Properties
- Wound Insulation Tubes made of multi-layer composite for applications in electric motors of temperature class F
- Inner diameter from 2.00 mm to 200.00 mm with any wall thickness
- Robust composite made from DuPont™ Mylar® and Nomex®
- Suitable for insulation in temperature class F applications with continuous temperatures up to 155 °C.
- Base material UL
Technical data
Outer laminate: DuPont™ Mylar® A polyester film
| Electrical properties | |||
| Properties of the film | Typical value | Test condition | Test method |
| Dielectric strength [V] | 6400 | 25 ºC, 50 Hz and 50 mm electrode gap | ASTM D 149-64 |
| Film thickness [mm] | 0,0254 | 25 ºC, 7500 V , 150 ºC 5000 V | – |
| Surface resistance [W /Quadrat] | 1016 | 25 ºC, 30 % relative humidity | ASTM D 257-78 |
| Physical properties | |||
| Properties of the film | Typical value | Test condition | Test method |
| Tear strength running direction (LR) [Mpa] | 200 | 25 ºC | ASTM D 882-80 |
| Elongation at break (LR) [%] | 130 | 25 ºC | ASTM D 882-80 |
| Tension for 5% elongation (LR) [Mpa] | 105 | 25 ºC | ASTM D 882-80 |
| Moisture absorption | less than 8% | immersed for 24 h at 25 ºC | ASTM D 570-63 |
| Thermal properties | |||
| Properties of the film | Typical value | Test method | |
| Melting point | 253-255°C | ASTM D 3148-82 | |
Inner laminate: DuPont ™ Nomex® 410
| Electrical properties | |||||
| Properties of the film | 50 µm 1mil | 75 µm 2 mil | 125 µm 3mil | Test method | |
| Dielectric strength (AC steep rise) | [V/mil] | 430 | 550 | 680 | ASTM D149* |
| Dielectric constant at 60Hz | 1,6 | 1,6 | 2,4 | ASTM D3426 | |
*Complies with IEC 243-1, 9.1 with the exception of the electrode gap of 50 mm.
| Physical properties | ||||
| Properties of the film | 50 µm | 75 µm | 125 µm | Test method |
| Weight [g/m2] | 41 | 63 | 116 | ASTM D646 |
| Density [g/cm3] | 0,72 | 0,08 | 0,13 | |
| Mechanical properties | |||||
| Properties of the film | 50 µm | 75 µm | 125 µm | Test method | |
| Tear resistance | |||||
| In running direction Transverse to running direction |
[N/cm] | 39 | 65 | 137 | ASTM D828 |
| 18 | 32 | 66 | |||
| Tear elongation | |||||
| In running direction Transverse to running direction |
[%] | 9 | 11 | 15 | ASTM D828 |
| 6 | 8 | 12 | |||
| Tear resistance (Elmendorf) | |||||
| In running direction Transverse to running direction |
[N) | 0,8 | 1,2 | 3,4 | TAPP1-414 |
| 1,6 | 2,3 | 5,2 | |||
| Tear resistance | |||||
| In running direction Transverse to running direction |
[N) | 11 | 16 | 33 | TAPP1-414 |
| 6 | 8 | 17 | |||
| Shrinkage at 300 ºC | |||||
| In running direction Transverse to running direction |
[%] | 2,2 | 1,1 | 0,9 | ASTM D1004 |
| 0,1 | 0 | 0 | |||
Impact of moisture on the properties of DuPont™ Nomex® 410
| Electrical properties | ||||
| Moisture content | oven dry | 50 % | 96 % | |
| DuPont™ Nomex® 410 – 0.25 mm | ||||
| Dielectric strength [kV/mm] (AC steep rise) [V/mil] |
33.5 850 |
32.1 815 |
30.7 780 |
ASTM D149 |
| Dielectric constant | ||||
| at 60 Hz | 2,5 | 2,7 | 3,2 | ASTM D150 |
| at 1 KHz | 2,3 | 2,6 | 3,1 | |
| Loss factor | ||||
| at 60 Hz | 6 x10-3 | 6 x10-3 | 11×10-3 | ASTM D257 |
| at 1 KHz | 13×10-3 | 14×10-3 | 25×10-3 | |
| Contact resistance [W/cm] | 6 x 1016 | 2 x 1016 | 2 x 1014 | |
| Physical properties | |||||
| DuPont™ Nomex® 410 – 0.08 mm | |||||
| Moisture content | oven dry | 50 % | 65 % | 95 % | |
| Expansion | |||||
| In running direction Transverse to running direction |
[%] | 0 | 0,4 | 0,6 | 0,9 |
| 0 | 0,5 | 0,8 | 1,6 | ||
| Moisture absorption [%] | 0 | 2,9 | 4,9 | 7,7 | |
Item number:
Example: IRNNM0100/005/0500
IRNNM = master number
0100 = 1.00 mm diameter
005 = 0.05 mm wall thickness
0500 = 500 mm length
