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Insulators
ABOUT US
Our mission at GAMMA can be summed up in one simple,
yet effective phrase:
Provide Consistently High Quality Products Supported by
Best in Class Customer Service.
SERVICE IS OUR PASSION
Customer satisfaction is our number one priority, setting
GAMMA apart from all other manufacturers. Our goal is
to continually exceed expectations in product quality,
application solutions, timely response, product
knowledge, and customer service—Every Customer, Every
Contact, Every Time!
RESPECT AND COMMITMENT
Human talent and potential is our greatest asset; at
GAMMA, we facilitate both the personal and professional
development of all our employees. GAMMA employees
work in a friendly and safe environment, where respect
and dignity are expected, and the values of honesty, ethics
and accountability stand at the forefront of all our actions.
INNOVATION AND CONTINUOUS IMPROVEMENT
Freedom to innovate coupled with a culture that
promotes continuous improvement inspires GAMMA
employees to achieve the highest standards of excellence.
Using tried-and-true practices and techniques, we
analyze, measure, and test our products and processes to
ensure consistent quality. We relentlessly pursue ways to
innovate, reduce costs, and increase efficiency in order to
add value to our customers.
INVEST IN THE FUTURE
GAMMA’s business operates in a fiscally responsible
manner, because only a financially healthy company can
lead an industry with the highest level of products and
services. Financially sound companies also have the
flexibility to make strategic, long-term decisions, rather
than resorting to last-ditch, short-term fixes. As a
company in business for the long term, GAMMA makes
current and future investments a key business strategy for
the development of our company.
Insulators
SOCIALLY CONSCIOUS
Committed to being a socially conscious organization, we
make it our goal to improve the environment in which we
operate.
GAMMA actively participates in economic
development projects, environmental protection practices,
and the sustainability of the natural resources used in
producing our products.
Throughout our 50-year history of manufacturing, GAMMA
has maintained its primary focus on the utility
industry—we take pride both in the products we offer and
our position as an industry leader in manufacturing.
Productivity and global efficiency, along with social and
environmental responsibility, form the foundation of our
organization and allow us achieve our goal of Total
Customer Satisfaction.
Experience the GAMMA Difference!
Mauricio Yepes
General Manager,
Gamma Insulator Corporation
ABOUT GAMMA INSULATORS CORPORATION
GAMMA Insulator Company is the utility products
manufacturing subsidiary of the Corona Group, a
multinational conglomerate with over 130 years
manufacturing experience.
Corona has nine
manufacturing facilities throughout the United States and
Colombia, and automated warehouses within easy reach of
32 markets worldwide.
Corona’s state-of-the-art manufacturing facilities utilize
the latest technologies and are all certified to the latest ISO
9001, 14001 and OHSAS 18001 standards. We employ
world-class manufacturing tools and management
systems such as TMP, Lean Manufacturing, DFSS, and Six
Sigma to produce the high quality products you have come
to expect from GAMMA.
The GAMMA manufacturing facility, located in Colombia,
South America, near the city of Medellin, is optimally
located to serve the both North American and South
American utility markets. With access to the Atlantic and
Pacific Oceans, factory-direct shipments to the US and
Canada are measured in days rather than weeks. In
addition, GAMMA’s fully stocked North American
warehouse, located in Savannah, GA, provides a solution for
all immediate fulfilment needs.
Suspension type insulators mechanically hold the conductor thus isolating it from contact with
land and other conductors. GAMMA suspensions support mechanical and electrical charges
ranging from 15,000 to 30,000 lbs. and are available in all tension levels, for both distribution
and transmission systems.
Porcelain suspensions are specifically designed to comply with ANSI CLASS (C29.2-1992)
standards, ensuring the performance of both the electrical and mechanical functions, as well as
to satisfy all dimensional specifications and applicable requirements.
The porcelain suspensions portfolio includes FOG type insulators for high-contaminated
environments. These are offered in brown or gray glaze according to customer preferences and
standards for each country.
Post and cable mount hardware allow insulators to be fixed in suspension and retention
designs for a perfect connection. These are manufactured in galvanized steel with different
configurations, including double galvanized layer or zinc sleeve – characteristics that satisfy all
mounting requirements.
1/2”
5/8”
11/16”
5 1/2”
11/16”
7/8”
6 1/2”
1/2”
5/8”
11/16”
11/16”
6 1/4”
7/8”
4 3/4”
5 3/4”
10 3/4”
1/2”
5/8”
11/16”
11/16”
5 3/4”
11/16”
10 3/4”
5 3/4”
10 3/4”
1/2”
5/8”
11/6”
11/6”
5 3/4”
10 3/4”
Suspension type polymer insulators mechanically hold the conductor cable and electrically
isolate it both from contact from the land and from other conductors. GAMMA polymer
suspensions support mechanical loads ranging from 15736lb to 27000 lbs., with resisting
tensions between 15kV and 69kV for distribution, and between 115kV and 500kV for
transmission.
Polymer insulators are designed and manufactured according to IEC 61109 and ANSI C29.13
standards, to satisfy all applicable requirements, as well as to ensure the quality and
performance of the product throughout its length of service.
Polymer dead ends are manufactured with the highest quality raw materials to ensure a perfect
assembly between the fiberglass nucleus and HTV silicone. Due to this and to the hydrophobic
characteristics of the silicone, humidity cannot enter the nucleus, thus preventing deterioration
of the insulator and extending its service life. These products are lightweight, resistant to
vandalism, and immune to damage due to ultraviolet rays or solar radiation. These insulators
have an aerodynamic design to facilitate self-cleaning by wind and rain.
All polymer suspension end fittings are designed to satisfy their mechanical and electrical
functions. We offer different combinations of iron fittings for distribution and transmission lines
assemblies: clevis, thimble, ball and socket and Y-clevis type. Depending on the installation site
and customer requirements, we also offer iron fittings with a double galvanized layer for use in
contaminated environments.
Polymer Dead Ends
Clevis - tongue
PS015
PS025
PS035
PS045
PS069
Polymer Dead Ends
ball and socket
PS015B
PS025B
PS035B
PS035B80
PS69S1201
Polymer Dead Ends
Y-Clevis - tongue
PS69Y1201
Polymer Dead Ends
Y-Clevis - ball
PS69B1201
Polymer Dead Ends
Tongue - tongue
PS003
Content
Polymer dead
d
ends
Clevis - Tongue
To
H
C
A
3 1/2"
1 1/16"
5/8”
CATALOG NUMBER
ANSI CLASS (C29.13 - 2000)
PS01 5
PS025
PS0 35
DS-15
DS-28
DS-35
7 1/2
16 2/16
11 3/8
24 13/16
15 3/8
36
15736
7868
35
15736
7868
35
15736
7868
35
15
95
85
145
25
130
120
215
35
160
150
265
15
< 10
20
< 10
30
< 10
14 3/4
13
4
18 5/8
16 9/10
6
22 3/8
20 7/10
9
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
DIMENSIONS ACCORDING TO DRAWING
Total heigh t H, inches
Length C , inches
Number of sheds , A
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Clevis - Tongue
H
C
A
Ø3 7/10
1 1/16"
5/8”
CATALOG NUMBER
PS04 5
PS0 69
ANSI CLASS (C29.13 - 2000)
DS-46
DS-69
18 9/16
42 15/16
24
56 1/8
15736
7868
35
15736
7868
35
46
205
165
290
69
251
204
360
30
< 10
45
< 10
25 11/16
24
10
30 3/4
29
13
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
DIMENSIONS ACCORDING TO DRAWING
Total heigh t H, inches
Length C , inches
Number of sheds , A
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Ball and socket
H
C
A
Ø3 1/2
CATALOG NUMBER
ANSI CLASS (C29.13 - 2000)
PS01 5B
PS025B
PS0 35B
DS-15
DS-28
DS-35
7 1/2
16 2/16
11 3/8
24 13/16
15 3/8
36
15736
7868
35
15736
7868
35
15736
7868
35
15
95
85
145
25
130
120
215
35
160
150
265
15
< 10
20
< 10
30
< 10
13 1/2
13
4
17 3/10
16 4/5
6
21 1/10
20 3/5
9
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
DIMENSIONS ACCORDING TO DRAWING
Total heigh t H, inches
Length C , inches
Number of sheds , A
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Ball and socket
21 1/10"
20 6/10"
3 6/10"
CATALOG NUMBER
ANSI CLASS (C29.13 - 2000)
PS035B80
DS-35
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
15 3/8
42 15/16
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
17984
8992
35
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
35
160
150
265
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
30
< 10
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Ball and socket
32 3/5
31 3/10
A
Ø3 1/2
CATALOG NUMBER
ANSI CLASS (C29.13 - 2000)
PS69S1201
DS-69
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
24
56 1/8
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
27000
13500
35
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
69
251
204
360
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
45
< 10
DIMENSIONS ACCORDING TO DRAWING
Number of sheds, A
13
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Y Clevis - tongue
34 2/5
32 1/5
Ø7
A
45°
/10
Ø3 1/2
Ø20.0
CATALOG NUMBER
ANSI CLASS (C29.13 - 2000)
PS69Y1201
DS-69
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
24
56 1/8
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
27000
13500
35
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
69
251
204
360
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
45
< 10
DIMENSIONS ACCORDING TO DRAWING
Number of sheds, A
13
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Y Clevis - ball
858.0
820.0
Ø18
A
45°
.0
Ø95.0
CATALOG NUMBER
ANSI CLASS (C29.13 - 2000)
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
PS69B1201
DS-69
24
56 1/8
MECHANICAL VALUES
Specified mechanical load (SML) pounds
Routine test load (RTL) pounds
Torsional load, lbf .ft
27000
13500
35
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver positiv e
69
251
204
360
RADIO INFLUENCE DATA
Test voltage, kV
Maximum R IV 1000 kHz, μV
45
< 10
DIMENSIONS ACCORDING TO DRAWING
Number of sheds, A
13
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Polymer dead ends
Tongue - tongue
13 1/2"
11 13/16"
3 1/2"
CATALOG NUMBER
PS00 3
CRITICAL DISTANCES, inches
Dry ar cing distnace
Leakage distnace
7
12
MECHANICAL VALUES
Specified mechanical load (SML), pounds
Routine test load (RTL), pounds)
Torsional load, lbf.f t
15736
7868
35
ELECTRICAL VALUES,kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
3 (Dir ect Current)
74
54
RADIO INFLUENCE DATA
Total heigh t H, inches
Length C, inches
13 1/2
1113/16
Note 1: Polymer housing: “high voltage” silicone
Note 2: End fitting: nodular galvanized iron
Insulators
Insulators
Spool
Insulators
Spool
Insulators
These support type insulators are designed to provide the energized conductor cable a
support point to keep it separated from the low-tension lines structures. These are
installed in iron fittings known as hangers, in individual units or in groups. They have a
transversal resistance ranging from 2000 to 6000 lbs. depending on the spool size.
