NEMA GPO3
Product Definition:
NEMA Grade GPO-3 is a thermoset fiberglass reinforced polyester material that is widely used in electrical and mechanical applications. The acronym "NEMA" stands for National Electrical Manufacturers Association, which sets standards for electrical equipment and materials in the United States.
GPO-3 has excellent electrical insulation properties and is resistant to moisture, heat, and chemicals. It is commonly used for electrical insulation in switchgear, transformers, and bus bar supports. It is also used as a structural material in electrical enclosures, power distribution systems, and other applications that require high strength and durability.
The material is available in sheet, rod, and tube form and can be machined, drilled, and fabricated to meet specific application requirements. It is typically colored in a bright red or white shade for easy identification and is known for its high mechanical strength, flame resistance, and low smoke generation.
Overall, NEMA Grade GPO-3 is a versatile material with a wide range of applications in the electrical and mechanical industries.
Advantages and applications
- Excellent Voltage Resistance (electric strength ≥≥16KV/mm)
- Excellent Water Resistance (Water absorption ≤≤ 0.2%)
- Excellent Heat Resistance (Heat resistance above 155 °C) Excellent Heat Resistance (Class F)
- Excellent thermal impact resistance (-273°C to +155°C) Excellent thermal impact resistance (Temp.Index: -273°C to +155°C)
- Excellent mechanical process-ability & high degree of automation processing
- Excellent chemical resistance & radiation resistance
- RoHS, Reach certified products
Applications
NEMA Grade GPO-3 is a popular material in the electrical and mechanical industries due to its excellent electrical insulation and mechanical properties. It is commonly used in the following applications:
- Electrical insulation
- Structural components
- Automotive parts
- Aerospace components
- Railway components
Overall, NEMA Grade GPO-3 is a versatile material with a wide range of applications in the electrical and mechanical industries. Its high strength, electrical insulation properties, and resistance to heat and chemicals make it a popular choice for a variety of applications.
GPO-3 Engineering Properties
| Key Characteristics | Test Method | Units | Values |
|---|---|---|---|
| Matrix | Polyester | ||
| Reinforcement | Glass Matt | ||
| Specifications |
UPGM203 / 205 MIL-I-24768/6 |
||
| Sizes (in mm) | mm | 1220 x 1020 | |
| Color | Red, White | ||
| Specific Gravity | ASTM D792 | g/cc | 1.8 -/+ 0.1 |
| Tensile Strength | Lw - ASTM D638 | psi | 40500 |
| Cw - ASTM D638 | psi | 35000 | |
| Compressive Strength | ASTM D695 | psi | 45500 |
| Flexural Strength | LW - ASTM D790 | psi | 49800 |
| Shear Strength | ASTM D732 | psi | 11000 |
| Izod Impact Strength | ASTM D256 | ft-lb/in | 8.5 |
| Bonding Strength | ASTM D229 | lb | 850 |
| Rockwell Hardness | ASTM D785 | M Scale | 100 |
| Arc Resistance | ASTM D495 | Sec | 190 |
| Dielectric Strength | ASTM D149 | VPM | 450 |
| Breakdown Voltage | ASTM D149 | kV | 45 |
| Comparative Trackin | ASTM D419 | >600 | |
| Water Absorption | ASTM D570 | % | 0.25 |
| Relative Temp. | UL-7468 | c | 155 |
| Flame Resistance | UL94 | V-0 | |
| Thermal Class | NEMA | F |
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