Composite OEM Products Porcelain PRODUCTS CATALOG Hardware Glass
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.
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.
Suspensions Polymer Dead Ends Spools Guy Strains Fiberglass Guy Strain Pins Posts Polymer Line Post Clamp Tops Station Posts Hardware
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 5 1/2 11/16 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 5 3/4 11/16 11/16 10 3/4
5 3/4 10 3/4
1/2 5/8 11/6 5 3/4 11/6 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 Polymer Dead Ends ball and socket PS015 PS025 PS035 PS045 PS069 PS015B PS025B PS035B PS035B80 PS69S1201 Polymer Dead Ends Y-Clevis - tongue Polymer Dead Ends Y-Clevis - ball PS69Y1201 PS69B1201 Polymer Dead Ends Tongue - tongue PS003 Content
Polymer dead ends Clevis - Tongue H C A 3 1/2" 1 1/16" 5/8 CATALOG NUMBER ANSI CLASS (C29.13-2000) PS015 PS025 PS035 DS-15 DS-28 DS-35 CRITICAL DISTANCES, inches Dry arcing distance Leakage distance 7 1/2 16 2/16 11 3/8 24 13/16 15 3/8 36 MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv DIMENSIONS ACCORDING TO DRAWING Total height H, inches Length C, inches Number of sheds, A 15736 15736 15736 7868 7868 7868 35 35 35 15 25 35 95 130 160 85 120 150 145 215 265 15 20 30 < 10 < 10 < 10 14 3/4 18 5/8 22 3/8 13 16 9/10 20 7/10 4 6 9 Note 1: Polymer housing: high voltage silicone Note 2: End fitting: nodular galvanized iron
Polymer dead ends Clevis - Tongue H C A Ø3 7/10 1 1/16" 5/8 CATALOG NUMBER ANSI CLASS (C29.13-2000) CRITICAL DISTANCES, inches Dry arcing distance Leakage distance PS045 DS-46 18 9/16 42 15/16 PS069 DS-69 24 56 1/8 MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv DIMENSIONS ACCORDING TO DRAWING Total height H, inches Length C, inches Number of sheds, A 15736 15736 7868 7868 35 35 46 69 205 251 165 204 290 360 30 45 < 10 < 10 25 11/16 30 3/4 24 29 10 13 Note 1: Polymer housing: high voltage silicone Note 2: End fitting: nodular galvanized iron
Polymer dead ends Ball and socket H C A Ø3 1/2 CATALOG NUMBER ANSI CLASS (C29.13-2000) PS015B PS025B PS035B DS-15 DS-28 DS-35 CRITICAL DISTANCES, inches Dry arcing distance Leakage distance 7 1/2 16 2/16 11 3/8 24 13/16 15 3/8 36 MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv DIMENSIONS ACCORDING TO DRAWING Total height H, inches Length C, inches Number of sheds, A 15736 15736 15736 7868 7868 7868 35 35 35 15 25 35 95 130 160 85 120 150 145 215 265 15 20 30 < 10 < 10 < 10 13 1/2 17 3/10 21 1/10 13 16 4/5 20 3/5 4 6 9 Note 1: Polymer housing: high voltage silicone Note 2: End fitting: nodular galvanized iron
Polymer dead ends Ball and socket 21 1/10" 20 6/10" 3 6/10" CATALOG NUMBER ANSI CLASS (C29.13-2000) CRITICAL DISTANCES, inches Dry arcing distance Leakage distance MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv PS035B80 DS-35 15 3/8 42 15/16 17984 8992 35 35 160 150 265 30 < 10 Note 1: Polymer housing: high voltage silicone Note 2: End fitting: nodular galvanized iron
Polymer dead ends Ball and socket 32 3/5 31 3/10 A Ø3 1/2 CATALOG NUMBER ANSI CLASS (C29.13-2000) CRITICAL DISTANCES, inches Dry arcing distance Leakage distance MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv PS69S1201 DS-69 24 56 1/8 27000 13500 35 69 251 204 360 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
Polymer dead ends Y Clevis - tongue 34 2/5 Ø7/10 32 1/5 A 45 Ø3 1/2 Ø20.0 CATALOG NUMBER ANSI CLASS (C29.13-2000) CRITICAL DISTANCES, inches Dry arcing distance Leakage distance MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv PS69Y1201 DS-69 24 56 1/8 27000 13500 35 69 251 204 360 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
