Specifications: IEC60893-3-5-2009, UPGM203
Dimensions: 1000mm2000mm/1250mm2000mm/1250mm*2500mm
Standard Thickness: 1-40mm
Color: White/Red
With our CNC center we can machine according to customer drawings and punch using presses and dies; we offer cut-to-length services and direct sales of plates, bars and profiles.
If you are attractive to our products, please send us a message and we will contact you as soon as we receive it.
GPO-3 sheet is also called UPGM203 plate (Unsatured Polyester Glass Mat Plate). UPGM203 is IEC standard and GPO-3 is NEMA grade. It is kind of rigid plate insulating material, made of alkali-free fiberglass mat impregnated with unsaturated polyester resin, adding relevant chemical agents in heating and pressing to cure into rigid plate.
Standard Color: Red Color, White color
Raw Material: Glass Mat + Unsaturated Polyester Resin
Strong and stiff
Good flame and smoke characteristics
Impact resistant and Dimensional stability
Excellent electrical properties( under high humidity)
Good arc resistance and tracking resistance
GPO-3 glass reinforced thermoset polyester sheets, also known as “Red Barrier Board” in construction applications.
GPO-3 laminate performs well in electrical applications that require high arc and carbon track resistance as well as flame resistance, physical strength, and moderate heat resistance.
GPO-3 laminate is used extensively in the making of phase and end barriers, insulating supports, bus bar supports and mounting panels in switchgear and other types of electrical apparatus.
GPO-3 is a UL recognized product with a temperature index of 120 degrees celsius electrical and 140 degrees celsius mechanical, and is molded in thicknesses of 1/32″ (.031″) to 2.00″ thick.
| No. | Test Items | Unit | Standard Value |
| 1 | Compressive Test | MPa | ≥220 |
| 2 | Deflection Temperature Under Load | ℃ | ≥240 |
| 3 | Density | G/Cm3 | 1.75~1.95 |
| 4 | Flexural Modulus | MPa | ≥10000 |
| 5 | Shear Strength | MPa | ≥100 |
| 6 | Surface Resistance | Ω | ≥ 1.0×10¹² |
| 7 | Tensile Modulus | GPa | ≥11 |
| 8 | Tensile Strength | MPa | ≥95 |
| 9 | Vertical Burning | / | V0 |
| 10 | Water Absorption | / | ≤ 0.5% |
| 11 | Relative Permittivity & Dissipation Factor | Dissipation Factor | ≤0.015 |
| Dissipation Factor | ≤ 4.5 | ||
| 12 | Charpy Notched Impact Strength | KJ/M2 | >41 |
| 13 |
Dielectric Breakdown Voltage & Dielectric
Strength
|
KV/Mm(Vertical Direction) | ≥12 |
|
KV(Parallel Layer Direction)
|
>50 | ||
| 14 | Flexural Strength | MPa(23℃) | ≥130 |
| MPa(130℃) | ≥90 | ||
| 15 | Glowing-Wire Test(GWEPT) | ℃ | GWEPT≥960 |
| 16 | Poisson’s Ratio(Μb) | / | 0.29-0.39 |
| 17 |
Comparative Tracking Index(CTI)
|
/ | CTI≥600V |
| 18 | Arc Resistances | S | ≥180s |
GPO3 machined parts can be customized according to customer provided drawings
The GPO-3 board is widely used for electrical insulating applications. GPO-3 is also used for mechanical applications where strength, stiffness, dimensional stability, and relatively low cost are required.
Application area: circuit breaker, motors and so on.
The application of circuit breaker: frame circuit breaker: safety baffle, safety cover, spacer gasket, interphase partition, etc.
The application of molded case circuit breaker: interphase partition, arc extinguishing chamber spacer plate, etc.
The application of motors: Motor armature parts, movable cover plate, slot wedge stator, fixed gasket, thin gasket, carbon brush seat, etc.
If you are interested in our products,, please send us a message and we will contact you as soon as we receive it. Email: info@ztelecgroup.com whatsApp: +8616650273778
Time:03-21 2025
Time:03-18 2025
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