Product Description
What is GPO-3 material?
GPO3 polyester glass laminate is a glass fiber reinforced thermosetting polyester electrical grade sheet. This composite has application temperatures up to 155°C and offers an excellent combination of high strength and low smoke generation. The material meets the specification requirements of Nema GPO3 and is flame retardant. Due to its extreme strength, dimensional stability and rigidity, GPO3 is easy to process, making it suitable for many applications in the mechanical and electromechanical industries.
Fabrication
JY offers custom glass polyester (GPO) laminate design, machining, and fabricating for industrial applications. With over 30 years of experience, We have several in-house CNC facilities that allows us to convert this material, including milling, turning, sawing and drilling equipment.Call today to talk with one of our GPO manufacturing experts.
Applications
GPO laminate design parts
Control panel components
Circuit board components
Power generation, transformer, and motor components
Electrical insulating and bus bar supports
Electrical phase and end barriers
Electrical insulation
Switch gears
Angles and channels
The properties of NEMA GPO-3
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Grade |
JY-GPO3 |
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ANSI (NEMA) Grade NEMA LI-1 |
GPO-3 |
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Items |
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Test Method |
Unit |
Typical Values |
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Physical Properties |
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--- |
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Specific Gravity |
IEC 60893-2:2003 |
g/cm3 |
1.95-2.05 |
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Water absorption |
ISO62:2008 |
% |
≤0.5 |
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Mechanical properties |
Tensile Strength |
ASTM D-638 |
psi x 106 |
1.7 |
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Compressive strength |
ASTM D-229 |
ksi |
33.0 |
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Flexural Strength |
ASTM D-229 |
ksi (MPa) |
23 |
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Shear Strength |
ASTM D-732 |
ksi (MPa) |
13.0 (90) |
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Impact strength |
ASTM D-229 |
ft-lb/in |
9.3 |
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Volume Resistivity |
ASTM D-257 |
Ω-cm |
1013 - 1014 |
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Surface Resistivity |
IEC 60093：1980 |
Ω |
≥ 1.0 x 1012 |
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Electric Strength |
ASTM D-229 |
V/mil |
550 |
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Breakdown Voltage-Condition A |
ASTM D-229 |
kV |
45 |
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Arc Resistance |
ASTM D-229 |
sec |
192 |
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PTI Proof Tracking Index PTI |
IEC 60893-2:2003 |
--- |
≥600 |
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Dielectric Constant |
IEC 60893-2:2003 |
--- |
4.0-5.0 |
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Dissipation Factor |
IEC 60893-2:2003 |
--- |
≤0.03 |
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Thermal properties |
Coefficient of Thermal Expansion |
ASTME 228-11 |
1/K |
≤2x10-5 |
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Temperature Index |
UL 746-B |
℃ |
130 |
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Flame Resistance performance |
Oxygen Index |
ISO 4589-2:1996 |
%O2 |
≥ 30 |
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Flame Resistance |
UL 94 |
Class |
V-0 |
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Toxicant(Emission halogen etc.) |
E662 |
--- |
Low |
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Other properties |
The anti microbial properties of bacteria |
G21-G22 |
--- |
good |
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NOTE：THE ABOVE VALUES ARE GIVEN AS REFERENCE ONLY TAKEN FROM AVERAGE TEST RESULTS，AND DO NOT REPRESENT A GUARANTEE ON THE ACTUAL PERFORMANCE OF THE MATERIAL. |
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