NEMA G3
Product Definition:
NEMA Grade G-3 is a type of industrial laminate material used for electrical insulation. It is made up of layers of woven glass fabric that are impregnated with an epoxy resin binder. The term "NEMA" stands for National Electrical Manufacturers Association, which is a standards organization that establishes guidelines and standards for the electrical industry in the United States.
The NEMA Grade G-3 laminate material is known for its high mechanical strength, low moisture absorption, and excellent electrical insulating properties. It is typically used in applications where high mechanical strength and electrical insulation are required, such as in transformers, motors, and generators.
The NEMA Grade G-3 laminate material is available in various thicknesses and sizes to accommodate a wide range of applications. It can be machined, drilled, and formed to create complex shapes and structures. The material is also resistant to a wide range of chemicals and has excellent dimensional stability, making it ideal for use in harsh environments.
Overall, NEMA Grade G-3 is a durable and reliable material that is well-suited for use in a variety of electrical applications. Its high strength and excellent insulating properties make it an ideal choice for applications where safety and reliability are critical.
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 G-3 is commonly used in a variety of electrical applications where high mechanical strength and excellent electrical insulation properties are required. Here are some of the most common applications:
- Transformers
- Motors and generators
- Circuit breakers
- Switches and relays
- Control panels
Overall, NEMA Grade G-3 is a versatile material that is well-suited for a wide range of electrical applications where high strength, insulation, and durability are critical.
Material Details
| Item | NEMA Grade G-3 | |||
|---|---|---|---|---|
| Description | NEMA Grade G-3 material is a woven glass fabric laminate with a high temperature phenolic resin. Glass phenolic insulating materials o er good exural, compressive, and impact strength at elevated temperatures as well as good moisture resistance. | |||
| Standards | NEMA LI-1: Grade G-3 | IEC 60893: PF GC 201 | MIL-I-23768/18 | |
| Availability: | ||||
| Sheet Size | 1220 x 1220 | 1220 x 2440 | ||
| Fabricated Parts: | NEMA G-3 convolute tubes are available from The SAM Group in nearly any custom size of inside and outside diameter, per customer requirements | |||
| Convolute Tubing: | The SAM Group custom fabricates insulation materials to the exact speci cations and drawings of our customers | |||
Typical Applications
- Track Resistance
- Terminal Boards and Tag Strips
- Precision Machined Parts
- Pipeline Insulation
- Mechanical Applications
- Insulating Handles
- Insulating Bushes Spacers Sleeves
- High Voltage Insulation
- Electromagnetic Coil Insulation
- Coil Formers
- Busbar Supports
Engineering Properties
| Key Characteristics | Units | Values |
|---|---|---|
| Tensile Strength | Psi | 23000 |
| Modulous of elasticity (in Tension) | Psi | 200000 |
| Modulous of elasticity (in flexure) | Psi | 150000 |
| compressive strength | psi | 50000 |
| Rockwell Hardness | M Scale | M-100 |
| Electric Strength | kV | -- |
| Dielectric strength perpendicular | V/mil | |
| short time test | 1/8 in | 600 |
| Step by step test | 1/8 in. | 450 |
| Breakdown Voltage | NA | |
| Izod Impact Strength | ft-lb/in | 6.5 |
| Bonding Strength | lb | 850 |
| Permittivity | at 1 MHz | -- |
| Dissipaton factor | at 1 MHz | -- |
| Comparative Tracking index | pt. electrodes | 190 |
| Specific Gravity | G/C^3 | 1.7 |
| Specific Volume | kV/mm | 16.8 |
| Thermal Expansion | cm/cm. C | 1.8 |
| Thermal conductivity | Cal.cm/s.cm2. C | 7 |
| Specific Heat | cal/g.C | 0.35 |
| Temperature Index | C | 170 |
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