Polymer dead ends Y Clevis - ball 858.0 Ø18.0 820.0 A 45 Ø95.0 CATALOG NUMBER ANSI CLASS (C29.13-2000) CRITICAL DISTANCES, inches Dry arcing distance Leakage distance MECHANICAL VALUES Specified mechanical load (SML) pounds Routine test load (RTL) pounds Torsional load, lbf.ft ELECTRICAL VALUES,kV Typical application voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover positive RADIO INFLUENCE DATA Test voltage, kv Maximum RIV 1000 khz, μv PS69B1201 DS-69 24 56 1/8 27000 13500 35 69 251 204 360 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
Polymer dead ends Tongue - tongue 13 1/2" 11 13/16" 3 1/2" CATALOG NUMBER CRITICAL DISTANCES, inches Dry arcing distnace Leakage distnace PS003 7 12 MECHANICAL VALUES Specified mechanical load (SML), pounds 15736 Routine test load (RTL), pounds) 7868 Torsional load, lbf.ft 35 ELECTRICAL VALUES,kV Typical application voltage 3 (Direct Current) Low-frequency dry flashover 74 Low-frequency wet flashover 54 RADIO INFLUENCE DATA Total height H, inches 13 1/2 Length C, inches 1113/16 Note 1: Polymer housing: high voltage silicone Note 2: End fitting: nodular galvanized iron
Spool
Spool 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 8441-70 8442-70 320333-70 8443-70 8444-70 320141-70 Content
Spool 2 1/4 1 3/4 7/8 3 1/8 1 3/4 15/16 3 13/4 15/16 1/2 3/4 3/4 R 3/8 2 1/8 R 7/16 3 R 11/16 3 8441-70 11/16 8442-70 11/16 320333-70 45/64 CATALOG NUMBER ANSI CLASS (C29.3-1986 rev.2002) 8441-70 53-1 8442-70 53-2 320333-70 - MECHANICAL VALUES, pounds Transverse str ength 2000 3000 3000 ELECTRICAL VALUES, kv Low-frequency dry flasho ver Low-frequency wet flasho ver, vertical Low-frequency wet flasho ver, horizontal 20 8 10 25 12 15 22 10 12 Note: ANSI 70 gr ay is standar d. Brown or white a vailable by r equest
Spool 3 1 3/4 15/16 4 1/8 4 2 7/8 15/16 3/4 2 7/8 15/16 1 3 3/16 R 7/16 3 3/4 R 5/8 4 1/8 R 7/16 8443-70 11/16 11/16 8444-70 320141-70 11/16 CATALOG NUMBER ANSI CLASS (C29.3-1986 rev.2002) 8443-70 53-3 8444-70 53-4 320141-70 53-5 MECHANICAL VALUES, pounds Transverse str ength 4000 4500 6000 ELECTRICAL VALUES, kv Low-frequency dry flasho ver Low-frequency wet flasho ver, vertical Low-frequency wet flasho ver, horizontal 25 12 15 25 12 15 35 18 25 Note: ANSI 70 gr ay is standar d. Brown or white a vailable by r equest
Guy strain
Guy 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 8502-70 8504-70 8506-70 8451-70 Content
Guy strain 2 7/8" 2 1/2" 3 1/2" 2 1/2" 1 3/4" 1 3/4" 4 1/4" 2 1/4" 3" 2 1/8" 5/8" 7/8" 8502-70 8504-70 CATALOG NUMBER ANSI CLASS (C29.4-1989 rev.2002) CRITICAL DISTANCES, inches Leakage distance 8502-70 8504-70 53-2 54-2 1 5/8 1 7/8 MECHANICAL VALUES, pounds Tensile strength ELECTRICAL VALUES, kv Low-fr equency dry flasho ver Low-frequency wet flasho ver Note: ANSI 70 gr ay is standar d. Brown or white available by request 10000 25 12 12000 30 15
Guy strain 3 1/2" 5 1/2" 4 1/16" 2 3/8" 3 3/8" 6 3/4" 2 5/8" 4 1/2" 2 3/8" 3 1/8" 1" 1" 8506-70 8451-70 CATALOG NUMBER ANSI CLASS (C29.4-1989 rev.2002) CRITICAL DISTANCES, inches Leakage distance 8506-70 8451-70 54-3 54-4 2 1/4 3 MECHANICAL VALUES, pounds Tensile strength ELECTRICAL VALUES, kv Low-fr equency dry flasho ver Low-frequency wet flasho ver Note: ANSI 70 gr ay is standar d. Brown or white available by request 20000 35 18 20000 40 23
Pin
