Products
Catalog
GAMMA INSULATORS CORPORATION is the Electrical Grade Porcelain and Composite
Insulator division of the multinational Corona Group, a 125 year old company with over
10,000 employees, and sales in excess of $1.5 Billion worldwide. Corona is one of the
largest and most stable platforms for insulator manufacturing in the world.
Corona´s state of the art manufacturing facilities utilize the latest technologies and, are
all certified to the most recent ISO 9001, 14001 and OHSAS 18001 standards. We employ
world class manufacturing tools and management systems such as TPM, Lean
Manufacturing, DFSS and Six Sigma, among others to produce the best products with
the least impact on the environment.
LAPP INSULATORS by GAMMA
Lapp Insulators Company is known worldwide for superior performing products,
exacting standards, and an unmatched obsession with quality. So when Lapp chose
GAMMA to manufacture a product that would bear the Lapp name brand, they chose a
company that has experience selling to utilities, OEM´s, and distributors in more than 20
countries worldwide, and could meet their high expectations.
GAMMA has been manufacturing insulators for Lapp's US and Canadian markets for
nearly 10 years.
GAMMA is one of the greenest insulator manufacturers in the world. We are a vertically
integrated company and control the process from the extraction of raw materials, to the
manufacture of the insulator. Few companies can make this claim, but our engineers
have made this possible.
We look forward to being your first choice for high performance electrical grade
insulators.
Sincerely,
Mauricio Yepes
CEO
Why GAMMA...
Experience
Time tested and customer approved, Gamma Insulator Company has been supplying insulators
for critical transmission and distribution line applications since 1962. That experience goes into
every insulator we manufacture making Gamma products an internationally recognized
insulator solution.
Quality, Service, and Support
We take pride in our people and our product. We believe that product quality is as dependent on
our people as much as it is in the process. While Gamma employs state of the art equipment and
utilizes the latest continual process techniques, we also invest in our people. The result is a
highly qualified and well trained work force that takes pride in their work, and is proud of the
result.
Location and Logistics
Gamma's manufacturing facility is ideally located to allow for the most responsive order
fulfillment in the industry. With an increasing global supply base, delivery of high quality
insulators can take weeks or even months. That time is shortened for insulators manufactured
by Gamma.
Located in Colombia South America, and nearly on the equator, Gamma's manufacturing facility
provides equal access to both Atlantic and Pacific Ocean ports. Minimal inland transportation
and the ability to ship our product east as easily as to go west, Gamma can react faster to more
customers, than any other insulator manufacturer in the world.
At GAMMA, we understand that the product sale is only the beginning of a relationship based on
total customer satisfaction.
Dead Ends
Note 2: The insulators can be requested with extra hot-dip galvanized layer in caps and bolts for
contaminated areas
Note 1: ANSI 70 gray is standard. Brown available by request
RADIO INFLUENCE VOLTAGE DATA
Critical impulse flashover, negative
Maximum RIV at 1000 kHz, µVLow-frequency test voltage, RMS to ground
Low-frequency puncture voltage
MECHANICAL VALUES
Leakage distance
Low-frequency wet flashoverLow-frequency dry flashover
Mech, impact strength,inch.poundsCombined M & E strength, pounds
Routine proof test load, poundsTime load test value, pounds
Critical impulse flashover, positive
ELECTRICAL VALUES, kV
Dry arcing distance
CRTICAL DISTANCES, inches
ANSI CLASS (C29.2- 1992)
CATALOG REFERENCE NUMBER
InsulatorsDead Ends
Maximun working load, pounds
507.5
8090
3060
100
74
52-9A
6815-70
52-1
6605-70
100
7.550
80100
3060
6000 60005000 5000
10000 1000045 45
5000 5000
6605-70
11/1
6”
11/1
6”
11/16”
11/16”
5/8
”
5/8
”
5 1/2"
1/2"
7/8"6 1/2"
6815-70
4 3/4"
7/8"
6 1/4"
4.57
1/2"
Polymer
Dead Ends
Clevis - TonguePolymer Dead Ends
Test voltage, kVMaximum RIV 1000 kHz, µV
Length C, inchesNumber of sheds, A
DIMENSIONS ACCORDING TO DRAWING
Total height H, inches
Low-frequency wet flashoverCritical impulse flashover positive
