Characteristic and Application: Temperature classification E. Excellent mechanical and
dielectric properties. Used as insulating structural parts for electric machine and apparatus
equipments as well as in the transformer oils.
Standard: JB/T2128-1977
Properties Requirements are shown in Table 1
NO. |
Item |
Unit |
Requirement |
3025 |
3027 |
323 |
PFCC3 |
1 |
Density |
g/cm3 |
1.30 to 1.42 |
1.30 to 1.42 |
1.30 to 1.50 |
-- |
2 |
Martin¡¯s temperature |

|
125
|
135
|
125
|
-- |
3 |
Tensile strength |
MPa |
65
|
60
|
98(Lengthwise)
|
-- |
4 |
Flexural strength |
MPa |
105
|
90
|
156.9(Lengthwise)
|
110
|
5 |
Bondig strength |
N |
5500
|
5500
|
-- |
-- |
6 |
Impact strength |
kg/m2 |
25
|
20
|
34(Lengthwise)
|
7.0
|
7 |
Compressive Strength |
Parallel to layer direction |
MPa |
-- |
-- |
245
|
-- |
Perpendicular to layer direction |
-- |
-- |
147
|
-- |
8 |
Breakdown strength perpendicular to layer direction, at 90   2  oil |
MV/m |
2-4 |
5-8 |
-- |
-- |
9 |
Breakdown voltage parallel to layer direction, at 90   2  |
kV |
-- |
10
|
-- |
-- |
10 |
Insulation Resistance |
At room Temperature
|

|
-- |
1.0x104
|
-- |
-- |
Parallel to layer direction |
After being humidified |
-- |
1.0x101 |
-- |
-- |
11 |
Water Absorption |
% |
-- |
-- |
1.0
|
186 to 540mg |
Properties Requirements are shown in Table2
Nominal Thickness mm |
Tolerance |
3025 |
3027 |
323 |
PEFCC3 |
0.4 |
-- |
-- |
-- |
0.12
|
0.5 |
0.15
|
0.15
|
0.10
|
0.13
|
0.6 |
-- |
-- |
0.10 |
0.14
|
0.8 |
0.15
|
0.15
|
0.10
|
0.15
|
1.0 |
0.15
|
0.15
|
0.10
|
0.16
|
1.2 |
0.18
|
0.18
|
0.15
|
0.17
|
1.5 |
0.18
|
0.18
|
0.15
|
-- |
1.6 |
-- |
-- |
-- |
0.19
|
1.8 |
0.23
|
0.23
|
0.20
|
-- |
2.0 |
0.23
|
0.23
|
0.20
|
0.21
|
2.5 |
0.33
|
0.30
|
0.30
|
0.24
|
3.0 |
0.33
|
0.30
|
0.30
|
0.26
|
3.5 |
0.33
|
0.30
|
0.30
|
-- |
4.0 |
0.38
|
0.35
|
0.40
|
0.32
|
4.5 |
0.38
|
0.35
|
-- |
-- |
5.0 |
0.48
|
0.40
|
0.50
|
0.36
|
5.5 |
0.48
|
0.40
|
-- |
-- |
6.0 |
0.58
|
0.50
|
0.60
|
0.80
|
6.5 |
0.58
|
0.50
|
-- |
-- |
7.0 |
0.68
|
0.55
|
0.60
|
-- |
8.0 |
0.68
|
0.55
|
0.60
|
0.98
|
9.0 |
0.80
|
0.65
|
0.60
|
-- |
10.0 |
0.80
|
0.65
|
0.70
|
1.12
|
12 |
1.00
|
0.80
|
0.70
|
1.28
|
14 |
1.00
|
0.80
|
0.80
|
1.40
|
16 |
1.30
|
1.10
|
0.80
|
1.52
|
20 |
1.30
|
1.10
|
1.00
|
1.74
|
25 |
1.50
|
1.20
|
1.50
|
2.04
|
30 |
1.50
|
1.20
|
1.50
|
2.24
|
35 |
2.00
|
1.50
|
2.00
|
2.48
|
40 |
2.00
|
1.50
|
2.00
|
2.70
|
45 |
2.80
|
2.00
|
2.50
|
2.90
|
50 |
2.80
|
2.00
|
2.50
|
3.10
|
60 |
-- |
2.50
|
3.00
|
3.50
|
70 |
-- |
2.80
|
3.00
|
3.80
|
80 |
-- |
2.80
|
-- |
4.20
|
90 |
-- |
-- |
-- |
4.50
|
100 |
-- |
-- |
-- |
4.80
|