Pin 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 - medium voltage Pin 3 1/4" 1 1/2" 3 1/2" 2 1/4" R 5/8" R 5/8" 3 3/4" 1 1/2" 3 3/8" 2 1/4" R 9/16" R9/16" 3 3/4 1 1/2 3 3/8 2 1/4 Ø 1 7/10 R 9/16 3 3/4" 6188R-70 4 3/4" 6184R-70 4 3/4 6184RA-70 4" 2 7/8" R 1" 4" 2 7/8" RF 1" R 9/16" RF 9/16" 4 3/8"1 3/4" 4 7/8"2" CATALOG NUMBER ANSI CLASS (C29.5-1984 rev. 2002) 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 5 19/32" 6183R-70 RADIO INFLUENCIA VOLTAGE DATA Low-frequency test voltage, RMS to gr ound, kv Maximum R IV at 1000 khz, μv 6188R -70 55-2 6184R -70 6184RA-70 6183R -70 7061R -70 55-3 55-3 55-4 55-5 3 3/8 4 1/2 4 1/2 5 6 1/4 5 7 7 9 12 4 5 5 5 6 2500 7.2 45 25 70 85 70 5 50 7" 7061R-70 2500 2500 3000 3000 11.5 11.5 13.2 15 55 30 90 110 90 55 30 90 110 90 65 35 105 130 95 80 45 130 150 115 10 10 10 15 50 50 50 100 Note 1: ANSI 70 gr ay is standar d. Brown or white a vailable by r equest Note 2: Conductive Glaz e - applied to head, side wir e grooves and pin hole for one-piece units Note 3: Neck Siz es - C & F according to industry standards Note 4: 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
High voltage pin 4 5/8 4 3/4" 3 1/2" R 1" R 5/8" 3 1/2 R 3/4 R 9/16 5 1/2" 2 1/4" 5 3/4 2 8 3/8" 7 1/2 320275R -70 8248R-70 5 1/8 5 1/4 4 4 R 3/4 R 3/4 R 9/16 R 9/16 6 1/2 2 7 1/2 2 9 10435R -70 10 1/2 8190R-70 CATALOG NUMBER ANSI CLASS (C29.5-1984 rev. 2002/C29.6-1996 rev. 2002 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 320275R -70 8248R -70 10435R -70 8190R -70 55-6 56-1 56-2 56-3 8 7 8 1/4 9 1/2 15 13 17 21 7 1/2 6 7 8 3000 2500 3000 3000 23 23 23 34.5 100 50 150 170 135 95 60 150 190 130 110 70 175 225 145 125 80 200 265 165 RADIO INFLUENCIA VOLTAGE DATA Low-frequency test voltage, RMS to gr ound, kv Maximum R IV at 1000 khz, μv Note 1: ANSI 70 gr ay is standar d. Brown available by r equest 22 100 15 100 22 100 30 200 Note 2: Conductive Glaz e - applied to head, side wir e grooves and pin hole for one-piece units Note 3: Neck Siz es - C & F according to industry standards Note 4: 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
Line 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 9325X-70 9335X-70 9345X-70 8415X-70 8417X-70 Pin post 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 top line post 5 7/8" 2 7/8" R 1" R 1" 9 3/16" 6 1/8" 2 7/8" R 1" R 1" 9325X-70 3/4"-10 UF 6 5/16" 2 7/8" R 1" R 1" 12 7/16" 15" 3/4"/10 UF 9335X-70 9345X-70 3/4"-10 UF CATALOG NUMBER ANSI CLASS (C29.7-1996 rev. 2002) 9325X-70 57-1 9335X-70 57-2 9345X-70 57-3 CRITICAL DISTANCES, inches Dry arcing distance 6.5 9.5 12.2 Leakage distance 14 22.5 29.5 MECHANICAL VALUES, pounds Cantilever strength 2800 2800 2800 ELECTRICAL VALUES, kv Typical application voltage 25 35 46 Low-frequency dry flashover 90 115 135 Low-frequency wet flashover 60 70 100 Critical impulse flashover, positive 130 179 214 RADIO INFLUENCE DATA Low-frequency test voltage, RMS to ground, kv Maximum RIV at 1000 khz, μv 15 22 30 100 100 200 Note 1: ANSI 70 gray is standard, Brown or white available by request Note 2: can be requested with M20 thread size Note 3: Available with short or long stud, sold separately
Tie top line post 7" 6" 1 1/2" 7 1/2" 6" 1 1/2" 20 1/4" 21 1/4" 8416X-70 3/4-10 UF 8417X-70 3/4-10 UF CATALOG NUMBER 8416X-70 8417X-70 ANSI CLASS (C29.7-1996 rev. 2002) 57-4 57-5 CRITICAL DISTANCES, inches Dry arcing distance 14.5 17.25 Leakage distance 40 45 MECHANICAL VALUES, pounds Cantilever strength 2800 2800 ELECTRICAL VALUES, kv Typical application voltage 55 66 Low-frequency dry flashover 140 160 Low-frequency wet flashover 110 130 Critical impulse flashover, positive 230 265 RADIO INFLUENCE DATA Low-frequency test voltage, RMS to ground, kv 44 44 Maximum RIV at 1000 khz, μv 200 200 Note 1: ANSI 70 gray is standard, Brown or white available by request Note 2: can be requested with M20 thread size Note 3: Available with short or long stud, sold separately