ELECTRICAL VALUES, kV
Typical application voltage
RADIO INFLUENCE DATA
MECHANICAL VALUES
Specified mechanical load (SML) poundsRoutine test load (RTL) poundsTorsional load, lbf.ft
Dry arcing distance
CRITICAL DISTANCES, inches
Leakage distance
ANSI CLASS (C29.13 - 2000)
CATALOG NUMBER
Low-frequency dry flashover
15 20< 10
30
13 16 9/10 20 7/104 6 9
14 3/4 18 5/8 22 3/8
14585
15
215120
25
265150
35
15736 157367868 7868 7868
15736
35 35 35
7 1/216 2/16
11 3/824 13/16
15 3/836
DS-15 DS-28 DS-35
PS015 PS025 PS035
< 10 < 10
95 130 160
1 1/16"
H
A
C
3 1/2"
Note 1: Polymer housing: silicone “high voltage”Note 2: End fitting: nodular iron galvanized
Clevis - TonguePolymer Dead Ends
Test voltage, kVMaximum RIV 1000 kHz, µV
Length C, inchesNumber of sheds, A
DIMENSIONS ACCORDING TO DRAWING
Total height H, inches
Low-frequency wet flashoverCritical impulse flashover positive
ELECTRICAL VALUES, kV
Typical application voltage
RADIO INFLUENCE DATA
MECHANICAL VALUES
Specified mechanical load (SML) poundsRoutine test load (RTL) poundsTorsional load, lbf.ft
Dry arcing distance
CRITICAL DISTANCES, inches
Leakage distance
ANSI CLASS (C29.13 - 2000)
CATALOG NUMBER
Low-frequency dry flashover
30 45
24 2910 13
25 11/16 30 3/4
290165
46
360204
69
157367868 7868
15736
35 35
18 9/1642 15/16
2456 1/8
DS-46 DS-69
PS045 PS069
< 10 < 10
205 251
Note 1: Polymer housing: silicone “high voltage”Note 2: End fitting: nodular iron galvanized
1 1/16"
H
AC
Ball and SocketPolymer Dead Ends
Test voltage, kVMaximum RIV 1000 kHz, µV
Low-frequency wet flashoverCritical impulse flashover positive
ELECTRICAL VALUES, kV
Typical application voltage
RADIO INFLUENCE DATA
MECHANICAL VALUES
Specified mechanical load (SML) poundsRoutine test load (RTL) poundsTorsional load, lbf.ft
Dry arcing distance
CRITICAL DISTANCES, inches
Leakage distance
ANSI CLASS (C29.13 - 2000)
CATALOG NUMBER
Low-frequency dry flashover
15< 10
14585
15
157367868
35
7 1/2 16 2/16
DS-15
PS015B
95
A
Ø91.0
Note 1: Polymer housing: silicone “high voltage”Note 2: End fitting: nodular iron galvanized
Ball and socketPolymer Suspensions
30
265150
35
786815736
35
15 3/836
DS-35
PS035B
< 10
160
3 6/10"
21 1/10"
20 6/10"
Test voltage, kVMaximum RIV 1000 kHz, µV
Low-frequency wet flashoverCritical impulse flashover positive
ELECTRICAL VALUES, kV
Typical application voltage
RADIO INFLUENCE DATA
MECHANICAL VALUES
Specified mechanical load (SML) poundsRoutine test load (RTL) poundsTorsional load, lbf.ft
Dry arcing distance
CRITICAL DISTANCES, inches
Leakage distance
ANSI CLASS (C29.13 - 2000)
CATALOG NUMBER
Low-frequency dry flashover
Note 1: Polymer housing: silicone “high voltage”Note 2: End fitting: nodular iron galvanized
Ball and socket
30
265150
35
899217984
35
15 3/836
DS-35
PS035B80
< 10
160
3 6/10"
21 1/10"
20 6/10"
Test voltage, kVMaximum RIV 1000 kHz, µV
Low-frequency wet flashoverCritical impulse flashover positive
ELECTRICAL VALUES, kV
Typical application voltage
RADIO INFLUENCE DATA
MECHANICAL VALUES
Specified mechanical load (SML) poundsRoutine test load (RTL) poundsTorsional load, lbf.ft
Dry arcing distance
CRITICAL DISTANCES, inches
Leakage distance
ANSI CLASS (C29.13 - 2000)
CATALOG NUMBER
Low-frequency dry flashover
Note 1: Polymer housing: silicone “high voltage”Note 2: End fitting: nodular iron galvanized
Polymer Suspensions
13 1/2"
11 13/16"
3 1/2"
Tongue - Tongue
Length C, inches 1113/16Number of sheds 3
DIMENSIONS ACCORDING TO DRAWING
Total height H, inches 13 1/2
Low-frequency wet flashover
ELECTRICAL VALUES, kV
Typical application voltage
54
3 (Direct Current)
MECHANICAL VLAUES
Specified mechanical load (SML), poundsRoutine test load (RTL), pounds) 7868
15736
Torsional load, lbf.ft 35
Dry arcing distnace
CRITICAL DISTANCES, inches
Leakage distnace7
12
PS003CATALOG NUMBER
Low-frequency dry flashover 74
Application in metropolitan transportation
systems with direct current
Note 1: Polymer housing: silicone “high voltage”Note 2: End fitting: nodular iron galvanized
Polymer Suspensions
Suspensions
GAMMA Porcelain Suspension Insulators
Transmission lines are often referred to as the “backbone” of the electrical system, and need rock
solid components to ensure long lasting reliability. Gamma's porcelain suspension insulators,
for use on high voltage and extra high voltage transmission lines, provide utilities with the
flexibility and reliability required for such critical applications.
