Used in motor winding.DMD Paper length is 1x1mtr.
DMD paper thickness sizes available are :
0.20mm, 0.25mm, 0.30mm
Used for electrical insulation, DMD Composite Paper is economical and versatile. This material is made from a single layer of polyester film that is coated on both sides with polyester felt. This three-layer constructions ensures the material offers good mechanical and dielectric strength while still being able to be impregnated by insulating varnishes.
DMD Electrical Insulation Paper is available in a selection of thicknesses. More information on these as well as it’s performance traits and benefits, is provided below:
DMD’s construction ensures it provides good electrical strength. Specific breakdown voltage ratings vary depending on overall thickness and are summarised in the table below:
In addition to its solid electrical properties, DMD is a strong yet flexible insulation paper material. It will withstand temperatures up to 155°C (Class F) and exhibits no delamination of the layers when tested at this temperature for 10 minutes. Strength ratings for various thicknesses are included below:
Length, Before Bending
Length, After Bending
Cross, After Bending
|0.15mm||2-2-2||?80 N/10mm||?80 N/10mm||?80 N/10mm||?70 N/10mm|
|0.23mm||3-3-3||?180 N/10mm||?150 N/10mm||?150 N/10mm||?120 N/10mm|
|0.3mm||3-5-3||?240 N/10mm||?180 N/10mm||?170 N/10mm||?130 N/10mm|
|0.38mm||5-5-5||?290 N/10mm||?270 N/10mm||?270 N/10mm||?180 N/10mm|
In addition to its excellent strength, DMD is also very easy to work with. The fleece layers on either side of the poly film are sealed with a light coating of varnish. This ensures that the material has a smooth surface finish and won’t catch if applied with machine taping systems.
DMD is typically used on low and medium voltage electric machines. Specific applications include: