| Table 1 :Performance index |
| |
|
|
Order |
Item name |
Unit |
Test method |
Index |
|
1 |
Density |
g/cm3 |
GB/T5130 section 8.1 |
(1.70-1.90) |
|
2 |
Water absorption |
mg |
GB/T5130 section 8.2 |
Refer to table 2 |
|
3 |
Vertical layer direction bending strength |
MPa |
GB/T5130 section 5.1 |
>= 340 |
|
4 |
Vertical layer direction compression strength |
MPa |
GB/T5130 section 5.3 |
>= (350) |
|
5 |
Tensile strength |
MPa |
GB/T5130 section 5.7 |
>= (300) |
|
6 |
Compact strength (Simply strut-beam method) |
KJ/m3 |
GB/T5130 section 5.5.1 |
>= 33 |
|
7 |
Insulation resistance after water dipping |
Ω |
GB/T5130 section 6.3 |
>= 5.0 × 108 |
|
8 |
Mediate loss factor, 1MHz hour |
____ |
GB/T5130 section 6.2 |
<= 0.04 |
|
9 |
Dielectric constant, 1MHz hour |
____ |
GB/T5130 section 6.2 |
<= 5.5 |
|
10 |
Vertical layer direction electric strength at （90±2）℃ transformer oil |
KV/mm |
GB/T5130 section 6.1 |
Refer to table 3 |
|
11 |
Parallel layer direction striking voltage |
kV |
GB/T5130 section 6.1 |
>= 35 | |
| |
| Table 2 ：Water absorption |
| |
|
|
Average hickness mm |
Water absorption mg |
Average thickness mm |
Water absorption mg |
Average thickness mm |
Water absorption mg |
|
0.4 |
<= 17 |
2.0 |
<= 20 |
10 |
<= 34 |
|
0.5 |
<= 17 |
2.5 |
<= 21 |
12 |
<= 38 |
|
0.6 |
<= 17 |
3 |
<= 22 |
14 |
<= 41 |
|
0.8 |
<= 18 |
4 |
<= 23 |
16 |
<= 46 |
|
1.0 |
<= 18 |
5 |
<= 25 |
20 |
<= 52 |
|
1.2 |
<= 18 |
6 |
<= 27 |
25 |
<= 61 |
|
1.6 |
<= 19 |
8 |
<= 31 |
Single side processing to 22.5 |
<= 73 | |
| |
| Table 3 ：Electric strength |
| |
|
|
Average thickness mm |
Average strength kV/mm |
Average thickness mm |
Electric strength kV/mm |
Average thickness mm |
Electric strength kV/mm |
|
0.4 |
>= 16.9 |
1.0 |
>= 14.2 |
2.2 |
>= 11.4 |
|
0.5 |
>= 16.1 |
1.2 |
>= 13.7 |
2.4 |
>= 11.1 |
|
0.6 |
>= 15.6 |
1.4 |
>= 13.2 |
2.5 |
>= 10.9 |
|
0.7 |
>= 15.2 |
1.6 |
>= 12.7 |
2.6 |
>= 10.8 |
|
0.8 |
>= 14.8 |
1.8 |
>= 12.2 |
2.8 |
>= 10.5 |
|
0.9 |
>= 14.5 |
2.0 |
>= 11.8 |
3.0 |
>= 10.2 | |
