Silicon Laminates G7
Insulac G-7 materials are glass based laminates with a silicone resin binder. Glass silicone insulating materials offer excellent thermal resistance (up to 250°C) and arc resistance. These grades find application as electric furnace insulation, circuit breaker parts, switchboard panels, and arc barriers and also available in tubing. In fabrication, care must be taken due to the low internal bond strengths inherent in silicone resins.
Insulac It exhibits excellent electrical properties, excellent heat resistance, outstanding arc resistance, and Selfextinguishing properties. The main applications are Class H Transformers, Arc Plates, Terminal Boards, Microwave radar insulation, Spacers, wedges and all H class applications
Grade: NEMA Ll-1 Grade G7 I IEC 60893 SI GC 202 / Hgw 2572
Standard Colour : White
Specific Density : 1.80 - 2.00 Gm/cm3
| Key Characteristics | Units | Typical Values |
|---|---|---|
| Rockwell Hardness (.062") | M Scale | 110 |
| Moisture Absorption (.062") | % | 0.19 |
| Tensile Strength (.125)CW | psi (MPa) | 40,000 (275) |
| Flexural Strength (.25") | ||
| CW - | psi (MPa) | 15,000 (103) |
| CW - | 18,000 (124) | |
| IZOD Impact Strength (.062)CW | ||
| CW - | ft.-ibs./in. | 8.5 |
| LW - | 17.0 | |
| Arc Resistance (.125) | Second | 200 |
| Compressive Strenght, Flatwise | psi(Mpa) | 45,000 (310) |
| Flammability Rating | Class | V-0 |
| Breakdown Voltage (.062) | ||
| (Both Parallel Step Method) | kV | 55 |
| Dielectri Strength (.500) | V/mil. | 350 |
| Permittivity (.062") | - | 4.34 |
| Dissipation Factor (.062") | - | 0.0017 |