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Ruby Mica® Glass Mica Tape is a lamination of uncalcined muscovite / phlogopite mica paper with glass cloth. High thermal-grade silicone resin is used as a bonding agent making it a Class H insulation product.
Highly-porous mica paper is selected which has excellent resin absorbing properties. The GM Tape’s good flexibility with minimal thickness contributes to the ease in conductor taping.
An additional layer of glass cloth may also be laminated on top of mica paper. This GMG Tape has an increased thermal conductivity for better coil-heat dissipation and nearly doubles the tensile-strength of GM tape.
APPLICATIONInter-turn conductor insulation suitable for resin-poor VPI insulation system of HT motors and generators, Class H insulation in transformers, induction furnace coil insulation etc.
AVAILABILITYTape roll / Folium / Wrapper :
Length : 25 – 500 m
VVidth : 6 – 1000 mm
6 months at ≤ 20°C • 12 months at ≤ 5°C
| Properties | Test Method | Unit | Value | Value | Value | Value | Value |
|---|---|---|---|---|---|---|---|
| Nominal Thickness | IEC 60371 – 2 | mm | 0.1 ± 0.01 | 0.13 ± 0.01 | 0.15 ± 0.01 | 0.18 ± 0.02 | 0.2 ± 0.02 |
| Total Substance | IEC 60371 – 2 | g/m² | 130 ± 10 | 165 ± 15 | 195 ± 15 | 235 ± 20 | 260 ± 20 |
| Mica Paper | IEC 60371 – 2 | g/m² | 80 ± 5 | 120 ± 9 | 150 ± 10 | 180 ± 12 | 200 ± 15 |
| Glass Content | IEC 60371 – 2 | g/m² | 23 ± 3 | 32 ± 3 | 32 ± 3 | 32 ± 3 | 32 ± 3 |
| Resin Content | IEC 60371 – 2 | g/m² % | 15 ± 3 12 – 15 | 20 ± 3 12 – 15 | 25 ± 3 12 – 15 | 30 ± 3 12 – 15 | 35 ± 3 12 – 15 |
| Tensile Strength | IEC 60371 – 2 | N/cm | ≥ 75 | ≥ 120 | ≥ 120 | ≥ 120 | ≥ 120 |
| Volatile Contents | IEC 60371 – 2 | % | ≤ 0.5 | ≤ 0.5 | ≤ 0.5 | ≤ 0.5 | ≤ 0.5 |
| Break Down Voltage | IEC 60243 – 1 | kV/mm | ≥ 15 | ≥ 15 | ≥ 15 | ≥ 15 | ≥ 15 |
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