RUBY MICA CO. LTD.
Glass Mica Tape

Glass Mica Tape

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Glass or Mica Tape

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.

Application

Inter-turn conductor insulation suitable for resin-poorVPI insulation system of HT motors and generators, Class H insulation in transformers, induction furnace coil insulation etc.

Availability

  • Tape roll / Folium /Wrapper
  • Length : 25 - 500 m
  • Width : 6 - 1000 mm

Packing

Tapes are packed in airtight robust boxes protecting them from dirt, dust and moisture. The packaging also ensures safe transit and storage.

Storage

6 months at 20°C - 12 months at ≤ 5°C

Product Data

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 Strength

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