Spool
Insulators
8441-70
8442-70
320333-70
8443-70
8444-70
320141-70
Content
SSpool Insulators
2 1/4”
1 3/4”
3 1/8”
3”
1 3/4”
13/4”
15/16”
11/16”
8441-70
R 11/16”
R 3/8”
3”
R 7/16”
3”
2 1/8”
1/2”
3/4”
7/8”
3/4”
15/16”
11/16”
45/64”
8442-70
CATALOG NUMBER
ANSI CLASS (C29.3-1986 rev.2002)
320333-70
8441-70
8442-70
320333-70
53-1
53-2
-
2000
3000
3000
20
8
10
25
12
15
22
10
12
MECHANICAL VALUES, pounds
Transverse str ength
ELECTRICAL VALUES, kV
Low-frequency dry flasho ver
Low-frequency wet flasho ver, vertical
Low-frequency wet flasho ver, horizontal
Note: ANSI 70 gr ay is standar d. Brown or white a vailable by r equest
Insulators
Spool Insulators
Sp
4”
3”
2 7/8”
1 3/4”
15/16”
15/16”
4 1/8”
1”
R 7/16”
3”
R 5/8”
11/16”
8443-70
4 1/8”
3/4”
3 3/16”
3/4”
2 7/8”
15/16”
R 7/16”
11/16”
11/16”
8444-70
CATALOG NUMBER
ANSI CLASS (C29.3-1986 rev.2002)
320141-70
8443-70
8444-70
320141-70
53-3
53-4
53-5
4000
4500
6000
25
12
15
25
12
15
35
18
25
MECHANICAL VALUES, pounds
Transverse str ength
ELECTRICAL VALUES, kV
Low-frequency dry flasho ver
Low-frequency wet flasho ver, vertical
Low-frequency wet flasho ver, horizontal
Note: ANSI 70 gr ay is standar d. Brown or white a vailable by r equest
Insulators
Insulators
Guy strain
Insulators
Guy Insulators
strain
Guy strain type porcelains are used in low and medium voltage lines. They are
designed to work in mechanical tension (strain), to withstand the pull of a suspended
electrical wire or cable. Guy strains are used in overhead electrical wiring to support
radio antennas and overhead power lines. A strain insulator may be inserted between
two lengths of wire, to isolate them electrically from each other while maintaining a
mechanical connection, or where a wire attaches to a pole or tower, to transmit the pull
of the wire to the support while insulating it.
GAMMA guy strain type insulators are designed, manufactured and tested according to
ANSI standard (C29.4 – 1989) using wet shaping processes. These insulators work under
compression efforts instead of tension.
Insulator´s surface is covered with a waterproof glaze coat, which allows the porcelain
to stay free from dust and dirt caused by environmental contamination. Gray, white or
brown glazing is available according to customer requirements.
Guy strain
Insulators
8502-70
8504-70
8506-70
8451-70
Content
Guy strain
Insulators
2 7/8"
2 1/2"
2 1/2"
3 1/2"
1 3/4"
1 3/4"
3"
4 1/4"
2 1/8"
2 1/4"
5/8"
8502-70
CATALOG NUMBER
ANSI CLASS (C29.4-1989 rev.2002)
7/8"
8504-70
8502-70
8504-70
53-2
54-2
1 5/8
1 7/8
10000
12000
25
12
30
15
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Tensile strength
ELECTRICAL VALUES, kV
Low-fr equency dry flasho ver
Low-fr equency wet flasho ver
Note: ANSI 70 gr ay is standar d. Brown or white available by request
Insulators
Guy strain
Insulators
3 1/2"
3 3/8"
2 3/8"
4 1/2"
4 1/16"
5 1/2"
2 3/8"
6 3/4"
2 5/8"
3 1/8"
1"
1"
8506-70
8451-70
CATALOG NUMBER
ANSI CLASS (C29.4-1989 rev.2002)
8506-70
8451-70
54-3
54-4
2 1/4
3
20000
20000
35
18
40
23
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Tensile strength
ELECTRICAL VALUES, kV
Low-fr equency dry flasho ver
Low-fr equency wet flasho ver
Note: ANSI 70 gr ay is standar d. Brown or white available by request
Insulators
Insulators
Pin
Insulators
Pin
Insulators
Pin type insulators are designed to provide line support. The function of these
insulators is to support the conducting cable directly on the head or neck of the
insulator (top and side grooves).
Pin type insulators are designed and manufactured according to ANSI standard (C29.6
– 1996) in order to ensure their electrical and mechanical performance, as well as to
satisfy all dimensional specifications and requirements. We offer low and medium
voltage pins, and are used in distribution lines ranging from 7.2kV to 34 Kv.
These insulators are also offered with a semi-conductive glaze, generally used to
homogenize the field generated by the electrical path through the conductor that may
cause radio interference.
Pin type insulators are mounted on metallic cross arms, wood cross arms or directly on
the post. GAMMA offers the appropriate iron fittings for each assembly, including
fittings with nylon thread mounting studs replace traditional studs made with lead.
Among the beneficial properties of the nylon thread mounting studs is that these do
not impact the environment or adversely affect the health of individuals manipulating
them.
Low - medium voltage
Pin insulators
6188R-70
6184R-70
6184RA-70
6183R-70
7061R-70
High voltage
Pin insulators
320275R-70
8248R-70
10435R-70
8190R-70
Content
Low - m
medium voltage
Pin Ins
Insulators
3 3/8”
3 3/8"
2 1/4"
3 1/2"
2 1/4”
Ø 1 7/10”
R 9/16"
2 1/4"
R 5/8"
R 9/16”
R9/16"
R 5/8"
3 3/4”
3 3/4" 1 1/2"
3 1/4" 1 1/2"
3 3/4"
4 3/4"
6188R-70
6184R-70
1 1/2”
4 3/4”
6184RA-70
4"
2 7/8"
RF 1"
4"
2 7/8"
R 1"
RF 9/16"
R 9/16"
4 7/8"2"
4 3/8"1 3/4"
5 19/32"
7"
6183R-70
7061R-70
CATALOG NUMBER
ANSI CLASS (C29.5-1984 rev. 2002)
6188R -70
6184R -70
6184RA-70
6183R -70
7061R -70
55-2
55-3
55-3
55-4
55-5
3 3/8
5
4
4 1/2
7
5
4 1/2
7
5
5
9
5
6 1/4
12
6
2500
2500
2500
3000
3000
7.2
45
25
70
85
70
11.5
55
30
90
110
90
11.5
55
30
90
110
90
13.2
65
35
105
130
95
15
80
45
130
150
115
5
50
10
50
10
50
10
50
15
100
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
Minimum pin heigh t
MECHANICAL VALUES, pounds
Cantilever str ength
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
Critical impulse flasho ver, negative
Low-frequency puncture voltage
RADIO INFLUENCIA VOLTAGE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note 1:
Note 2:
Note 3:
Note 4:
ANSI 70 gr ay is standar d. Brown or white a vailable by r equest
Conductive Glaz e - applied to head, side wir e grooves and pin hole for one-piece units
Neck Siz es - “ C” & “F” according to industry standards
Pin Hole Siz es - Standar d 1” to 15 kV and r ef. 320275R -70, 1 3/8” for the r est of 23 kV & 35 kV units
Insulators
High vvoltage pin
Insulators
Insula
4 5/8”
3 1/2”
4 3/4"
R 3/4”
3 1/2"
R 1"
R 9/16”
R 5/8"
5 3/4”
5 1/2"
2 1/4"
2”
8 3/8"
7 1/2”
320275R -70
8248R-70
5 1/8”
5 1/4”
4”
R 3/4”
4”
R 3/4”
R 9/16”
R 9/16”
6 1/2”
7 1/2” 2”
2”
10 1/2”
9”
10435R -70
CATALOG NUMBER
ANSI CLASS (C29.5-1984 rev. 2002/C29.6-1996 rev. 2002
8190R-70
320275R -70
8248R -70
10435R -70
8190R -70
55-6
56-1
56-2
56-3
8
15
7 1/2
7
13
6
8 1/4
17
7
9 1/2
21
8
3000
2500
3000
3000
23
100
50
150
170
135
23
95
60
150
190
130
23
110
70
175
225
145
34.5
125
80
200
265
165
22
100
15
100
22
100
30
200
CRITICAL DISTANCE, inches
Dry ar cing distance
Leakage distance
Minimum pin heigh t
MECHANICAL VALUES, pounds
Cantilever str ength
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
Critical impulse flasho ver, negative
Low-frequency puncture voltage
RADIO INFLUENCIA VOLTAGE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note 1:
Note 2:
Note 3:
Note 4:
ANSI 70 gr ay is standar d. Brown a vailable by r equest
Conductive Glaz e - applied to head, side wir e grooves and pin hole for one-piece units
Neck Siz es - “ C” & “F” according to industry standards
Pin Hole Siz es - Standar d 1” to 15 kV and r ef. 320275R -70, 1 3/8” for the r est of 23 kV & 35 kV units
Insulators
LineInsulators
post
Line posts are support type insulators and are installed on wooden, concrete or metal
cross arms. These are especially designed for distribution lines with typical application
voltages ranging from 25kV to 66kV as per standard ANSI (C29.7 – 1996). Their strong
and robust structural form provides unequalled mechanical and electrical
characteristics.
