Pre-Impregnated DMD Film for Casting Transformer (PRE-PREG DMD FILM) Pre-Preg DMD Insulation Film

• Application: Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Cast Transformer Winding
• Type: Insulation Film
• Chemistry: Organic Insulation
• Material: Pet Film Non Woven
• Thermal Rating: F 155
• Maximum Voltage: >100KV
• Model NO.: pre-dmd film
• Classification: Hybrid Insulation Materials
• Certification: UL, ISO9001
• Color: Red
• Brand: Xincheng
• Transport Package: Pallets
• Trademark: xincheng
• Origin: China
• Production Capacity: 1000ton/Year

Product Description

Pre-impregnated DMD FILM
Pre-impregnated DMD(Class F)formed in the process of precuring the modified F-class DMD with impregnation of Hi-temp resistant Epoxy resin into B-stage by baking
Characters
Pre-impregnated DMD FILM
 is Class F(155°C)insulating material
Pre-impregnated DMD FILM  has long shelf life at room temperature,low precuring temperature and time,showing excellent electrical insulation, bonding and heat-resistant properties.
Application
Pre-impregnated DMD FILM  is used for liner insulation of copper foil (aluminum foil) low voltage coils in dry-type transformer and slot insulation and interphase insulation in B ~ F class motors and electrical appliances.
Special specification can be supplied according to customer request.
 
 

Properties

Units

Values

Nominal thickness

mm

0.15

0.18

0.2

0.23

0.25

0.3

0.35

0.4

0.45

Tolerance

mm

±0.02

±0.025

±0.03

±0.03

±0.03

±0.03

±0.035

±0.040

±0.045

Thickness of film

mm

0.05

0.05

0.05

0.1

0.1

0.15

0.188

0.25

0.25

Tensile Strength(no bending)

mm

≥70

≥80

≥100

Resin content

%

35±5

30±5

25±5

20±5

Volatile content

%

≤1.5

Smeltable resin content

%

≥1.0

Dielectric strength

mV/m

≥40

Breakdown votage

kV

≥7

≥7

≥7

≥10

≥10

≥10

≥15

≥18

≥18

Tensile and shear strength

Mpa

≥3.0

Heat shrinkage rate

Crosswise

%

≤1.0

Lengthwise

≤2.0

Appearance

Soft,smooth free of any delamination impurity,damage,crack,blister.

Color

Red,Brown,White

Thermal rating class

ºC

≥155