Pin post 6 2 7/8 R 1 R 3/4 1 7 1/2 320331-70 CATALOG NUMBER 320331-70 CRITICAL DISTANCES, inches Dry arcing distance 9 Leakage distance 15.5 MECHANICAL VALUES, pounds Cantilever strength 3000 ELECTRICAL VALUES, kv Typical application voltage 25 Low-frequency dry flashover 100 Low-frequency wet flashover 70 Critical impulse flashover, positive 155 Critical impulse flashover, negative 190 Low voltage puncture voltage 160 RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv 20 Maximum RIV at 1000 khz, μv 100 Note: ANSI 70 gray is standard. Brown or white available by request
Distribution post C Neck 4 4/5 2 1/4 R 1 R 1 F Neck 4 4/5 2 7/8 R 1 R 1 C Neck 5 2 1/4 R 1 R 1 F Neck 5 2 7/8 R 1 R 1 7.6 7.8 9 9" 3/4-10 UF 3/4-10 UF 4315X-70 4315PX-70 4320X-70 3/4-10 UF 4320PX-70 3/4-10 UF C Neck 5 5/32 2 1/4 R 1 F Neck 5 5/32 2 7/8 R 1 C Neck 5 2/10 2 2/10 R1" R1" F Neck 4 5/10" 2 9/10" R1" R1" R 1 R 1 9 1 1/16 9 1 1/16 11" 11" 4327X-70 3/4-10 UF 4327PX-70 3/4-10 UF 3/4-10 UF 4335PX-70 4335X-70 3/4-10 UF CATALOG NUMBER 4315X-70 4315PX-70 4320X-70 4320PX-70 CRITICAL DISTANCES, inches Dry arcing distance 5 5 3/4 7 5/8 Leakage distance 7 1/2 11 15 4327X-70 4335X-70 4327PX-70 4335PX-70 8.27 18.21 MECHANICAL VALUES, pounds Cantilever strength 2000 2000 1500 ELECTRICAL VALUES, kv Typical application voltage 15 20 27 Low-frequency dry flashover 65 80 95 Low-frequency wet flashover 40 55 65 Critical impulse flashover, positive 100 110 140 RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv 10 15 20 Maximum RIV at 1000 khz, μv 50 50 50 1000 35 110 80 165 22 100 Note 1: ANSI 70 gray is standard, Brown or white available by request Note 2: Available with short or long stud, sold separately
Polymer Line Post
POLYMER LINE POST GAMMA Polymer Distribution Line Post provide superior support and electrical insulation on overhead distribution lines, conductor jumpers or leads. They can be installed horizontally or vertically on metal, concrete or wooden structures. The core of the insulator is made of a corrosion resistant epoxy resin fiberglass rod constructed exclusively for electrical and mechanical applications. Housing and sheds consist of a one-piece injection molded composite material that chemically bonds to the core rod. This creates a water-tight seal between the polymer and the rod that is impervious to moisture penetration. The composite material itself is made of silicone rubber with additives to enhance performance in contaminated environments and under a variety of conditions such as rain, ice, sand and salt. The line end of GAMMA s Polymer Line Post Insulator is available in two configurations: Hot Dip Galvanized Iron Casting or Porcelain. The porcelain end fitting provides superior leakage distance and reduced unit weight. Both are sealed to prevent water from penetrating to the fiberglass core GAMMA Polymer Line Post are designed, manufactured and tested according to ANSI standard C29.18. Polymer Line Post Insulator for distribution PL015 PL015H PL028 PL028H PL035 PL035H PL046 PL046H Content