Designed to meet and exceed both ANSI and IEC specifications, Gamma's porcelain suspension
insulators conform to the most current industry standards* for the greatest degree of flexibility
and consistency. However, that's where being “Standard” ends.
GAMMA MANUFACTURES ITS OWN PRODUCTS!! Gamma does not use subcontractors to
manufacture and brand label its product. Instead we use state of the art equipment and
processes to produce high quality porcelain suspension insulators, consistently, every time.
In addition, Gamma has the unique ability to control nearly every step of the process. In
conjunction with its parent company, “The Corona Group** we extract, transport, and process
much of the raw material used in our insulators. We employ the engineering and technical
expertise required to support our products, and own the equipment necessary to ensure our
porcelain suspension insulators meets our high standards for quality and conformance.
Gamma's start to finish process ownership, state of the art manufacturing, and world class
technical capabilities produces porcelain suspension that utilities can rely on with confidence.
There is no mystery or guesses about where your Gamma Suspension Insulators come from,
they come from GAMMA!
*Standards
Gamma Suspension Insulators conform to
ANSI (C29.1 and C29.2)
**Gamma Insulators Corporation….
is the electrical grade insulator division of THE CORONA GROUP, a 125 year old multinational
corporation with sales in excess of $1.5 billion annually. Corona's state of the art manufacturing
facilities utilize the latest manufacturing technologies, and are all certified to the most recent
ISO 9001, 14001, and OHSAS 18001 standards. We employ world class manufacturing tools and
management systems such as TPM, Lean Manufacturing, DFSS, and Six Sigma, to name a few, in
order to produce the high quality products you've come to expect from Corona Companies.
Ball and Socket Type Suspension Insulators
Note 4: Part numbers 8256 and 8257 comform to ANSI Class 52-3 specifications. However they carry higher strength
rating than that required by standard
5010
125
110130
5080
7500
750010000
5515000
5010
5010
5010
125
110130
5080
125
110130
8050
9000
900012000
18000
10000
1000013500
9020000
125
110130
8050
12500
1250015000
9025000
ANSI CLASS (C29.2 - 1992) 52-3
11 13/167 3/4
8255
52-352-3
8256 8257
52-5
8258
5 3/4"
10 3/4"
RADIO INFLUENCE VOLTAGE DATA
Critical impulse flashover, negative
Maximum RIV at 1000 kHz, µVLow-frequency test voltage, RMS to ground
Low-frequency puncture voltage
MECHANICAL VALUES
Leakage distance
Low-frequency wet flashover
Low-frequency dry flashover
Mech, impact strength,inch.poundsCombined M & E strength, pounds
Routine proof test load, poundsTime load test value, pounds
Critical impulse flashover, positive
ELECTRICAL VALUES, kV
Dry arcing distance
CRITICAL DISTANCES, inches
CATALOG REFERENCE NUMBER
Maximum working load, pounds
Note 3: The insulators can be requested with zinc sleeve ball bolt for contaminated areas
Note 2: The insulators can be requested with extra hot-dip galvanized layer in caps and bolts for contaminated areas
Note 1: ANSI 70 gray is standard. Brown available by request
11 13/167 3/4
11 13/167 3/4
11 13/167 3/4
55
Clevis TypeSuspension Insulators
Note 3: Part numbers 8265 and 8267, can be requested with zinc sleeve ball bolt for contaminated areas
Note 1: ANSI 70 gray is standard. Brown available by request
Note 2: The insulators can be requested with extra hot-dip galvanized layer in caps and bolts for contaminated areas
110
5010
5080
125130
7500
15000
100007500
55
52-4
7 3/411 13/16
8265
110
1050
50125130
80
1000090
1350010000
20000
7 3/411 13/16
52-4
8267
Note 4: Part number 8267 comform to ANSI Class 52-4 specifications. However it carry higher strengh rating than that
required by standard
RADIO INFLUENCE VOLTAGE DATA
Critical impulse flashover, negative
