ISO 9001
SPACER CABLE TECHNICAL DATA FOR 3 LAYER COMPOUNDS
The first layer data (inner layer) 35kV semi-conducting shield compound
|
|
DESCRIPTION |
UNIT |
REQUIRED VALUE |
|
1 |
Color |
|
Black |
|
2 |
Density (23℃) |
g/cm3 |
1.11 |
|
3 |
Tensile strength before aging |
Mpa |
min 14 |
|
Elongation at break before aging |
% |
min 200 |
|
|
4 |
Performance after air oven aging |
||
|
Testing temperature |
℃ |
135±2 |
|
|
Testing time |
hours |
168 |
|
|
Tensile strength variation before & after aging |
% |
15 |
|
|
At-break-elongation variation before & after aging |
% |
-7.5 |
|
|
5 |
Hot set test(0.2MPa,200℃, 15min) |
||
|
Elongation under load |
% |
43 |
|
|
Variation after cool |
% |
0 |
|
|
6 |
Volume resistivity at 20℃ |
Ω.cm |
33 |
|
7 |
Volume resistivity at 90℃ |
Ω.cm |
181 |
|
8 |
Volume resistivity at 90℃(volume resistivity at 90℃, after air oven aging (100℃*168hours)) |
Ω.cm |
124 |
The second layer data (middle layer) 35kV XLPE, color natural (clear)
|
|
DESCRIPTION |
UNIT |
REQUIRED VALUE |
|
1 |
Color |
|
Clear, natural |
|
2 |
Density (23℃) |
g/cm3 |
0.926 |
|
3 |
Tensile strength before aging |
Mpa |
min 23 |
|
Elongation at break before aging |
% |
min 500 |
|
|
4 |
Performance after air oven aging |
||
|
Testing temperature |
℃ |
135±2 |
|
|
Testing time |
hours |
168 |
|
|
Tensile strength variation before & after aging |
% |
-9.3 |
|
|
At-break-elongation variation before & after aging |
% |
-17 |
|
|
5 |
Hot set test(0.2MPa,200℃, 15min) |
||
|
Elongation under load |
% |
35 |
|
|
Variation after cool |
% |
0 |
|
|
6 |
Dielectric loss factor, 20℃, 50Hz |
|
0.0004 |
|
7 |
Dielectric coefficient, 20℃, 50Hz |
|
2.1 |
|
8 |
Volume resistivity at 20℃ |
Ω.m |
1.5 x 1013 |
|
9 |
Dielectric strength |
MV/m |
35 |
The third layer data (outer layer) 35kV XLPE, Gray, UV resistant, weather resistant
|
|
DESCRIPTION |
UNIT |
REQUIRED VALUE |
|
1 |
Color |
|
Gray |
|
2 |
Density (23℃) |
g/cm3 |
0.926 |
|
3 |
Tensile strength before aging |
Mpa |
min 24.7 |
|
Elongation at break before aging |
% |
min 521 |
|
|
4 |
Performance after air oven aging |
||
|
Testing temperature |
℃ |
135±2 |
|
|
Testing time |
hours |
168 |
|
|
Tensile strength variation before & after aging |
% |
-7 |
|
|
At-break-elongation variation before & after aging |
% |
-5 |
|
|
5 |
Hot set test(0.2MPa,200℃, 15min) |
||
|
Elongation under load |
% |
33 |
|
|
Variation after cool |
% |
0 |
|
|
6 |
Dielectric loss factor, 20℃, 50Hz |
|
0.00005 |
|
7 |
Dielectric coefficient, 20℃, 50Hz |
|
2.0 |
|
8 |
Volume resistivity at 20℃ |
Ω.m |
1.4 x 1015 |
|
9 |
Dielectric strength |
MV/m |
35 |