Polymer line post for distribution Hot dip galvanized Steel Ø2 4/5 R1 Porcelain Ø23 R 3/5 11/10 Ø1 7/10 1 1/10 2 3/10 11 3/10 Ø1 7/10 2 3/10 10 Ø3 Ø4 2/5 Ø5 3/5 Ø 3.0 Ø4 2/5 Ø5 3/5 PL015 STANDARD VERSION PL015H *HYBRID VERSION CATALOG NUMBER ANSI (C29.18) Class Neck type CRITICAL DISTANCES, inches Arcing distance Leakage distance MECHANICAL VALUES, Lb SCL Maximum density cantilever load Tensile strength ELECTRICAL VALUES,kV Rated voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover, positive Critical impulse flashover, negative PL015 51-1F F 6 1/2 13 7/10 5,000 1,348 5,000 15 85 55 150 155 PL015H 6 3/4 14 7/10 3,000 1,348 3,000 15 85 55 150 155 RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv Maximum RIV at 1,000 khz, μv DIMENSIONS ACCORDING TO DRAWING Center hole nominal thread size Note1: Dimensions in inches. * Combines a ceramic head and silicone elastomer housing properties superior leakage distance and reduced unit weight. Housing: High voltage silicone - High temperature vulcanized (HTV). Fittings: Hot dip galvanized steel. 10 4 3/4 10 4 3/4
Polymer line post for distribution Hot dip galvanized Steel Ø 2 4/5 R 1 Porcelain Ø2 3/10 Ø7/10 Ø1 4/5 13 7/10 Ø7/10 Ø2 4/5 Ø2 3/10 12 2/5 Ø2 3/10 Ø3 Ø 4 2/5 Ø5 1/5 Ø3 Ø 4 2/5 Ø5 1/5 PL028 STANDARD VERSION PL028H *HYBRID VERSION CATALOG NUMBER ANSI (C29.18) Class Neck type CRITICAL DISTANCES, inches Arcing distance Leakage distance PL028 51-2F F 8 4/5 22 PL028H 9 7/32 22 4/5 MECHANICAL VALUES, Lb SCL Maximum density cantilever load Tensile strength ELECTRICAL VALUES,kV Rated voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover, positive Critical impulse flashover, negative RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv Maximum RIV at 1,000 khz, μv DIMENSIONS ACCORDING TO DRAWING Center hole nominal thread size 5,000 1,348 5,000 3,000 1,348 3,000 Note1: Dimensions in inches. * Combines a ceramic head and silicone elastomer housing properties superior leakage distance and reduced unit weight. Housing: High voltage silicone - High temperature vulcanized (HTV). Fittings: Hot dip galvanized steel. 29 100 75 175 190 10 4 3/4 29 100 75 175 190 10 4 3/4
Polymer line post for distribution Hot dip galvanized Steel Ø 2 4/5 R 1 Porcelain Ø2 3/10 R3/5 Ø7/10 1 4/5 2 3/10 Ø 7/10 1 4/5 2 3/10 16 1/10 14 4/5 Ø3 Ø4 2/5 Ø5 3/5 PL035 STANDARD VERSION Ø3 Ø4 2/5 Ø5 3/5 PL035H *HYBRID VERSION CATALOG NUMBER ANSI (C29.18) Class Neck type CRITICAL DISTANCES, inches Arcing distance Leakage distance PL035 51-3F F 11 1/5 30 1/4 PL035H 11 9/16 30 3/4 MECHANICAL VALUES, Lb SCL Maximum density cantilever load Tensile strength ELECTRICAL VALUES,kV Rated voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover, positive Critical impulse flashover, negative RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv Maximum RIV at 1,000 khz, μv DIMENSIONS ACCORDING TO DRAWING Center hole nominal thread size 5,000 1,348 5,000 Note1: Dimensions in inches. * Combines a ceramic head and silicone elastomer housing properties superior leakage distance and reduced unit weight. Housing: High voltage silicone - High temperature vulcanized (HTV). Fittings: Hot dip galvanized steel. 35 130 95 210 230 10 4 3/4 3,000 1,348 3,000 35 130 95 210 230 10 4 3/4