Maximum RIV at 1000 kHz, µVLow-frequency test voltage, RMS to ground
Low-frequency puncture voltage
MECHANICAL VALUES
Leakage distance
Low-frequency wet flashoverLow-frequency dry flashover
Mech, impact strength,inch.poundsCombined M & E strength, pounds
Routine proof test load, poundsTime load test value, pounds
Critical impulse flashover, positive
ELECTRICAL VALUES, kV
Dry arcing distance
CRITICAL DISTANCES, inches
ANSI CLASS (C29.2- 1992)
CATALOG REFERENCE NUMBER
Maximum, working load, pounds
5 3/4"
10 3/4"
1/2"
11/16"
11/16"
5/8"
11/16"
FOG Ball and Socket typeSuspension Insulators
Note 3: The insulators can be requested with zinc sleeve ball bolt for contaminated areas
5010
150
130160
60100
900012000
9018000
5010
5010
150
130160
10060
150
130160
60100
1000013500
2000090
1250015000
9025000
917
8250
917
917
8251 8252
5 3/4"
10 3/4"
9000 10000 12500
Note 2: The insulators can be requested with extra hot-dip galvanized layer in caps and bolts for contaminated areas
Note 1: ANSI 70 gray is standard. Brown available by request
RADIO INFLUENCE VOLTAGE DATA
Critical impulse flashover, negative
Maximum RIV at 1000 kHz, µVLow-frequency test voltage, RMS to ground
Low-frequency puncture voltage
MECHANICAL VALUES
Leakage distance
Low-frequency wet flashoverLow-frequency dry flashover
Mech, impact strength,inch.poundsCombined M & E strength, pounds
Routine proof test load, poundsTime load test value, pounds
Critical impulse flashover, positive
ELECTRICAL VALUES, kV
Dry arcing distance
CRITICAL DISTANCES, inches
CATALOG REFERENCE NUMBER
Maximum working load, pounds
130
100
150160
25000
12500
8262
5010
5010
5010
150
130160
10060
900012000
9018000
150
130160
60100
60
1000013500
9020000
15000
90
917
8260 8261
5/8"
10 3/4"
5 3/4"
125009000 10000
FOG Clevis typeSuspension Insulators
Note 3: The insulators can be requested with zinc sleeve ball bolt for contaminated areas
Note 2: The insulators can be requested with extra hot-dip galvanized layer in caps and bolts for contaminated areas
Note 1: ANSI 70 gray is standard. Brown available by request
RADIO INFLUENCE VOLTAGE DATA
Critical impulse flashover, negative
Maximum RIV at 1000 kHz, µVLow-frequency test voltage, RMS to ground
Low-frequency puncture voltage
MECHANICAL VALUES
Leakage distance
Low-frequency wet flashoverLow-frequency dry flashover
Mech, impact strength,inch.pounds)Combined M & E strength, pounds
Routine proof test load, poundsTime load test value, pounds
Critical impulse flashover, positive
ELECTRICAL VALUES, kV
Dry arcing distance
CRITICAL DISTANCES, inches
CATALOG REFERENCE NUMBER
Maximum working load, pounds
917
917
1/2"
11/6"
11/6"
Spools
SpoolInsulators
CATALOG REFERENCE NUMBER
ANSI CLASS (C29.3-1986 rev. 2002)
Transverse strength
MECHANICAL VALUES, pounds
ELECTRICAL VALUES, kV
53-1
2000
810
8441-70
Low-frequency dry flashoverLow-frequency wet flashover, verticalLow-frequency wet flashover, horizontal
Note: ANSI 70 gray is standard. Brown or white available by request
20
53-2
1215
8442-70
25
3000
53-5
1825
320141-70
35
53-3
1215
8443-70
25
4000
53-4
1215
8444-70
25
4500
-
1012
320333-70
22
3000 6000
8441-70
2 1/4”
1 3/4”
7/8”
11/16”
R 7/16”
2 1
/8”
8443-70
3”
1 3/4”
15/16”
3/4
”
R 7/16”
3 3
/16
”
11/16”
8444-70 320141-70
4 1
/8”
1”
2 7/8”
4”
15/16”
R 7/16”
11/16”
320333-70
13/4”
3/4
”
R 3/8”
3”
45/64”
3”
15/16”
8442-70
3 1/8”
1 3/4”
15/16”
3/4
”
R 11/16”
11/16”
3”
|
4 1/8”
2 7/8”
15/16”
R 5/8”
3”
3/4
”
11/16”
Guy Strains
CATALOG REFERENCE NUMBER
ANSI CLASS (C29.4-1989 rev. 2002) 54-1
1 5/8
8502-70
Low-frequency dry flashover
Note: ANSI 70 gray is standard. Brown available by request
10000
54-2
8504-70
12000
1 7/8
54-3
8506-70
20000
54-4
25 30 35 4012 15 18 23
8451-70
20000
2 1/4 3
CRITICAL DISTANCES, inchesLeakage distance
MECHANICAL VALUES, poundsTensile strength
ELECTRICAL VALUES, kV
Low-frequency wet flashover
Guy StrainInsulators
|
8502-70 8504-70
