EN 
KR 
ES 
AR 
Standard: IEC 60893-3-6:2003 , SI GC 202,NEMA G-7
Regular Size: 1020*2020/1020*1220/1220*2440mm(support customize)
Standard Thickness: 0.5-40mm
Thermal rating: Class H(180℃)
Flame resistance:UL94-V0
Color: white
Application:Motors,Generators,Transformers,Switchgear,Circuit Breakers
G7 Silicone fibergalss sheet is a laminate sheet made from high-performance silicone resin and a woven fiberglass substrate. It is a flame-resistant material featuring a low dissipation factor with high heat and superior arc resistance. G7 works well in wet or dry conditions and are ideal for applications requiring solid mechanical and electrical properties.
High Temperature Resistance: It offers exceptional thermal stability with a continuous operating temperature typically ranging from 200°C to 220°C (Class H insulation).
Excellent Dielectric Properties: Maintains low dielectric loss and high insulation resistance even under high humidity or varying temperature conditions.
Superior Arc Resistance: Highly effective at preventing the formation of conductive paths under high-voltage stress.
Flame Retardancy & Low Water Absorption: It is self-extinguishing and has minimal water uptake, ensuring excellent dimensional stability in damp environments.
Machinability: While it has good mechanical strength, the silicone bond is relatively lower than epoxies, requiring care during precision machining to prevent delamination.
Electrical Equipment: Insulating barriers for high-voltage switchgear, transformer winding supports;
New Energy Vehicles: Insulating brackets for battery packs, motor slot wedges, and arc-resistant components;
Electronic Packaging: Potting substrates for high-power modules, heat dissipation substrates for LEDs;
Aerospace: Thermal insulation layers for airborne equipment, radiation-resistant structural components.
1.Factory: We operate a professional electrical insulation materials manufacturing facility and are ISO-certified.
2.Fully Automated Production: Our advanced automated workshop is supported by a strict and comprehensive quality management system.
3.Quality Inspection: Equipped with four major laboratories and five core product performance testing capabilities.
4.Processing Services: We provide customized processing solutions based on your requirements, ensuring high quality and on-time delivery.
5.Product Certification: Our products comply with UL, SGS, RoHS, and REACH standards. Sample testing is available upon request.
6.Ready Stock Supply: Standard products can be delivered within 7–15 days.
Our company is certified to ISO 9001, ISO 14001, and ISO 45001 management systems. Our products also comply with international certifications and reports including UL, RoHS, REACH, MSDS, CEMT, as well as factory inspection and test reports provided before shipment.
Wrapped with packaging film and packed in pallet; horizontally placed in dry and clean room at room temperature; keep it away from moisture and fire. The storage period is 12 months.
| Basic Information | Chinese name | 3250 | |
| IEC | SIGC202 | ||
| NEMA | G7 | ||
| Substrate | |||
| Resin | Silicone | ||
| Color | White/light green | ||
| Serial number | Detection item | Unit | |
| 1 | density | g/m³ | |
| 2 | Vertical layer bending strength (normal) | MPa | ≥320 |
| 3 | Parallel layer impact strength (simple beam method) | KJ/m2 | ≥45 |
| 4 | Vertical layer electrical strength (90 ° C transformer oil) (1 mm thick) | Kv/mm | ≥8.0 |
| 5 | Parallel layer breakdown voltage (90 ° C transformer oil) | kv | ≥35 |
| 6 | Dielectric constant (50Hz) | – | ≤4.5 |
| 7 | Dielectric loss factor (50Hz) | – | ≤0.02 |
| 8 | Insulation resistance after immersion | Ω | ≥1.0*1010 |
| 9 | Resistance to Trace Index (PTI) | – | – |
| 10 | Flammability | – | V-0 |
| 11 | Temperature index | – | 180 |
| 12 | Water absorption 1 (1-20mm thick) | mg | 32～125 |