Polymer line post for distribution Hot dip galvanized Steel Ø2 4/5 R1 Porcelain Ø2 4/5 R3/5 Ø1 7/10 1 1/10 18 2/5 Ø7/10 1 1/10 17 1/5 2 3/10 2 3/10 CATALOG NUMBER ANSI (C29.18) Class Neck type Ø3 Ø 4 2/5 Ø5 3/5 PL046 STANDARD VERSION CRITICAL DISTANCES, inches Arcing distance Leakage distance Ø3 Ø 4 2/5 Ø5 3/5 PL046H *HYBRID VERSION PL046 51-4F F 13 3/5 38 1/2 PL046H 13 15/16 38 13/16 MECHANICAL VALUES, Lb SCL Maximum density cantilever load Tensile strength ELECTRICAL VALUES,kV Rated voltage Low-frequency dry flashover Low-frequency wet flashover Critical impulse flashover, positive Critical impulse flashover, negative RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv Maximum RIV at 1,000 khz, μv DIMENSIONS ACCORDING TO DRAWING Center hole nominal thread size 5,000 1,348 5,000 Note1: Dimensions in inches. * Combines a ceramic head and silicone elastomer housing properties superior leakage distance and reduced unit weight. Housing: High voltage silicone - High temperature vulcanized (HTV). Fittings: Hot dip galvanized steel. 46 148 120 250 270 10 4 3/4 3,000 1,348 3,000 46 148 120 250 270 10 4 3/4
Clamp top
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 4220-70 4225-70 4235-70 4245-70 Clamp top horizontal cup base type 3620-70 3625-70 3635-70 3645-70 3720-70 3725-70 3735-70 3745-70
Clamp top 5/8-11 NC 5/8-11 NC 5 13/16 9 5/16 6 1/8 10 43/64 3/4-10 UF 4220-70 3/4-10 UF 4225-70 5/8-11 NC 5/8-11 NC 6 5/8 6 3/8 14 5/64 16 5/8 4235-70 3/4-10 UF 3/4-10 UF 4245-70 CATALOG NUMBER ANSI CLASS (C29.7-1996 rev. 2002) CRITICAL DISTANCES, inches Dry arcing distance 5 6.5 9.5 12.25 Leakage distance 10 14 22 29 MECHANICAL VALUES, pounds Cantilever strength 2800 2800 2800 2800 Tensión strength 5000 5000 5000 5000 ELECTRICAL VALUES, kv Typical application voltage 20 25 35 45 Low-frequency dry flashover 70 80 110 125 Low-frequency wet flashover 50 60 85 100 Critical impulse flashover, positive 100 130 180 210 RADIO INFLUENCE VOLTAGE DATA Low-frequency test voltage, RMS to ground, kv 15 15 22 30 Maximum RIV at 1000 khz, μv 50 100 100 200 Note 1: ANSI 70 gray is standard. Brown available by request Note 2: LN = Lock nut / LNC= Lock nut with trunnion bolt Note 3: Available with short or long stud, sold separately 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
Clamp top Horizontal cup Base type 14 7.7 3620-70 3625-70 3635-70 3645-70 Note 1: Note 2: Note 3:
Ø 6 1/8 Ø19/32 Clamp top Horizontal gain Base type 5/8-11 NC 5/8-11 NC 11 13/16 11 3/8 Ø 7/8 13 13/16 5/8-11 NC 5/8-11 NC 11 13/16 Ø7/8 Ø6 3/8" 11 13/16 Ø7/8 14 11/16" 17 13/64" 17 19 13/16 Note 1: Note 2:
Station post INSULATORS
Station post station post The GAMMA and GAMMA-CERISOL brand of ANSI solid core porcelain station-post 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, 95kV BIL Station post type, 110kV BIL 202SU0095 222HU0095 205SU0110 225HU0110 Station post type, 750kV BIL Station post type, 900kV BIL 291SU0750 295HU0750 304SU0900 308HT0900 308HU0900 Small station post 8606 8607 8608 8609 8610 Station post type, 150kV BIL Station post type, 200kV BIL Station post type, 250kV BIL 208SU0150 227HU0150 210SU0200 231HU0200 214SU0250 267HU0250 Station post type, 1050kV BIL Station post type, 1300kV BIL 312ST1050 312SU1050 316HT1050 316HU1050 362EU1050 324ST1300 324SU1300 367HT1300 368EU1300 369ET1300 Station post type, 350kV BIL Station post type, 550kV BIL Station post type, 650kV BIL 216SU0350 278HU0350 286SU0550 287HU0550 288SU0650 289HU0650 Station post type, 1470kV BIL Station post type, 1550kV BIL Station post type, 1800kV BIL 330SU1470 371HT1470 372EU1470 373ET1470 379HT1550 391ST1800 Content
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. Hardware 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. Glaze 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. 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!
