Cross-linkable polyethylene insulating com pounds for wires and cables

Serial Number

Item

Unit

Specification

YJ-10KV

YJF-10KV

YJG-10KV

YJ-3KV

YJF-3KV

YJG-3KV

1

Tensile Strength

MPa

≥13.5

≥13.5

≥13.5

≥13.5

2

Elongation at Break

%

≥350

≥350

≥350

≥350

3

Thermal extension (200±3℃，0.2 MPa，15min）

负荷下伸长率

%

≤100

≤100

≤100

≤100

Deformation rate after cooling

%

≤15

≤15

≤15

≤15

*4

135±2℃×168h

Tensile Strength Variation After Aging

The rate of change in tensile strength

%

±20

±20

±20

±20

Elongation Variation After Aging

%

±20

±20

±20

±20

*5

Cold brittle point,degree,Max

-76℃

Pass

通过

Pass

通过

Pass

Pass

Pass

通过

*6

Gel fraction

%

≥80

≥60

≥80

≥60

*7

Volume Resistivity at 20℃

Ω.m

≥1×1014

≥1×1014

≥1×1014

≥1×1014

*8

Dielectric Constant at 20℃

HZ

≤2.35

≤2.35

_

_

*9

Dielectric strength

MV/m

≥25

≥25

≥25

≥25