XLPE Insulation Material

XLPE Technical Data

Grade

XLPE    NATURAL-TREE    WIRE

Description

Silane crosslinkable polyethylene insulation compound curable by exposure to hot water or steam /moisture

Application

For 35KV& below power cable insulation

Characteristics

Excellent extrusion properties,less sensitive to precrosslinking or scorching less die drool built up,low shrinkage

Material Designation

IEC 60502

Material Classification

XLPE

Properties

Test Method

Unit

Specification

Typical Value

Melt Index

ASTM   D1238

g/10 min

2.16

Density

ASTM   D792

g/cm3

0.93

Tensile Strength

IEC 60811-1-1

Mpa

≥12.5

15

Elongation at Break

IEC 60811-1-1

%

>200

400

Brittleness Temperature (-76℃)

ASTM   D746

Failure pieces

<15/30

25

Maximum variation of tensile

strength after ageing (7days at 135℃)

IEC 60811-1-2

%

±25

20

Maximum variation of elongation after ageing (7days at 135°℃)

IEC 60811-1-2

%

±25

20

Hot set test (20N/cm2 at 200℃ Elongation under load Permanent Elongation  （20N/cm2 at 200°C

IEC 60811-2-1

%

≤175

165

Shrinkage

IEC 6C311-1-3

%

≤4

2.5

Dielectric constant @20°℃,50Hz

ASTM  D150

2.35

Volume Resistivity @20℃

ASTM  D257

ohm.cm

1×10^14

Dielectric Strength

ASTM   D149

MV/m

25

Contaminants

100-200μm

201-500μm

>500μm

Internal Method

Num./kg

0.93~0.18

0.18~0.465

>0.465