Nearly impervious to puncture, these insulators generally are used in areas with
lighting hot zones. Designs have a cantilever resistance ranging from 6.6kN to 12.5kN.
Tie top line post
Insulators
Pin post
Insulators
9325X-70
9335X-70
9345X-70
8415X-70
8417X-70
320331-70
Distribution post
Insulator
C neck
Distribution post
Insulator
C neck
4315X-70
4320X-70
4327X-70
4335X-70
4315PX-70
4320PX-70
4327PX-70
4335PX-70
Tie to
top line post
Insula
Insulators
5 7/8"
2 7/8"
R 1"
R 1"
9 3/16"
6 5/16"
2 7/8"
6 1/8"
2 7/8"
R 1"
R 1"
3/4"-10 UF
R 1"
9325X-70
R 1"
15"
12 7/16"
3/4"/10 UF
3/4"-10 UF
9335X-70
CATALOG NUMBER
ANSI CLASS (C29.7-1996 rev. 2002)
9345X-70
9325X -70
9335X -70
9345X -70
57-1
57-2
57-3
6.5
14
9.5
22.5
12.2
29.5
2800
2800
2800
25
90
60
130
35
115
70
179
46
135
100
214
15
100
22
100
30
200
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES, pounds
Cantilever str ength
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
RADIO INFLUENCE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note 1: ANSI 70 gray is standard, Brown or white available by request
Note 2: Insulators can be requested with M20 thread size
Note 3: Available with short or long stud, sold separately
Tie top line post
Insulators
7 1/2"
7"
6"
6"
1 1/2"
20 1/4"
21 1/4"
1 1/2"
3/4” - 10 UF
8416X -70
CATALOG NUMBER
ANSI CLASS (C29.7-1996 rev. 2002)
3/4” - 10 UF
8417X -70
8416X -70
8417X -70
57-4
57-5
14.5
40
17.25
45
2800
2800
55
140
110
230
66
160
130
265
44
200
44
200
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES, pounds
Cantilever str ength
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
RADIO INFLUENCE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note 1: ANSI 70 gray is standard, Brown or white available by request
Note 2: Insulators can be requested with M20 thread size
Note 3: Available with short or long stud, sold separately
P post
Pin
In
Insulators
6”
2 7/8”
R 1”
R 3/4”
1”
7 1/2”
320331-70
CATALOG NUMBER
320331-70
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
9
15.5
MECHANICAL VALUES, pounds
Cantilever str ength
3000
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
Critical impulse flasho ver, negativ e
Low voltage punc ture voltage
25
100
70
155
190
160
RADIO INFLUENCE VOLTAGE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note: ANSI 70 gray is standard. Brown or white available by request
20
100
Dist
Distribution
post
Insu
Insulators
C Neck
F Neck
5”
5”
C Neck
4 4/5”
2 1/4”
R 1”
F Neck
2 1/4”
2 7/8”
4 4/5”
2 7/8”
R 1”
R 1”
R 1”
R 1”
R 1”
R 1”
R 1”
9"
9”
7.8”
7.6”
3/4” - 10 UF
3/4” - 10 UF
4315X-70
4315P X-70
C Neck
F Neck
5 5/32”
5 5/32”
2 1/4”
2 7/8”
R 1”
R 1”
3/4” - 10 UF
4320X-70
3/4” - 10 UF
4320P X-70
C Neck
F Neck
5 2/10
2 2/10
R1"
4 5/10"
2 9/10"
R1"
R1"
R1"
R 1”
R 1”
3/4 - 10 UF
3/4” - 10 UF
3/4” - 10 UF
4327X-70
11"
11"
9 1 1/16”
9 1 1/16”
4327P X-70
CATALOG NUMBER
4335P X-70
3/4 - 10 UF
4335X-70
4315X -70
4315P X-70
4320X -70
4320PX-70
4327X -70
4327P X-70
4335X -70
4335PX -70
5
7 1/2
5 3/4
11
7 5/8
15
8.27
18.21
2000
2000
1500
1000
15
65
40
100
20
80
55
110
27
95
65
140
35
110
80
165
10
50
15
50
20
50
22
100
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES, pounds
Cantilever str ength
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
RADIO INFLUENCE VOLTAGE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note 1: ANSI 70 gray is standard, Brown or white available by request
Note 2: Available with shor t or long stud, sold separ ately
Clamp
top
Insulators
Clamp top insulators are designed and manufactured according to ANSI C29.7, to
ensure both electrical and mechanical performance. These characteristics satisfy all
dimensional specifications and applicable requirements.
GAMMA offers vertical type clamp tops, as well as cup base and gain base horizontal
type for voltages ranging from 20kV to 45kV for distribution lines. Clamp tops can be
assembled in wood or metallic cross arms, concrete posts or metallic structures.
Clamp top vertical type
Insulators
Clamp top horizontal
cup base type
Insulators
4220-70
4225-70
4235-70
4245-70
3620-70
3625-70
3635-70
3645-70
3720-70
3725-70
3735-70
3745-70
Clam top
Clamp
Insulators
Insu
5/8” - 11 NC
5/8” - 11 NC
6 1/8”
5 13/16”
10 43/64”
9 5/16”
3/4” - 10 UF
3/4” - 10 UF
4220-70
4225-70
5/8” - 11 NC
5/8” - 11 NC
6 5/8”
6 3/8”
16 5/8”
14 5/64”
3/4” - 10 UF
3/4” - 10 UF
4245-70
4235-70
CATALOG NUMBER
4220-70
4220 LN-70
4220 LNC-70
4225-70
4225 LN-70
4225 LNC-70
4235-70
4235 LN-70
4235 LNC-70
4245-70
4245 LN-70
4245 LNC-70
-
57-11
57-12
57-13
5
10
6.5
14
9.5
22
12.25
29
2800
5000
2800
5000
2800
5000
2800
5000
20
70
50
100
25
80
60
130
35
110
85
180
45
125
100
210
15
50
15
100
22
100
30
200
ANSI CLASS (C29.7-1996 rev. 2002)
CRITICAL DISTANCES, inches
Dry ar cing distance
Leakage distance
MECHANICAL VALUES, pounds
Cantilever str ength
Tensión str ength
ELECTRICAL VALUES, kV
Typical applica tion voltage
Low-frequency dry flasho ver
Low-frequency wet flasho ver
Critical impulse flasho ver, positive
RADIO INFLUENCE VOLTAGE DATA
Low-frequency test voltage, RMS to gr ound, kV
Maximum R IV a t 1000 kHz, μV
Note 1: ANSI 70 gr ay is standar d. Brown a vailable by r equest
Note 2: LN = Lock nut / LNC= Lock nut with trunnion bolt
Note 3: Available with shor t or long stud, sold separ ately
Insulators
Clamp top
Horizontal cup
Base type
3620-70
3635-70
14 7.7
3625-70
3645-70
Note 1:
Note 2:
Note 3:
Insulators
Clamp top
Horizontal gain
Base type
5/8” - 11 NC
Ø 6 1/8”
11 13/16”
5/8 - 11 NC
Ø
”
7/8
11 3/8”
13 13/16”
5/8” - 11 NC
Ø19/32”
11 13/16”
1113/16
Ø6 3/ 8"
5/8” - 11 NC
Ø7/8”
Ø7/8”
17”
14 11/16"
17 13/64"
19 13/16”
Note 1:
Note 2:
Insulators
Insulators
Station post
INSULATORS
StationInsulators
post
Station
post
Insulators
station post
The GAMMA and GAMMA-CERISOL brand of ANSI solid core porcelain station-post Insulators are
ideally suited for substation bus support and switch applications.