8506-70 8451-70
1 3/4"
2 1/2"
1 3/4"
3 1/2" 2 1/2"
5/8"
2 7/8"
2 1/8"4 1/4"
2 1/4"
3"
7/8"
2 3/8"
3 3/8"
5 1/2"
3 1/8"
1"
4 1/16"
3 1/2"
2 3/8"
6 3/4"
2 5/8"
1"
4 1/2"
Pins
Low - Medium Voltage PinInsulators
Note 2: Conductive Glaze - applied to head, side wire grooves and pin hole of one-piece unitsNote 3: Neck Sizes - “C” & “F” conform to industry standardsNote 4: Pin Hole Sizes - Standard 1” to 15 kV and ref. 320275R-70, 1 3/8” for the rest of 23 kV & 35 kV units
Low-frequency test voltage, RMS to ground, kVRADIO INFLUENCE VOLTAGE DATA
Maximum RIV at 1000 kHz, µV
Note 1: ANSI 70 gray is standard. Brown or white available by request
CATALOG REFERENCE NUMBER
ANSI CLASS (C29.5-1984 rev. 2002)
CRITICAL DISTANCES, inches
55-2
6188R-70
Dry arcing distanceLeakage distanceMinimum pin height
MECHANICAL VALUES, poundsCantilever strength
ELECTRICAL VALUES, kV
Low-frequency puncture voltageCritical impulse flashover, negative
Typical application voltageLow-frequency dry flashoverLow-frequency wet flashoverCritical impulse flashover, positive
6184R-70 6184RA-70 6183R-70 7061R-70
4 1/27
4
2500
7.2452570
70
10100
55-3 55-3 55-4 55-5
3 3/8 4 1/2 5 6 1/45 7 9 12
5 5 5 6
2500 2500 3000 3000
85
550
11.5 1513.211.5553090
11090
553090
11090
6535
10513095
8045
130150115
10 10 1550 50 50
6184RA-70
3 3/8”
3 3/4”
4 3/4”
2 1/4”
R 1 7/10”
R 9/16”
7061R-706183R-70
6184R-706188R-70
|
3 1/2"
2 1/4"
3 1/4" 1 1/2"
3 3/4"
R 5/8"
R 5/8"
3 3/8"
4 3/4"
3 3/4" 1 1/2"
2 1/4"
R 6/10"
R9/16"
4"
4 3/8" 1 3/4"
5 19/32"
2 7/8"
R 9/16"
R 1"
4 7/8" 2"
RF 1"
RF 9/16"
4"
2 7/8"
7"
Low-frequency test voltage, RMS to ground, kVRADIO INFLUENCE VOLTAGE DATA
Maximum RIV at 1000 kHz, µV
Note 1: ANSI 70 gray is standard. Brown available by request
CATALOG REFERENCE NUMBER
ANSI CLASS (C29.5-1984 rev. 2002 / C29.6-1996 rev. 2002)
CRITICAL DISTANCES, inchesDry arcing distanceLeakage distanceMinimum pin height
MECHANICAL VALUES, poundsCantilever strength
ELECTRICAL VALUES, kV
Low-frequency puncture voltageCritical impulse flashover, negative
Typical application voltageLow-frequency dry flashoverLow-frequency wet flashoverCritical impulse flashover, positive
320275R-70 8248R-70 10435R-70 8190R-70
815
22200
55-6 56-1 56-2 56-3
7 8 1/4 9 1/2 13 17 21
7 1/2 6 7 8
3000 2500 3000 3000
23 34.5232310050
150170135
9560
150190130
11070
175225145
12580
200265165
15 22 30100 100 100
Note 2: Conductive Glaze - applied to head, side wire grooves and pin hole of one-piece unitsNote 3: Neck Sizes - “C” & “F” conform to industry standardsNote 4: Pin Hole Sizes - Standard 1” to 15 kV and ref. 320275R-70, 1 3/8” for the rest of 23 kV & 35 kV units
320275R-70 8248R-70
4 5/8”
R 3/4”R 3/4”
R 9/16”
5 3/4”2”
10435R-70
4”
R 3/4”
R 9/16”
2”
9”
5 1/8”
8190R-70
5 1/4”
R 3/4”
R 9/16”
2”
4”
|
High Voltage PinInsulators
4 3/4"3 1/2"
R 1"
5 1/2" 2 1/4"
R 5/8"
8 3/8"
3 1/2”
Posts
CATALOG REFERENCE NUMBER
CRITICAL DISTANCES, inches
MECHANICAL VALUES, pounds
ELECTRICAL VALUES, kV
RADIO INFLUENCE VOLTAGE DATA
320331-70
Dry arcing distance 9Leakage distance 15.5
Cantilever strength 3000
Typical application voltage 25Low-frequency dry flashover 100Low-frequency wet flashover 70Critical impulse flashover, positiveCritical impulse flashover, negativeLow voltage puncture voltage
155190160
Low-frequency test voltage, RMS to ground, kV 20Maximum RIV at 1000 kHz, µV 100
Note: ANSI 70 gray is standard. Brown available by request
320331-70
2 7/8”
6”
1”
R 1”
R 3/4”
7 1/2”
|
PinpostInsulators
CATALOG REFERENCE NUMBER
CRITICAL DISTANCES, inches
MECHANICAL VALUES, pounds
ELECTRICAL VALUES, kV
RADIO INFLUENCE VOLTAGE DATA
Dry arcing distance 5 5 3/4 7 5/8Leakage distance 7 1/2 11 15
Cantilever strength 2000 2000 1500
Typical application voltage 15 20 27Low-frequency dry flashover 65 80 95Low-frequency wet flashover 40 55 65Critical impulse flashover, positive 100 110 140
Low-frequency test voltage, RMS to ground, kV 10 15 20Maximum RIV at 1000 kHz, µV 50 50 50
