Mica Tape for fire-resistant cable is an insulation material made of superior phlogopite mica paper, synthetic mica paper, and calcined muscovite mica tape, impregnated with high-temperature silicon resin and reinforced with alkali-free fiberglass cloth and plastic film, which can armor the cable to resist high voltage and exceptionally high temperature.
Flame retardant mica tape is widely used in wires and cables for various applications, such as railway systems, marine cables, high-building construction, wind power plants, etc. Mica tape with PSA is also available, mainly for EV flash hiders.
Select the mica tape with the appropriate width according to the wire diameter, the tension of the wrapping, the angle, and the wrapping speed. The breaking phenomenon should not occur, and the surface of the insulated core after wrapping shall be smooth and flat without mica falling off.
Types of mica tape
Fire-resistant mica tape mainly includes phlogopite mica tape, synthetic mica tape, and calcined muscovite mica tape, which are usually produced according to different temperatures and test standards.
Phlogopite mica tape usually used as insulation material at flame temperatures of 750 ℃ to 830 ℃.
Synthetic mica tape usually used as insulation material at flame temperatures of 950 ℃ to 1000 ℃.
Calcined mica tape usually used as insulation material at flame temperatures of 900 ℃ to 950 ℃.
Mica tape properties
- Excellent insulating property.
- High temperature resistant.
- Flexible, high-tensile suit for high-speed cable manufacturing.
- Eco-friendly, Free of toxic gases in a fire.
- Pass IEC60331 & BS6387 fire-resistant standard test for high-quality cable.
It has at least 3 hours of excellent electrical insulation at a Temperature of more than 850℃ and a Voltage of more than 1.0KV, with no breakdown.
Mica tape structure
High-quality mica paper is bonded to an electrical-grade glass fiber cloth (G type) or PE film as the reinforcing material, impregnated with a specially selected high-temperature-resistant silicone resin. Mica tapes include double-sided glass mica tape, single-sided glass mica tape, PGF mica tape, double-film, and single-film.
Applications
Transformer & Motor Coil Insulation: Primary groundwall and interlayer insulation for windings in transformers, generators, and large motors (often referred to as transformer insulation tape).
Fire-Resistant Cable Wraps: Critical insulation in fire-alarm, elevator, marine, and industrial cables to maintain circuit integrity during fires.
High-Temperature Equipment: Insulation for furnace, boiler, and oven wiring, as well as heating element assemblies.
Power Electronics & Switchgear: Used on bus bars, chokes, capacitors, and switchgear components in power generation and distribution systems.
Safety-Critical Systems: Ideal for aerospace, automotive (EV battery packs), and other applications requiring flame-retardant, high-voltage insulation.
Specifications of mica tape
| Products | Type | Normal Thickness (MM) | Total Substance | Refractory standard |
|---|---|---|---|---|
| CMG Calcined Muscovite mica tape with single side Glass fabric | CM80G32 | 0.100±0.015 | 135±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| CMG Calcined Muscovite mica tape with single side Glass fabric | CM100G32 | 0.120±0.015 | 158±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| CMG Calcined Muscovite mica tape with single side Glass fabric | CM120G32 | 0.140±0.015 | 180±14 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| CMG Calcined Muscovite mica tape with single side Glass fabric | CM160G32 | 0.160±0.015 | 135±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PG Phlogopite mica tape with single side Glass fabric | P80G32 | 0.100±0.015 | 127±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PG Phlogopite mica tape with single side Glass fabric | P100G32 | 0.110±0.015 | 148±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PG Phlogopite mica tape with single side Glass fabric | P120G32 | 0.125±0.015 | 172±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PG Phlogopite mica tape with single side Glass fabric | P160G32 | 0.140±0.015 | 216±14 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PGD Phlogopite mica tape with Double sides Glass fabric | P140GD42 | 0.145±0.02 | 202±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PGD Phlogopite mica tape with Double sides Glass fabric | P160GD42 | 0.160±0.02 | 225±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PGF Phlogopite mica tape with Glass fabric and Film backed | P140GF46 | 0.145±0.02 | 203±12 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| PGF Phlogopite mica tape with Glass fabric and Film backed | P160GF46 | 0.160±0.02 | 226±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SG Synthetic mica tape with single side Glass fabric | S80G32 | 0.100±0.015 | 125±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SG Synthetic mica tape with single side Glass fabric | S100G32 | 0.110±0.015 | 148±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SG Synthetic mica tape with single side Glass fabric | S120G32 | 0.125±0.015 | 173±11 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SGD Synthetic mica tape with Double sides Glass fabric | S140GD42 | 0.150±0.02 | 202±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SGD Synthetic mica tape with Double sides Glass fabric | S160GD42 | 0.170±0.02 | 225±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SGF Synthetic mica tape with Glass fabric and Film backed | S120GF46 | 0.130±0.02 | 181±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SGF Synthetic mica tape with Glass fabric and Film backed | S140GF46 | 0.145±0.02 | 203±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
| SGF Synthetic mica tape with Glass fabric and Film backed | S160GF46 | 0.160±0.02 | 226±13 | BS6387-2013 GB/T19216.31-2008 IEC60331 |
The physical variables in this form are for informational purposes only and do not constitute contractual commitments under any circumstances. If you require any additional information, please get in touch with our Technical Services.
HighMica's mica tape delivery form
| Type | Thickness (mm) | Width (mm) | Length (m) | ID (mm) | OD (mm) |
|---|---|---|---|---|---|
| Pad | 0.08~0.14 | 5~60 | 500~2000 | 52, 76 | 250~560 |
| Jumbo | 0.08~0.14 | 335, 505, 1010 | 500~2000 | 52, 76 | 250~560 |
| Spool | 0.08~0.14 | 5~20 | 3000~30000 | 76, 77 | 280~300 |
