Melamine and silicone fibreglasses are composite materials, derived from glass, which are Made using resin melamine or silicone and fiberglass fabric.
These types of vitronite are laminates made by means of a thermal process under pressure and stand out as good thermal and electrical insulators, suitable for use as an insulating part in the grooves of high-temperature motors, anti-arcing devices for switches and similar applications.
Both are self-extinguishing, mechanically inferior to epoxy glass, but have high resistance to creeping currents (tracking) and electric arc. This means that they tolerate the sparks that are released when a switch turns on or off the power well.
For this reason we recommend application as disconnectors for low and medium voltage.
| 2070 × 1070 | |
G5 melamine vetronites
Melamine vitronite, or melovit, is a stratified laminate of glass fiber fabric, impregnated with melamine resin. These layers of impregnated fabric are heat pressed to make the sheets.
This material is technically called G5 and stands out for its high flame resistance, in fact it is classified as self-extinguishing UL94 V0, as well as excellent resistance to arcing and electrical traces. The latter is the path that traces the free current flow through the material in the event of high voltages or partial discharges.
G7 silicone vetronites
Silicone vetronites, or silirite, is a stratified laminate of glass fiber fabric, impregnated with silicone resin by means of a thermal and pressure process.
This material is technically called G7 and stands out for being suitable for applications with high thermal stresses (180 °C).
Like melamine vetronite, the silicone one is self-extinguishing UL94 V0 and has excellent resistance to creeping currents.
Due to the peculiarities reported above, the application of silicone vetronite, but also melamine glass, is recommended as disconnectors for low and medium voltage.
LMV
Glass fabric and melamine resin
| Standard | NEMA LI – 1 | G5 |
| CEI 15/10 | MV | |
| CEI EN 60893 | MF GC 201 | |
| DIN 7735 | Hgw 2272 | |
| Thermal class B (130°C) self-extinguishing | ||
LG7
Glass fabric and silicone resin
| Standard | NEMA LI – 1 | G7 |
| CEI 15/10 | SV | |
| CEI EN 60893 | SI GC 202 | |
| DIN 7735 | Hgw 2572 | |
| Thermal class H (180°C) self-extinguishing | ||
Shearing
Among the available processes, the customer can also choose blanking.
This involves the plastic deformation of composite and layered materials, cutting the material without removing any part.
The pressure between the die and the punch allows you to precisely obtain flat sections, with geometric shapes of different complexity.
Our technicians work using cutting molds with extreme precision and provide the best result.