XLPE Compound for MV power cable
No.
|
Experiment Item
|
Testing Method
|
Unit
|
Standard
|
Typical value
|
1
|
Density
|
ASTMD79200
|
g/cm3
|
0.921
|
0.921
|
2
|
Tensile strength
|
ISO1184:1983
|
MPa
|
≥ 13.5
|
23
|
3
|
Elongation at break
|
ISO1184:1983
|
%
|
≥ 350
|
530
|
4
|
Gel content
|
%
|
≥ 80
|
85
|
|
5
|
Brittle temperature -76ºC
|
ISO974:2000
|
Pieces
|
≤ 15
|
0
|
6
|
Resistance to environmental stress cracking
|
h
|
1200
|
1200
|
|
7
|
Dielectric constant 20℃、50HZ
|
IEC60250:1969
|
/
|
≤ 2.35
|
2.20
|
8
|
Dissipation factor 20℃、50HZ
|
IEC60250:1969
|
/
|
≤ 5×10-4
|
2×10-4
|
9
|
DC Volume resistivity 20℃
|
IEC60093:1980
|
Ω·m
|
≥1.0×1014
|
9×1014
|
10
|
Dielectric strength 20℃
|
IEC60243-1:1988
|
MV/m
|
≥25
|
39
|