Station-post Type, 95 kv BIL 4 Threads Ø1/2" - 13 4 Threads Ø5/8" - 11 7 1/2" 10" 3" Ø4 1/4" Ø7" TR-202 STANDARD STRENGTH UNIT 5" Ø6.25" Ø7.24" TR-222 HIGH STRENGTH UNIT CATALOG NUMBER 202SU0095 222HU0095 ANSI CLASS C29.9-1983 (R2002, R2012) TR-202 TR-222 CRITICAL DISTANCES, inches Leakage distance 10 1/2 10 1/2 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 2000 2000 4000 4000 Tensile strength 7000 15000 Torsion strength, inch-pounds Compression strength 6000 10000 12000 20000 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: can be ordered with M12 thread size. Contact your GAMMA sales representative for additional information. 7.5 105 30 95 5 50 7.5 105 30 95 5 50
Station-post Type, 110 kv BIL 4 Threads Ø 1/2" - 13 4 Threads Ø 5/8" - 11 10" 12" 3" 5" Ø4 1/4" Ø6.25" Ø7" Ø7.24" TR-205 STANDARD STRENGTH UNIT TR-225 HIGH STRENGTH UNIT CATALOG NUMBER 205SU0110 225HU0110 ANSI CLASS C29.9-1983 (R2002, R2012) TR-205 TR-225 CRITICAL DISTANCES, inches Leakage distance 15 1/2 15 1/2 MECHANICAL VALUES, pounds Cantilever strength, upright 2000 4000 Cantilever strength, underhung 2000 4000 Tensile strength 8500 20000 Torsion strength, inch-pounds 7000 14000 Compression strength 10000 20000 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: can be ordered with M12 thread size. Contact your GAMMA sales representative for additional information. 15 125 45 110 15 125 45 110 10 10 50 50
Station-post Type, 150 kv BIL 4 Threads Ø 1/2" - 13 4 Threads Ø 5/8" - 11 14" 15" 3" Ø4 1/4" Ø6 1/2" 5" Ø6.31" Ø8.46" TR-208 STANDARD STRENGTH UNIT TR-227 HIGH STRENGTH UNIT CATALOG NUMBER 208SU0150 227HU0150 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-208 TR-227 Leakage distance 24 24 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 2000 2000 4000 4000 Tensile strength 10000 20000 Torsion strength, inch-pounds Compression strength 8000 10000 16000 20000 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: can be ordered with M12 thread size. Contact your GAMMA sales representative for additional information. 23 170 60 150 23 170 60 150 15 15 100 100
Station-post Type, 200 kv BIL 4 Threads Ø 1/2" - 13 4 Threads Ø 5/8" - 11 18" 20" 3" 5" Ø4 1/4" Ø6.31" Ø7 1/2" Ø8.58" TR-210 STANDARD STRENGTH UNIT TR-231 HIGH STRENGTH UNIT CATALOG NUMBER 210SU0200 231HU0200 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-210 TR-231 Leakage distance 37 37 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 2000 2000 4000 4000 Tensile strength 12000 25000 Torsion strength, inch-pounds Compression strength 10000 15000 20000 30000 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: can be ordered with M12 thread size. Contact your GAMMA sales representative for additional information. 34.5 225 80 200 34.5 225 80 200 22 22 100 100
Station-post Type, 250 kv BIL 4 Threads Ø 1/2" - 13 4 Threads Ø 5/8" - 11 22" 24" 3" Ø4 1/4" Ø7" 5" Ø6.31" Ø8.74" TR-214 STANDARD STRENGTH UNIT TR-267 HIGH STRENGTH UNIT CATALOG NUMBER 214SU0250 267HU0250 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-214 TR-267 Leakage distance 43 43 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 2000 2000 4000 4000 Tensile strength 14000 25000 Torsion strength, inch-pounds Compression strength 12000 15000 20000 60000 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: can be ordered with M12 thread size. Contact your GAMMA sales representative for additional information. 46 280 100 250 46 280 100 250 30 30 200 200
Station-post Type, 350 kv BIL 4 Threads Ø1/2" - 13 4 Threads Ø 5/8" - 11 30" 30" 3" Ø4 1/4" Ø8.1" 5" Ø6.3" Ø9.1" TR-216 STANDARD STRENGTH UNIT TR-278 HIGH STRENGTH UNIT CATALOG NUMBER 216SU0350 278HU0350 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-216 TR-278 Leakage distance 72 72 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 1500 1500 3000 3000 Tensile strength 16000 25000 Torsion strength, inch-pounds Compression strength 15000 25000 40000 60000 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: can be ordered with M12 thread size. Contact your GAMMA sales representative for additional information. 69 390 145 350 69 390 145 350 44 44 200 200
Station-post Type, 550 kv BIL 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC 45 45 CATALOG NUMBER Ø6.22 Ø8.46 TR-286 STANDARD STRENGTH UNIT Ø6.3 Ø9.4 TR-287 HIGH STRENGTH UNIT 286SU0550 287HU0550 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-286 TR-287 Leakage distance 99 99 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 1700 1700 2600 2600 Tensile strength 20000 25000 Torsion strength, inch-pounds Compression strength 40000 60000 90000 75000 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 610 230 550 Note 1: ANSI 70 gray is standard. Brown available by request. Note 2: can be ordered with M16 thread size if 5/8-11UNC diameter. Contact your GAMMA sales representative for additional information. 610 230 550 73 73 200 200 21 21
