BCD
(127mm)
Ø0.8"
(20.4mm)
1.3"
(33mm)
5.5"
(140mm)
1.77"
(45mm)
(Ø 6.7" 170mm)
5.5" (140mm)
2.95"
(75mm)
Ø5/8" 11UNC
C
B(**)
A
(**) to be used with bendable bases
(*)to be used with trunnion clamps as per ANSI C29.7
Bases
Bendable gain
G
Bendable flat
F
for round poles Ø 10" to 23" (254 to 584 mm)
Hinged
A
D2
D
D1
C
D1
A
B A
B A
D2
D3
10
Type
Base
G
F
A
A
B
In
mm
BG40
14
356
BF40
13
EC45
4
D2
C
D
D1
In
mm
In
mm
In
mm
330
16
406
9
229
10
254
101.6
5
127
D2 (slot)
In
mm
In
mm
1.06
26.9
1.06x2.56 26.9x65
1.06
26.9
1.06x2.56 26.9x65
0.81x1.31 20.6x33.3
D3 (slot)
In
mm
0.94x2.52 23.8x64
Sediver composite line post insulators
3.0”(76 mm)
SERIES 35
Ø6.9"(Ø176mm)
1.5"(38.5mm)
12°
X
Typical
Line
Voltage
Sediver
Catalog
Designation
Number
of
Sheds
69/115 kV
SEDNBSG35 XI 021 S0
21
115 kV
SEDNBSG35 XI 023 S0
23
115/138 kV
SEDNBSG35 XI 027 S0
27
138 kV
SEDNBSG35 XI 032 S0
32
SEDNBSG35 XI 037 S0
37
SEDNBSG35 XI0 41 S0
41
SEDNBSG35 XI 044 S0
44
SEDNBSG35 XI 048 S0
48
SEDNBSG35 XI 052 S0
52
SEDNBSG35 XI 055 S0
55
SEDNBSG35 XI 058 S0
58
Line Post
Spacing
“X”
161 kV
230 kV
Inches
(mm)
Leakage
Distance
Inches
(mm)
Dry Arcing
Distance*
Inches
(mm)
45.2
99
33.3
1148
2518
846
48.2
108
36.3
1224
2756
923
54.1
127
42.4
1374
3232
1077
61.5
151
50.0
1563
3827
1270
68.9
174
57.6
1751
4422
1462
74.9
193
63.6
1902
4898
1616
79.3
207
68.2
2015
5255
1732
85.2
226
74.2
2165
5731
1886
91.2
244
80.3
2316
6207
2040
95.6
258
84.8
2429
6564
2155
100.1
272
89.4
2542
6921
2271
Low
Frequency
Flashover *
Critical
Impulse
Flashover *
Dry
kV
Wet
kV
Pos.
kV
Neg.
kV
345
285
540
710
370
310
585
755
425
360
675
840
490
420
790
945
555
475
905
1040
605
520
995
1120
645
555
1060
1175
695
595
1150
1245
745
640
1235
1315
780
670
1300
1365
820
700
1370
1415
Maximum
Design
Cantilever Load
Approx.
Net Wt
Lbs
(kN)
Lbs.
(kg)
2920
56
13
25.2
2740
58
12.2
26.4
2430
63
10.8
28.7
2140
70
9.5
31.7
1910
76
8.5
34.6
1760
81
7.8
36.9
1660
85
7.4
38.6
1550
90
6.9
41.0
1450
95
6.4
43.3
1380
99
6.1
45.1
1330
103
5.9
46.8
Tests complying with ANSI C29.17. Table shows typical models. Higher voltages and other dimensions or fittings combinations are available on request.
STL: Clamp top 5,000 Lbs (22 kN) - Other fittings 15,000 Lbs (67 kN).
*When grading rings are included in the designation, the electrical values and dry arcing distances are given accordingly.