Station posts in this catalog are available in standard strength, high strength, and extra high
strength, in ratings from 95kV BIL through 1800kV BIL, and for applications ranging from 7.5kV
through 500kV operating voltages.
Each insulator body is molded from the highest quality raw materials produced in our
state-of-the-art mineral processing facilities, yielding a product of exceptional wet process
workability, purity, and uniformity.
The entire surface of each station post receives a smooth, uniform glaze, in either gray or brown,
to provide maximum mechanical porcelain strength, to resist the accumulation of contaminants
on the surface, and to facilitate ease of cleaning via rain or routine maintenance. In addition, the
product line features uniform surface drying and voltage distribution to prevent flashover as well
as dry-band arc suppression for high performance and long term reliability.
All hardware fittings are manufactured using hot dipped galvanized malleable cast iron or ductile
cast iron, and are designed specifically for all mechanical and electrical applications to ensure
optimum performance and service longevity.
Portland base mortar is used to secure the hardware to the porcelain body using a proven system
that transfers the load uniformly from the hardware into the porcelain body.
A bituminous coating is applied on the porcelain and the interior of the fittings to compensate for
thermal expansion in extreme weather applications.
Station post type
Insulators, 95kV BIL
202SU0095
222HU0095
Station post type
Insulators, 750kV BIL
291SU0750
295HU0750
Station post type
Insulators, 110kV BIL
205SU0110
225HU0110
Station post type
Insulators, 900kV BIL
304SU0900
308HT0900
308HU0900
Station post type
Insulators, 150kV BIL
208SU0150
227HU0150
Station post type
Insulators, 200kV BIL
210SU0200
231HU0200
Station post type
Insulators, 1050kV BIL
312ST1050
312SU1050
316HT1050
316HU1050
362EU1050
Station post type
Insulators, 250kV BIL
214SU0250
267HU0250
Station post type
Insulators, 1300kV BIL
324ST1300
324SU1300
367HT1300
368EU1300
369ET1300
Station post type
Insulators, 350kV BIL
216SU0350
278HU0350
Station post type
Insulators, 550kV BIL
Station post type
Insulators, 1470kV BIL
330SU1470
371HT1470
372EU1470
373ET1470
286SU0550
287HU0550
Station post type
Insulators, 1550kV BIL
379HT1550
Station post type
Insulators, 650kV BIL
288SU0650
289HU0650
Station post type
Insulators, 1800kV BIL
391ST1800
Small station post
Insulators
Content
8606
8607
8608
8609
8610
STATION POST INSULATORS
Sheds
Sheds are designed to provide excellent
electrical insulation under highly
contaminated conditions, and are strong
enough to provide protection against
mechanical intrusion.
If the shed does break, it is designed to
break cleanly, leaving the body
undamaged and the insulator serviceable.
In addition, our station post insulators
utilize sheds that, when accompanied
with adequate angle and radius
geometry, will ensure the best protection
against rain and pollution.
100% Solid
Core Porcelain Body
Each insulator body is molded from the
highest quality raw materials produced
in
our
state-of-the-art
mineral
processing facilities, yielding a product
of exceptional wet process workability,
purity, and uniformity.
Glaze
Hardware
The entire surface of each Station Post
receives a smooth, uniform glaze in either
gray or brown to provide maximum
mechanical porcelain strength, to resist
the accumulation of contaminants on the
surface, and to facilitate ease of cleaning
via rain or routine maintenance.
All our Station Post hardware fittings are
manufactured using hot dipped galvanized
malleable cast iron or ductile cast iron.
Are designed specifically for all mechanical
and electrical applications to ensure
optimum performance and service
longevity.
Cementing
With Portland base mortar, hardware fittings are cemented to the
porcelain body using a proven system that transfers the load
uniformly from the hardware into the porcelain body.
A bituminous coating is applied on the porcelain and the interior of
the fittings to compensate for thermal expansion in extreme
weather applications.
World class manufacturing facilities and engineering
expertise, along with in-house tooling and development
capabilities, give us the ability and skill set required to
produce custom designed station posts for a wide
variety of applications and customer specifications.
Experience the GAMMA Difference!
Insulators
Sta
Station-post
Type
Insu
Insulators, 95 kV BIL
4 Threads
Ø5/8" - 11
4 Threads
Ø1/2" - 13
10"
7 1/2"
3"
5"
Ø4 1/4"
Ø6.25"
Ø7"
Ø7.24"
TR-202
TR-222
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
202SU0095
222HU0095
TR-202
TR-222
10 1/2
10 1/2
2000
2000
7000
6000
10000
4000
4000
15000
12000
20000
7.5
105
30
95
7.5
105
30
95
5
50
5
50
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Typical application voltage
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M12 thread size.
Contact your GAMMA sales representative for additional information.
Insulators
Station
Station-post
Type
Insulat
Insulators, 110 kV BIL
4 Threads
Ø 5/8" - 11
4 Threads
Ø 1/2" - 13
12"
10"
3"
5"
Ø4 1/4"
Ø6.25"
Ø7"
Ø7.24"
TR-205
TR-225
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
205SU0110
225HU0110
TR-205
TR-225
15 1/2
15 1/2
2000
2000
8500
7000
10000
4000
4000
20000
14000
20000
15
125
45
110
15
125
45
110
10
50
10
50
ANSI CLASS C29.9-1983 (R2002, R2012)
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Typical application voltage
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M12 thread size.
Contact your GAMMA sales representative for additional information.
Insulators
StationStation-post
Type
Insulato
Insulators, 150 kV BIL
4 Threads
Ø 5/8" - 11
4 Threads
Ø 1/2" - 13
15"
14"
3"
5"
Ø4 1/4"
Ø6.31"
Ø6 1/2"
Ø8.46"
TR-208
TR-227
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
208SU0150
227HU0150
TR-208
TR-227
24
24
2000
2000
10000
8000
10000
4000
4000
20000
16000
20000
23
170
60
150
23
170
60
150
15
100
15
100
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Typical application voltage
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M12 thread size.
Contact your GAMMA sales representative for additional information.
Insulators
St
Station-post
Type
Insulators, 200 kV BIL
In
4 Threads
Ø 5/8" - 11
4 Threads
Ø 1/2" - 13
20"
18"
3"
5"
Ø4 1/4"
Ø6.31"
Ø7 1/2"
Ø8.58"
TR-210
TR-231
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
210SU0200
231HU0200
TR-210
TR-231
37
37
2000
2000
12000
10000
15000
4000
4000
25000
20000
30000
34.5
225
80
200
34.5
225
80
200
22
100
22
100
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Typical application voltage
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M12 thread size.
Contact your GAMMA sales representative for additional information.
Insulators
Stati
Station-post
Type
Insul
Insulators, 250 kV BIL
4 Threads
Ø 5/8" - 11
4 Threads
Ø 1/2" - 13
24"
22"
3"
5"
Ø4 1/4"
Ø6.31"
Ø7"
Ø8.74"
TR-214
TR-267
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
214SU0250
267HU0250
TR-214
TR-267
43
43
2000
2000
14000
12000
15000
4000
4000
25000
20000
60000
46
280
100
250
46
280
100
250
30
200
30
200
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Typical application voltage
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M12 thread size.
Contact your GAMMA sales representative for additional information.
Insulators
Stati
Station-post
Type
Insul
Insulators, 350 kV BIL
4 Threads
Ø1/2" - 13
4 Threads
Ø 5/8" - 11
30"
30"
3"
5"
Ø4 1/4"
Ø8.1"
Ø6.3"
Ø9.1"
TR-216
TR-278
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
216SU0350
278HU0350
TR-216
TR-278
72
72
1500
1500
16000
15000
25000
3000
3000
25000
40000
60000
69
390
145
350
69
390
145
350
44
200
44
200
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Typical application voltage
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M12 thread size.
Contact your GAMMA sales representative for additional information.