Station-post Type, 650 kv BIL 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC 54 54 Ø6.22 Ø8.46 TR-288 STANDARD STRENGTH UNIT Ø6.3 Ø9.1 TR-289 HIGH STRENGTH UNIT CATALOG NUMBER 288SU0650 289HU0650 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-288 TR-289 Leakage distance 116 116 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 1400 1400 2200 2200 Tensile strength 20000 25000 Torsion strength, inch-pounds Compression strength 40000 60000 90000 75000 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 710 275 650 Note 1: ANSI 70 gray is standard. Brown available by request. Note 2: can be ordered with M16 thread size if 5/8-11UNC diameter. Contact your GAMMA sales representative for additional information. 710 275 650 88 88 200 200 25 25
Station-post Type, 750 kv BIL 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC 62 62 CATALOG NUMBER Ø6.22 Ø8.78 TR-291 STANDARD STRENGTH UNIT Ø6.3 Ø9.53 TR-295 HIGH STRENGTH UNIT 291SU0750 295HU0750 ANSI CLASS C29.9-1983 (R2002, R2012) CRITICAL DISTANCES, inches TR-291 TR-295 Leakage distance 132 132 MECHANICAL VALUES, pounds Cantilever strength, upright Cantilever strength, underhung 1200 1200 1850 1850 Tensile strength 20000 25000 Torsion strength, inch-pounds Compression strength 40000 60000 90000 75000 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 810 315 750 Note 1: ANSI 70 gray is standard. Brown available by request. Note 2: can be ordered with M16 thread size if 5/8-11UNC diameter. Contact your GAMMA sales representative for additional information. 810 315 750 103 103 500 500 27 27
Station-post Type, 900 kv BIL 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC UNIT 1 UNIT 1 UNIT 1 40 40 40 Ø9.33 80 80 80 UNIT 2 UNIT 2 UNIT 2 40 40 40 Ø6.22 Ø8.39 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 304SU0900 308HT0900 308HU0900 ANSI CLASS C29.9-1983 (R2002, R2012) TR-304 CRITICAL DISTANCES, inches Leakage distance 165 165 165 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 1010 385 900 Note 1: ANSI 70 gray is standard. Brown available by request. Note 2: can be ordered with M16 thread size if 5/8-11UNC diameter. Contact your GAMMA sales representative for additional information. TR-308 TR-308 950 950 1450 1450 1450 20000 25000 25000 40000 60000 90000 75000 90000 75000 1010 385 900 1010 385 900 146 146 146 500 500 500 20 20 20 20 20 20
Station-post Type, 1050 kv BIL 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC UNIT 1 UNIT 1 46 46 92 92 UNIT 2 UNIT 2 46 48 Ø6.22 Ø8.46 TR-312 ST STANDARD STRENGTH UNIT Ø6.22 Ø8.46 TR-312 SU STANDARD 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 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: can be ordered with M16 thread size if 5/8-11UNC diameter. Contact your GAMMA sales representative for additional information. 312ST1050 TR-312 198 800 20000 40000 60000 1210 455 1050 146 500 312SU1050 TR-312 198 800 800 20000 40000 60000 1210 455 1050 146 500 21 21 21 21
Station-post Type, 1050 kv BIL 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 5/8" - 11UNC 4 Tapped holes Ø 3/4" - 11UNC UNIT 1 UNIT 1 UNIT 1 46 46 46 Ø8.98 Ø10.24 92 92 92 UNIT 2 UNIT 2 UNIT 2 46 46 46 Ø6.3 Ø9.41 TR-316 HT HIGH STRENGTH UNIT Ø6.3 Ø9.41 TR-316 HU HIGH STRENGTH UNIT Ø8.66 Ø10.43 TR-362 EU EXTRA - HIGH STRENGTH UNIT CATALOG NUMBER 316HT1050 316HU1050 362EU1050 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 TR-316 198 1250 25000 90000 75000 1210 455 1050 146 500 Note 1: ANSI 70 gray is standard. Brown available by request. Note 2: can be ordered with M16 thread size if 5/8-11UNC diameter. Note 3: can be ordered with M20 thread size if 3/4-10UNC diameter. Contact your GAMMA sales representative for additional information. TR-316 198 1250 1250 25000 90000 75000 1210 455 1050 146 500 TR-362 198 2300 2300 40000 120000 100000 1210 455 1050 146 500 21 21 21 21 21 21
Station-post Type, 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 Ø8.46 106.0 106.0 UNIT 2 UNIT 2 52.83 52.83 Ø6.3 Ø9.06 TR-324 ST STANDARD STRENGTH UNIT Ø6.3 Ø9.06 TR-324 SU STANDARD 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 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 324ST1300 TR-324 231 1000 25000 90000 75000 Note 1: ANSI 70 gray is standard. Brown available by request. Note 2: can be ordered with M16 thread size if 5/8-11UNC diameter. Contact your GAMMA sales representative for additional information. 1410 525 1300 220 1000 25 28 324SU1300 TR-324 231 1000 1000 25000 90000 75000 1410 525 1300 220 1000 28 28