Sediver designation system
SED
N
Sediver
design
ANSI
Standard
P1 K2 G3
35
XI
032
S
0
End fitting and base
Core size series
Shed
profile
Number
of sheds
Housing material
S - Silicone
E - EPDM
Number of
grading rings
1-Pole end
2-Line end
3-Base type: G-Gain, F-Flat, A-Hinged, N-No base
11
Sediver composite line post insulators
3.5”(88 mm)
SERIES 40
End fittings
1.7"
(43mm)
Ø0.8"
(20.4mm)
1.3"
(33mm)
(Ø 6.7" 170mm)
Ø5" BCD
(127mm)
Ø5/8" 11UNC
Ø13/16"
(20.6mm)
K(*)
C
1.77"
(45mm)
Line end
4" (101.6mm)
3"(76mm)
SLOT 1"X 1.5"
(25.4x38mm)
1"
(25.4mm)
S
A
Pole end
1.7"
(43mm)
Ø1.37"
(35mm)
Ø5" BCD
(127mm)
Ø0.8"
(20.4mm)
1.3"
(33mm)
5.5"
(140mm)
1.77"
(45mm)
(Ø 6.7" 170mm)
5.5" (140mm)
2.95"
(75mm)
Ø5/8" 11UNC
C
B(**)
A
(**) to be used with bendable bases
(*)to be used with trunnion clamps as per ANSI C29.7
Bases
Bendable gain
G
Bendable flat
F
for round poles Ø 10" to 30" (254 to 762 mm)
Hinged
A
D2
D
D1
C
D1
A
B A
B A
D2
D3
12
Type
Base
G
F
A
A
B
In
mm
BG40
14
356
BF40
13
EC45
4
D2
C
D
D1
In
mm
In
mm
In
mm
330
16
406
9
229
10
254
101.6
5
127
D2 (slot)
In
mm
In
mm
1.06
26.9
1.06x2.56 26.9x65
1.06
26.9
1.06x2.56 26.9x65
0.81x1.31 20.6x33.3
D3 (slot)
In
mm
0.94x2.52 23.8x64
Sediver composite line post insulators
3.5”(88 mm)
SERIES 40
Ø7"(Ø178mm)
12°
1.5"(38.5mm)
X
Typical
Line
Voltage
Sediver
Catalog
Designation
115 kV
Number
of
Sheds
SEDNBSG40XV023S0
115-138 kV SEDNBSG40XV027S0
138 kV
23
27
SEDNBSG40XV032S0
32
SEDNBSG40XV037S0
37
161 kV
SEDNBSG40XV041S0
41
SEDNBSG40XV045S0
45
SEDNBSG40XV049S0
49
SEDNBSG40XV056S0
56
345 kV
SEDNBSG40XV069S1
69
500 kV
SEDNBSG40XV085S2
85
230 kV
Line Post
Spacing
“X”
Inches
(mm)
Leakage
Distance
Dry Arcing
Distance*
Inches
(mm)
Inches
(mm)
48.1
96
36.4
1221
2428
925
54.0
112
42.5
1371
2852
1079
61.4
133
50.1
1560
3382
1272
68.8
154
57.6
1748
3912
1464
74.8
171
63.7
1900
4336
1618
80.7
187
69.8
2049
4760
1772
86.6
204
75.8
2200
5183
1926
with
grading
ring*
97
233
86.4
2463
5925
2196
116.3
288
104.6
2953
7303
2657
140.0
354
121.8
3556
8998
3094
Low
Frequency
Flashover *
Critical
Impulse
Flashover *
Dry
kV
Wet
kV
Pos.
kV
Neg.
kV
370
310
585
755
425
360
680
420
790
945
555
475
905
1045
520
995
Approx.
Net Wt
Lbs
(kN)
Lbs.
(kg)
4110
110
845
490
610
Max. Design
Cantilever
Load
1120
660
565
1085
1190
710
610
1170
1265
795
680
1325
1385
940
800
1580
1580
1075
915
1760
1760
18.3
50
3660
116
16.3
52.8
3230
124
14.4
56.4
2890
132
12.8
60
2620
139
11.6
62.9
2410
145
10.7
65.7
2220
151
9.9
68.6
1960
162
8.8
73.6
1660
188
7.4
85.4
1420
219
6.3
99.3
Tests complying with ANSI C29.17 . Table shows typical models. Higher voltages and other dimensions or fittings combinations are available on request.