Insulators
Station
Station-post
Type
Insulators, 550 kV BIL
Insulat
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
45”
45”
Ø6.22
Ø6.3
Ø8.46
Ø9.4
TR-286
TR-287
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
286SU0550
287HU0550
TR-286
TR-287
99
99
1700
1700
20000
40000
60000
2600
2600
25000
90000
75000
610
230
550
610
230
550
73
200
73
200
21
21
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
IInsulators, 650 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
54”
54”
Ø6.22
Ø6.3
Ø8.46
Ø9.1
TR-288
TR-289
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
288SU0650
289HU0650
TR-288
TR-289
116
116
1400
1400
20000
40000
60000
2200
2200
25000
90000
75000
710
275
650
710
275
650
88
200
88
200
25
25
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
Insulators, 750 kV BIL
In
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
62”
62”
Ø6.22
Ø6.3
Ø8.78
Ø9.53
TR-291
TR-295
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
291SU0750
295HU0750
TR-291
TR-295
132
132
1200
1200
20000
40000
60000
1850
1850
25000
90000
75000
810
315
750
810
315
750
103
500
103
500
27
27
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
IInsulators, 900 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
UNIT 1
4 Tapped holes
Ø 5/8" - 11UNC
UNIT 1
40”
UNIT 1
40”
40”
Ø9.33
80”
UNIT 2
80”
80”
UNIT 2
UNIT 2
40”
40”
Ø6.22
Ø8.39
40”
Ø6.3
Ø9.33
Ø6.3
Ø9.33
TR-304
TR-308 HT
TR-308 HU
STANDARD
STRENGTH UNIT
HIGH
STRENGTH UNIT
EXTRA - HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
304SU0900
308HT0900
308HU0900
TR-304
TR-308
TR-308
165
165
165
950
950
20000
40000
60000
1450
25000
90000
75000
1450
1450
25000
90000
75000
1010
385
900
1010
385
900
1010
385
900
146
500
146
500
146
500
20
20
20
20
20
20
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
Insulators, 1050 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
UNIT 1
UNIT 1
46”
46”
92”
UNIT 2
92”
UNIT 2
46”
Ø6.22
Ø8.46
48”
Ø6.22
Ø8.46
TR-312 ST
TR-312 SU
STANDARD
STRENGTH UNIT
STANDARD
STRENGTH UNIT
CATALOG NUMBER
312ST1050
312SU1050
TR-312
TR-312
198
198
800
20000
40000
60000
800
800
20000
40000
60000
1210
455
1050
1210
455
1050
146
500
146
500
21
21
21
21
ANSI CLASS C29.9-1983 (R2002, R2012)
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
Station-post Type
Insulators, 1050 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
UNIT 1
4 Tapped holes
Ø 3/4" - 11UNC
UNIT 1
46”
UNIT 1
46”
46”
Ø8.98
Ø10.24
92”
UNIT 2
92”
92”
UNIT 2
46”
46”
Ø6.3
Ø9.41
UNIT 2
46”
Ø8.66
Ø10.43
Ø6.3
Ø9.41
TR-316 HT
TR-316 HU
TR-362 EU
HIGH
STRENGTH UNIT
HIGH
STRENGTH UNIT
EXTRA - HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
316HT1050
316HU1050
362EU1050
TR-316
TR-316
TR-362
198
198
198
1250
25000
90000
75000
1250
1250
25000
90000
75000
2300
2300
40000
120000
100000
1210
455
1050
1210
455
1050
1210
455
1050
146
500
146
500
146
500
21
21
21
21
21
21
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Note 3: Insulators can be ordered with M20 thread size if 3/4”-10UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
Insulators, 1300 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
UNIT 1
UNIT 1
53.15”
53.15”
Ø8.46
106.0”
UNIT 2
106.0”
UNIT 2
52.83”
52.83”
Ø6.3
Ø9.06
Ø6.3
Ø9.06
TR-324 ST
TR-324 SU
STANDARD
STRENGTH UNIT
STANDARD
STRENGTH UNIT
CATALOG NUMBER
324ST1300
324SU1300
TR-324
TR-324
231
231
1000
25000
90000
75000
1000
1000
25000
90000
75000
1410
525
1300
1410
525
1300
220
1000
220
1000
25
28
28
28
ANSI CLASS C29.9-1983 (R2002, R2012)
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
IInsulators, 1300 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 5/8" - 11UNC
Ø8.66
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
UNIT 1
UNIT 1
UNIT 1
53.15”
53.15”
53.15”
Ø10.04
Ø8.46
Ø10.04
106.0”
106.0”
UNIT 2
106.0”
UNIT 2
UNIT 2
52.83”
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
Ø10.04
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
Ø10.43
Ø8.66
Ø10.43
TR-367 HT
HIGH
STRENGTH UNIT
52.83”
52.83”
TR-368 EU
TR-369 ET
EXTRA - HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
EXTRA - HIGH
STRENGTH UNIT
367HT1300
368EU1300
369ET1300
TR-367
TR-368
TR-369
231
231
231
1450
2050
20000
40000
60000
2050
2050
40000
120000
100000
20000
40000
60000
1410
525
1300
1410
525
1300
1410
525
1300
220
1000
220
1000
220
1000
25
28
28
27
28
27
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Note 3: Insulators can be ordered with M20 thread size if 3/4”-10UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
In
Insulators, 1470 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
Ø6.22
4 Tapped holes
Ø 5/8" - 11UNC
UNIT 1
UNIT 1
61”
128.0”
61.0”
128.0”
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
Ø9.72
STANDARD
STRENGTH UNIT
128.0”
UNIT 2
UNIT 2
61.0”
TR-330 SU
61.0”
Ø9.53
128.0”
UNIT 2
Ø6.3
Ø9.53
UNIT 1
Ø10.24
Ø8.78
61”
Ø6.3
UNIT 1
61.0”
UNIT 2
4 Tapped holes
Ø 5/8" - 11UNC
4 Tapped holes
Ø 3/4" - 11UNC
61.0”
61.0”
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
Ø10.32
Ø8.66
Ø10.32
TR-371 HT
TR-372 EU
TR-373 ET
HIGH
STRENGTH UNIT
EXTRA - HIGH
STRENGTH UNIT
EXTRA - HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
330SU1470
371HT1470
372EU1470
373ET1470
TR-330
TR-371
TR-372
TR-373
264
264
264
264
900
900
25000
90000
75000
1170
1750
20000
40000
60000
1750
1750
20000
40000
60000
20000
40000
60000
1610
590
1470
1610
590
1470
1610
590
1470
1610
590
1470
220
1000
220
1000
220
1000
220
1000
27
27
27
28
28
28
27
28
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, upright
Cantilever strength, underhung
Tensile strength
Torsion strength, inch-pounds
Compression strength
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Note 3: Insulators can be ordered with M20 thread size if 3/4”-10UNC diameter.
Contact your GAMMA sales representative for additional information.
S
Station-post
Type
In
Insulators, 1550 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
Ø6.3
UNIT 1
64.0”
Ø9.53
128.0”
UNIT 2
Ø10.32
64.0”
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
Ø10.83
TR-379 HT
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
379HT1550
TR-379
CRITICAL DISTANCES, inches
Leakage distance
280
MECHANICAL VALUES, pounds
Cantilever strength, upright
Tensile strength
Torsion strength, inch-pounds
Compression strength
1700
20000
40000
60000
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
1710
620
1550
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
318
2000
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
27
31
S
Station-post
Type
IInsulators, 1800 kV BIL
4 Tapped holes
Ø 5/8" - 11UNC
Ø6.69
UNIT 1
Ø10.43
50.67”
UNIT 2
Ø10.43
50.67”
152.0”
UNIT 3
Ø10.83
50.67”
4 Tapped holes
Ø 3/4" - 11UNC
Ø8.66
Ø10.83
TR-391 ST
HIGH
STRENGTH UNIT
CATALOG NUMBER
ANSI CLASS C29.9-1983 (R2002, R2012)
391ST1800
TR-391
CRITICAL DISTANCES, inches
Leakage distance
321.5
MECHANICAL VALUES, pounds
Cantilever strength, upright
Tensile strength
Torsion strength, inch-pounds
Compression strength
1400
20000
40000
60000
ELECTRICAL VALUES, kV
Impulse flashover, positive
Low frequency withstand, 10 sec. wet
Impulse withstand
2000
710
1800
RADIO - INFLUENCE VOLTAGE
Low frequency test voltage, RMS to ground, kV
Maximum RIV at 1,000 kHz, μV
318
2000
DIMENSIONS ACCORDING
Sheds unit 1
Sheds unit 2
Sheds unit 3
Note 1: ANSI 70 gray is standard. Brown available by request.
Note 2: Insulators can be ordered with M16 thread size if 5/8”-11UNC diameter.
Contact your GAMMA sales representative for additional information.
23
23
22
Small station post
Insulators
3/8-16 Thread
(Galv. Steel) TYP
3/8-16 Thread
(Galv. Steel) TYP
3/8-16 Thread
(Galv. Steel) TYP
8"
7"
6 3/4"
1"
1"
1"
2 1/4"
Ø3 7/10"
Ø5 1/2"
2 1/4"
Ø3 7/10"
Ø5 1/2"
8606
8607
2 1/4"
Ø3 7/10"
Ø5 1/2"
8608
3/8-16 Thread
(Galv. Steel) TYP
3/8-16 Thread
(Galv. Steel) TYP
10"
9"
1"
1"
2 1/4"
Ø3 7/10"
Ø5 1/2"
2 1/4"
Ø3 7/10"
Ø5 1/2"
8609
8610
CATALOG NUMBER
8606
8607
8608
8609
8610
13 9/16
14 1/4
17 1/2
20 7/8
24 3/8
1200
5000
3000
10000
1200
5000
5000
5000
1000
5000
5000
5000
900
5000
3000
5000
1000
5000
5000
5000
30
95
30
110
45
125
50
125
60
150
CRITICAL DISTANCES, inches
Leakage distance
MECHANICAL VALUES, pounds
Cantilever strength, pounds
Tensile strength, pounds
Torsion strenght, inch-pounds
Compression strenght, pounds
ELECTRICAL VALUES, kV
Low-frequency withstand, 10 sec. wet
Basic insulation level (BIL), kV
Note: ANSI 70 gray is standard. Brown available by request.
Insulators
Fiberglass
guyInsulators
strain
Fiberglass guy strain type insulators are used in low and medium voltage lines. These
are designed to work in mechanical tension (strain), to withstand the pull of a
suspended electrical wire or cable. They are used in overhead electrical wiring to
support radio antennas and overhead power lines.
Fiberglass guy strains are manufactured using high quality raw materials to ensure a
perfect connection between the fiberglass nucleus and cast ductile iron fittings.
Fittings are designed to satisfy applicable mechanical and electrical requirements.
