|
Low resistance corona resistant tape
1. 2640
It is manufactured by non-alkli fiberglass fabric impregnated with low resistance varnish ,and cured at high temperature into B-stage material. |
Technical Requirement
|
No. |
Item |
Unit |
Value |
|
1 |
Appearance |
－ |
Uniform coating ,without outside impurity. |
|
2 |
Thickness |
mm |
0.12±0.01 |
|
3 |
Width |
mm |
25±1 |
|
4 |
Density |
g/㎡ |
200±20 |
|
5 |
Surface resistance |
Ωcm/cm |
1×103～1×105 |
|
6 |
Core ID |
mm |
40 |
|
7 |
Length |
m/Roll |
60 |
|
8 |
Storage life |
－ |
6 months under Temp.5℃, 2 months under Temp.20℃, 1 months under Temp.30℃ |
Suitable for Moulding. It is mainly used in the straight part of the stator winding for corona resistant structure in HV motor、hydraulic generator、steam generator as well as the straight part of the motor slot lining.
2. 2640-1
It is manufactured by non-alkali fiberglass fabric knitted with polyester then impregnated with low resistance varnish,and cured at high temperature.It is easily to handle and has the shrinkage properties as well as the uniform resistance on the winding surface after being cured.
Technical Requirement
| No. |
Item |
Unit |
Value |
|
1 |
Appearance |
- |
Uniform coating ,without any outside impurity. |
|
2 |
Thickness |
mm |
0.08±0.01 |
|
3 |
Width |
mm |
20~25±1 |
|
4 |
Density |
g/㎡ |
70±15 |
|
5 |
Surface resistance |
Ωcm/cm |
2×102～9×102 |
|
6 |
Core diametre |
mm |
40 |
|
7 |
Length |
m/Roll |
50 |
|
8 |
Shrinkage 160℃ 1.5h. |
% |
≤7 |
Suitable for moulding and VPI. It is mainly used for straight part of the stator winding for corona resistant structure in HV motor,hydraulic generator,steam generator.
3. 2640-2
It is manufactured by non-alkali fiberglass fabric impregnated with low resistance varnish ,and cured at high temperature.It is easily to handle with higher tensile strength as well as uniform resistance on the winding surface after being cured.
Technical Requirement
| No. |
Item |
Unit |
Value |
|
1 |
Appearance |
－ |
Uniform coating ,without any outside impurity. |
|
2 |
Thickness |
mm |
0.08±0.01, 0.12±0.01 |
|
3 |
Width |
mm |
25±1 |
|
4 |
Density |
g/㎡ |
80±20, 120±20 |
|
5 |
Surface resistance |
Ωcm/cm |
2×102～9×102 |
|
6 |
Core diametre |
mm |
40 |
|
7 |
Length |
m/Roll |
100， 60 |
Suitable for moulding, It is mainly used in the straight part of the stator winding for corona resistant structure in HV motor,hydraulic generator,steam generator.
4. 2640-2w
It is manufactured by reinforced polyester non-woven fabric impregnated with low resistance varnish ,and cured at high temperature.It is easily to handle and reasonable shrinkage as well as the uniform resistance on the winding surface after being cured.
Technical Requirement
| No. |
Item |
Unit |
Value |
|
1 |
Appearance |
- |
Uniform coating ,without any outside impurity. |
|
2 |
Thickness |
mm |
0.08±0.01, 0.10±0.01 |
|
3 |
Width |
mm |
25±1 |
|
4 |
Density |
g/㎡ |
65±15, 70±15 |
|
5 |
Surface resistance |
Ωcm/cm |
2×102～9×102 |
|
6 |
Core diametre |
mm |
40 |
|
7 |
Length |
m/Roll |
100 |
|
8 |
Shrinkage 160℃ 1.5h. |
% |
≤7 |
Suitable for VPI and Moulding. It is mainly used in the straight part of the stator winding for corona resistant structure in HV motor,hydraulic generator,steam generator as well as the straight part of the slot lining(can be used with vulcanized semiconductive silicone rubber at room Temp..) ,winding shield for HV nutual inductance and the epoxy fiberglass wrapping high voltage capacitor’s sleeve electrode。