STL: Clamp top 5,000 Lbs (22 kN) - Other fittings 15,000 Lbs (67 kN).
*When grading rings are included in the designation, the electrical values and dry arcing distances are given accordingly.
Sediver designation system
SED
N
Sediver
design
ANSI
Standard
P1 K2 G3
40
XV
032
S
0
End fitting and base
Core size series
Shed
profile
Number
of sheds
Housing material
S - Silicone
E - EPDM
Number of
grading rings
1-Pole end
2-Line end
3-Base type: G-Gain, F-Flat, A-Hinged, N-No base
Packing
Sediver composite insulators are packed in wooden crates.
The inner part of the crate is lined with a plastic film to
avoid a direct contact of the polymeric housing with
the wood. Within the crate, each layer of insulators is
supported by wooden separators to avoid damage of the
insulator sheds, either from the weight of the insulators
stacked above or during shipping.
13
Sediver composite braced line post insulators and horizontal Vees
Braced line post
H
Pivoting horizontal Vee
H
L
L
V
V
50°- 60°
50°- 60°
X
X
Pivoting horizontal Vee with boomerang
H
Braced line posts are designed for applications similar
to a line post but with an added suspension insulator
or "brace" to increase the vertical load capacity of the
assembly.
L
V
50°- 60°
X
14
The pivoting horizontal Vee is similar to a braced line
post except that instead of a fixed base, it is equipped
with a hinged (pivoting) base thus preventing bending of
the post insulator, thereby increasing its axial compression
load capacity. This provides the horizontal vee assembly
with a large vertical load capacity. The hinged connections
allow it to efficiently redistribute unbalanced longitudinal
loads in the conductor (such as due to non-uniform ice
accumulation) and minimize torsional loads on the support
structure.
The mechanical performance of the pivoting horizontal
Vee can be further enhanced by the application of a
boomerang type fitting at the line end.
The boomerang will assure a concentric axial load in the
line post insulator under any loading condition (angle
structures, strong lateral wind, etc...).
Sediver composite braced line post insulators and horizontal Vees
Braced line post
Sediver
Catalog
Designation
Line Post
Designation
Brace
Designation
BLPG 115 3014 0001 S0
NBSG30XH25S0
NEE120XF039S0
BLPG 115 3014 0002 S0
NBSG30XH29S0
NEE120XF045S0
138 kV BLPG 138 3014 0001 S0
NBSG30XH34S0
NEE120XF055S0
BLPG 161 3014 0001 S1
NBSG30XH39S0
NEE120XF065S1
Typical
Line
Voltage
115 kV
with
grading
ring*
161 kV
BLPG 161 3014 0002 S1
NBSG30XH43S0
NEE120XF071S1
BLPG 230 3014 0001 S1
NBSG30XH51S0
NEE120XF085S1
BLPG 230 3014 0002 S1
NBSG30XH55S0
NEE120XF091S1
Line Post
Designation
Brace
Designation
230 kV
X
L
V
H
In
mm
In
mm
In
mm
In
mm
47.6
1209
53,5
1361
61.0
1549
68.4
53.9
1370
60.4
1535
71.2
1809
82.1
55.7
1416
60.1
1528
68.9
1750
79.2
2
51
2
51
2
51
2
1737 2085 2010
51
74.3
1887
86.2
2189
92.1
2339
2
51
2
51
2
51
88.6
2250
103.7
2634
110.2
2799
83.6
2123
95.5
2426
99.9
2538
Low
Frequency
Flashover*
Dry
kV
Wet
kV
Critical
Impulse
Flashover *
Pos.
kV
Neg.
kV
400
335
635
800
455
385
725
880
520
445
835
980
505
430
810
960
555
475
900
1040
655
560
1075
1185
690
590
1140
1240
Maximum
Approx.
Vertical
Net Wt
Load (1)
Lbs
(kN)
Lbs.