Note 1: ANSI 70 gray is standard. Brown available by requestNote 2: Available with short or long stud, sold separately
4315PX-704315X-70
4320PX-704320X-70
4327PX-704327X-70 4335X-70
4335PX-70
8.2718.21
1000
3511080
165
22100
4327PX-70 4327X-70
5 5/32”
9 11/16”
2 1/4”
3/4” - 10 UF
R 1”
R 1”
5 5/32”
9 11/16”
2 7/8”
3/4” - 10 UF
R 1”
R 1”
4320PX-70 4320X-70
5”
9”
3/4” - 10 UF
2 1/4”
R 1”
R 1”
9"
5”
2 7/8”
3/4” - 10 UF
R 1”
R 1”
4315X-70 4315PX-70
4 4/5”
7.8”
2 7/8”
3/4” - 10 UF
R 1”
R 1”
4 4/5”
7.6”
3/4” - 10 UF
2 1/4”
R 1”
R 1”
R1"
R1"
3/4 - 10 UF
11"
2 9/10"
4 5/10"
4335PX-704335X-70
11"
3/4 - 10 UF
2 2/10
5 2/10
R1"
R1"
C Neck F Neck
C Neck F Neck
C Neck F Neck C Neck F Neck
|
Distribution PostInsulators
Tie Top Line PostInsulators
57-1
CATALOG REFERENCE NUMBER
CRITICAL DISTANCES, inches
MECHANICAL VALUES, pounds
ELECTRICAL VALUES, kV
RADIO INFLUENCE VOLTAGE DATA
9325X-70
Dry arcing distance 6.5 9.5 12.2Leakage distance 14 22.5 29.5
Cantilever strength 2800 2800 2800
Typical application voltage 25 35 46Low-frequency dry flashover 90 115 135Low-frequency wet flashover 60 70 100Critical impulse flashover, positive 130 179 214
57-2
9335X-70
57-3
9345X-70
ANSI CLASS (C29.7-1996 rev. 2002)
Low-frequency test voltage, RMS to ground, kV 15 22 30Maximum RIV at 1000 kHz, µV 100 100 200
9325X-70
9335X-70 9345X-70
Note 1: ANSI 70 gray is standard, Brown abailable by request
Note 2: The insulators can be requested with M20 thread
Note 3: Available with short or long stud, sold separately
|
2 7/8"
5 7/8"
R 1"
9 3/16"
3/4"-10 UF
R 1"
6 1/8"
R 1"
12 7/16"
3/4"/10 UF
2 7/8"
R 1"
6 5/16"
2 7/8"
R 1"
15"
3/4"-10 UF
R 1"
CATALOG REFERENCE NUMBER
CRITICAL DISTANCES, inches
MECHANICAL VALUES, pounds
ELECTRICAL VALUES, kV
RADIO INFLUENCE VOLTAGE DATA
Dry arcing distance 14.5 17.25Leakage distance 40 45
Cantilever strength 2800 2800
Typical application voltage 55 66Low-frequency dry flashover 140 160Low-frequency wet flashover 110 130Critical impulse flashover, positive 230 265
57-4
8416X-70
57-5
8417X-70
ANSI CLASS (C29.7-1996 rev. 2002)
Low-frequency test voltage, RMS to ground, kV 44 44Maximum RIV at 1000 kHz, µV 200 200
Note 1: ANSI 70 gray is standard, Brown abailable by request
Note 2: The insulators can be requested with M20 thread
Note 3: Available with short or long stud, sold separately
8417X-70
7 1/2"
6"
21 1
/4"
3/4” - 10 UF
8416X-70
1 1/2"
1 1/2"
7"
6"
20
1/4
"
3/4” - 10 UF
Tie Top Line PostInsulators
Clamp Tops
CATALOG REFERENCE NUMBER
CRITICAL DISTANCES, inches
MECHANICAL VALUES, pounds
ELECTRICAL VALUES, kV
RADIO INFLUENCE VOLTAGE DATA
Dry arcing distance 5 6.5 9.5 12.25Leakage distance 10 14 22 29
Cantilever strength 2800 2800 2800 2800
Typical application voltage 20 25 35 45Low-frequency dry flashover 70 80 110 125Low-frequency wet flashover 50 60 85 100Critical impulse flashover, positive 100 130 180 210
Note 1: ANSI 70 gray is standard. Brown available by request
Low-frequency test voltage, RMS to ground, kV 15 15 22 30Maximum RIV at 1000 kHz, µV 50 100 100 200
Note 2: LN = Lock nut / LNC= Lock nut with trunnion bolt
4220 LN-704220-70
4220 LNC-704225 LN-70
4225-70
4225 LNC-704235 LN-70
4235-70
4235 LNC-704245 LN-70
4245-70
4245 LNC-70
ANSI CLASS (C29.7-1996 rev. 2002)
Tensión strength 5000 5000 5000 5000
- 57-11 57-12 57-13
Note 3: Available with short or long stud, sold separately
4220-70
5/8” - 11 NC
5 13/16” 9 5/16”
3/4” - 10 UF
4225-70
5/8” - 11 NC
3/4” - 10 UF
6 1/8”
10 43/64”
4235-70
5/8” - 11 NC
3/4” - 10 UF
6 3/8”
14 5/64”
4245-70
3/4” - 10 UF
5/8” - 11 NC
6 5/8”
16 5/8”
|
Clamp TopInsulators
Station Post
GAMMA Porcelain Station Post Insulators
Designed to meet and exceed ANSI specifications, Gamma's porcelain Station Post Insulators
conform to the most current industry standards* for the greatest degree of flexibility and
consistency. However, that's where being “Standard” ends.