Various combinations are available for distribution lines assemblies: Clevis, Y- clevis,
roller and thimble eye, which resist mechanical loads ranging from 15,000 up to 36,000
lbs.
Fiberglass guy strain
Insulators, GS15
Fiberglass guy strain
Insulators, GS36
GS1512- XX
GS1518- XX
GS1524- XX
GS1530- XX
GS1536- XX
GS1542- XX
GS1554- XX
GS1560- XX
GS1578- XX
GS1590- XX
GS1596- XX
GS15120- XX
GS15144- XX
GS3612- XX
GS3618- XX
GS3624- XX
GS3630- XX
GS3636- XX
GS3642- XX
GS3654- XX
GS3660- XX
GS3678- XX
GS3690- XX
GS3696- XX
GS36120- XX
GS36144- XX
Fiberglass guy strain
Insulators, GS21
GS2112- XX
GS2118- XX
GS2124- XX
GS2130- XX
GS2136- XX
GS2142- XX
GS2154- XX
GS2160- XX
GS2178- XX
GS2190- XX
GS2196- XX
GS21120- XX
GS21144- XX
Content
Fiberglass guy st
strain
Insulators
GS15 - Series
“L”
GM
GM
0.6”
“L”ASSEMBLY
“RL” STICK
CATALOG NUMBER
GS1512- XX
GS1518- XX
GS1524- XX
GS1530- XX
GS1536- XX
GS1542- XX
GS1554- XX
GS1560- XX
GS1578- XX
GS1590- XX
GS1596- XX
GS15120- XX
GS15144- XX
MECHANICAL STRENGTH CLASS, Lbs (KN)
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
(67)
(67)
(67)
(67)
(67)
(67)
(67)
(67)
(67)
(67)
(67)
(67)
(67)
LENGTH L, inches (mm)
12" (305)
18" (457)
24" (610)
30" (762)
36" (914)
42" (1067 )
54" (1372)
60" (1524 )
78" (1981 )
90" (2286 )
96" (2438 )
120" (3048 )
144" (3657 )
Note 1: XX code is the type of cast ductile iron, hot dip galvanized end fittings.
T: Thimble Eye
Y: Y - Clevis
C: Clevis with pin and clip
R: Clevis with roller pin and clip
Example: TC (Thimble eye - Clevis with pin and clip) end
Insulators
Fiberglass guy st
strain
Insulators
GS21 - Series
“L”
GM
GM
0.75”
“L”ASSEMBL
Y
“RL” STICK
CATALOG NUMBER
GS2112- XX
GS2118- XX
GS2124- XX
GS2130- XX
GS2136- XX
GS2142- XX
GS2154- XX
GS2160- XX
GS2178- XX
GS2190- XX
GS2196- XX
GS21120- XX
GS21144- XX
MECHANICAL STRENGTH CLASS, Lbs (KN)
21000
21000
21000
21000
21000
21000
21000
21000
21000
21000
21000
21000
21000
(95)
(95)
(95)
(95)
(95)
(95)
(95)
(95)
(95)
(95)
(95)
(95)
(95)
LENGTH L, inches (mm)
12" (305)
18" (457)
24" (610)
30" (762)
36" (914)
42" (1067 )
54" (1372)
60" (1524 )
78" (1981 )
90" (2286 )
96" (2438 )
120" (3048 )
144" (3657 )
Note 1: XX code is the type of cast ductile iron, hot dip galvanized end fittings.
T: Thimble Eye
Y: Y - Clevis
C: Clevis with pin and clip
R: Clevis with roller pin and clip
Example: TC (Thimble eye - Clevis with pin and clip) end
Insulators
Fiberglass guy st
strain
Insulators
GS36 - Series
“L”
GM
GM
0.8”
“L”ASSEMBLY
“RL” STICK
CATALOG NUMBER
MECHANICAL STRENGTH CLASS, Lbs (KN)
LENGTH L, inches (mm)
GS3612- XX
GS3618- XX
GS3624- XX
GS3630- XX
GS3636- XX
GS3642- XX
GS3654- XX
GS3660- XX
GS3678- XX
GS3690- XX
GS3696- XX
GS36120- XX
GS36144- XX
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
36000 (160)
12" (305)
18" (457)
24" (610)
30" (762)
36" (914)
42" (1067 )
54" (1372)
60" (1524 )
78" (1981 )
90" (2286 )
96" (2438 )
120" (3048 )
144" (3657 )
Note 1: XX code is the type of cast ductile iron, hot dip galvanized end fittings.
T: Thimble Eye
C: Clevis with pin and clip
R: Clevis with roller pin and clip
Example: TC (Thimble eye - Clevis with pin and clip) end
Insulators
Hardware
Hardware
For Insulators
The Product: Designed to eliminate abrupt changes in curvature, our high quality finished
products, relies on smooth surfaces, with no sharp edges, protusions, burrs, slag or scales.
These designs, avoids points of mechanical stress concentration or electric field, and possible
radio interface signal.
The Galvanized: Galvanized hardware to ensure proper protection from corrosion and
contaminant elements. We also offer double galvanized hardware in order to potentiate those
features, especially when these are going to be installed in contaminated environments,
overall, with our polymer dead end insulators.
Standards as applicable:
• ANSI C135.17: 1979 pin studs
• ASTM D-4066 nylon threads
•ASTM A-536 Class 65-45-12 for nodular steel
• IEEE std C135.61-1997 for clamps
Constitutive Parts:
Clamps are of aluminum alloy 356 and T6 type heat treatment.
The product provides excellent mechanical properties resulting from the use of aluminum
alloy of high conductivity, giving, simultaneously, high resistance to corrosion.
Stainless steel cotter pins.
Provides security in the assembly, in the way that the pin material has high corrosion
resistance and excellent mechanical properties, therefore, ensures the mounting assembly.
Hardwares
Eye nuts
Hangers
Thimbles
Clamps
Couplings
Mounting Studs
nylon thread
Mounting studs
Content
Hardware
Guide for insulators usage
Suspensions
CH645
CH651
Hanging Rings
Post Mount
CH657
Thimble
CH627
CH607
Eye Nuts
Cable Mount
CH631
GAMMA
6815-70
6605-70
8265
Casting ASTM 536 hot dip galvanized
ANSI
52-9 A
52-1
52-4
CH013GRP1
CH017GRP1
Polymers
CH017GRR1
CH012GRR1
CH017GSS1
Clamps
Aluminum 356 treatment T6
CH645
CH651
Hanging Rings
Post Mount
CH657
Thimble
CH627
CH607
Eye Nuts
CH631
Cable Mount
GAMMA
PS015
PS025
PS035
PS045
PS069
Casting ASTM 536 hot dip galvanized
Couplings
ANSI
DS-15
DS-28
DS-35
DS-46
DS-69
CH013GRP1
CH017GRP1
CH017GRR1
CH012GRR1
CH017GSS1
Clamps
Aluminum 356 treatment T6
for Porcelain and Polymers
Post Mount
CH620
Ball Clevis
CH638
Eye Ball
Cable Mount
GAMMA
8255
8257
8258
Cable Mount
ANSI
52-3
52-3
52-5
CH623
Socket Tongue
GAMMA
8265
Casting ASTM 536 hot dip galvanized
ANSI
52-4
CH630
Clevis
Tongue
CH620
Ball Clevis
Eye nuts
Hardwar
Hardware
Ø6/10”
Ø15/10”
3”
16/10”
Thread
5/8” - 11UNC-2B
8/10”
11/10”
Ø16/10”
26/10”
13/10”
6/10”
Ø7/10”
Ø6/10”
5/8”
28/10”
44/10”
33/10”
Thread
5/8” - 11UNC-2B
45/10”
Thread
5/8” - 11UNC-2B
7/10”
11/10”
6/10”
Ø25/10”
Ø14/10”
28/10”
Insulators
Han
Hangers
Hard
Hardware
5/8”
Ø26/10”
Ø5/8”
35/10”
Ø13/10”
39/10”
Ø17/10”
7/10”
5/8”
Ø16/10”
7/10”
27/10”
Ø3/10”
2”
Ø5/8”
32/10”
27/10”
Ø3/10”
Ø5/8”
32/10”
Insulators
Thimble
Hardware
16/10”
17/10”
9/10”
Ø7/10”
Ø2/10”
Ø5/8”
23/10”
31/10”
52/10”
1”
16/10”
16/10”
3”
Insulators
Cla
Clamps
Ha
Hardware
1”
1
A
0.7”
6
Ø5/8”
1”
1”
B
5
6
11/4”
17/10”
3
3
4
5
7
C
5/8”
4
B
1
2
2
A
Deadend clamp
C
Quadrant deadend clamp
RAW MA TERIAL
1. Aluminum alloy 356 - T6
2. Aluminum alloy 356 - T6
3. Galv anized steel U-bolts
4. Galv anized steel U-bolts
5. Galv anized steel U-bolts
6. Galv anized forged steel
7. Stainless steel
Insulators
1”
Clam
Clamps
Hard
Hardware
1
0.7”
1”
B
6
Ø5/8”
11/4”
Quadrant deadend clamp
A
7
C
1
Ø5/8”
1”
6
7
5
6
B
17/10”
3
2
C
5/8”
B
1
4
2
5
4
A
Deadend clamp
RAW MA TERIAL
1. Aluminum alloy 356 - T6
2. Aluminum alloy 356 - T6
3. Galv anized steel U-bolts
4. Galv anized steel U-bolts
5. Galv anized steel U-bolts
6. Galv anized forged steel
7. Stainless steel