(kg)
11250
50
11250
50
9000
40
6750
80
36
86
39
92
42
106
30
48
5625
25
4050
18
3375
15
111
50
122
55
127
58
Pivoting horizontal Vee
Typical
Line
Voltage
Sediver
Catalog
Designation
PHVF 161 3014 0001 S1
NCSA30XH39S0 NEE120XF057S1
PHVF 161 3014 0002 S1
NCSA30XH43S0 NEE120XF063S1
PHVF 230 3014 0001 S1
NCSA30XH47S0 NEE120XF069S1
PHVF 230 3014 0002 S1
NCSA30XH51S0 NEE120XF075S1
PHVF 230 3014 0003 S1
NCSA30XH55S0 NEE120XF079S1
PHVF 230 3014 0004 S1
NCSA30XH58S0 NEE120XF083S1
161 kV
with
grading
ring*
230 kV
X
L
V
H
In
mm
In
mm
In
mm
In
mm
70.3 73.4
1786 1865
76.4 79.9
1940 2030
82.4 86.4
2094 2195
88.5 92.9
2248 2360
94.6 97.2
2402 2470
99.1 101.6
2517 2580
68.7
1744
72.2
1835
80.2
2038
83.9
2130
86.2
2190
88.2
2240
22
559
22
559
28
711
28
711
30
762
30
762
X
L
V
H
In
mm
In
mm
In
mm
In
mm
Low
Frequency
Flashover *
Dry
kV
Wet
kV
Critical
Maximum
Approx.
Impulse
Vertical
Net Wt
Flashover *
Load (1)
Pos.
kV
Neg.
kV
510
435
820
970
555
475
900
1040
610
525
1000
1125
660
570
1085
1195
705
605
1170
1260
745
640
1235
1315
Lbs
(kN)
Lbs.
(kg)
11250
50
11250
50
11250
50
11250
50
11250
50
11250
50
80
36
85
39
90
41
95
43
100
45
104
47
Pivoting horizontal Vee with boomerang
Typical
Line
Voltage
Sediver
Catalog
Designation
Line Post
Designation
Brace
Designation
with
grading
ring*
345 kV PHVB 345 3014 0001 S2 NCCA30XH69S0 NEE120XF097S1
500 kV PHVB 500 4014 0002 S4 NCCA40XV85S1 NEE180XF119S5
115.9 116.7 108.8 32
2945 2965 2765 813
134 50
141.8 141.7
3600 3598 3402 1270
Low
Frequency
Flashover *
Dry
kV
Wet
kV
Critical
Maximum
Approx.
Impulse
Vertical
Net Wt
(1)
Flashover *
Load
Pos.
kV
Neg.
kV
835
715
1400
1440
1020
870
1730
1690
Lbs
(kN)
Lbs.
(kg)
10125
45
11250
50
161
73
251
114
Test complying with ANSI C29.17 . Table shows typical models. Other dimension of fittings combinations are available upon request.
(*) When grading rings are included in the designation, the electrical values are given accordingly.
0.94"
(1) Maximum vertical load: with no longitudal or transversal stresses.
(24mm)
Application curves taking into account tridimensional loading are available upon request.
All assemblies above are equipped with two straight shackles, one at the tower end
and one connecting the brace to the line post.
Adjustable extension links or turnbuckles can be offered upon request in order to
match different vertical distances on the tower as well as customized design.
Ø0.79"
Ø(20mm)
4.45"
(113mm)
15
Contribution to international committees
Since the very beginning of international technical cooperation, Sediver has always been an active member in fields of
research and standardization in international committees and working groups dealing with all aspects of high voltage
insulation; for example Sediver experts are Project Leaders in IEC working groups 36WG11, 36BMT10...
List of some IEEE and international publications on
composite:
Institute of Electrical and
Electronics Engineers
• T&D Committee
Sediver’s
experts are
active in
“IEEE Guide for Braced Insulator Assemblies for Overhead Transmission Lines 60 kV and greater”
IEEE TF15.09.09.07 (E. DEL BELLO…) IEEE Transactions on Power Delivery, Vol.23 N°2, April 2008
p.785-791
«Determination of the brittle fracture process of field failed HV insulators» C. de TOURREIL ; G.
