SynTherm® – Insulating Materials SynTherm® DMD
SynTherm® DMD is a flexible 3-ply insulating material made of polyester film covered with a layer of impregnated fleece on both sides.
SynTherm® DMD is a Class F (155 °C) insulating material and has a high dielectric and high mechanical strength. It is tough and flexible.
This allows for easy insertion into the slot and the spreading effect ensures a sturdy grip. The smooth surface makes SynTherm® DMD ideal at automatic insulating and insertion machines. Additionally, it provides excellent adhesion in conjunction with impregnating materials.
The outer cured resin impregnation protects the polyester film against oxidation and hydrolysis.
Application
SynTherm® DMD is used as slot insulation and for pre-shaped wedges in electric motors. Due to its special surface qualities it is also used as phase insulation. SynTherm® DMD is commonly used as core, interlayer und final insulation for the production of transformers.
Standards
- Class F insulating material (155 °C)
- UL approved, e.g. E247773
- Test standard IEC 60626-2
- Sample conditioning acc. to standard atmosphere 23/50
Delivery forms
Total thickness in μm:
100,130, 150, 180, 200, 230, 280, 340, 450
SynTherm® DMD can be supplied:
- in slit rolls from widths of 6 mm (depending on thickness) and above
- in rolls approx. width 1260 mm
- in sheets approx. 630 mm x 800 mm or approx. 800 mm x 1260 mm
Overall diameter of the slit rolls/ rolls as required approx. 240, 330 or 450 mm.
Feathering:
- depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
- from widths of 10 to 240 mm and thickness of 0.23 mm
Base
PET-film + both sided impregnated non-woven layer
Punched parts, bent & formed parts
We offer a wide range of punched and formed parts: Rolls, individual parts unsorted, sorted or stacked, adhesive on one or both sides, non-adhesive, with or without a grip tab.
You have questions according to our electrical insulation materials or want to send an inquiry?
Our sales representative will be happy to help you.
Technical data
| Property | Unit of measure | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Total thickness | mm | 0.10 | 0.13 | 0.15 | 0.18 | 0.20 | 0.23 | 0.28 | 0.34 | 0.45 |
| Thickness tolerance | % | ± 15 | ± 15 | ± 15 | ± 15 | ± 15 | ± 15 | ± 15 | ± 10 | ± 10 |
| Specific weight | g/m² | 96 | 115 | 145 | 190 | 220 | 260 | 350 | 425 | 560 |
| Film thickness | µm | 36 | 23 | 50 | 75 | 100 | 125 | 190 | 250 | 350 |
| Tensile strength longitudinal | N/10 mm | 60 | 50 | 110 | 140 | 160 | 200 | 300 | 350 | 400 |
| Tensile strength transversal | N/10 mm | 50 | 40 | 90 | 105 | 120 | 150 | 200 | 300 | 350 |
| Elongation at break (unfold) longitudinal | % | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Elongation at break (unfold) transversal | % | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Property | Unit of measure | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Total thickness | mm | 0.10 | 0.13 | 0.15 | 0.18 | 0.20 | 0.23 | 0.28 | 0.34 | 0.45 |
| Dielectric strength (unfold) | kV | 4.5 | 4 | 6 | 7 | 9 | 10 | 15 | 18 | 22 |