TUFR FIRE RESISTANT
Stripwound Insulation with TUFR
TuFR™ is IPT's fire resistant mineral insulation paper for UL Class 200°C (N). Based on the successfull composition of the TUFQUIN it demonstrates the same mechanical and dielectrical performance such as the high mechanical strength of organic fibres with the excellent thermal and dielectric characteristics of mineral papers. Due to the high tensile strength of TuFR™ this material is often used for interlayer insulation in transformers.
Key Features
- UL System Recognition per UL 1446 ad IEC 61857 for Class 200(N)
- V0 for thickness >= 2,5mils (0,06mm)
- High resin absorption
- High thermal conductivity
- Cost Effective
Technical Data
| Nominal Thickness | [mils] | 2 | 3 | 5 | 7 | 10 |
| Nominal Thickness | [mm] | 0,05 | 0,08 | 0,13 | 0,18 | 0,25 |
| Basis Weight | [g/m2] | 57 | 100 | 146 | 217 | 320 |
| Dielectric Strength | [kV] | 0,4 | 0,6 | 0,7 | 1,0 | 1,5 |
| Tensil Strength MD | [kN/M] | 2,3 | 4 | 4,9 | 9,1 | 9,6 |
| Tensil Strength CD | [kN/m] | 0,7 | 1,4 | 2,3 | 3,9 | 4,9 |
| Elongation MD | [%] | 15 | 22 | 18 | 21 | 22 |
| Elongation CD | [%] | 11 | 11 | 11 | 18 | 20 |
| Elmendorf Tear Strength MD | [g] | 48 | 70 | 228 | 420 | 560 |
| Elmendorf Tear Strength CD | [g] | 120 | 180 | 480 | 656 | 2016 |
| Moisture Content | [%] | 1 | 1 | 1 | 1 | 1 |
Major Applications
- Layer insulation for resin-encapsulated coils
- Wire-wrap for dry-type and liquid-immersed units
Technical Documents
- 3M TDS TuFR Family [29 KB]
- 3M TDS TuFR ROHS compliance 2010-08-07 [78 KB]
- 3M TDS TuFR UL94 V0 rating [31 KB]
- 3M TDS TuFR UL Yellow Card [17 KB]
- 3M TDS TuFR 2mil to 10mil [22 KB]
- 3M TDS TuFR 2mil [34 KB]
- 3M TDS TuFR 3mil [35 KB]
- 3M TDS TuFR 5mil [35 KB]
- 3M TDS TuFR7mil [35 KB]
- 3M TDS TuFR 10mil [35 KB]
- 3M TDS TuFR 14mil [35 KB]