THEVENET ; E. BROCARD ; N. SIAMPIRINGUE ; N. PICHON – XIVth ISH , 2005 Paper D-28
«Use of corona rings to control the electrical field along transmission line composite insulators»
CIGRE WG B2-03 (E. BROCARD …) CIGRE TECHNICAL BROCHURE, 2005 N° 284
• WG Insulator
contamination
«Guide for the evaluation of composite line post insulators subjected to combined mechanical load
/ Guide pour l’évaluation des consoles isolantes composites soumises à une combinaison de charges
mécaniques « CIGRE WG 22-03 (E. BROCARD…) ELECTRA, 2002, N° 203
• WG Insulator strength
«Composite Insulator Handling guide» CIGRE WG 22-03 (E. BROCARD …) CIGRE TECHNICAL
BROCHURE, April 2001, N° 184
• WG Application of non
ceramic insulators
«Brittle fracture» of composite insulators : the new explanation and a field case study»
C. DE TOURREIL, L. PARGAMIN, G.THEVENET, S. PRAT, N. SIAMPIRINGUE , ISH, 2001, Paper 5-25
• ESMOL
«New compact composite insulation for environmental economic and safety considerations»
D. DUMORA, 2001 WORLD INSULATOR CONGRESS AND EXHIBITION, Shanghai Nov. 18-21, 2001
«Non destructive techniques for the evaluation of the integrity of composite insulators»
J.M. GEORGE, INTERNATIONAL SYMPOSIUM ON MODERN INSULATOR TECHNOLOGIES, Coral Gables
Florida, Nov. 16-19, 1997
«Studies of the long term performance of composite insulators and of the representativity of ageing
tests» G. RIQUEL, JM FOURMIGUE, D. DE DECKER, R. JOULIE, R. PARRAUD, CIGRE 1996, Paper 33304
ISO 9001 certifications
«Review of in service diagnostic testing of composite insulators / Revue des techniques de diagnostic
en service pour isolateurs composites» CIGRE WG 22-03, ELECTRA, 1996, N° 169
«Rating of composite suspension insulators related to the long term mechanical strength of rods»
L. PARIS, L. PARGAMIN, D. DUMORA, R. PARRAUD, IEEE Transactions on Power Delivery, Vol.9 n°4
October 1994 p.2055-2063
«Mechanical behavior of flexurally stressed composite insulators» D. DUMORA, D. FELDMANN, M.
GAUDRY, IEEE POWER DELIVERY, 1990 Vol. 5 n°2 p.1066-1073
«Natural and artificial weathering of EPDM compounds used in outdoor high voltage insulation» C.
AUBIN, C. HOUDRET, R. MAILFERT, L. PARGAMIN, IEEE ELECTRICAL INSULATION, 1981, N° 4
«Composite insulators for lines 220 kV and above» L. PARGAMIN, J. HUC, IEE CONFERENCE
PUBLICATION, 1979, N° 176
«Effects of the superposition of electric, mechanical and environmental stresses on the fatigue
behavior of composite insulating materials» R. MAILFERT, J. THORIS, D. RIVIERE, L. PARGAMIN,
CIGRE, 1978, Paper 15-10
Catalogs
Seves Canada Inc.
Seves USA Inc.
172 Merizzi,
Ville St-Laurent, Quebec, Canada H4T 1S4
Tel. +1.514.739.3385 - Fax +1.514.739.3669
info@seves.ca - www.seves.com
981 Tyber Road
Tiffin, Ohio 44883, USA
Tel. +1.419.447.3460 - Fax +1.419.447.3481
info@sevesusa.com - www.seves.com
Photos Sediver © Doc.C.L/Z.L./P.S. - C44 -2008-rev2010
«Behaviour of fiber reinforced plastics in HV insulators and fiber matrix bonding in composites:
testing and measurements by a pointe-plan needle test» L. PARGAMIN, R. MAILFERT, IEEE, 1976,
Paper A 77 025-0