GAMMA MANUFACTURES ITS OWN PRODUCTS!! Gamma does not use subcontractors to
manufacture and brand label its product. Instead we use state of the art equipment and
processes to produce high quality porcelain Station Post Insulators, consistently, every time.
In addition, Gamma has the unique ability to control nearly every step of the process. In
conjunction with its parent company, “The Corona Group** we extract, transport, and process
much of the raw material used in our insulators. We employ the engineering and technical
expertise required to support our products, and own the equipment necessary to ensure our
porcelain Station Post Insulators meets our high standards for quality and conformance.
Gamma's start to finish process ownership, state of the art manufacturing, and world class
technical capabilities produces porcelain Station Post that utilities can rely on with confidence.
There is no mystery or guesses about where your Gamma Station Post Insulators come from,
they come from GAMMA!
*Standards
Gamma Station Post Insulators conform to
ANSI (C29.1 and C29.9)
**Gamma Insulators Corporation….
is the electrical grade insulator division of THE CORONA GROUP, a 125 year old multinational
corporation with sales in excess of $1.5 billion annually. Corona's state of the art manufacturing
facilities utilize the latest manufacturing technologies, and are all certified to the most recent
ISO 9001, 14001, and OHSAS 18001 standards. We employ world class manufacturing tools and
management systems such as TPM, Lean Manufacturing, DFSS, and Six Sigma, to name a few, in
order to produce the high quality products you've come to expect from Corona Companies.
Station PostInsulators
700010000
600010000
2000
7000
1053095
550
ANSI CLASS (C29.9 - 1983) TR-202
CATALOG NUMBER
50
TR-205
8420
2000
8500
12545
110
10
8425
Leakage distance 10 1/2 15 1/2
15Voltage class 7.5
Note 1: Brown glaze or ANSI 70 gray glaze
Note 2: The insulators can be requested with M12 thread
Low frequency withstand, 10 sec. wet
Maximum RIV at 1000 kHz, µVLow frequency test voltage, RMS to ground, kV
Impulse flashover, positive
Cantilever strength, upright, pounds
Tensile strength, poundsTorsion strength, inch - poundsCompression strength, pounds
Impulse withstand
DIMENSIONS, inches
MECHANICAL VALUES
ELECTRICAL VALUES, kV
RADIO INFLUENCE VOLTAGE DATA
Cantilever strength, underhung, pounds 2000 2000
4 THREADØ ½" - 13NC
4 1/4"
3"
7"
7 1/2"
8420
4 THREADØ ½" - 13NC
4 1/4"
3"
7"
10"
8425
4 1/4"
3"
6 1/2"
4 THREADØ ½" - 13NC
14"
8428
8428
800010000
100
TR-208
2000
10000
15
24
15060
17023
2000
1000015000
2000
12000
22580
200
22100
TR-210
8430
37
34.5
2000
3"
4 1/4"
7 1/2"
4 THREADØ ½" - 13NC
18"
8430
Small Station PostInsulator
45 50 60
CATALOG NUMBER 8608 8609 8610
Note: ANSI 70 gray is standard. Brown available by request
Low-frequency withstand, 10 sec. wet
Cantilever strength, pounds
CRITICAL DISTANCES, inches
MECHANICAL VALUES
ELECTRICAL VALUES, kV
Tensile strength, poundsTorsion strenght, inch-poundsCompression strenght, pounds
Leakage distance 17 1/2 20 7/8 24 3/8
12001200
3030
86078606
5000500050003000500010000
14 1/413 9/16
1000 9005000 50005000 30005000 5000
1000500050005000
3/8-16 Thread(Galv. Steel) TYP
10"
Ø3 7/10"
1"
2 1/4"
Ø5 1/2"
8610
3/8-16 Thread(Galv. Steel) TYP
9"
Ø3 7/10"
1"
2 1/4"
Ø5 1/2"
8609
Ø3 7/10"
1"
7"8"
3/8-16 Thread(Galv. Steel) TYP
3/8-16 Thread(Galv. Steel) TYP
2 1/4"
Ø5 1/2"
Ø3 7/10"
1"
6 3/4"
3/8-16 Thread(Galv. Steel) TYP
2 1/4"
Ø5 1/2"
Ø3 7/10"
1"
2 1/4"
Ø5 1/2"
860886078606
Studs
V-010187A
3/4”2.25sq x 0.81 x 0.19
3/4”3/4”
Wood crossarm
CATALOG NUMBER
1 Med type positive lock washer
ACCESORIES
1 Square Washer 1 Standard square nut 1 Lock nut
Notes:
Dimensions in inches
Rating, kV: 35, 45, 55, 66
0.06 FLATBEARINGSURFACE
Ø1.25
SERRATEDSURFACE
R 0.06
1.02
0.81
0.62
3/4 - 10
4.00
3/4” - 10
0.05
0.17
8.75
7.560.19
0.78 (25/32”)HEX MUST PASS
Ø0.81 HOLE
SECTION A - A
Material: C-1038 steelMinimun Brinnell 143Hot dip galvanized
Line Post Long StudFittings
A
A
V-011612A
3/4”2 x 2 x 11/16 x 1/8
5/8”5/8”
Wood crossarm
CATALOG NUMBER
1 Med type positive lock washerACCESORIES
1 Square Washer 1 Regular square nut 1 Lock nut
Notes:
Dimensions in inches
Rating, kV: 15, 20, 25
3/4 - 10
1.02
0.81
5/8 - 11
4.0
8.75
0.65REF.
