Insulation materials for transformer/dmd

Technical Specification

Unite

Values

Thickness

mm

0.15

0.18

0.20 

0.23

0.25

0.30 

0.35

0.40 

0.45

Thickness Tolerance

mm

±0.02

±0.025

±0.03

±0.03

±0.03

±0.03

±0.035

±0.040

±0.045

Nominal Grammage and tolerance 

g/

140±20

190±28

220±33

260±39

300±45

350±52

425±63

500±75

560±84

Thickness of polyester film

mm

0.05

0.075

0.10 

0.125

0.15

0.19

0.25

0.3

0.35

Tensile Strength

MD

No Bending

N/10

mm Width

≥80

≥120

≥140

≥180

≥190

≥270

≥320

≥340

≥370

After Bending

≥80

≥105

≥120

≥150

≥170

≥200

≥300

≥320

≥350

TD

No Bending

≥80

≥105

≥120

≥150

≥170

≥200

≥300

≥320

≥350

After Bending

≥70

≥90

≥100

≥120

≥130

≥150

≥200

≥220

≥250

Elongation

MD

No Bending

≥15

After Bending

≥10

≥5

≥3

TD

No Bending

≥20

After Bending

≥10

≥5

≥2

Breakdown Voltage

KV

≥6

≥7

≥9

≥10

≥12

≥15

≥18

≥20

≥22

Bond strength at 25 degree C

No delamination

Bond strength at 180 degree C

No delamination,no blister,no adhesive flow

Temperature

155