Insulators
3
Couplings
Hardware
1 1/2”
7/8”
2”
1 1/2”
Ø3/4”
2”
3/4”
7/8”
1”
2”
1/2”
2”
2 3/4”
4”
4”
R3”
1”
Ø11/16”
1/2”
Ø11/2”
2”
1 1/2”
2 1/2”
1”
2”
R1/2”
1”
Ø1 1/2”
2”
5”
Ø3 1/2”
Ø1 1/16”
Ø3/4”
2 1/2”
Ø11/16”
1/2”
Ø2”
Ø1 1/2”
Hardware for Pins
Guide for insulators usage
Pin Type
GAMMA
6188R-70
6184R-70
ANSI
GAMMA
52-2
55-3
6183R-70
7061R-70
ANSI
54-4
55-5
Wood Crossarm
Metal Crossarm
CH150EME1
Post Mount
CH150ECO1
CH150EMA1
Casting ASTM 536 Nylon thread Ø 1”
ASTM D 4066
GAMMA
320275R-70
8248R-70
ANSI
GAMMA
55-6
56-1
10435R-70
8190R-70
ANSI
56-2
56-3
Wood Crossarm
Metal Crossarm
CH203EME1
Post Mount
CH203EMA1
CH203ECO1
Casting ASTM 536 Nylon Thread Ø 1 1/2”
ASTM D 4066
Pin post
GAMMA
320331-70
Wood Crossarm
Metal Crossarm
CH150EME1
Post Mount
CH150EMA1
Casting ASTM 536 Nylon Thread Ø 1 1/2”
ASTM D 4066
CH150ECO1
Mountin Studs
Mounting
Thread
Nylon Th
Nylon Thread
Ø1”
Ø3/4”
Ø9/10”
Ø2”
1 3/4”
A
6”
B
Mountin Studs
Mounting
Nylon TThread
Nylon Thread
Ø1 3/8”
Ø1 1/2”
Ø1”
Ø3 1/2”
Ø3/4”
2 1/8”
A
8”
B
Hardware for Posts
Guide for insulators usage
Tie Top
GAMMA
9325X-70
9335X-70
9345X-70
ANSI
GAMMA
57-1
57-2
57-3
8416X-70
8417X-70
ANSI
57-4
57-5
Metal Crossarm
Wood Crossarm
Wood Crossarm
V-011612A
V-010187A
Metal Crossarm
Metal Crossarm
V-301614
V-301613
V-74739
Wrought hot dip galvanized
Clamp top
GAMMA
4220-70
4225-70
4235-70
4245-70
ANSI
GAMMA
7-11
7-12
7-13
3620-70
3625-70
3635-70
3645-70
ANSI
57-21
57-22
57-23
Metal Crossarm
Wood Crossarm
V-010187A
Wood Crossarm
V-011612A
Metal Crossarm
Metal Crossarm
V-74739
Wrought hot dip galvanized
V-301613
V-301614
Mounting Studs
Mounti
1.02
0.06 FLAT
BEARING
SURFACE
0.62
0.81
A
3/4 - 10
3/4” - 10
Ø1.25
A
R 0.06
0.05
SERRATED
SURFACE
0.17
7.56
8.75
CATALOG NUMBER
0.78 (25/32”)
HEX MUST PASS
Ø0.81 HOLE
4.00
0.19
SECTION A - A
V-010187A
Dimensions in inches
ACCESORIES
1 Med type positive lock washer
1 Square Washer
1 Standard square nut
1 Lock nut
Notes:
Wood crossarm
Rating, kV: 35, 45, 55, 66
Material: C-1038 steel
Minimum Brinnell 143
Hot dip galvanized
3/4”
2.25sq x 0.81 x 0.19
3/4”
3/4”
Mounting Studs
Mounti
1.02
A
0.81
3/4 - 10
5/8 - 11
0.65
REF.
Ø1.25
A
4.0
SERRATED
SURFACE
SECTION A - A
8.75
CATALOG NUMBER
V-011612A
Dimensions in inches
ACCESORIES
1 Med type positive lock washer
1 Square Washer
1 Regular square nut
1 Lock nut
Notes:
Wood crossarm
Rating, kV: 15, 20, 25
Material: C-1038 steel
Minimum Brinnell 143
Hot dip galvanized
3/4”
2 x 2 x 11/16 x 1/8
5/8”
5/8”
Mounting Studs
Mounti
1.02
3/4” - 10
1.56
0.81
0.38
Ø1.25
R 0.06
SERRATED
SURFACE
2.19
0.17
3.38
CATALOG NUMBER
0.44
MUST FIT
7/16 WRENCH
5/8” - 11
0.05
5/8” - 11 NUT MUST
PASS OVER HEX.
CORNERS AFTER GALV.
V-74739
Dimensions in inches
ACCESORIES
1 LT type positive lock washer
1 LT type positive lock washer
1 Square washer
1 Regular hexagonal nut
Notes:
Metal crossarm
Rating, kV: 15,20, 25
Material: C-1038 steel
Minimum Brinnell 143
Hot dip galvanized
3/4”
5/8”
2.25 x 2.25 x 0.69 x 0.19
5/8”
Mounting Studs
Mounti
1.02
0.06 FLAT
BEARING
SURFACE
1.56
0.81
0.38
3/4” - 10
Ø1.25
R 0.06
SERRATED
SURFACE
0.17
2.19
3.38
CATALOG NUMBER
0.44
MUST FIT
7/16 WRENCH
5/8” - 11
0.05
5/8” - 11 NUT MUST
PASS OVER HEX.
CORNERS AFTER GALV.
V-301613
Dimensions in inches
ACCESORIES
1 Med type positive lock washer
1 Med type positive lock washer
1 Regular hexagonal nut
3/4”
5/8”
5/8”
Notes:
Metal crossarm
Rating, kV: 15, 20, 25
Material: C-1038 steel
Minimum Brinnell 143
Hot dip galvanized
Insulators
Mounting Studs
Mounti
1.02
0.06 FLAT
BEARING
SURFACE
1.56
0.81
0.50
0.12
Ø1.25
R 0.06
SERRATED
SURFACE
2.19
0.17
3.38
CATALOG NUMBER
0.56
MUST FIT
9/16 WRENCH
3/4” - 10 THREAD
BOTH ENDS
0.05
3/4” - 10 NUT MUST
PASS OVER HEX.
CORNERS
V-301614
Dimensions in inches
ACCESORIES
2 Med type positive lock washer
2 Regular hexagonal nut
3/4”
3/4”
Notes:
Metal crossarm
Rating, kV: 35, 45, 55, 66
Material: C-1038 steel
Minimum Brinnell 143
Hot dip galvanized
Insulators
GAMMA INSULATORS CORP. - TERMS & CONDITIONS OF SALE
1. AGREEMENT. The contract of sale resulting from documentation on the reverse side or attached hereto together with
these terms and conditions (“Contract”) constitutes the entire agreement between the parties hereto, except as modified in
writing signed by both the Seller and Purchaser. The Seller is Gamma Insulators Corp. and the Purchaser is identified in the
Contract. Any terms in a purchase order, irrespective of their materiality, which are either different from or additional to
Seller’s terms and conditions of sale, are objected to and are excluded unless the Seller expressly agrees in writing to such
terms. Execution of such forms by Seller to accommodate Purchaser’s procedures or to evidence agreed upon change
orders shall not be construed as assent to Purchaser’s terms. Any representations, warranties or statements made by any
employee, sales person or agent of Seller not expressed in the Contract shall not be binding on Seller. Acceptance of the
goods shipped shall constitute assent to Seller’s terms and conditions of sale. The Contract shall be binding upon Purchaser
and Seller, and on their successors and assigns.
2. ACCEPTANCE AND APPROVAL OF ORDER. A proposal or quotation from Seller shall not be considered as an offer, but the
basis for an order from Purchaser which is subject to acceptance by Seller. An order will become binding on Seller only when
accepted and approved by the Sales and Credit Department of the Seller. Orders are accepted only at Rochester, New York
and / or Sabaneta, Colombia. The minimum order is $500. Partial orders are subject to price reviews. Orders must be in even
standard packages. In the event of an order that does not correspond to standard package size, Seller will increase the order
quantity to the next largest standard package size.
3. CREDIT. Credit terms of payment must have the approval of Seller’s Credit Department and must be specified in writing
on Seller’s invoice or in the Contract. If Purchaser’s credit is found by Seller to be unsatisfactory, Seller may rescind or
terminate the Contract. If at any time during the term of the Contract Purchaser’s financial responsibility becomes impaired
or unsatisfactory to Seller, Seller reserves the right to stop shipment on notification to Purchaser, demand payment in
advance or at time of delivery for future deliveries, or require other security satisfactory to Seller and in the absence thereof,
to terminate the unfilled portion of the Contract. Seller will notify Purchaser promptly of its decision to stop shipments and
give an advance notice to the extent possible. In the absence of credit terms, sales are for cash.