Material: C-1038 steelMinimun Brinnell 143Hot dip galvanized
Line Post Long StudFittings
Ø1.25
SERRATEDSURFACE
A
ASECTION A - A
V-74739
3/4”5/8”
2.25 x 2.25 x 0.69 x 0.19
5/8”
Metal crossarm
CATALOG NUMBER
1 LT type positive lock washerACCESORIES
1 LT type positive lock washer 1 Square washer 1 Regular hexagonal nut
Notes:
Dimensions in inches
Rating, kV: 15,20, 25
R 0.06
1.02
0.81
1.56
0.38
5/8” - 11
3/4” - 10
0.05
0.17
3.38
2.195/8” - 11 NUT MUSTPASS OVER HEX.
CORNERS AFTER GALV.
0.44MUST FIT
7/16 WRENCH
Material: C-1038 steelMinimun Brinnell 143Hot dip galvanized
Line Post Short StudFittings
Ø1.25
SERRATEDSURFACE
V-301613
3/4”5/8”5/8”
Metal crossarm
CATALOG NUMBER
1 Med type positive lock washerACCESORIES
1 Med type positive lock washer 1 Regular hexagonal nut
Notes:
Dimensions in inches
Rating, kV: 15, 20, 25
R 0.06
1.02
0.811.56 0.38
5/8” - 11
3/4” - 10
0.05
0.17
3.38
2.19 5/8” - 11 NUT MUSTPASS OVER HEX.
CORNERS AFTER GALV.
Material: C-1038 steelMinimun Brinnell 143Hot dip galvanized
Line Post Short StudFittings
0.06 FLATBEARINGSURFACE
Ø1.25
SERRATEDSURFACE
0.44MUST FIT
7/16 WRENCH
V-301614
3/4”3/4”
Metal crossarm
CATALOG NUMBER
2 Med type positive lock washerACCESORIES
2 Regular hexagonal nut
Notes:
Dimensions in inches
Rating, kV: 35, 45, 55, 66
Ø1.25
SERRATEDSURFACE
R 0.06
1.02
0.81
1.56
0.12
0.50
3/4” - 10 THREADBOTH ENDS0.05
0.17
3.38
2.19 3/4” - 10 NUT MUSTPASS OVER HEX.
CORNERS
0.56MUST FIT
9/16 WRENCH
0.06 FLATBEARINGSURFACE
Material: C-1038 steelMinimun Brinnell 143Hot dip galvanized
Line Post Short StudFittings
V-301616
7/8”7/8”
Metal crossarm
CATALOG NUMBER
2 Lt type positive lock washerACCESORIES
1 Regular hexagonal nut
Notes:
Dimensions in inches
Rating, kV: 88Material: C-1038 steelMinimun Brinnell 143Hot dip galvanized
R 0.06
1.19
1.06
2.81
0.25 0.38
7/8” - 9 THREAD
7/8” - 9 THREAD
0.05
0.17
4.80
3.44 7/8” - 9 NUT MUSTPASS OVER HEX.
CORNERS
0.62MUST FIT
5/8 WRENCH
Line Post Short StudFittings
Ø1.25
SERRATEDSURFACE
0.06 FLATBEARINGSURFACE
Fiberglass
Guy Strain
GS15 - SeriesFiberglass Guy Strain Insulators
GS1512-XXGS1518-XXGS1524-XXGS1530-XXGS1536-XXGS1542-XXGS1554-XXGS1560-XXGS1578-XXGS1590-XXGS1596-XX
GS15120-XXGS15144-XX
15000 (67) 12" (305)15000 (67) 18" (457)15000 (67) 24" (610)15000 (67) 30" (762)15000 (67) 36" (914)15000 (67) 42" (1067)15000 (67) 54" (1372)15000 (67) 60" (1524)15000 (67) 78" (1981)15000 (67) 90" (2286)15000 (67) 96" (2438)15000 (67) 120" (3048)15000 (67) 144" (3657)
“L”
15.8
8
“RL” STICK
GM
GM
“L” ASSEMBLY
CATALOG NUMBER LENGTH L, inches (mm)MECHANICAL STRENGTH CLASS, lbs (KN)
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
GAMMA Insulators Corpwww.gammainsulators.com
www.gamma.com.co