4. PAYMENT. Default unless otherwise stated is Net 30 days in U.S. Funds. Specific terms of payment shall be set forth on the
reverse side of the Contract or identified and appended hereto. Purchaser agrees to make payment at Seller’s location
specified in the Contract in lawful money of the United States. Purchaser further agrees to make all payments when due to
Seller in accordance with the agreed terms of payment in the Contract with no right of retention or set-off. Purchaser agrees
to pay a finance charge of 1.5% per month (or, to the extent permitted by law if less) on all delinquent balances if and when
assessed by Seller, and any attorney’s fees and court costs arising out of and made necessary in collection of Purchaser’s
obligation to Seller created by the Contract.
5. TAXES. Any federal, state or local tax, assessment, fee, duty or charge hereafter imposed on or measured by the products
purchased hereunder shall be for Purchaser’s account, unless Purchaser furnishes Seller an acceptable exemption certificate
from such tax, fee, duty or charge prior to shipment.
6. FORCE MAJEURE. Seller shall make delivery in accordance with the terms of the Contract or within a reasonable time in the
absence of any specific commitment, but Seller shall not be liable for delays or defaults in delivery caused by floods, fires,
storms, or other acts of God, by war or act of public enemy (or civil disturbance), strikes, lockouts, shortages of labor or raw
materials and supplies (including fuel) or production facilities, transportation service or equipment shortages or failures,
action of any governmental authority or other conditions beyond Seller’s reasonable control.
7. CANCELLATION. Order cancellations and/or deferrals will be subject to a minimum 25% charge. If Purchaser desires to
cancel or change any portion of the Contract, it must make such request in writing to Seller. Seller may, in its sole discretion,
accept or reject any such request. If accepted, the Purchaser nonetheless must take delivery and make payment to Seller for
all material manufactured and in stock or in process of manufacture at time of notice, and all special materials ordered at
time of notice and for which Seller must take delivery, unless otherwise agreed by Seller in writing. All such materials must
be removed from Seller’s premises within 30 days after payment and payment will be due at time of notice.
8. INSPECTION AND TESTING. Seller’s standard specifications and tests apply to all orders. All charges for inspections or tests
not regularly furnished are for Purchaser’s account and subject to prior negotiation. All inspections shall be conducted at
Seller’s plant, and failure of Purchaser to avail itself of inspection privileges shall be deemed a waiver of such privileges.
Insulators
GAMMA INSULATORS CORP. - TERMS & CONDITIONS OF SALE
9. PRICES. Prices are subject to change without notice. Orders based on published prices and accepted for scheduled
shipment will be invoiced at Seller’s applicable price in effect on the scheduled date of shipment, unless otherwise
specifically noted on Seller’s order acknowledgement. All prices will be in accordance with applicable government
regulations. Orders specifying palletizing or special packaging will involve special charges.
10. DELAYS. All orders are accepted subject to Seller’s ability to make delivery at the time and in the quantities specified, and
Seller shall not be liable for damages for failure to make partial or complete shipment or for any delay in making shipments.
Purchaser shall be liable for any added expenses incurred by Seller because of Purchaser’s delay in furnishing requested
information to Seller, delay resulting from order changes by Purchaser, or delay in unloading shipments at delivery point.
11. SHIPMENT. Seller will select method of shipment and routing when transportation charges are for account of Seller.
When shipping instructions are specified by the Purchaser, all costs in excess of the most economical method of
transportation will be for the account of the Purchaser. The foregoing includes, but is not limited to, carrier’s charges for
notification prior to delivery, demurrage, delay in unloading, diversion, or reconsignment. If Purchaser needs a flatbed, the
cost difference between regular truck and flatbed will be charged to the Purchaser, documentation of the difference will be
available upon request.
12. FREIGHT ALLOWANCE. Freight terms are based on regular, enclosed truck to single destination, unless otherwise stated.
If flatbed truck is required, additional charges will apply if order is freight allowed. Same applies for shipments during
weekends, nights, expedite and/or air shipments. Seller’s freight allowance is $7,500.00 or more per order shipment release
to one destination for eastern states (1), $10,000.00 for western states (2), and $15,000.00 for shipments destined to Canada
unless otherwise negotiated. For orders to Alaska and Hawaii that meet freight allowance requirements freight will be paid
to the West Coast Port of Exit. The above policy applies to standard dry van ground transit only. The freight allowance terms
are “FOB Origin, Freight Prepaid.” In the event the freight thresholds are not met, the terms will either be “FOB Origin,
Freight Prepaid and Billed” or “FOB Origin, Freight Collect”.
(1). Eastern States: AL, AR, CT, DE, FL, GA, IL, IN, IA, KY, LA, ME, MD, MA, MI, MN, MS, MO, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT,
VA, WV, WI.
(2). Western States: AK, AZ, CA, CO, HI, ID, KS, MT, NE, NM, NV, ND, OK, OR, SD, TX, UT, WA, WY.
14. IN TRANSIT CLAIMS. Claims for damage or shortage in transit must be made against the carrier by the owner of the
shipment according to the FOB terms of the Contract. Purchaser has the responsibility to inspect shipments before or during
unloading to identify any such damage or shortage and see that appropriate notation is made on the delivery tickets or an
inspection report furnished by the local agent of the carrier in order to support a claim.
15. CLAIMS. Notice of claims against Seller hereunder for any reason, must be made to Seller in writing within 30 calendar
days after discovery and within any applicable warranty period. Failure to give such notice to Seller shall constitute a waiver
by Purchaser of any right later to assert such claim. Products must be inspected by Purchaser upon receipt and notice of
defects or damage must be given to Seller within 24 hours of receipt of product.
16. RETURNS. All requests for returned goods must first be approved in writing, by the appropriate Product Line Manager.
After written approval, returned goods shall be accepted for credit only if in saleable condition and only with evidence of
Seller’s prior written consent and proof of purchase within one year of request date. Product must be in original packaging
and be in standard pack quantities. Special items of other than normal and standard design regularly sold by Seller cannot
be returned. Seller will assess a minimum 25% restocking charge, if applicable. Delivery costs to and from the Purchaser that
were paid by Seller will be deducted along with all loading and unloading costs and any costs of repair.
17. PATENTS. Seller agrees to defend, and to protect Purchaser against loss or damage usually arising out of any legal action
for patent infringement in connection with the manufacture of its products sold to Purchaser, provided Seller is notified
within 30 calendar days of any such action with complete information and is given an opportunity to defend. Seller’s
obligation hereunder shall be subject to the following: That Purchaser has not modified the product and is utilizing it for its
intended purpose. In no event shall Seller be liable for any consequential or incidental damages.
Insulators
GAMMA INSULATORS CORP. - TERMS & CONDITIONS OF SALE
18. WARRANTY; LIMITATION OF LIABILITY. Seller warrants title to each individual product sold under the Contract and
further warrants for a period of one (l) year after shipment, but only to the extent and limit of the purchase price paid for
such individual product, that such product conforms to the specifications set forth in the Contract and is free from defects
in material and workmanship under normal service and use for which it was designed. Seller’s sole obligation and
Purchaser’s exclusive remedy under this warranty shall be limited to one of the following, as selected by Seller: delivering to
Purchaser a replacement for any product part thereof determined by Seller to be defective; repairing such product or part;
or refunding the purchase price (or an equitable portion thereof) paid for such product or part by Purchaser. SELLER MAKES
NO WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY, AND NO OTHER WARRANTY, WHETHER
EXPRESS OR ARISING BY OPERATION OF LAW, COURSE OF DEALING, USAGE OF TRADE OR OTHERWISE IMPLIED SHALL EXIST
IN CONNECTION WITH SELLER’S PRODUCTS OR ANY SALE OR USE THEREOF. Purchaser must notify Seller within
30 calendar days of discovery and within the warranty period of any claim under this warranty. Seller’s warranty extends
only to the first purchaser of a product from Seller or Seller’s authorized distributor. All goods not manufactured by Seller
are warranted only to the extent of the warranties of the original manufacturer. Seller disclaims, and shall not be responsible
for, any liability arising from tort, including strict liability, and Seller further disclaims, and shall not be responsible for, any
liability (whether arising under this or any other provision of the Contract or otherwise) for any costs (including costs of
removal and replacement), liabilities, lost profits, loss of good will or any other general, direct, special, incidental or
consequential damages incurred by Purchaser in connection with the Contract or any product purchased thereunder, in all
cases irrespective of whether Seller was advised of the possibility of such liability.
19. INDEMNIFICATION. Purchaser agrees to indemnify, defend and hold Seller harmless from any and all demands, claims,
actions or judgments of a third party against Seller, directly or indirectly, relating to injury and/or death of any and all
persons and for loss of and/or damage to property arising out of Purchaser’s sale, re-sale and/or misuse of products and/or
Purchaser’s negligence or willful misconduct. This indemnification obligation shall apply even in the event of the fault,
negligence or strict liability of Seller.
20. GOVERNMENTAL REGULATIONS. Seller warrants that no code, law, regulation, or ordinance of the United States, a state
or any other governmental authority or agency or any applicable Executive Order has been violated in the manufacture or
sale of the items covered by the Contract and warrants that the equipment, supplies and/or articles covered thereby
conform with all such requirements.
21. LAW. The Contract shall be governed by and shall be construed by the law of the State of New York, and any disputes
arising hereunder will be heard by a court of competent jurisdiction in New York.
Insulators